pax_global_header00006660000000000000000000000064130536772060014523gustar00rootroot0000000000000052 comment=c9b0ee7f54bba34aae3589e31f969e928da5c268 parmap-1.0-rc8/000077500000000000000000000000001305367720600133355ustar00rootroot00000000000000parmap-1.0-rc8/.depend000066400000000000000000000002371305367720600145770ustar00rootroot00000000000000bytearray.cmo: bytearray.cmi bytearray.cmx: bytearray.cmi parmap.cmo: bytearray.cmi parmap.cmi parmap.cmx: bytearray.cmx parmap.cmi bytearray.cmi: parmap.cmi: parmap-1.0-rc8/.gitignore000066400000000000000000000000721305367720600153240ustar00rootroot00000000000000log* *~ _build Makefile config.h config.log config.status parmap-1.0-rc8/AUTHORS000066400000000000000000000013141305367720600144040ustar00rootroot00000000000000This code started as a two day exercise done at Irill in July 2011, by Marco Danelutto and Roberto Di Cosmo , that produced the architecture now contained in simplemapper. It has evolved significantly after, and it now contains a particularly efficient version of the map code on float arrays, incorporating ideas from Paul Vernaza , and that works thanks to smart code and significant insight from Jerome Vouillon . Pietro Abate provided autoconf and ocamlbuild support. Detailed contributor history is contained in the git repository available at https://gitorious.org/parmap parmap-1.0-rc8/Changelog000066400000000000000000000017231305367720600151520ustar00rootroot000000000000002011/11/30 (RDC) Version 0.9.8 contains the following major new features w.r.t. 0.9.4 - a chunksize parameter can be used to control the granularity of the parallelism: each worker will handle a series of chunks of this size and ask for them when ready, thus allowing the system to achieve automatic load balancing - very specialised versions of the map function are now available for arrays and float arrays, allowing to obtain significant speed-up even on relatively light computations - autoconf and ocamlbuild harness should simplify compilation and installation. 2011/08/30 (RDC) internally convert lists to array to avoid quadratic penalty in execution time on long lists, thanks to Paul Vernaza for pointing out this issue; added 'a sequence type to allow using efficiently the library both with lists and arrays. parmap-1.0-rc8/INSTALL000066400000000000000000000003021305367720600143610ustar00rootroot00000000000000To install this program, just type ./configure; make; make install To uninstall, type make uninstall To compile from git, do this first : aclocal -I m4 autoconf autoheader ./configure make parmap-1.0-rc8/LICENSE000066400000000000000000000635311305367720600143520ustar00rootroot00000000000000The Library is distributed under the terms of the GNU Library General Public License version 2 (included below), with a special exception to section 6, as detailed below. 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Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker. , 1 April 1990 Ty Coon, President of Vice That's all there is to it! parmap-1.0-rc8/META000066400000000000000000000003331305367720600140050ustar00rootroot00000000000000name = "parmap" version = "1.0-rc1" description = "Parallel map primitive for multicores" requires = "bigarray unix" archive(byte) = "parmap.cma" archive(native) = "parmap.cmxa" linkopts(byte) = "-cclib -lparmap_stubs" parmap-1.0-rc8/Makefile.in000066400000000000000000000057001305367720600154040ustar00rootroot00000000000000VERSION=@PACKAGE_VERSION@ NAME=@PACKAGE_NAME@ CFLAGS=@CFLAGS@ -fPIC -Wall -pedantic -Werror -Wno-long-long CPPFLAGS=@CPPFLAGS@ LDFLAGS=@LDFLAGS@ OCAMLFIND=@OCAMLFIND@ OCAMLBUILD=@OCAMLBUILD@ datarootdir = @datarootdir@ prefix = @prefix@ exec_prefix = @exec_prefix@ ifeq ($(DESTDIR),) LIBDIR=$(shell ocamlfind printconf destdir) BINDIR=@bindir@ MANDIR=@mandir@/man3 INSTALL = $(OCAMLFIND) install UNINSTALL = $(OCAMLFIND) remove else export OCAMLLIBDIR := lib/ocaml LIBDIR=$(DESTDIR)/$(OCAMLLIBDIR) BINDIR=$(DESTDIR)/bin MANDIR=$(DESTDIR)/man/man3 INSTALL = $(OCAMLFIND) install -destdir $(LIBDIR) UNINSTALL = $(OCAMLFIND) remove -destdir $(LIBDIR) endif ifeq ("@OCAMLBEST@","opt") OCAMLBEST=native else OCAMLBEST=byte endif DIST_DIR = $(NAME)-$(VERSION) DIST_TARBALL = $(DIST_DIR).tar.gz OBFLAGS = -j 10 -use-ocamlfind #-classic-display #OBFLAGS += $(OBFLAGS) -tag debug -tag profile BYTELIBS = parmap.cma OPTLIBS= CMXSLIBS= ALIBS= ifeq ("@OCAMLBEST@","opt") ALIBS = $(BYTELIBS:%.cma=%.a) OPTLIBS += $(BYTELIBS:%.cma=%.cmxa) endif ifeq ("@OCAMLNATDYNLINK@", "yes") CMXSLIBS += $(BYTELIBS:%.cma=%.cmxs) endif all: $(OCAMLBUILD) $(OBFLAGS) $(BYTELIBS) $(OPTLIBS) $(CMXSLIBS) $(ALIBS) fast: $(OCAMLBUILD) $(OBFLAGS) $(OPTLIBS) TESTS = \ tests/simplescale.$(OCAMLBEST) \ tests/floatscale.$(OCAMLBEST) \ tests/simplescale_array.$(OCAMLBEST) \ tests/simplescalefold.$(OCAMLBEST) \ tests/simplescalemapfold.$(OCAMLBEST) tests: $(OCAMLBUILD) $(OBFLAGS) $(TESTS) EXAMPLES = \ example/mandels.$(OCAMLBEST) examples: $(OCAMLBUILD) $(OBFLAGS) $(EXAMPLES) INSTALL_STUFF = META INSTALL_STUFF += $(wildcard _build/*.cma _build/*.cmx _build/*.cmxa _build/*.cmxs) INSTALL_STUFF += $(filter-out $(wildcard _build/myocamlbuild.*),$(wildcard _build/*.mli _build/*.cmi)) INSTALL_STUFF += $(wildcard _build/*.so _build/*.a) install: $(LIBS) META test -d $(LIBDIR) || mkdir -p $(LIBDIR) test -d $(LIBDIR)/stublibs || mkdir -p $(LIBDIR)/stublibs $(INSTALL) -patch-version $(VERSION) $(NAME) $(INSTALL_STUFF) (cd _build; ocamldoc -man -man-mini parmap.ml parmap.mli) test -d $(MANDIR) || mkdir -p $(MANDIR) cp -p _build/Parmap.3o $(MANDIR) uninstall: $(UNINSTALL) $(NAME) rm -f $(MANDIR)/Parmap.3o doc: $(OCAMLBUILD) $(OBFLAGS) $(NAME).docdir/index.html $(NAME).docdir/index.dot dot -Grotate=0 -Tsvg -o $(NAME).docdir/index.svg $(NAME).docdir/index.dot clean: $(OCAMLBUILD) -clean dist: ./$(DIST_TARBALL) ./$(DIST_TARBALL): if [ -d ./$(DIST_DIR)/ ] ; then rm -rf ./$(DIST_DIR)/ ; fi if [ -d ./$(DIST_TARBALL) ] ; then rm -f ./$(DIST_TARBALL) ; fi if [ -d .svn ]; then \ svn export . ./$(DIST_DIR) ; \ else \ mkdir ./$(DIST_DIR)/ ;\ git archive --format=tar HEAD | \ tar -x -C ./$(DIST_DIR)/ ; \ fi for f in $(DIST_EXCLUDE) ; do rm -rf ./$(DIST_DIR)/$$f; done tar cvzf ./$(DIST_TARBALL) ./$(DIST_DIR) rm -rf ./$(DIST_DIR) @echo "Distribution tarball: ./$(DIST_TARBALL)" .PHONY: all fast install clean dist examples tests parmap-1.0-rc8/Makefile_3.11.in000066400000000000000000000044221305367720600160460ustar00rootroot00000000000000VERSION=@PACKAGE_VERSION@ NAME=@PACKAGE_NAME@ CFLAGS=@CFLAGS@ -fPIC -Wall -pedantic -Werror -Wno-long-long CPPFLAGS=@CPPFLAGS@ LDFLAGS=@LDFLAGS@ OBJS = bytearray parmap_utils $(NAME) INTF = $(foreach obj, $(OBJS),$(obj).cmi) setcore.cmi C_OBJS = bytearray_stubs.o setcore_stubs.o OBJECTS = $(foreach obj, $(OBJS),$(obj).cmo) XOBJECTS = $(foreach obj, $(OBJS),$(obj).cmx) LIBS = $(NAME).cma $(NAME).cmxa $(NAME).cmxs OCAMLC = ocamlfind ocamlc OCAMLOPT = ocamlfind ocamlopt OCAMLMKLIB = ocamlmklib OCAMLDEP = ocamldep COMPOPTS = -linkpkg -package bigarray -package parmap -package unix ARCHIVE = $(NAME).cma XARCHIVE = $(NAME).cmxa SARCHIVE = $(NAME).cmxs REQUIRES = unix bigarray all: $(ARCHIVE) $(XARCHIVE) .PHONY: reinstall reinstall: uninstall install .PHONY: install install: $(LIBS) META ocamlfind remove $(NAME) ocamlfind install $(NAME) META $(INTF) $(LIBS) *.a *.mli $(C_OBJS) *.so .PHONY: uninstall uninstall: ocamlfind remove $(NAME) $(ARCHIVE): $(INTF) $(OBJECTS) $(C_OBJS) $(OCAMLMKLIB) -o $(NAME) $(OBJECTS) $(C_OBJS) $(XARCHIVE): $(INTF) $(XOBJECTS) $(C_OBJS) $(OCAMLMKLIB) -o $(NAME) $(XOBJECTS) $(C_OBJS) $(SARCHIVE): $(INTF) $(XOBJECTS) $(C_OBJS) $(OCAMLOPT) -shared -o $(SARCHIVE) $(C_OBJS) $(XOBJECTS) bytearray_stubs.o: bytearray_stubs.c ocamlc -c bytearray_stubs.c setcore_stubs.o: setcore_stubs.c ocamlc -c -cc "gcc -D_GNU_SOURCE -o setcore_stubs.o -fPIC" setcore_stubs.c tests: cd tests; $(OCAMLOPT) $(COMPOPTS) utils.ml simplescale.ml -o simplescale.native cd tests; $(OCAMLOPT) $(COMPOPTS) utils.ml floatscale.ml -o floatscale.native cd tests; $(OCAMLOPT) $(COMPOPTS) utils.ml simplescalefold.ml -o simplescalefold.native cd tests; $(OCAMLOPT) $(COMPOPTS) utils.ml simplescalemapfold.ml -o simplescalemapfold.native cd tests; $(OCAMLOPT) $(COMPOPTS) utils.ml simplescale_array.ml -o simplescale_array.native examples: $(OCAMLOPT) $(COMPOPTS) graphics.cmxa example/mandels.ml -o example/mandels.native .SUFFIXES: .cmo .cmi .cmx .ml .mli .ml.cmo: $(OCAMLC) -package "$(REQUIRES)" -c $< .mli.cmi: $(OCAMLC) -package "$(REQUIRES)" -c $< .ml.cmx: $(OCAMLOPT) -package "$(REQUIRES)" -c $< depend: *.ml *.mli $(OCAMLDEP) *.ml *.mli >.depend include .depend .PHONY: clean examples tests clean: rm -f *.cmi *.cmo *.cmx *.cma *.cmxa *.cmxs *.a *.o *.so *.annot parmap-1.0-rc8/README000066400000000000000000000144121305367720600142170ustar00rootroot00000000000000Parmap in a nutshell -------------------- Parmap is a minimalistic library allowing to exploit multicore architecture for OCaml programs with minimal modifications: if you want to use your many cores to accelerate an operation which happens to be a map, fold or map/fold (map-reduce), just use Parmap's parmap, parfold and parmapfold primitives in place of the standard List.map and friends, and specify the number of subprocesses to use by the optional parameter ~ncores. See the example directory for a couple of running programs. DO'S and DONT'S --------------- Parmap is *not* meant to be a replacement for a full fledged implementation of parallelism skeletons (map, reduce, pipe, and the many others described in the scientific literature since the end of the 1980's, much earlier than the specific implementation by Google engineers that popularised them). It is meant, instead, to allow you to quickly leverage the idle processing power of your extra cores, when handling some heavy computational load. The principle of parmap is very simple: when you call one of the three available primitives, map, fold, and mapfold , your OCaml sequential program forks in n subprocesses (you choose the n), and each subprocess performs the computation on the 1/n of the data, in chunks of a size you can choose, returning the results through a shared memory area to the parent process, that resumes execution once all the children have terminated, and the data has been recollected. You need to run your program on a single multicore machine; repeat after me: Parmap is not meant to run on a cluster, see one of the many available (re)implementations of the map-reduce schema for that. By forking the parent process on a sigle machine, the children get access, for free, to all the data structures already built, even the imperative ones, and as far as your computation inside the map/fold does not produce side effects that need to be preserved, the final result will be the same as performing the sequential operation, the only difference is that you might get it faster. The OCaml code is reasonably simple and only marginally relies on external C libraries: most of the magic is done by your operating system's fork and memory mapping mechanisms. One could gain some speed by implementing a marshal/unmarshal operation directly on bigarrays, but we did not do this yet. Of course, if you happen to have open channels, or files, or other connections that should only be used by the parent process, your program may behave in a very wierd way: as an example, *do not* open a graphic window before calling a Parmap primitive, and *do not* use this library if your program is multi-threaded! Pinning processes to physical CPUs ---------------------------------- To obtain maximum speed, Parmap tries to pin the worker processes to a CPU, using the scheduler affinity interface that is available in recent Linux kernels. Similar functionality may be obtained on different platforms using slightly different API. Contributions are welcome to support those other APIs, just make sure that you use autoconf properly. Using Parmap with Ocamlnat -------------------------- You can use Parmap in a native toplevel (it may be quite useful if you use the native toplevel to perform fast interactive computations), but remember that you need to load the .cmxs modules in it; an example is given in example/topnat.ml Preservation of output order in Parmap -------------------------------------- If the number of chunks is equal to the number of cores, it is easy to preserve the order of the elements of the sequence passed to the map/fold operations, so the result will be a list with the same order as if the sequential function would be applied to the input. This is what the parmap, parmafold and parfold functions do when the chunksize argument is not used. If the user specifies a chunksize that is different from the number of cores, there is no general way to preserve the ordering, so the result of calling Parmap.parmap f l are not necessarily in the same order as List.map f l. In general, using little chunksize helps in balancing the load among the workers, and provides better speed, at the price of losing the ordering: there is a tradeoff, and it is up to the user to choose the solution that better suits him/her. Fast map on arrays and on float arrays -------------------------------------- Visiting an array is much faster than visiting a list, and conversion of an array to and from a list is expensive, on large data structures, so we provide a specialised version of map on arrays, that beaves exactly like parmap. We also provide a highly optimised specialised parmap version that is targeted to float arrays, array_float_parmap, that allows you to perform parallel computation on very large float arrays efficiently, without the boxing/unboxing overhead introduced by the other primitives, including array_parmap. To understand the efficiency issues involved in the case of large arrays of float, here is a short summary of the steps that any implementation of a parallel map function must perform. 1) create a float array to hold the result of the computation. This operation is expensive: on an Intel i7, creating a 10M float array takes 50 milliseconds ocamlnat Objective Caml version 3.12.0 - native toplevel # #load "unix.cmxs";; # let d = Unix.gettimeofday() in ignore(Array.create 10000000 0.); Unix.gettimeofday() -. d;; - : float = 0.0501301288604736328 2) create a shared memory area 3) possibly copy the result array to the shared memory area 4) perform the computation in the children writing the result in the shared memory area 5) possibly copy the result back to the OCaml array All implementations need to do 1, 2 and 4; steps 3 and/or 5 may be omitted depending on what the user wants to do with the result. The array_float_parmap performs steps 1,2,4 and 5. It is possible to share steps 1 and 2 among subsequent calls to the parallel function by preallocating the result array and the shared memory buffer, and passing them as optional parameters to the array_float_parmap function: this may save a significant amount of time if the array is very large.parmap-1.0-rc8/README.maintainer000066400000000000000000000005741305367720600163510ustar00rootroot00000000000000Notice to maintainers and contributors. Dependencies ------------ The list of modules that are packed into parmap.cm{,x}a is declared in parmap.mllib The list of modules that are packed into parmap.cmxs is stated in parmap.mldylib These informations are used by ocamlbuild to create the libraries, please keep them up to date even in case an alternative build system is used. parmap-1.0-rc8/README.md000066400000000000000000000142611305367720600146200ustar00rootroot00000000000000# Parmap in a nutshell Parmap is a minimalistic library allowing to exploit multicore architecture for OCaml programs with minimal modifications: if you want to use your many cores to accelerate an operation which happens to be a map, fold or map/fold (map-reduce), just use Parmap's `parmap`, `parfold` and `parmapfold` primitives in place of the standard `List.map` and friends, and specify the number of subprocesses to use by the optional parameter `~ncores`. See the `example` directory for a couple of running programs. ## DO'S and DONT'S Parmap is *not* meant to be a replacement for a full fledged implementation of parallelism skeletons (map, reduce, pipe, and the many others described in the scientific literature since the end of the 1980's, much earlier than the specific implementation by Google engineers that popularised them). It is meant, instead, to allow you to quickly leverage the idle processing power of your extra cores, when handling some heavy computational load. The principle of parmap is very simple: when you call one of the three available primitives, map, fold, and mapfold , your OCaml sequential program forks in n subprocesses (you choose the n), and each subprocess performs the computation on the 1/n of the data, in chunks of a size you can choose, returning the results through a shared memory area to the parent process, that resumes execution once all the children have terminated, and the data has been recollected. You *need* to run your program *on a single multicore machine*; repeat after me: `Parmap` _is not meant_ to run on a cluster, see one of the many available (re)implementations of the map-reduce schema for that. By forking the parent process on a sigle machine, the children get access, for free, to all the data structures already built, even the imperative ones, and as far as your computation inside the map/fold does not produce side effects that need to be preserved, the final result will be the same as performing the sequential operation, the only difference is that you might get it faster. The OCaml code is reasonably simple and only marginally relies on external C libraries: most of the magic is done by your operating system's fork and memory mapping mechanisms. One could gain some speed by implementing a marshal/unmarshal operation directly on bigarrays, but we did not do this yet. Of course, if you happen to have open channels, or files, or other connections that should only be used by the parent process, your program may behave in a very wierd way: as an example, *do not* open a graphic window before calling a Parmap primitive, and *do not* use this library if your program is multi-threaded! ## Pinning processes to physical CPUs To obtain maximum speed, Parmap tries to pin the worker processes to a CPU, using the scheduler affinity interface that is available in recent Linux kernels. Similar functionality may be obtained on different platforms using slightly different API. Contributions are welcome to support those other APIs, just make sure that you use autoconf properly. ## Using Parmap with Ocamlnat You can use Parmap in a native toplevel (it may be quite useful if you use the native toplevel to perform fast interactive computations), but remember that you need to load the `.cmxs` modules in it; an example is given in `example/topnat.ml` ## Preservation of output order in Parmap If the number of chunks is equal to the number of cores, it is easy to preserve the order of the elements of the sequence passed to the map/fold operations, so the result will be a list with the same order as if the sequential function would be applied to the input. This is what the `parmap`, `parmafold` and `parfold` functions do when the chunksize argument is not used. If the user specifies a chunksize that is different from the number of cores, there is no general way to preserve the ordering, so the result of calling `Parmap.parmap f l` are not necessarily in the same order as `List.map f l`. In general, using little chunksize helps in balancing the load among the workers, and provides better speed, at the price of losing the ordering: there is a tradeoff, and it is up to the user to choose the solution that better suits him/her. ## Fast map on arrays and on float arrays Visiting an array is much faster than visiting a list, and conversion of an array to and from a list is expensive, on large data structures, so we provide a specialised version of map on arrays, that beaves exactly like parmap. We also provide a highly optimised specialised parmap version that is targeted to float arrays, `array_float_parmap`, that allows you to perform parallel computation on very large float arrays efficiently, without the boxing/unboxing overhead introduced by the other primitives, including `array_parmap`. To understand the efficiency issues involved in the case of large arrays of float, here is a short summary of the steps that any implementation of a parallel map function must perform. 1. create a float array to hold the result of the computation. This operation is expensive: on an Intel i7, creating a 10M float array takes 50 milliseconds ```ocaml ocamlnat Objective Caml version 3.12.0 - native toplevel # #load "unix.cmxs";; # let d = Unix.gettimeofday() in ignore(Array.create 10000000 0.); Unix.gettimeofday() -. d;; - : float = 0.0501301288604736328 ``` 2. create a shared memory area 3. possibly copy the result array to the shared memory area 4. perform the computation in the children writing the result in the shared memory area 5. possibly copy the result back to the OCaml array All implementations need to do 1, 2 and 4; steps 3 and/or 5 may be omitted depending on what the user wants to do with the result. The `array_float_parmap` performs steps 1, 2, 4 and 5. It is possible to share steps 1 and 2 among subsequent calls to the parallel function by preallocating the result array and the shared memory buffer, and passing them as optional parameters to the `array_float_parmap` function: this may save a significant amount of time if the array is very large.parmap-1.0-rc8/_oasis000066400000000000000000000010671305367720600145410ustar00rootroot00000000000000OASISFormat: 0.2 Name: parmap Version: 0.9.4 Authors: Marco Danelutto and Roberto Di Cosmo Homepage: http://gitorious.org/parmap License: LGPL-2 LicenseFile: LICENSE ConfType: custom (0.3) BuildType: custom (0.3) InstallType: custom (0.3) BuildDepends: bigarray, unix BuildTools: make, ocamlbuild Synopsis: library to exploit multicore architectures (parallel programming) XCustomConf: ./configure XCustomBuild: make XCustomInstall: make install XCustomUninstall: make uninstall Library parmap Path: _build parmap-1.0-rc8/_tags000066400000000000000000000003301305367720600143510ustar00rootroot00000000000000<*>: annot #"libparmap.a": use_parmap : use_libparmap : link_libparmap <*.{ml,mli}>: package(unix), package(bigarray) <*sdl.*>: package(bigarray), package(sdl) <*.{ml,mli}>: warn(Ae) parmap-1.0-rc8/bytearray.ml000066400000000000000000000074761305367720600157070ustar00rootroot00000000000000(***************************************************************************) (* bytearray.ml : functions for efficient marshaling to and from bigarrays *) (* *) (* Copyright 1999-2011, Jérôme Vouillon *) (* *) (* This library is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU Lesser General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. A special linking *) (* exception to the GNU Lesser General Public License applies to this *) (* library, see the LICENSE file for more information. *) (***************************************************************************) open Bigarray type t = (char, int8_unsigned_elt, c_layout) Array1.t type tf = (float, float64_elt, c_layout) Array1.t let length = Bigarray.Array1.dim let create l = Bigarray.Array1.create Bigarray.char Bigarray.c_layout l let createf l = Bigarray.Array1.create Bigarray.float64 Bigarray.c_layout l (* let unsafe_blit_from_string s i a j l = for k = 0 to l - 1 do a.{j + k} <- s.[i + k] done let unsafe_blit_to_string a i s j l = for k = 0 to l - 1 do s.[j + k] <- a.{i + k} done *) external unsafe_blit_from_string : string -> int -> t -> int -> int -> unit = "ml_blit_string_to_bigarray" "noalloc" external unsafe_blit_to_string : t -> int -> string -> int -> int -> unit = "ml_blit_bigarray_to_string" "noalloc" let to_string a = let l = length a in if l > Sys.max_string_length then invalid_arg "Bytearray.to_string" else let s = String.create l in unsafe_blit_to_string a 0 s 0 l; s let of_string s = let l = String.length s in let a = create l in unsafe_blit_from_string s 0 a 0 l; a let mmap_of_string fd s = let l = String.length s in let ba = Bigarray.Array1.map_file fd Bigarray.char Bigarray.c_layout true l in unsafe_blit_from_string s 0 ba 0 l; ba let sub a ofs len = if ofs < 0 || len < 0 || ofs > length a - len || len > Sys.max_string_length then invalid_arg "Bytearray.sub" else begin let s = String.create len in unsafe_blit_to_string a ofs s 0 len; s end let rec prefix_rec a i a' i' l = l = 0 || (a.{i} = a'.{i'} && prefix_rec a (i + 1) a' (i' + 1) (l - 1)) let prefix a a' i = let l = length a in let l' = length a' in i <= l' - l && prefix_rec a 0 a' i l let blit_from_string s i a j l = if l < 0 || i < 0 || i > String.length s - l || j < 0 || j > length a - l then invalid_arg "Bytearray.blit_from_string" else unsafe_blit_from_string s i a j l let blit_to_string a i s j l = if l < 0 || i < 0 || i > length a - l || j < 0 || j > String.length s - l then invalid_arg "Bytearray.blit_to_string" else unsafe_blit_to_string a i s j l external marshal : 'a -> Marshal.extern_flags list -> t = "ml_marshal_to_bigarray" external marshal_to_buffer : t -> int -> 'a -> Marshal.extern_flags list -> int = "ml_marshal_to_bigarray_buffer" external unmarshal : t -> int -> 'a = "ml_unmarshal_from_bigarray" external unsafe_blit_from_floatarray : float array -> int -> tf -> int -> int -> unit = "ml_blit_floatarray_to_bigarray" "noalloc" external unsafe_blit_to_floatarray : tf -> int -> float array -> int -> int -> unit = "ml_blit_bigarray_to_floatarray" "noalloc" let to_floatarray a l = let fa = Obj.obj (Obj.new_block Obj.double_array_tag l) in unsafe_blit_to_floatarray a 0 fa 0 l; fa let to_this_floatarray fa a l = unsafe_blit_to_floatarray a 0 fa 0 l; fa let of_floatarray fa = let l = Array.length fa in let a = createf l in unsafe_blit_from_floatarray fa 0 a 0 l; a parmap-1.0-rc8/bytearray.mli000066400000000000000000000031171305367720600160440ustar00rootroot00000000000000(***************************************************************************) (* Copyright 1999-2010, Jérôme Vouillon *) (* *) (* This library is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU Lesser General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. A special linking *) (* exception to the GNU Lesser General Public License applies to this *) (* library, see the LICENSE file for more information. *) (***************************************************************************) type t = (char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t type tf = (float, Bigarray.float64_elt, Bigarray.c_layout) Bigarray.Array1.t val create : int -> t val length : t -> int val to_string : t -> string val of_string : string -> t val mmap_of_string : Unix.file_descr -> string -> t val to_floatarray : tf -> int -> float array val to_this_floatarray : float array -> tf -> int -> float array val of_floatarray : float array -> tf val sub : t -> int -> int -> string val blit_from_string : string -> int -> t -> int -> int -> unit val blit_to_string : t -> int -> string -> int -> int -> unit val prefix : t -> t -> int -> bool val marshal : 'a -> Marshal.extern_flags list -> t val unmarshal : t -> int -> 'a val marshal_to_buffer : t -> int -> 'a -> Marshal.extern_flags list -> int parmap-1.0-rc8/bytearray_stubs.c000066400000000000000000000041341305367720600167250ustar00rootroot00000000000000/* bytearray_stubs.c : C routines for bytearray.ml */ /* Copyright Jérôme Vouillon 1999-2010 (see LICENCE for distribution conditions) */ #include #include "caml/intext.h" #include "caml/bigarray.h" #define Array_data(a, i) (((char *) a->data) + Long_val(i)) #define Floatarray_data(a, i) (((char *) a->data) + 8 * Long_val(i)) CAMLprim value ml_marshal_to_bigarray(value v, value flags) { char *buf; long len; output_value_to_malloc(v, flags, &buf, &len); return alloc_bigarray(BIGARRAY_UINT8 | BIGARRAY_C_LAYOUT | BIGARRAY_MANAGED, 1, buf, &len); } CAMLprim value ml_marshal_to_bigarray_buffer(value b, value ofs, value v, value flags) { struct caml_bigarray *b_arr = Bigarray_val(b); return Val_long(caml_output_value_to_block(v, flags, Array_data (b_arr, ofs), b_arr->dim[0] - Long_val(ofs))); } CAMLprim value ml_unmarshal_from_bigarray(value b, value ofs) { struct caml_bigarray *b_arr = Bigarray_val(b); return input_value_from_block (Array_data (b_arr, ofs), b_arr->dim[0] - Long_val(ofs)); } CAMLprim value ml_blit_string_to_bigarray (value s, value i, value a, value j, value l) { char *src = String_val(s) + Int_val(i); char *dest = Array_data(Bigarray_val(a), j); memcpy(dest, src, Long_val(l)); return Val_unit; } CAMLprim value ml_blit_bigarray_to_string (value a, value i, value s, value j, value l) { char *src = Array_data(Bigarray_val(a), i); char *dest = String_val(s) + Long_val(j); memcpy(dest, src, Long_val(l)); return Val_unit; } CAMLprim value ml_blit_floatarray_to_bigarray (value fa, value i, value a, value j, value l) { int w = 8; char *src = Bp_val(fa) + Long_val(i)*w; char *dest = Floatarray_data(Bigarray_val(a), j); memcpy(dest, src, Long_val(l)*w); return Val_unit; } CAMLprim value ml_blit_bigarray_to_floatarray (value a, value i, value fa, value j, value l) { int w = 8; char *src = Floatarray_data(Bigarray_val(a), i); char *dest = Bp_val(fa) + Long_val(j)*w; memcpy(dest, src, Long_val(l)*w); return Val_unit; } parmap-1.0-rc8/config.h.in000066400000000000000000000034051305367720600153620ustar00rootroot00000000000000/* config.h.in. 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" >&6; } if ${ac_cv_prog_ac_ct_OCAMLOPT+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLOPT"; then ac_cv_prog_ac_ct_OCAMLOPT="$ac_ct_OCAMLOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLOPT="ocamlopt" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLOPT=$ac_cv_prog_ac_ct_OCAMLOPT if test -n "$ac_ct_OCAMLOPT"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLOPT" >&5 $as_echo "$ac_ct_OCAMLOPT" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLOPT" = x; then OCAMLOPT="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLOPT=$ac_ct_OCAMLOPT fi else OCAMLOPT="$ac_cv_prog_OCAMLOPT" fi OCAMLBEST=byte if test "$OCAMLOPT" = "no"; then { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Cannot find ocamlopt; bytecode compilation only." >&5 $as_echo "$as_me: WARNING: Cannot find ocamlopt; bytecode compilation only." >&2;} else TMPVERSION=`$OCAMLOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: versions differs from ocamlc; ocamlopt discarded." >&5 $as_echo "versions differs from ocamlc; ocamlopt discarded." >&6; } OCAMLOPT=no else OCAMLBEST=opt fi fi # checking for ocamlc.opt if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlc.opt", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlc.opt; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... 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" >&6; } if ${ac_cv_prog_ac_ct_OCAMLCDOTOPT+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLCDOTOPT"; then ac_cv_prog_ac_ct_OCAMLCDOTOPT="$ac_ct_OCAMLCDOTOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLCDOTOPT="ocamlc.opt" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLCDOTOPT=$ac_cv_prog_ac_ct_OCAMLCDOTOPT if test -n "$ac_ct_OCAMLCDOTOPT"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLCDOTOPT" >&5 $as_echo "$ac_ct_OCAMLCDOTOPT" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLCDOTOPT" = x; then OCAMLCDOTOPT="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLCDOTOPT=$ac_ct_OCAMLCDOTOPT fi else OCAMLCDOTOPT="$ac_cv_prog_OCAMLCDOTOPT" fi if test "$OCAMLCDOTOPT" != "no"; then TMPVERSION=`$OCAMLCDOTOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: versions differs from ocamlc; ocamlc.opt discarded." >&5 $as_echo "versions differs from ocamlc; ocamlc.opt discarded." >&6; } else OCAMLC=$OCAMLCDOTOPT fi fi # checking for ocamlopt.opt if test "$OCAMLOPT" != "no" ; then if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlopt.opt", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlopt.opt; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OCAMLOPTDOTOPT+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OCAMLOPTDOTOPT"; then ac_cv_prog_OCAMLOPTDOTOPT="$OCAMLOPTDOTOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLOPTDOTOPT="${ac_tool_prefix}ocamlopt.opt" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OCAMLOPTDOTOPT=$ac_cv_prog_OCAMLOPTDOTOPT if test -n "$OCAMLOPTDOTOPT"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OCAMLOPTDOTOPT" >&5 $as_echo "$OCAMLOPTDOTOPT" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLOPTDOTOPT"; then ac_ct_OCAMLOPTDOTOPT=$OCAMLOPTDOTOPT # Extract the first word of "ocamlopt.opt", so it can be a program name with args. set dummy ocamlopt.opt; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OCAMLOPTDOTOPT+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLOPTDOTOPT"; then ac_cv_prog_ac_ct_OCAMLOPTDOTOPT="$ac_ct_OCAMLOPTDOTOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLOPTDOTOPT="ocamlopt.opt" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLOPTDOTOPT=$ac_cv_prog_ac_ct_OCAMLOPTDOTOPT if test -n "$ac_ct_OCAMLOPTDOTOPT"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLOPTDOTOPT" >&5 $as_echo "$ac_ct_OCAMLOPTDOTOPT" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLOPTDOTOPT" = x; then OCAMLOPTDOTOPT="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLOPTDOTOPT=$ac_ct_OCAMLOPTDOTOPT fi else OCAMLOPTDOTOPT="$ac_cv_prog_OCAMLOPTDOTOPT" fi if test "$OCAMLOPTDOTOPT" != "no"; then TMPVERSION=`$OCAMLOPTDOTOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: version differs from ocamlc; ocamlopt.opt discarded." >&5 $as_echo "version differs from ocamlc; ocamlopt.opt discarded." >&6; } else OCAMLOPT=$OCAMLOPTDOTOPT fi fi fi fi # checking for native dynlink { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dynlink.cmxa" >&5 $as_echo_n "checking for dynlink.cmxa... " >&6; } if test -f "$OCAMLLIB/dynlink.cmxa" ; then OCAMLNATDYNLINK=yes { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 $as_echo "yes" >&6; } else OCAMLNATDYNLINK=no { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi # checking for ocaml toplevel if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocaml", so it can be a program name with args. set dummy ${ac_tool_prefix}ocaml; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OCAML+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OCAML"; then ac_cv_prog_OCAML="$OCAML" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_OCAML="${ac_tool_prefix}ocaml" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OCAML=$ac_cv_prog_OCAML if test -n "$OCAML"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OCAML" >&5 $as_echo "$OCAML" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAML"; then ac_ct_OCAML=$OCAML # Extract the first word of "ocaml", so it can be a program name with args. set dummy ocaml; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OCAML+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAML"; then ac_cv_prog_ac_ct_OCAML="$ac_ct_OCAML" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAML="ocaml" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAML=$ac_cv_prog_ac_ct_OCAML if test -n "$ac_ct_OCAML"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAML" >&5 $as_echo "$ac_ct_OCAML" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAML" = x; then OCAML="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAML=$ac_ct_OCAML fi else OCAML="$ac_cv_prog_OCAML" fi # checking for ocamldep if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamldep", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamldep; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OCAMLDEP+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OCAMLDEP"; then ac_cv_prog_OCAMLDEP="$OCAMLDEP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLDEP="${ac_tool_prefix}ocamldep" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OCAMLDEP=$ac_cv_prog_OCAMLDEP if test -n "$OCAMLDEP"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OCAMLDEP" >&5 $as_echo "$OCAMLDEP" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLDEP"; then ac_ct_OCAMLDEP=$OCAMLDEP # Extract the first word of "ocamldep", so it can be a program name with args. set dummy ocamldep; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OCAMLDEP+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLDEP"; then ac_cv_prog_ac_ct_OCAMLDEP="$ac_ct_OCAMLDEP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLDEP="ocamldep" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLDEP=$ac_cv_prog_ac_ct_OCAMLDEP if test -n "$ac_ct_OCAMLDEP"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLDEP" >&5 $as_echo "$ac_ct_OCAMLDEP" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLDEP" = x; then OCAMLDEP="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLDEP=$ac_ct_OCAMLDEP fi else OCAMLDEP="$ac_cv_prog_OCAMLDEP" fi # checking for ocamlmktop if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlmktop", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlmktop; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OCAMLMKTOP+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OCAMLMKTOP"; then ac_cv_prog_OCAMLMKTOP="$OCAMLMKTOP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLMKTOP="${ac_tool_prefix}ocamlmktop" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OCAMLMKTOP=$ac_cv_prog_OCAMLMKTOP if test -n "$OCAMLMKTOP"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OCAMLMKTOP" >&5 $as_echo "$OCAMLMKTOP" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLMKTOP"; then ac_ct_OCAMLMKTOP=$OCAMLMKTOP # Extract the first word of "ocamlmktop", so it can be a program name with args. set dummy ocamlmktop; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OCAMLMKTOP+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLMKTOP"; then ac_cv_prog_ac_ct_OCAMLMKTOP="$ac_ct_OCAMLMKTOP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLMKTOP="ocamlmktop" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLMKTOP=$ac_cv_prog_ac_ct_OCAMLMKTOP if test -n "$ac_ct_OCAMLMKTOP"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLMKTOP" >&5 $as_echo "$ac_ct_OCAMLMKTOP" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLMKTOP" = x; then OCAMLMKTOP="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLMKTOP=$ac_ct_OCAMLMKTOP fi else OCAMLMKTOP="$ac_cv_prog_OCAMLMKTOP" fi # checking for ocamlmklib if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlmklib", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlmklib; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OCAMLMKLIB+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OCAMLMKLIB"; then ac_cv_prog_OCAMLMKLIB="$OCAMLMKLIB" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLMKLIB="${ac_tool_prefix}ocamlmklib" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OCAMLMKLIB=$ac_cv_prog_OCAMLMKLIB if test -n "$OCAMLMKLIB"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OCAMLMKLIB" >&5 $as_echo "$OCAMLMKLIB" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLMKLIB"; then ac_ct_OCAMLMKLIB=$OCAMLMKLIB # Extract the first word of "ocamlmklib", so it can be a program name with args. set dummy ocamlmklib; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OCAMLMKLIB+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLMKLIB"; then ac_cv_prog_ac_ct_OCAMLMKLIB="$ac_ct_OCAMLMKLIB" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLMKLIB="ocamlmklib" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLMKLIB=$ac_cv_prog_ac_ct_OCAMLMKLIB if test -n "$ac_ct_OCAMLMKLIB"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLMKLIB" >&5 $as_echo "$ac_ct_OCAMLMKLIB" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLMKLIB" = x; then OCAMLMKLIB="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLMKLIB=$ac_ct_OCAMLMKLIB fi else OCAMLMKLIB="$ac_cv_prog_OCAMLMKLIB" fi # checking for ocamldoc if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamldoc", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamldoc; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OCAMLDOC+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OCAMLDOC"; then ac_cv_prog_OCAMLDOC="$OCAMLDOC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLDOC="${ac_tool_prefix}ocamldoc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OCAMLDOC=$ac_cv_prog_OCAMLDOC if test -n "$OCAMLDOC"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OCAMLDOC" >&5 $as_echo "$OCAMLDOC" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLDOC"; then ac_ct_OCAMLDOC=$OCAMLDOC # Extract the first word of "ocamldoc", so it can be a program name with args. set dummy ocamldoc; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OCAMLDOC+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLDOC"; then ac_cv_prog_ac_ct_OCAMLDOC="$ac_ct_OCAMLDOC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLDOC="ocamldoc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLDOC=$ac_cv_prog_ac_ct_OCAMLDOC if test -n "$ac_ct_OCAMLDOC"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLDOC" >&5 $as_echo "$ac_ct_OCAMLDOC" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLDOC" = x; then OCAMLDOC="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLDOC=$ac_ct_OCAMLDOC fi else OCAMLDOC="$ac_cv_prog_OCAMLDOC" fi # checking for ocamlbuild if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlbuild", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlbuild; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OCAMLBUILD+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OCAMLBUILD"; then ac_cv_prog_OCAMLBUILD="$OCAMLBUILD" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLBUILD="${ac_tool_prefix}ocamlbuild" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OCAMLBUILD=$ac_cv_prog_OCAMLBUILD if test -n "$OCAMLBUILD"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OCAMLBUILD" >&5 $as_echo "$OCAMLBUILD" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLBUILD"; then ac_ct_OCAMLBUILD=$OCAMLBUILD # Extract the first word of "ocamlbuild", so it can be a program name with args. set dummy ocamlbuild; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OCAMLBUILD+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLBUILD"; then ac_cv_prog_ac_ct_OCAMLBUILD="$ac_ct_OCAMLBUILD" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLBUILD="ocamlbuild" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLBUILD=$ac_cv_prog_ac_ct_OCAMLBUILD if test -n "$ac_ct_OCAMLBUILD"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLBUILD" >&5 $as_echo "$ac_ct_OCAMLBUILD" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLBUILD" = x; then OCAMLBUILD="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLBUILD=$ac_ct_OCAMLBUILD fi else OCAMLBUILD="$ac_cv_prog_OCAMLBUILD" fi if test "$OCAMLC" = "no"; then as_fn_error $? "You must install the OCaml compiler" "$LINENO" 5 fi # checking for ocamlfind if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlfind", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlfind; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OCAMLFIND+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OCAMLFIND"; then ac_cv_prog_OCAMLFIND="$OCAMLFIND" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLFIND="${ac_tool_prefix}ocamlfind" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OCAMLFIND=$ac_cv_prog_OCAMLFIND if test -n "$OCAMLFIND"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OCAMLFIND" >&5 $as_echo "$OCAMLFIND" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLFIND"; then ac_ct_OCAMLFIND=$OCAMLFIND # Extract the first word of "ocamlfind", so it can be a program name with args. set dummy ocamlfind; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OCAMLFIND+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OCAMLFIND"; then ac_cv_prog_ac_ct_OCAMLFIND="$ac_ct_OCAMLFIND" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLFIND="ocamlfind" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OCAMLFIND=$ac_cv_prog_ac_ct_OCAMLFIND if test -n "$ac_ct_OCAMLFIND"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLFIND" >&5 $as_echo "$ac_ct_OCAMLFIND" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OCAMLFIND" = x; then OCAMLFIND="no" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLFIND=$ac_ct_OCAMLFIND fi else OCAMLFIND="$ac_cv_prog_OCAMLFIND" fi if test "$OCAMLFIND" = "no"; then as_fn_error $? "You must install OCaml findlib (the ocamlfind command)" "$LINENO" 5 fi ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' ac_compiler_gnu=$ac_cv_c_compiler_gnu if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args. set dummy ${ac_tool_prefix}gcc; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_CC+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_CC="${ac_tool_prefix}gcc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi CC=$ac_cv_prog_CC if test -n "$CC"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 $as_echo "$CC" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_CC"; then ac_ct_CC=$CC # Extract the first word of "gcc", so it can be a program name with args. set dummy gcc; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_CC+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_CC"; then ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_CC="gcc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_CC=$ac_cv_prog_ac_ct_CC if test -n "$ac_ct_CC"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 $as_echo "$ac_ct_CC" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_CC" = x; then CC="" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac CC=$ac_ct_CC fi else CC="$ac_cv_prog_CC" fi if test -z "$CC"; then if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. set dummy ${ac_tool_prefix}cc; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_CC+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_CC="${ac_tool_prefix}cc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi CC=$ac_cv_prog_CC if test -n "$CC"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 $as_echo "$CC" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi fi if test -z "$CC"; then # Extract the first word of "cc", so it can be a program name with args. set dummy cc; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_CC+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else ac_prog_rejected=no as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then ac_prog_rejected=yes continue fi ac_cv_prog_CC="cc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS if test $ac_prog_rejected = yes; then # We found a bogon in the path, so make sure we never use it. set dummy $ac_cv_prog_CC shift if test $# != 0; then # We chose a different compiler from the bogus one. # However, it has the same basename, so the bogon will be chosen # first if we set CC to just the basename; use the full file name. shift ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" fi fi fi fi CC=$ac_cv_prog_CC if test -n "$CC"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 $as_echo "$CC" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$CC"; then if test -n "$ac_tool_prefix"; then for ac_prog in cl.exe do # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. set dummy $ac_tool_prefix$ac_prog; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_CC+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_CC="$ac_tool_prefix$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi CC=$ac_cv_prog_CC if test -n "$CC"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 $as_echo "$CC" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi test -n "$CC" && break done fi if test -z "$CC"; then ac_ct_CC=$CC for ac_prog in cl.exe do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... 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Use standard Makefile) AC_CONFIG_FILES([Makefile]) AC_OUTPUT else AC_MSG_RESULT(ocamlbuild does not exists or it does not support -use-ocamlfind) AC_CONFIG_FILES([Makefile_3.11]) AC_OUTPUT mv Makefile_3.11 Makefile fi parmap-1.0-rc8/example/000077500000000000000000000000001305367720600147705ustar00rootroot00000000000000parmap-1.0-rc8/example/LICENCE000066400000000000000000000432541305367720600157650ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Lesser General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.) These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it. Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely by you; rather, the intent is to exercise the right to control the distribution of derivative or collective works based on the Program. In addition, mere aggregation of another work not based on the Program with the Program (or with a work based on the Program) on a volume of a storage or distribution medium does not bring the other work under the scope of this License. 3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.) The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable. If distribution of executable or object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code. 4. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance. 5. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute the Program or its derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. 7. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program. If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances. It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice. This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. 8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. parmap-1.0-rc8/example/Makefile000066400000000000000000000005701305367720600164320ustar00rootroot00000000000000OCAMLBUILD=ocamlbuild OBFLAGS := -j 10 -use-ocamlfind OCAMLBEST=native TARGETS = \ mandels.$(OCAMLBEST) all: $(OCAMLBUILD) $(OBFLAGS) $(TARGETS) mandels_sdl.native: mandels_sdl.ml ocamlfind ocamlopt -linkpkg -package bigarray -package graphics -package parmap -package unix -package sdl mandels_sdl.ml -o mandels_sdl.native .PHONY: clean clean: $(OCAMLBUILD) -clean parmap-1.0-rc8/example/Makefile.OSX000066400000000000000000000011211305367720600170730ustar00rootroot00000000000000# to build the sdl version, you will need at least the command line tools from Xcode, # also, sdl. brew install sdl sdl_gfx sdl_image should be (more than) enough OCAMLBUILD=ocamlbuild OBFLAGS := -j 10 -use-ocamlfind OCAMLBEST=native TARGETS = \ mandels.$(OCAMLBEST) all: $(OCAMLBUILD) $(OBFLAGS) $(TARGETS) mandels_sdl.native: mandels_sdl.ml ocamlfind ocamlopt -ccopt "-framework CoreFoundation -framework Cocoa" -linkpkg -package bigarray -package graphics -package parmap -package unix -package sdl mandels_sdl.ml -o mandels_sdl.native .PHONY: clean clean: $(OCAMLBUILD) -clean parmap-1.0-rc8/example/_tags000066400000000000000000000001651305367720600160120ustar00rootroot00000000000000<*>: package(unix), package(bigarray), package(parmap) : package(graphics) : package(sdl) parmap-1.0-rc8/example/mandels.ml000066400000000000000000000146541305367720600167570ustar00rootroot00000000000000(**************************************************************************) (* Sample use of ParMap, a simple library to perform Map computations on *) (* a multi-core *) (* *) (* Author(s): Marco Danelutto and Roberto Di Cosmo *) (* *) (* This program is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. *) (**************************************************************************) (* for the toplevel #use "topfind";; #require "graphics";; #require "parmap";; *) open Graphics;; let n = ref 1000;; (* the size of the square screen windows in pixels *) let res = ref 1000;; (* the resolution: maximum number of iterations allowed *) (* scale factor and offset of the picture *) let scale = ref 1.;; let ofx = ref 0.;; let ofy = ref 0.;; (* convert an integer in the range 0..res into a screen color *) let color_of c res = Pervasives.truncate (((float c)/.(float res))*.(float Graphics.white));; (* compute the color of a pixel by iterating z_n+1=z_n^2+c *) (* j,k are the pixel coordinates *) let pixel (j,k,n) = let zr = ref 0.0 in let zi = ref 0.0 in let cr = ref 0.0 in let ci = ref 0.0 in let zrs = ref 0.0 in let zis = ref 0.0 in let d = ref (2.0 /. ((float n) -. 1.0)) in let colour = Array.create n (Graphics.black) in for s = 0 to (n-1) do let j1 = ref (((float j.(s)) +. !ofx) /. !scale) in let k1 = ref (((float k) +. !ofy) /. !scale) in begin zr := !j1 *. !d -. 1.0; zi := !k1 *. !d -. 1.0; cr := !zr; ci := !zi; zrs := 0.0; zis := 0.0; for i=0 to (!res-1) do begin if(not((!zrs +. !zis) > 4.0)) then begin zrs := !zr *. !zr; zis := !zi *. !zi; zi := 2.0 *. !zr *. !zi +. !ci; zr := !zrs -. !zis +. !cr; Array.set colour s (color_of i !res); end; end done end done; (colour,k);; (* draw a line on the screen using fast image functions *) let show_a_result r = match r with (col,j) -> draw_image (make_image [| col |]) 0 j;; (* generate the initial configuration *) let initsegm n = let rec aux acc = function 0 -> acc | n -> aux (n::acc) (n-1) in aux [] n ;; let tasks = let ini = Array.create !n 0 in let iniv = for i=0 to (!n-1) do Array.set ini i i done; ini in List.map (fun seed -> (iniv,seed,!n)) (initsegm !n) ;; let draw res = List.iter show_a_result res;; (*** fork compute back-end *) type signal = Compute of int*float*float*float*int*int (* resolution, ofx, ofy, scale, ncores, chunksize *) | Exit (* finished computation *) ;; let cmdpipe_rd,cmdpipe_wr=Unix.pipe ();; let respipe_rd,respipe_wr=Unix.pipe ();; match Unix.fork() with 0 -> begin (* compute back-end *) Unix.close cmdpipe_wr; Unix.close respipe_rd; let ic = Unix.in_channel_of_descr cmdpipe_rd in let oc = Unix.out_channel_of_descr respipe_wr in while true do let msg = try Marshal.from_channel ic with _ -> exit 0 in match msg with Compute (res',ofx',ofy',scale',nc',cs') -> Printf.eprintf "Got task...\n%!"; res:=res';ofx:=ofx';ofy:=ofy';scale:=scale'; let m = Parmap.parmap ~ncores:nc' ~chunksize: cs' pixel (Parmap.L tasks) in (Marshal.to_channel oc m []; flush oc) | Exit -> exit 0 done end | -1 -> Printf.eprintf "fork error: pid %d" (Unix.getpid()); | pid -> () ;; (*** the main continues here *) Unix.close cmdpipe_rd;; Unix.close respipe_wr;; let out,read = let ic = Unix.in_channel_of_descr respipe_rd in let oc = Unix.out_channel_of_descr cmdpipe_wr in (fun m -> Marshal.to_channel oc m []; flush oc), (fun () -> Marshal.from_channel ic) ;; (* compute and draw *) let compute () = let _ = out (Compute (!res,!ofx,!ofy,!scale,4,1)) in read();; let redraw () = Printf.eprintf "Computing...%!"; draw(compute()); Printf.eprintf "done.\n%!";; (* event loop for zooming into the picture *) let rezoom x y w = let deltas = ((float !n)/.(float w)) in ofx := (!ofx +. (float x)) *. deltas; ofy := (!ofy +. (float y)) *. deltas; scale := !scale *. deltas; redraw();; let reset () = scale:=1.; ofx:=0.; ofy:=0.;redraw();; let refine () = res:=!res*2; redraw ();; let unrefine () = res:=!res/2; redraw ();; let zoom_in () = rezoom (!n/4) (!n/4) (!n/2);; let zoom_out () = rezoom (-(!n/2)) (-(!n/2)) (!n*2);; let dumpnum = ref 0;; let dump () = Printf.eprintf "Dumping image taken at ofx: %f ofy: %f scale: %f\n%!" !ofx !ofy !scale; let img = Graphics.dump_image (Graphics.get_image 0 0 !n !n) in let oc = open_out (Printf.sprintf "mandels.image.dump.%04d" !dumpnum) in Marshal.to_channel oc img []; dumpnum:=!dumpnum+1; close_out oc;; (* encode state machine here *) let rec init () = Printf.eprintf "Init...\n%!"; let s = wait_next_event [Button_down; Key_pressed] in if s.button then track_rect s.mouse_x s.mouse_y None else if s.keypressed then match s.key with '+' -> let _ = zoom_in() in init () | '-' -> let _ = zoom_out() in init () | 'r' -> let _ = refine () in init () | 'u' -> let _ = unrefine () in init () | 'c' -> let _ = reset() in init () | 'd' -> let _ = dump() in init () | 'q' -> close_graph() | _ -> init () and track_rect x y oldimg = Printf.eprintf "Rect...\n%!"; let s = wait_next_event [Button_up; Mouse_motion] in let x'=s.mouse_x and y'=s.mouse_y in let bx,by,w,h = (min x x'), (min y y'), (abs (x'-x)), (abs (y'-y)) in if s.button then begin (* restore image if we are in the loop *) (match oldimg with None -> () | Some (i,x,y) -> draw_image i x y); if w>0 & h>0 then let i = get_image bx by w h in (* draw the border _inside_ the area *) draw_rect bx by (w-1) (h-1); track_rect x y (Some(i,bx,by)) else track_rect x y oldimg end else (rezoom bx by (min w h); init()) ;; (*** Open the main graphics window and run the event loop *) Graphics.set_window_title "Mandelbrot";; Graphics.open_graph (" "^(string_of_int !n)^"x"^(string_of_int !n));; redraw();; init() parmap-1.0-rc8/example/mandels_sdl.ml000066400000000000000000000203571305367720600176160ustar00rootroot00000000000000(**************************************************************************) (* Sample use of ParMap, a simple library to perform Map computations on *) (* a multi-core *) (* *) (* Author(s): Marco Danelutto and Roberto Di Cosmo *) (* *) (* This program is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. *) (**************************************************************************) (* for the toplevel #use "topfind";; #require "graphics";; #require "parmap";; #require "sdl";; *) let ncores = ref 4;; (* how many core we use *) let chunksize = ref 1;; (* granularity *) let n = ref 1000;; (* the size of the square screen windows in pixels *) let res = ref 1000;; (* the resolution: maximum number of iterations allowed *) (* scale factor and offset of the picture *) let scale = ref 1.;; let ofx = ref 0.;; let ofy = ref 0.;; (* convert an integer in the range 0..res into a screen color *) let color_of c res = Pervasives.truncate (((float c)/.(float res))*.(float Graphics.white));; (* compute the color of a pixel by iterating z_n+1=z_n^2+c *) (* j,k are the pixel coordinates *) let pixel (j,k,n) = let zr = ref 0.0 in let zi = ref 0.0 in let cr = ref 0.0 in let ci = ref 0.0 in let zrs = ref 0.0 in let zis = ref 0.0 in let d = ref (2.0 /. ((float n) -. 1.0)) in let colour = Array.create n (Graphics.black) in for s = 0 to (n-1) do let j1 = ref (((float j.(s)) +. !ofx) /. !scale) in let k1 = ref (((float k) +. !ofy) /. !scale) in begin zr := !j1 *. !d -. 1.0; zi := !k1 *. !d -. 1.0; cr := !zr; ci := !zi; zrs := 0.0; zis := 0.0; for i=0 to (!res-1) do begin if(not((!zrs +. !zis) > 4.0)) then begin zrs := !zr *. !zr; zis := !zi *. !zi; zi := 2.0 *. !zr *. !zi +. !ci; zr := !zrs -. !zis +. !cr; Array.set colour s (color_of i !res); end; end done end done; (colour,k);; (* generate the initial configuration *) let initsegm n = let rec aux acc = function 0 -> acc | n -> aux (n::acc) (n-1) in aux [] n ;; let tasks = let ini = Array.create !n 0 in let iniv = for i=0 to (!n-1) do Array.set ini i i done; ini in List.map (fun seed -> (iniv,seed,!n)) (initsegm !n) ;; (* draw a line on the screen using fast image functions *) let unpack_color n = let r = (n land 0xff0000) lsr 16 and g = (n land 0x00ff00) lsr 8 and b = n land 0xff in (r,g,b) ;; let draw_line screen (col,j) = Array.iteri (fun i c -> Sdlvideo.put_pixel_color screen i j (unpack_color c)) col;; let draw screen res = List.iter (fun c -> draw_line screen c) res;; (* compute *) let compute () = let d = Unix.gettimeofday() in let res = if !ncores > 1 then Parmap.parmap ~ncores: !ncores ~chunksize: !chunksize pixel (Parmap.L tasks) else List.map pixel tasks in Printf.eprintf " [time: %f] %!" (Unix.gettimeofday() -. d); res ;; (*** Open the main graphics window and run the event loop *) open Sdlevent;; open Sdlkey;; open Sdlvideo;; Sdl.init [`VIDEO];; let (bpp, w, h) = (24, !n, !n);; let screen = Sdlvideo.set_video_mode ~w ~h ~bpp [];; (* two pixel deep surfaces for drawing and saving area borders *) (* one pixel for each border: two horizontal and two vertical *) let shadowh = Sdlvideo.create_RGB_surface_format screen [`SWSURFACE] ~w ~h:2;; let shadowv = Sdlvideo.create_RGB_surface_format screen [`SWSURFACE] ~w:2 ~h;; (* one pixel deep white surfaces for drawing area borders *) let whiteh = let surf = Sdlvideo.create_RGB_surface_format screen [`SWSURFACE] ~w ~h:1 in for i = 0 to w-1 do Sdlvideo.put_pixel_color ~x:i ~y:0 surf Sdlvideo.white done; surf;; let whitev = let surf = Sdlvideo.create_RGB_surface_format screen [`SWSURFACE] ~w:1 ~h in for i = 0 to h-1 do Sdlvideo.put_pixel_color ~x:0 ~y:i surf Sdlvideo.white done; surf;; (* blit a rectangle border *) type action = Draw | Save | Restore | Update;; let border action x y w h = let hrect1 = {r_x=x;r_y=y;r_w=w;r_h=1} and vrect1 = {r_x=x;r_y=y;r_w=1;r_h=h} and hrect2 = {r_x=x;r_y=y+h;r_w=w;r_h=1} and vrect2 = {r_x=x+w;r_y=y;r_w=1;r_h=h} in match action with Draw -> blit_surface ~src:whiteh ~src_rect:{hrect1 with r_y=0;r_h=1} ~dst:screen ~dst_rect:hrect1 (); blit_surface ~src:whiteh ~src_rect:{hrect2 with r_y=0;r_h=1} ~dst:screen ~dst_rect:hrect2 (); blit_surface ~src:whitev ~src_rect:{vrect1 with r_x=0;r_w=1} ~dst:screen ~dst_rect:vrect1 (); blit_surface ~src:whitev ~src_rect:{vrect2 with r_x=0;r_w=1} ~dst:screen ~dst_rect:vrect2 () | Save -> blit_surface ~dst:shadowh ~dst_rect:{hrect1 with r_y=0;r_h=1} ~src:screen ~src_rect:hrect1 (); blit_surface ~dst:shadowh ~dst_rect:{hrect2 with r_y=1;r_h=1} ~src:screen ~src_rect:hrect2 (); blit_surface ~dst:shadowv ~dst_rect:{vrect1 with r_x=0;r_w=1} ~src:screen ~src_rect:vrect1 (); blit_surface ~dst:shadowv ~dst_rect:{vrect2 with r_x=1;r_w=1} ~src:screen ~src_rect:vrect2 () | Restore -> blit_surface ~src:shadowh ~src_rect:{hrect1 with r_y=0;r_h=1} ~dst:screen ~dst_rect:hrect1 (); blit_surface ~src:shadowh ~src_rect:{hrect2 with r_y=1;r_h=1} ~dst:screen ~dst_rect:hrect2 (); blit_surface ~src:shadowv ~src_rect:{vrect1 with r_x=0;r_w=1} ~dst:screen ~dst_rect:vrect1 (); blit_surface ~src:shadowv ~src_rect:{vrect2 with r_x=1;r_w=1} ~dst:screen ~dst_rect:vrect2 () | Update -> List.iter (fun r -> Sdlvideo.update_rect ~rect:r screen) [hrect1;hrect2;vrect1;vrect2] ;; (* draw *) let redraw () = Printf.eprintf "Computing...%!"; draw screen (compute()); Sdlvideo.update_rect screen; Printf.eprintf "done.\n%!";; (* event loop for zooming into the picture *) let rezoom x y w = let deltas = ((float !n)/.(float w)) in ofx := (!ofx +. (float x)) *. deltas; ofy := (!ofy +. (float y)) *. deltas; scale := !scale *. deltas; redraw();; let reset () = scale:=1.; ofx:=0.; ofy:=0.;redraw();; let refine () = res:=!res*2; redraw ();; let unrefine () = res:=!res/2; redraw ();; let zoom_in () = rezoom (!n/4) (!n/4) (!n/2);; let zoom_out () = rezoom (-(!n/2)) (-(!n/2)) (!n*2);; let dump () = Printf.eprintf "Dumping image taken at ofx: %f ofy: %f scale: %f\n%!" !ofx !ofy !scale; Sdlvideo.save_BMP screen (Printf.sprintf "mandels-ofx-%f-ofy-%f-scale-%f.bmp" !ofx !ofy !scale);; (* encode state machine here *) let rec init () = match wait_event () with | KEYDOWN {keysym=k} -> (match k with KEY_PLUS -> let _ = zoom_in() in init () | KEY_MINUS -> let _ = zoom_out() in init () | KEY_r -> let _ = refine () in init () | KEY_u -> let _ = unrefine () in init () | KEY_c -> let _ = reset() in init () | KEY_d -> let _ = dump() in init () | KEY_q -> Sdl.quit | _ -> init () ) | MOUSEBUTTONDOWN {mbe_x=x;mbe_y=y} -> track_rect x y (x,y,0,0) | _ -> init () and track_rect x y (ox,oy,ow,oh) = match wait_event () with | MOUSEBUTTONUP {mbe_x=x';mbe_y=y'} -> let bx,by,w,h = (min x x'), (min y y'), (abs (x'-x)), (abs (y'-y)) in (rezoom bx by (min w h); init()) | MOUSEMOTION {mme_x=x';mme_y=y'} -> let bx,by,w,h = (min x x'), (min y y'), (abs (x'-x)), (abs (y'-y)) in (* restore old image if necessary *) if ow>0 & oh>0 then begin border Restore ox oy ow oh; border Update ox oy ow oh end; (* save image if necessary *) if w>0 & h>0 then begin border Save bx by w h; (* draw the border *) border Draw bx by w h; border Update bx by w h; end; track_rect x y (bx,by,w,h) | _ -> track_rect x y (ox,oy,ow,oh) ;; let _ = let getarg i = max 1 (int_of_string Sys.argv.(i)) in try ncores := getarg 1;Printf.eprintf "Setting nproc = %d \n%!" !ncores; chunksize := getarg 2;Printf.eprintf "Setting chunksize = %d \n%!" !chunksize with _ -> () ;; redraw();; init() parmap-1.0-rc8/example/topnat.ml000066400000000000000000000005651305367720600166350ustar00rootroot00000000000000(* simple exemple to show how to use Parmap on the native toplevel *) (* just run ocamlnat and then #use this file *) #load "unix.cmxs";; #load "bigarray.cmxs";; #load "parmap.cmxs";; let mkn n = let rec aux acc = function 0 -> acc | n -> aux (n::acc) (n-1) in aux [] n;; Printf.printf "%d\n" (List.length (Parmap.parmap (fun x -> x+1) (Parmap.L (mkn 10000)) ~ncores:2));; parmap-1.0-rc8/libparmap_stubs.clib000066400000000000000000000000421305367720600173530ustar00rootroot00000000000000bytearray_stubs.o setcore_stubs.o parmap-1.0-rc8/m4/000077500000000000000000000000001305367720600136555ustar00rootroot00000000000000parmap-1.0-rc8/m4/ocaml.m4000066400000000000000000000144231305367720600152160ustar00rootroot00000000000000dnl autoconf macros for OCaml dnl dnl Copyright © 2013 Gabriel Kerneis dnl Copyright © 2009 Richard W.M. Jones dnl Copyright © 2009 Stefano Zacchiroli dnl Copyright © 2000-2005 Olivier Andrieu dnl Copyright © 2000-2005 Jean-Christophe Filliâtre dnl Copyright © 2000-2005 Georges Mariano dnl dnl For documentation, please read the ocaml.m4 man page. AC_DEFUN([AC_PROG_OCAML], [dnl # checking for ocamlc AC_CHECK_TOOL([OCAMLC],[ocamlc],[no]) if test "$OCAMLC" != "no"; then OCAMLVERSION=`$OCAMLC -v | sed -n -e 's|.*version* *\(.*\)$|\1|p'` AC_MSG_RESULT([OCaml version is $OCAMLVERSION]) # If OCAMLLIB is set, use it if test "$OCAMLLIB" = ""; then OCAMLLIB=`$OCAMLC -where 2>/dev/null | tr -d '\015' || $OCAMLC -v|tail -1|cut -d ' ' -f 4` else AC_MSG_RESULT([OCAMLLIB previously set; preserving it.]) fi AC_MSG_RESULT([OCaml library path is $OCAMLLIB]) AC_SUBST([OCAMLVERSION]) AC_SUBST([OCAMLLIB]) # checking for ocamlopt AC_CHECK_TOOL([OCAMLOPT],[ocamlopt],[no]) OCAMLBEST=byte if test "$OCAMLOPT" = "no"; then AC_MSG_WARN([Cannot find ocamlopt; bytecode compilation only.]) else TMPVERSION=`$OCAMLOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then AC_MSG_RESULT([versions differs from ocamlc; ocamlopt discarded.]) OCAMLOPT=no else OCAMLBEST=opt fi fi AC_SUBST([OCAMLBEST]) # checking for ocamlc.opt AC_CHECK_TOOL([OCAMLCDOTOPT],[ocamlc.opt],[no]) if test "$OCAMLCDOTOPT" != "no"; then TMPVERSION=`$OCAMLCDOTOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then AC_MSG_RESULT([versions differs from ocamlc; ocamlc.opt discarded.]) else OCAMLC=$OCAMLCDOTOPT fi fi # checking for ocamlopt.opt if test "$OCAMLOPT" != "no" ; then AC_CHECK_TOOL([OCAMLOPTDOTOPT],[ocamlopt.opt],[no]) if test "$OCAMLOPTDOTOPT" != "no"; then TMPVERSION=`$OCAMLOPTDOTOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then AC_MSG_RESULT([version differs from ocamlc; ocamlopt.opt discarded.]) else OCAMLOPT=$OCAMLOPTDOTOPT fi fi fi AC_SUBST([OCAMLOPT]) fi AC_SUBST([OCAMLC]) # checking for native dynlink AC_MSG_CHECKING([for dynlink.cmxa]) if test -f "$OCAMLLIB/dynlink.cmxa" ; then OCAMLNATDYNLINK=yes AC_MSG_RESULT([yes]) else OCAMLNATDYNLINK=no AC_MSG_RESULT([no]) fi AC_SUBST([OCAMLNATDYNLINK]) # checking for ocaml toplevel AC_CHECK_TOOL([OCAML],[ocaml],[no]) # checking for ocamldep AC_CHECK_TOOL([OCAMLDEP],[ocamldep],[no]) # checking for ocamlmktop AC_CHECK_TOOL([OCAMLMKTOP],[ocamlmktop],[no]) # checking for ocamlmklib AC_CHECK_TOOL([OCAMLMKLIB],[ocamlmklib],[no]) # checking for ocamldoc AC_CHECK_TOOL([OCAMLDOC],[ocamldoc],[no]) # checking for ocamlbuild AC_CHECK_TOOL([OCAMLBUILD],[ocamlbuild],[no]) ]) AC_DEFUN([AC_PROG_OCAMLLEX], [dnl # checking for ocamllex AC_CHECK_TOOL([OCAMLLEX],[ocamllex],[no]) if test "$OCAMLLEX" != "no"; then AC_CHECK_TOOL([OCAMLLEXDOTOPT],[ocamllex.opt],[no]) if test "$OCAMLLEXDOTOPT" != "no"; then OCAMLLEX=$OCAMLLEXDOTOPT fi fi AC_SUBST([OCAMLLEX]) ]) AC_DEFUN([AC_PROG_OCAMLYACC], [dnl AC_CHECK_TOOL([OCAMLYACC],[ocamlyacc],[no]) AC_SUBST([OCAMLYACC]) ]) AC_DEFUN([AC_PROG_CAMLP4], [dnl AC_REQUIRE([AC_PROG_OCAML])dnl # checking for camlp4 AC_CHECK_TOOL([CAMLP4],[camlp4],[no]) if test "$CAMLP4" != "no"; then TMPVERSION=`$CAMLP4 -v 2>&1| sed -n -e 's|.*version *\(.*\)$|\1|p'` if test "$TMPVERSION" != "$OCAMLVERSION" ; then AC_MSG_RESULT([versions differs from ocamlc]) CAMLP4=no fi fi AC_SUBST([CAMLP4]) # checking for companion tools AC_CHECK_TOOL([CAMLP4BOOT],[camlp4boot],[no]) AC_CHECK_TOOL([CAMLP4O],[camlp4o],[no]) AC_CHECK_TOOL([CAMLP4OF],[camlp4of],[no]) AC_CHECK_TOOL([CAMLP4OOF],[camlp4oof],[no]) AC_CHECK_TOOL([CAMLP4ORF],[camlp4orf],[no]) AC_CHECK_TOOL([CAMLP4PROF],[camlp4prof],[no]) AC_CHECK_TOOL([CAMLP4R],[camlp4r],[no]) AC_CHECK_TOOL([CAMLP4RF],[camlp4rf],[no]) AC_SUBST([CAMLP4BOOT]) AC_SUBST([CAMLP4O]) AC_SUBST([CAMLP4OF]) AC_SUBST([CAMLP4OOF]) AC_SUBST([CAMLP4ORF]) AC_SUBST([CAMLP4PROF]) AC_SUBST([CAMLP4R]) AC_SUBST([CAMLP4RF]) ]) AC_DEFUN([AC_PROG_FINDLIB], [dnl AC_REQUIRE([AC_PROG_OCAML])dnl # checking for ocamlfind AC_CHECK_TOOL([OCAMLFIND],[ocamlfind],[no]) AC_SUBST([OCAMLFIND]) ]) dnl Thanks to Jim Meyering for working this next bit out for us. dnl XXX We should define AS_TR_SH if it's not defined already dnl (eg. for old autoconf). AC_DEFUN([AC_CHECK_OCAML_PKG], [dnl AC_REQUIRE([AC_PROG_FINDLIB])dnl AC_MSG_CHECKING([for OCaml findlib package $1]) unset found unset pkg found=no for pkg in $1 $2 ; do if $OCAMLFIND query $pkg >/dev/null 2>/dev/null; then AC_MSG_RESULT([found]) AS_TR_SH([OCAML_PKG_$1])=$pkg found=yes break fi done if test "$found" = "no" ; then AC_MSG_RESULT([not found]) AS_TR_SH([OCAML_PKG_$1])=no fi AC_SUBST(AS_TR_SH([OCAML_PKG_$1])) ]) AC_DEFUN([AC_CHECK_OCAML_MODULE], [dnl AC_MSG_CHECKING([for OCaml module $2]) cat > conftest.ml <&5 2>&5 ; then found=yes break fi done if test "$found" ; then AC_MSG_RESULT([$$1]) else AC_MSG_RESULT([not found]) $1=no fi AC_SUBST([$1]) ]) dnl XXX Cross-compiling AC_DEFUN([AC_CHECK_OCAML_WORD_SIZE], [dnl AC_REQUIRE([AC_PROG_OCAML])dnl AC_MSG_CHECKING([for OCaml compiler word size]) cat > conftest.ml < conftest.ml < dep ["compile"; "c"] ["config.h"]; (* flag ["ocaml"; "compile"] & S[A"-ccopt"; A"-O9"]; *) flag ["compile"; "c"] & S[ A"-ccopt"; A"-D_GNU_SOURCE"; A"-ccopt"; A"-fPIC" ]; flag ["link"; "library"; "ocaml"; "byte"; "use_libparmap"] & S[A"-dllib"; A"-lparmap_stubs"; ]; flag ["link"; "library"; "ocaml"; "native"; "use_libparmap"] & S[A"-cclib"; A"-lparmap_stubs"; ]; dep ["link"; "ocaml"; "use_libparmap"] ["libparmap_stubs.a"]; flag ["link"; "ocaml"; "link_libparmap"] (A"libparmap_stubs.a"); | _ -> () end parmap-1.0-rc8/oasis_test.sh000077500000000000000000000001521305367720600160470ustar00rootroot00000000000000#!/bin/bash set -x oasis setup ocaml setup.ml -configure ocaml setup.ml -build ocaml setup.ml -install parmap-1.0-rc8/opam000066400000000000000000000012731305367720600142170ustar00rootroot00000000000000opam-version: "1.2" maintainer: "Roberto Di Cosmo " authors: "Roberto Di Cosmo " homepage: "https://github.com/rdicosmo/parmap" dev-repo: "https://github.com/rdicosmo/parmap.git" bug-reports: "https://github.com/rdicosmo/parmap/issues" build: [ ["aclocal" "-I" "m4"] ["autoconf"] ["autoheader"] ["./configure"] [make "DESTDIR=%{prefix}%" "OCAMLLIBDIR=lib" ] ] install: [ [make "install" "DESTDIR=%{prefix}%" "OCAMLLIBDIR=lib"] ] remove: [ ["aclocal" "-I" "m4"] ["autoconf"] ["autoheader"] ["./configure"] [make "uninstall" "DESTDIR=%{prefix}%" "OCAMLLIBDIR=lib"] ] depends: [ "ocamlfind" "ocamlbuild" {build} "conf-autoconf" ] parmap-1.0-rc8/parmap.ml000066400000000000000000000571601305367720600151600ustar00rootroot00000000000000(**************************************************************************) (* ParMap: a simple library to perform Map computations on a multi-core *) (* *) (* Author(s): Marco Danelutto, Roberto Di Cosmo *) (* *) (* This library is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU Lesser General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. A special linking *) (* exception to the GNU Lesser General Public License applies to this *) (* library, see the LICENSE file for more information. *) (**************************************************************************) module Utils = Parmap_utils (* OS related constants *) (* sequence type, subsuming lists and arrays *) type 'a sequence = L of 'a list | A of 'a array let debug_enabled = ref false (* toggle debugging *) let debugging b = debug_enabled:=b (* default number of cores, and a setter function *) let default_ncores=ref (max 2 (Setcore.numcores()-1));; let set_default_ncores n = default_ncores := n;; let get_default_ncores () = !default_ncores;; let ncores = ref 0;; let set_ncores n = ncores := n;; let get_ncores () = !ncores (* worker process rank *) let masters_rank = -1 let rank = ref masters_rank let set_rank n = rank := n let get_rank () = !rank (* exception handling code *) let handle_exc core msg = Utils.log_error "aborting due to exception on core %d: %s" core msg; exit 1;; (* Helper functions for stdout/stderr redirection *) let can_redirect path = if not(Sys.file_exists path) then try Unix.mkdir path 0o777; true with Unix.Unix_error(e,_s,_s') -> (* another job may have created it between the check and the mkdir *) if e == Unix.EEXIST then true else begin (Printf.eprintf "[Pid %d]: Error creating %s : %s; proceeding \ without stdout/stderr redirection\n%!" (Unix.getpid ()) path (Unix.error_message e)); false end else true let log_debug fmt = Printf.kprintf ( if !debug_enabled then begin (fun s -> Format.eprintf "[Parmap]: %s@." s) end else ignore ) fmt (* freopen emulation, from Xavier's suggestion on OCaml mailing list *) let reopen_out outchan path fname = if can_redirect path then begin flush outchan; let filename = Filename.concat path fname in let fd1 = Unix.descr_of_out_channel outchan in let fd2 = Unix.openfile filename [Unix.O_WRONLY; Unix.O_CREAT; Unix.O_TRUNC] 0o666 in Unix.dup2 fd2 fd1; Unix.close fd2 end else () (* send stdout and stderr to a file to avoid mixing output from different cores, if enabled *) let redirect ?(path = (Printf.sprintf "/tmp/.parmap.%d" (Unix.getpid ()))) ~id = reopen_out stdout path (Printf.sprintf "stdout.%d" id); reopen_out stderr path (Printf.sprintf "stderr.%d" id);; (* unmarshal from a mmap seen as a bigarray *) let unmarshal fd = let a = Bigarray.Array1.map_file fd Bigarray.char Bigarray.c_layout true (-1) in let res = Bytearray.unmarshal a 0 in Unix.close fd; res (* marshal to a mmap seen as a bigarray *) (* System dependent notes: (* a reasonable size for mmapping a file containing even huge result data *) let huge_size = if Sys.word_size = 64 then 1 lsl 32 else 1 lsl 26 - on Linux kernels, we might allocate a mmapped memory area of huge_size and marshal into it directly let ba = Bigarray.Array1.map_file fd Bigarray.char Bigarray.c_layout true huge_size in ignore(Bytearray.marshal_to_buffer ba 0 v [Marshal.Closures]); Unix.close fd - to be compatible with other systems, notably Mac OS X, which insist in allocating *all* the declared memory area even for a sparse file, we must choose a less efficient approach: * marshal the value v to a string s, and compute its size * allocate a mmap of that exact size, * copy the string to that mmap this allocates twice as much memory, and incurs an extra copy of the value v *) let marshal fd v = let s = Marshal.to_string v [Marshal.Closures] in ignore(Bytearray.mmap_of_string fd s) (* Exit the program with calling [at_exit] handlers *) external sys_exit : int -> 'a = "caml_sys_exit" let spawn_many n ~in_subprocess = let rec loop i acc = if i = n then acc else match Unix.fork() with 0 -> (* [at_exit] handlers are called in reverse order of registration. By registering a handler that exits prematurely, we prevent the execution of handlers registered before the fork. This ignores the exit code provided by the user, but we ignore it anyway in [wait_for_pids]. *) at_exit (fun () -> sys_exit 0); set_rank i; in_subprocess i; exit 0 | -1 -> Utils.log_error "fork error: pid %d; i=%d" (Unix.getpid()) i; loop (i + 1) acc | pid -> loop (i + 1) (pid :: acc) in (* call the GC before forking *) Gc.compact (); loop 0 [] let wait_for_pids pids = let rec wait_for_pid pid = try ignore(Unix.waitpid [] pid : int * Unix.process_status) with | Unix.Unix_error (Unix.ECHILD, _, _) -> () | Unix.Unix_error (Unix.EINTR, _, _) -> wait_for_pid pid in List.iter wait_for_pid pids let run_many n ~in_subprocess = wait_for_pids (spawn_many n ~in_subprocess) (* a simple mapper function that computes 1/nth of the data on each of the n cores in one iteration *) let simplemapper (init:int -> unit) (finalize: unit -> unit) ncores' compute opid al collect = (* flush everything *) flush_all(); (* init task parameters *) let ln = Array.length al in set_ncores (min ln (max 1 ncores')); let chunksize = max 1 (ln / !ncores) in log_debug "simplemapper on %d elements, on %d cores, chunksize = %d%!" ln !ncores chunksize; (* create descriptors to mmap *) let fdarr=Array.init !ncores (fun _ -> Utils.tempfd()) in (* run children *) run_many !ncores ~in_subprocess:(fun i -> init i; (* call initialization function *) Pervasives.at_exit finalize; (* register finalization function *) let lo=i*chunksize in let hi=if i = !ncores - 1 then ln - 1 else (i + 1) * chunksize - 1 in let exc_handler e j = (* handle an exception at index j *) Utils.log_error "error at index j=%d in (%d,%d), chunksize=%d of a total of \ %d got exception %s on core %d \n%!" j lo hi chunksize (hi-lo+1) (Printexc.to_string e) i; exit 1 in let v = compute al lo hi opid exc_handler in marshal fdarr.(i) v); (* read in all data *) let res = ref [] in (* iterate in reverse order, to accumulate in the right order *) for i = 0 to !ncores - 1 do res:= ((unmarshal fdarr.((!ncores-1)-i)):'d)::!res; done; (* collect all results *) collect !res (* a simple iteration function that iterates on 1/nth of the data on each of the n cores *) let simpleiter init finalize ncores' compute al = (* flush everything *) flush_all(); (* init task parameters *) let ln = Array.length al in set_ncores (min ln (max 1 ncores')); let chunksize = max 1 (ln / !ncores) in log_debug "simplemapper on %d elements, on %d cores, chunksize = %d%!" ln !ncores chunksize; (* run children *) run_many !ncores ~in_subprocess:(fun i -> init i; (* call initialization function *) Pervasives.at_exit finalize; (* register finalization function *) let lo=i*chunksize in let hi=if i= !ncores - 1 then ln-1 else (i+1)*chunksize-1 in let exc_handler e j = (* handle an exception at index j *) Utils.log_error "error at index j=%d in (%d,%d), chunksize=%d of a total of \ %d got exception %s on core %d \n%!" j lo hi chunksize (hi-lo+1) (Printexc.to_string e) i; exit 1 in compute al lo hi exc_handler); (* return with no value *) (* a more sophisticated mapper function, with automatic load balancing *) (* the type of messages exchanged between master and workers *) type msg_to_master = Ready of int | Error of int * string type msg_to_worker = Finished | Task of int let setup_children_chans oc pipedown ?fdarr i = Setcore.setcore i; (* close the other ends of the pipe and convert my ends to ic/oc *) Unix.close (snd pipedown.(i)); let pid = Unix.getpid() in let ic = Unix.in_channel_of_descr (fst pipedown.(i)) in let receive () = Marshal.from_channel ic in let signal v = Marshal.to_channel oc v []; flush oc in let return v = let d = Unix.gettimeofday() in let _ = match fdarr with Some fdarr -> marshal fdarr.(i) v | None -> () in log_debug "worker elapsed %f in marshalling" (Unix.gettimeofday() -. d) in let finish () = (log_debug "shutting down (pid=%d)\n%!" pid; try close_in ic; close_out oc with _ -> () ); exit 0 in receive, signal, return, finish, pid (* parametric mapper primitive that captures the parallel structure *) let mapper (init:int -> unit) (finalize:unit -> unit) ncores' ~chunksize compute opid al collect = let ln = Array.length al in if ln=0 then (collect []) else begin set_ncores (min ln (max 1 ncores')); log_debug "mapper on %d elements, on %d cores%!" ln !ncores; match chunksize with None -> (* no need of load balancing *) simplemapper init finalize !ncores compute opid al collect | Some v when !ncores >= ln/v -> (* no need of load balancing if more cores than tasks *) simplemapper init finalize !ncores compute opid al collect | Some v -> (* init task parameters : ntasks > 0 here, as otherwise ncores >= 1 >= ln/v = ntasks and we would take the branch above *) let chunksize = v and ntasks = ln/v in (* flush everything *) flush_all (); (* create descriptors to mmap *) let fdarr=Array.init !ncores (fun _ -> Utils.tempfd()) in (* setup communication channel with the workers *) let pipedown=Array.init !ncores (fun _ -> Unix.pipe ()) in let pipeup_rd,pipeup_wr=Unix.pipe () in let oc_up = Unix.out_channel_of_descr pipeup_wr in (* run children *) let pids = spawn_many !ncores ~in_subprocess:(fun i -> init i; (* call initialization function *) Pervasives.at_exit finalize; (* register finalization function *) let d=Unix.gettimeofday() in (* primitives for communication *) Unix.close pipeup_rd; let receive,signal,return,finish,pid = setup_children_chans oc_up pipedown ~fdarr i in let reschunk=ref opid in let computetask n = (* compute chunk number n *) let lo=n*chunksize in let hi=if n=ntasks-1 then ln-1 else (n+1)*chunksize-1 in let exc_handler e j = (* handle an exception at index j *) begin let errmsg = Printexc.to_string e in Utils.log_error "error at index j=%d in (%d,%d), chunksize=%d of a \ total of %d got exception %s on core %d \n%!" j lo hi chunksize (hi-lo+1) errmsg i; signal (Error (i,errmsg): msg_to_master); finish() end in reschunk:= compute al lo hi !reschunk exc_handler; log_debug "worker on core %d (pid=%d), segment (%d,%d) of data of \ length %d, chunksize=%d finished in %f seconds" i pid lo hi ln chunksize (Unix.gettimeofday() -. d) in while true do (* ask for work until we are finished *) signal (Ready i); match receive() with | Finished -> return (!reschunk:'d); finish () | Task n -> computetask n done) in (* close unused ends of the pipes *) Array.iter (fun (rfd,_) -> Unix.close rfd) pipedown; Unix.close pipeup_wr; (* get ic/oc/wfdl *) let ocs= Array.init !ncores (fun n -> Unix.out_channel_of_descr (snd pipedown.(n))) in let ic=Unix.in_channel_of_descr pipeup_rd in (* feed workers until all tasks are finished *) for i=0 to ntasks-1 do match Marshal.from_channel ic with Ready w -> (log_debug "sending task %d to worker %d" i w; let oc = ocs.(w) in (Marshal.to_channel oc (Task i) []); flush oc) | (Error (core,msg): msg_to_master) -> handle_exc core msg done; (* send termination token to all children *) Array.iter (fun oc -> Marshal.to_channel oc Finished []; flush oc; close_out oc ) ocs; (* wait for all children to terminate *) wait_for_pids pids; (* read in all data *) let res = ref [] in (* iterate in reverse order, to accumulate in the right order *) for i = 0 to !ncores-1 do res:= ((unmarshal fdarr.((!ncores-1)-i)):'d)::!res; done; (* collect all results *) collect !res end (* parametric iteration primitive that captures the parallel structure *) let geniter init finalize ncores' ~chunksize compute al = let ln = Array.length al in if ln=0 then () else begin set_ncores (min ln (max 1 ncores')); log_debug "geniter on %d elements, on %d cores%!" ln !ncores; match chunksize with None -> simpleiter init finalize !ncores compute al (* no need of load balancing *) | Some v when !ncores >= ln/v -> simpleiter init finalize !ncores compute al (* no need of load balancing *) | Some v -> (* init task parameters *) let chunksize = v and ntasks = ln/v in (* flush everything *) flush_all (); (* setup communication channel with the workers *) let pipedown=Array.init !ncores (fun _ -> Unix.pipe ()) in let pipeup_rd,pipeup_wr=Unix.pipe () in let oc_up = Unix.out_channel_of_descr pipeup_wr in (* spawn children *) let pids = spawn_many !ncores ~in_subprocess:(fun i -> init i; (* call initialization function *) Pervasives.at_exit finalize; (* register finalization function *) let d=Unix.gettimeofday() in (* primitives for communication *) Unix.close pipeup_rd; let receive,signal,return,finish,pid = setup_children_chans oc_up pipedown i in let computetask n = (* compute chunk number n *) let lo=n*chunksize in let hi=if n=ntasks-1 then ln-1 else (n+1)*chunksize-1 in let exc_handler e j = (* handle an exception at index j *) begin let errmsg = Printexc.to_string e in Utils.log_error "error at index j=%d in (%d,%d), chunksize=%d of \ a total of %d got exception %s on core %d \n%!" j lo hi chunksize (hi-lo+1) errmsg i; signal (Error (i,errmsg): msg_to_master); finish() end in compute al lo hi exc_handler; log_debug "worker on core %d (pid=%d), segment (%d,%d) of data \ of length %d, chunksize=%d finished in %f seconds" i pid lo hi ln chunksize (Unix.gettimeofday() -. d) in while true do (* ask for work until we are finished *) signal (Ready i); match receive() with | Finished -> return(); finish () | Task n -> computetask n done) in (* close unused ends of the pipes *) Array.iter (fun (rfd,_) -> Unix.close rfd) pipedown; Unix.close pipeup_wr; (* get ic/oc/wfdl *) let ocs=Array.init !ncores (fun n -> Unix.out_channel_of_descr (snd pipedown.(n))) in let ic=Unix.in_channel_of_descr pipeup_rd in (* feed workers until all tasks are finished *) for i=0 to ntasks-1 do match Marshal.from_channel ic with Ready w -> (log_debug "sending task %d to worker %d" i w; let oc = ocs.(w) in (Marshal.to_channel oc (Task i) []); flush oc) | (Error (core,msg): msg_to_master) -> handle_exc core msg done; (* send termination token to all children *) Array.iter (fun oc -> Marshal.to_channel oc Finished []; flush oc; close_out oc ) ocs; (* wait for all children to terminate *) wait_for_pids pids; (* no data to return *) end (* the parallel mapfold function *) let parmapifold ?(init = fun _ -> ()) ?(finalize = fun () -> ()) ?(ncores= !default_ncores) ?(chunksize) (f:int -> 'a -> 'b) (s:'a sequence) (op:'b->'c->'c) (opid:'c) (concat:'c->'c->'c) : 'c= (* enforce array to speed up access to the list elements *) let al = match s with A al -> al | L l -> Array.of_list l in let compute al lo hi previous exc_handler = (* iterate in reverse order, to accumulate in the right order *) let r = ref previous in for j=0 to (hi-lo) do try let idx = hi-j in r := op (f idx (Array.unsafe_get al idx)) !r; with e -> exc_handler e j done; !r in mapper init finalize ncores ~chunksize compute opid al (fun r -> Utils.fold_right concat r opid) let parmapfold ?(init = fun _ -> ()) ?(finalize = fun () -> ()) ?ncores ?(chunksize) (f:'a -> 'b) (s:'a sequence) (op:'b->'c->'c) (opid:'c) (concat:'c->'c->'c) : 'c= parmapifold ~init ~finalize ?ncores ?chunksize (fun _ x -> f x) s op opid concat (* the parallel map function *) let parmapi ?(init = fun _ -> ()) ?(finalize = fun () -> ()) ?(ncores= !default_ncores) ?chunksize (f:int ->'a -> 'b) (s:'a sequence) : 'b list= (* enforce array to speed up access to the list elements *) let al = match s with A al -> al | L l -> Array.of_list l in let compute al lo hi previous exc_handler = (* iterate in reverse order, to accumulate in the right order, and add to acc *) let f' j = try let idx = lo+j in f idx (Array.unsafe_get al idx) with e -> exc_handler e j in let rec aux acc = function 0 -> (f' 0)::acc | n -> aux ((f' n)::acc) (n-1) in aux previous (hi-lo) in mapper init finalize ncores ~chunksize compute [] al (fun r -> Utils.concat_tr r) let parmap ?init ?finalize ?ncores ?chunksize (f:'a -> 'b) (s:'a sequence) : 'b list= parmapi ?init ?finalize ?ncores ?chunksize (fun _ x -> f x) s (* the parallel fold function *) let parfold ?(init = fun _ -> ()) ?(finalize = fun () -> ()) ?(ncores= !default_ncores) ?chunksize (op:'a -> 'b -> 'b) (s:'a sequence) (opid:'b) (concat:'b->'b->'b) : 'b= parmapfold ~init ~finalize ~ncores ?chunksize (fun x -> x) s op opid concat (* the parallel map function, on arrays *) let mapi_range lo hi (f:int -> 'a -> 'b) a = let l = hi-lo in if l < 0 then [||] else begin let r = Array.create (l+1) (f 0 (Array.unsafe_get a lo)) in for i = 1 to l do let idx = lo+i in Array.unsafe_set r i (f idx (Array.unsafe_get a idx)) done; r end let array_parmapi ?(init = fun _ -> ()) ?(finalize = fun () -> ()) ?(ncores= !default_ncores) ?chunksize (f:int -> 'a -> 'b) (al:'a array) : 'b array= let compute a lo hi previous exc_handler = try Array.concat [(mapi_range lo hi f a);previous] with e -> exc_handler e lo in mapper init finalize ncores ~chunksize compute [||] al (fun r -> Array.concat r) let array_parmap ?init ?finalize ?ncores ?chunksize (f:'a -> 'b) (al:'a array) : 'b array= array_parmapi ?init ?finalize ?ncores ?chunksize (fun _ x -> f x) al (* This code is highly optimised for operations on float arrays: - knowing in advance the size of the result allows to pre-allocate it in a shared memory space as a Bigarray; - to write in the Bigarray memory area using the unsafe functions for Arrays, we trick the OCaml compiler into using the Bigarray memory as an Array as follows Array.unsafe_get (Obj.magic arr_out) 1 This works because OCaml compiles access to float arrays as unboxed data, without further integrity checks; - the final copy into a real OCaml array is done via a memcpy in C. This approach gives a performance which is 2 to 3 times higher w.r.t. array_parmap, at the price of using Obj.magic and knowledge on the internal representation of arrays and bigarrays. *) exception WrongArraySize type buf= (float, Bigarray.float64_elt, Bigarray.c_layout) Bigarray.Array1.t * int;; (* should be a long int some day *) let init_shared_buffer a = let size = Array.length a in let fd = Utils.tempfd() in let arr = Bigarray.Array1.map_file fd Bigarray.float64 Bigarray.c_layout true size in (* The mmap() function shall add an extra reference to the file associated with the file descriptor fildes which is not removed by a subsequent close() on that file descriptor. http://pubs.opengroup.org/onlinepubs/009695399/functions/mmap.html *) Unix.close fd; (arr,size) let array_float_parmapi ?(init = fun _ -> ()) ?(finalize = fun () -> ()) ?(ncores= !default_ncores) ?chunksize ?result ?sharedbuffer (f:int -> 'a -> float) (al:'a array) : float array = let size = Array.length al in if size=0 then [| |] else begin let barr_out = match sharedbuffer with Some (arr,s) -> if s fst (init_shared_buffer al) in (* trick the compiler into accessing the Bigarray memory area as a float array: the data in Bigarray is placed at offset 1 w.r.t. a normal array, so we get a pointer to that zone into arr_out_as_array, and have it typed as a float array *) let barr_out_as_array = Array.unsafe_get (Obj.magic barr_out) 1 in let compute _ lo hi _ exc_handler = try for i=lo to hi do Array.unsafe_set barr_out_as_array i (f i (Array.unsafe_get al i)) done with e -> exc_handler e lo in mapper init finalize ncores ~chunksize compute () al (fun _r -> ()); let res = match result with None -> Bytearray.to_floatarray barr_out size | Some a -> if Array.length a < size then (Utils.log_error "result array is too small to hold the result in \ array_float_parmap"; raise WrongArraySize) else Bytearray.to_this_floatarray a barr_out size in res end let array_float_parmap ?(init = fun _ -> ()) ?(finalize = fun () -> ()) ?ncores ?chunksize ?result ?sharedbuffer (f:'a -> float) (al:'a array) : float array = array_float_parmapi ~init ~finalize ?ncores ?chunksize ?result ?sharedbuffer (fun _ x -> f x) al (* the parallel iteration function *) let pariteri ?(init = fun _ -> ()) ?(finalize = fun () -> ()) ?(ncores= !default_ncores) ?chunksize (f:int -> 'a -> unit) (s:'a sequence) : unit= (* enforce array to speed up access to the list elements *) let al = match s with A al -> al | L l -> Array.of_list l in let compute al lo hi exc_handler = (* iterate on the given segment *) let f' j = try let idx = lo+j in f idx (Array.unsafe_get al idx) with e -> exc_handler e j in for i = 0 to hi-lo do f' i done in geniter init finalize ncores ~chunksize compute al let pariter ?init ?finalize ?ncores ?chunksize (f:'a -> unit) (s:'a sequence) : unit= pariteri ?init ?finalize ?ncores ?chunksize (fun _ x -> f x) s parmap-1.0-rc8/parmap.mldylib000066400000000000000000000000461305367720600161730ustar00rootroot00000000000000Parmap Bytearray Parmap_utils Setcore parmap-1.0-rc8/parmap.mli000066400000000000000000000250271305367720600153260ustar00rootroot00000000000000(**************************************************************************) (* ParMap: a simple library to perform Map computations on a multi-core *) (* *) (* Author(s): Marco Danelutto, Roberto Di Cosmo *) (* *) (* This library is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU Lesser General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. A special linking *) (* exception to the GNU Lesser General Public License applies to this *) (* library, see the LICENSE file for more information. *) (**************************************************************************) (** Module [Parmap]: efficient parallel map, fold and mapfold on lists and arrays on multicores. All the primitives allow to control the granularity of the parallelism via an optional parameter [chunksize]: if [chunksize] is omitted, the input sequence is split evenly among the available cores; if [chunksize] is specified, the input data is split in chunks of size [chunksize] and dispatched to the available cores using an on demand strategy that ensures automatic load balancing. A specific primitive [array_float_parmap] is provided for fast operations on float arrays. *) (** {6 Setting and getting the default value for ncores } *) val set_default_ncores : int -> unit val get_default_ncores : unit -> int (** {6 Getting ncores being used during parallel execution } *) val get_ncores : unit -> int (** {6 Getting the current worker rank. The master process has rank -1. Other processes have the rank at which they were forked out (a worker's rank is in [0..ncores-1]) } *) val get_rank : unit -> int (** {6 Sequence type, subsuming lists and arrays} *) type 'a sequence = L of 'a list | A of 'a array;; (** The [parmapfold], [parfold] and [parmap] generic functions, for efficiency reasons, convert the input data into an array internally, so we provide the ['a sequence] type to allow passing an array directly as input. If you want to perform a parallel map operation on an array, use [array_parmap] or [array_float_parmap] instead. *) (** {6 Optional init and finalize functions} *) (** The optional [init] (resp. [finalize]) function is called once by each child process just after creation (resp. just before exit). [init] and [finalize] both default to doing nothing. [init i] takes the child rank [i] as parameter (first forked child has rank 0, next 1, etc.). *) (** {6 Parallel mapfold} *) val parmapfold : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> ('a -> 'b) -> 'a sequence -> ('b-> 'c -> 'c) -> 'c -> ('c->'c->'c) -> 'c (** [parmapfold ~ncores:n f (L l) op b concat ] computes [List.fold_right op (List.map f l) b] by forking [n] processes on a multicore machine. You need to provide the extra [concat] operator to combine the partial results of the fold computed on each core. If 'b = 'c, then [concat] may be simply [op]. The order of computation in parallel changes w.r.t. sequential execution, so this function is only correct if [op] and [concat] are associative and commutative. If the optional [chunksize] parameter is specified, the processes compute the result in an on-demand fashion on blocks of size [chunksize]. [parmapfold ~ncores:n f (A a) op b concat ] computes [Array.fold_right op (Array.map f a) b] *) (** {6 Parallel fold} *) val parfold: ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> ('a -> 'b -> 'b) -> 'a sequence -> 'b -> ('b->'b->'b) -> 'b (** [parfold ~ncores:n op (L l) b concat] computes [List.fold_right op l b] by forking [n] processes on a multicore machine. You need to provide the extra [concat] operator to combine the partial results of the fold computed on each core. If 'b = 'c, then [concat] may be simply [op]. The order of computation in parallel changes w.r.t. sequential execution, so this function is only correct if [op] and [concat] are associative and commutative. If the optional [chunksize] parameter is specified, the processes compute the result in an on-demand fashion on blocks of size [chunksize]. [parfold ~ncores:n op (A a) b concat] similarly computes [Array.fold_right op a b]. *) (** {6 Parallel map} *) val parmap : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> ('a -> 'b) -> 'a sequence -> 'b list (** [parmap ~ncores:n f (L l) ] computes [List.map f l] by forking [n] processes on a multicore machine. [parmap ~ncores:n f (A a) ] computes [Array.map f a] by forking [n] processes on a multicore machine. If the optional [chunksize] parameter is specified, the processes compute the result in an on-demand fashion on blocks of size [chunksize]; this provides automatic load balancing for unbalanced computations, but the order of the result is no longer guaranteed to be preserved. *) (** {6 Parallel iteration} *) val pariter : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> ('a -> unit) -> 'a sequence -> unit (** [pariter ~ncores:n f (L l) ] computes [List.iter f l] by forking [n] processes on a multicore machine. [parmap ~ncores:n f (A a) ] computes [Array.iter f a] by forking [n] processes on a multicore machine. If the optional [chunksize] parameter is specified, the processes perform the computation in an on-demand fashion on blocks of size [chunksize]; this provides automatic load balancing for unbalanced computations. *) (** {6 Parallel mapfold, indexed} *) val parmapifold : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> (int -> 'a -> 'b) -> 'a sequence -> ('b-> 'c -> 'c) -> 'c -> ('c->'c->'c) -> 'c (** Like parmapfold, but the map function gets as an extra argument the index of the mapped element *) (** {6 Parallel map, indexed} *) val parmapi : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> (int -> 'a -> 'b) -> 'a sequence -> 'b list (** Like parmap, but the map function gets as an extra argument the index of the mapped element *) (** {6 Parallel iteration, indexed} *) val pariteri : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> (int -> 'a -> unit) -> 'a sequence -> unit (** Like pariter, but the iterated function gets as an extra argument the index of the sequence element *) (** {6 Parallel map on arrays} *) val array_parmap : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> ('a -> 'b) -> 'a array -> 'b array (** [array_parmap ~ncores:n f a ] computes [Array.map f a] by forking [n] processes on a multicore machine. If the optional [chunksize] parameter is specified, the processes compute the result in an on-demand fashion on blochs of size [chunksize]; this provides automatic load balancing for unbalanced computations, but the order of the result is no longer guaranteed to be preserved. *) (** {6 Parallel map on arrays, indexed} *) val array_parmapi : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> (int -> 'a -> 'b) -> 'a array -> 'b array (** Like array_parmap, but the map function gets as an extra argument the index of the mapped element *) (** {6 Parallel map on float arrays } *) exception WrongArraySize type buf val init_shared_buffer : float array -> buf (** [init_shared_buffer a] creates a new memory mapped shared buffer big enough to hold a float array of the size of [a]. This buffer can be reused in a series of calls to [array_float_parmap], avoiding the cost of reallocating it each time. *) val array_float_parmap : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> ?result: float array -> ?sharedbuffer: buf -> ('a -> float) -> 'a array -> float array (** [array_float_parmap ~ncores:n f a ] computes [Array.map f a] by forking [n] processes on a multicore machine, and preallocating the resulting array as shared memory, which allows significantly more efficient computation than calling the generic array_parmap function. If the optional [chunksize] parameter is specified, the processes compute the result in an on-demand fashion on blochs of size [chunksize]; this provides automatic load balancing for unbalanced computations, *and* the order of the result is still guaranteed to be preserved. In case you already have at hand an array where to store the result, you can squeeze out some more cpu cycles by passing it as optional parameter [result]: this will avoid the creation of a result array, which can be costly for very large data sets. Raises [WrongArraySize] if [result] is too small to hold the data. It is possible to share the same preallocated shared memory space across calls, by initialising the space calling [init_shared_buffer a] and passing the result as the optional [sharedbuffer] parameter to each subsequent call to [array_float_parmap]. Raises WrongArraySize if [sharedbuffer] is too small to hold the input data. *) (** {6 Parallel map on float arrays, indexed } *) val array_float_parmapi : ?init:(int -> unit) -> ?finalize:(unit -> unit) -> ?ncores:int -> ?chunksize:int -> ?result: float array -> ?sharedbuffer: buf -> (int -> 'a -> float) -> 'a array -> float array (** Like array_float_parmap, but the map function gets as an extra argument the index of the mapped element *) (** {6 Debugging} *) val debugging : bool -> unit (** Enable or disable debugging code in the library; default: false *) (** {6 Helper function for redirection of stdout and stderr} *) val redirect : ?path:string -> id:int -> unit (** Helper function that redirects stdout and stderr to files located in the directory [path], carrying names of the shape stdout.NNN and stderr.NNN where NNN is the [id] of the used core. Useful when writing initialisation functions to be passed as [init] argument to the parallel combinators. The default value for [path] is /tmp/.parmap.PPPP with PPPP the process id of the main program. *) parmap-1.0-rc8/parmap.mllib000066400000000000000000000000461305367720600156360ustar00rootroot00000000000000Parmap Bytearray Parmap_utils Setcore parmap-1.0-rc8/parmap.odocl000066400000000000000000000000071305367720600156340ustar00rootroot00000000000000Parmap parmap-1.0-rc8/parmap_utils.ml000066400000000000000000000025351305367720600163740ustar00rootroot00000000000000 let log_error fmt = Printf.kprintf (fun s -> Format.eprintf "[Parmap]: %s@.%!" s) fmt (* tail recursive version of List.append *) let append_tr l1 l2 = let rec aux acc = function [] -> acc | a::r -> aux (a::acc) r in aux l2 (List.rev l1) (* tail recursive version of List.concat *) let concat_tr (l: 'a list) = List.fold_left (fun acc l -> append_tr l acc) [] (List.rev l) (* tail recursive version of List.fold_right from ExtLib *) let fold_right f l init = let fold_right_max = 1000 in let rec tail_loop acc = function | [] -> acc | h :: t -> tail_loop (f h acc) t in let rec loop n = function | [] -> init | h :: t -> if n < fold_right_max then f h (loop (n+1) t) else f h (tail_loop init (List.rev t)) in loop 0 l (* would be [? a | a <- startv--endv] using list comprehension from Batteries *) let range startv endv = let s,e = (min startv endv),(max startv endv) in let rec aux acc = function n -> if n=s then n::acc else aux (n::acc) (n-1) in aux [] e (* create a shadow file descriptor *) let tempfd () = let name = Filename.temp_file "mmap" "TMP" in try let fd = Unix.openfile name [Unix.O_RDWR; Unix.O_CREAT] 0o600 in Unix.unlink name; fd with e -> Unix.unlink name; raise e parmap-1.0-rc8/parmap_utils.mli000066400000000000000000000004161305367720600165410ustar00rootroot00000000000000val log_error : ('a, unit, string, unit) format4 -> 'a val append_tr : 'a list -> 'a list -> 'a list val concat_tr : 'a list list -> 'a list val fold_right : ('a -> 'b -> 'b) -> 'a list -> 'b -> 'b val range : int -> int -> int list val tempfd : unit -> Unix.file_descr parmap-1.0-rc8/setcore.ml000066400000000000000000000003171305367720600153340ustar00rootroot00000000000000(* uses the native affinity interface to declare that the current process should be attached to core number n *) external numcores: unit -> int = "numcores" external setcore: int -> unit = "setcore" parmap-1.0-rc8/setcore_stubs.c000066400000000000000000000032751305367720600163740ustar00rootroot00000000000000#include "config.h" #include #include #if HAVE_MACH_THREAD_POLICY_H #include #include // #include #endif #if HAVE_DECL_SCHED_SETAFFINITY //#define _GNU_SOURCE /* See feature_test_macros(7) */ #include #endif #include #include CAMLprim value numcores(value unit) { int numcores = sysconf( _SC_NPROCESSORS_ONLN ); return Val_int(numcores); } CAMLprim value setcore(value which) { int numcores = sysconf( _SC_NPROCESSORS_ONLN ); int w = Int_val(which) % numcores; // stay in the space of existing cores #if HAVE_DECL_SCHED_SETAFFINITY cpu_set_t cpus; #endif #if HAVE_MACH_THREAD_POLICY_H thread_affinity_policy_data_t affinityData; #endif int retcode; int finished=0; while (finished==0) { #if HAVE_DECL_SCHED_SETAFFINITY CPU_ZERO(&cpus); CPU_SET (w,&cpus); //fprintf(stderr,"Trying to pin to cpu %d out of %d reported by the system\n",w,numcores); retcode = sched_setaffinity(getpid(), sizeof(cpu_set_t), &cpus); if(retcode != 0) { fprintf(stderr,"Failed pinning to cpu %d, trying %d/2\n",w, w); w=w/2; } else #endif #if HAVE_MACH_THREAD_POLICY_H affinityData.affinity_tag = w; retcode = thread_policy_set(mach_thread_self(), THREAD_AFFINITY_POLICY, &affinityData, THREAD_AFFINITY_POLICY_COUNT); if(retcode) { fprintf(stderr,"MAC OS X: Failed pinning to cpu %d, trying %d/2\n",w, w); w=w/2; } else #endif { //fprintf(stderr,"Succeeded pinning to cpu %d\n",w); finished=1; } } return Val_unit; } parmap-1.0-rc8/tests/000077500000000000000000000000001305367720600144775ustar00rootroot00000000000000parmap-1.0-rc8/tests/LICENCE000066400000000000000000000432541305367720600154740ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 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It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. parmap-1.0-rc8/tests/_tags000066400000000000000000000000711305367720600155150ustar00rootroot00000000000000<*>: package(unix), package(bigarray), package(parmap) parmap-1.0-rc8/tests/floatscale.ml000066400000000000000000000042131305367720600171460ustar00rootroot00000000000000(**************************************************************************) (* Sample use of Parmap, a simple library to perform Map computations on *) (* a multi-core *) (* *) (* Author(s): Roberto Di Cosmo *) (* *) (* This program is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. *) (**************************************************************************) open Parmap open Utils (* from Paul Vernaza's code *) let env_param of_string name default = try of_string (Unix.getenv name) with Not_found -> default let env_num = env_param float_of_string let env_float = env_num let env_int = env_param int_of_string let env_bool = env_param bool_of_string let env_string = env_param (fun x -> x) let nIters = env_int "nIters" 1 let nData = env_int "nData" 10000000 let nProcs = env_int "nProcs" 8 let inOrder = env_bool "inOrder" false let chunksize = env_int "chunksize" (nData/nProcs) let xs, func = let xs = Array.make nData 0. in let pi = 4. *. atan 1. in for i = 0 to nData - 1 do xs.(i) <- pi *. (float_of_int i /. (float_of_int nData)) done; xs, (fun x -> cos (sqrt x)) let checksum_array arr () = Array.fold_left (fun acc el -> acc +. el) 0. arr;; let checksum_list list () = List.fold_left (fun acc el -> acc +. el) 0. list;; Printf.printf "Test: normal parmap\n%!";; scale_test ~chunksize:chunksize ~inorder:inOrder func (A xs) nIters nProcs nProcs;; Printf.printf "Test: specialised array parmap\n%!";; array_scale_test ~chunksize:chunksize ~inorder:inOrder func xs nIters nProcs nProcs;; Printf.printf "Test: specialised float array parmap\n%!";; array_float_scale_test ~chunksize:chunksize ~inorder:inOrder func xs nIters nProcs nProcs;; parmap-1.0-rc8/tests/simplescale.ml000066400000000000000000000071751305367720600173440ustar00rootroot00000000000000(**************************************************************************) (* Sample use of Parmap, a simple library to perform Map computations on *) (* a multi-core *) (* *) (* Author(s): Roberto Di Cosmo *) (* *) (* This program is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. *) (**************************************************************************) open Parmap open Utils let initsegm n = let rec aux acc = function 0 -> acc | n -> aux (n::acc) (n-1) in aux [] n ;; let compute p = let r=ref 1 in for i = 1 to 80000 do r:= !r+(p*p)-(p*(p-1)) done; !r ;; let fcompute p = let r=ref 1. in for i = 1 to 80000 do r:= !r+.(p*.p)-.(p*.(p-.1.)) done; !r ;; Printf.printf "*** Checking corner cases: call on empty lists and arrays must not raise an exception\n%!"; Printf.printf "* parmap []\n%!"; parmap (fun x -> x) (L []);; Printf.printf "* parmap [| |]\n%!"; parmap (fun x -> x) (A [| |]);; Printf.printf "* pariter []\n%!"; pariter (fun x -> ()) (L []);; Printf.printf "* pariter [| |]\n%!"; pariter (fun x -> ()) (A [| |]);; Printf.printf "*** Checking the code for non tail recursive calls: an exception here indicates there are some left\n%!"; scale_test (fun x -> x) (L (initsegm 10000000)) 1 2 2;; Printf.printf "*** Checking that we properly parallelise execution if we have less tasks than cores: if you do not see 5 processes, there is a problem\n%!"; debugging true;; (* scale_test (fun x -> x) (L (initsegm 5)) 1 8 8;; *) Printf.printf "* Simplemapper 8 cores, 5 elements\n%!"; ignore(parmap ~ncores:8 (fun x -> x) (L (initsegm 5)));; Printf.printf "* Simpleiter 8 cores, 5 elements\n%!"; ignore(pariter ~ncores:8 (fun x -> ()) (L (initsegm 5)));; Printf.printf "*** Checking that we properly handle bogus core numbers\n%!"; Printf.printf "* Simplemapper 0 cores\n%!"; ignore(parmap ~ncores:0 (fun x -> x) (L (initsegm 5)));; Printf.printf "* Simpleiter 0 cores\n%!"; ignore(pariter ~ncores:0 (fun x -> ()) (L (initsegm 5)));; debugging false;; Printf.printf "*** Computations on integer lists\n%!"; scale_test compute (L (initsegm 20000)) 2 1 10;; Printf.printf "*** Computations on integer lists (chunksize=100)\n%!"; scale_test ~chunksize:100 ~inorder:false compute (L (initsegm 20000)) 2 1 10;; Printf.printf "*** Computations on integer arrays\n%!"; scale_test compute (A (Array.init 20000 (fun n -> n+1))) 2 1 10;; Printf.printf "*** Computations on integer arrays (chunksize-100)\n%!"; scale_test ~chunksize:100 ~inorder:false compute (A (Array.init 20000 (fun n -> n+1))) 2 1 10;; Printf.printf "*** Computations on lists of floats\n%!"; scale_test fcompute (L (List.map float_of_int (initsegm 20000))) 2 1 10;; Printf.printf "*** Computations on lists of floats (chunksize=100)\n%!"; scale_test ~chunksize:100 ~inorder:false fcompute (L (List.map float_of_int (initsegm 20000))) 2 1 10;; Printf.printf "*** Computations on arrays of floats\n%!"; scale_test fcompute (A (Array.init 20000 (fun n -> float_of_int (n+1)))) 2 1 10;; Printf.printf "*** Computations on arrays of floats (chunksize=100)\n%!"; scale_test ~chunksize:100 ~inorder:false fcompute (A (Array.init 20000 (fun n -> float_of_int (n+1)))) 2 1 10;; parmap-1.0-rc8/tests/simplescale_array.ml000066400000000000000000000026101305367720600205270ustar00rootroot00000000000000(**************************************************************************) (* Sample use of Parmap, a simple library to perform Map computations on *) (* a multi-core *) (* *) (* Author(s): Roberto Di Cosmo *) (* *) (* This program is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. *) (**************************************************************************) open Parmap open Utils let compute p = let r=ref 1 in for i = 1 to 80000 do r:= !r+(p*p)-(p*(p-1)) done; !r ;; let fcompute p = let r=ref 1. in for i = 1 to 80000 do r:= !r+.(p*.p)-.(p*.(p-.1.)) done; !r ;; array_scale_test fcompute (Array.init 20000 (fun i -> float_of_int i)) 2 1 10;; array_float_scale_test fcompute (Array.init 20000 (fun i -> float_of_int i)) 2 1 10;; scale_test ~chunksize:100 ~inorder:false compute (A (Array.init 20000 (fun i -> i))) 2 1 10;; scale_test compute (A (Array.init 20000 (fun i -> i))) 2 1 10;; parmap-1.0-rc8/tests/simplescalefold.ml000066400000000000000000000036521305367720600202050ustar00rootroot00000000000000(**************************************************************************) (* Sample use of Parmap, a simple library to perform Map computations on *) (* a multi-core *) (* *) (* Author(s): Roberto Di Cosmo *) (* *) (* This program is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. *) (**************************************************************************) open Parmap let initsegm n = let rec aux acc = function 0 -> acc | n -> aux (n::acc) (n-1) in aux [] n ;; let scale_test iter nprocmin nprocmax = Printf.eprintf "Testing scalability with %d iterations on %d*2 to %d*2 cores\n" iter nprocmin nprocmax; Printf.eprintf "The fold operation in this example is too simple to scale: this is just a test for the code.\n"; let l = initsegm 20000 in let cl,tseq = let d=Unix.gettimeofday() in let l' = List.fold_right (+) l 0 in l',(Unix.gettimeofday() -. d) in Printf.eprintf "Sequential execution takes %f seconds\n" tseq; for i = nprocmin to nprocmax do let tot=ref 0.0 in for j=1 to iter do let d=Unix.gettimeofday() in let cl'=parfold ~ncores:(i*2) (+) (L l) 0 (+) in tot:=!tot+.(Unix.gettimeofday()-.d); if cl<>cl' then Printf.eprintf "Parfold failure: result mismatch\n" done; let speedup=tseq /. (!tot /. (float iter)) in Printf.eprintf "Speedup with %d cores (average on %d iterations): %f (tseq=%f, tpar=%f)\n" (i*2) iter speedup tseq (!tot /. (float iter)) done ;; scale_test 2 1 10;; parmap-1.0-rc8/tests/simplescalemapfold.ml000066400000000000000000000037131305367720600207010ustar00rootroot00000000000000(**************************************************************************) (* Sample use of Parmap, a simple library to perform Map computations on *) (* a multi-core *) (* *) (* Author(s): Roberto Di Cosmo *) (* *) (* This program is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. *) (**************************************************************************) open Parmap let initsegm n = let rec aux acc = function 0 -> acc | n -> aux (n::acc) (n-1) in aux [] n ;; let compute p = let r=ref 1 in for i = 1 to 80000 do r:= !r+(p*p)-(p*(p-1)) done; !r ;; let scale_test iter nprocmin nprocmax = Printf.eprintf "Testing scalability with %d iterations on %d*2 to %d*2 cores\n" iter nprocmin nprocmax; let l = initsegm 20000 in let cl,tseq = let d=Unix.gettimeofday() in let l' = List.fold_right (+) (List.map compute l) 0 in l',(Unix.gettimeofday() -. d) in Printf.eprintf "Sequential execution takes %f seconds\n" tseq; for i = nprocmin to nprocmax do let tot=ref 0.0 in for j=1 to iter do let d=Unix.gettimeofday() in let cl'=parmapfold ~ncores:(i*2) ~chunksize:100 compute (L l) (+) 0 (+) in tot:=!tot+.(Unix.gettimeofday()-.d); if cl<>cl' then Printf.eprintf "Parmap failure: result mismatch\n" done; let speedup=tseq /. (!tot /. (float iter)) in Printf.eprintf "Speedup with %d cores (average on %d iterations): %f (tseq=%f, tpar=%f)\n" (i*2) iter speedup tseq (!tot /. (float iter)) done ;; scale_test 2 1 10;; parmap-1.0-rc8/tests/utils.ml000066400000000000000000000114211305367720600161700ustar00rootroot00000000000000(**************************************************************************) (* Generic testing framework for evaluating speedup on Parmap *) (* a multi-core *) (* *) (* Author(s): Roberto Di Cosmo *) (* *) (* This program is free software: you can redistribute it and/or modify *) (* it under the terms of the GNU General Public License as *) (* published by the Free Software Foundation, either version 2 of the *) (* License, or (at your option) any later version. *) (**************************************************************************) open Parmap let scale_test ?(init=(fun _ -> ())) ?(inorder=true) ?(step=1) ?chunksize compute sequence iter nprocmin nprocmax = Printf.eprintf "Testing scalability with %d iterations on %d to %d cores, step %d\n%!" iter nprocmin nprocmax step; let rseq,tseq = let d=Unix.gettimeofday() in match sequence with L l -> let l'=List.rev_map compute l in List.rev l',(Unix.gettimeofday() -. d) | A a -> let l'=Array.to_list(Array.map compute a) in l',(Unix.gettimeofday() -. d) in Printf.eprintf "Sequential execution takes %f seconds\n%!" tseq; for incr = 0 to (nprocmax-nprocmin)/step do let i = nprocmin + incr in let tot=ref 0.0 in for j=1 to iter do let d=Unix.gettimeofday() in let rpar=parmap ~init ~ncores:i ?chunksize compute sequence in tot:=!tot+.(Unix.gettimeofday()-.d); if rseq<>rpar then begin if (List.sort compare rseq) <> (List.sort compare rpar) then Printf.eprintf "Parmap failure: result mismatch!\n%!" else if inorder then Printf.eprintf "Parmap failure: result order was expected to be preserved, and is not.\n%!" else Printf.eprintf "Parmap warning: result order is not preserved (it was not expected to be).\n%!" end done; let speedup=tseq /. (!tot /. (float iter)) in Printf.eprintf "Speedup with %d cores (average on %d iterations): %f (tseq=%f, tpar=%f)\n%!" i iter speedup tseq (!tot /. (float iter)) done; rseq ;; let array_scale_test ?(init= (fun _ -> ())) ?(inorder=true) ?(step=1) ?chunksize compute a iter nprocmin nprocmax = Printf.eprintf "Testing scalability with %d iterations on %d to %d cores, step %d\n" iter nprocmin nprocmax step; let rseq,tseq = let d=Unix.gettimeofday() in let a'= Array.map compute a in a',(Unix.gettimeofday() -. d) in Printf.eprintf "Sequential execution takes %f seconds\n" tseq; for incr = 0 to (nprocmax-nprocmin)/step do let i = nprocmin + incr in let tot=ref 0.0 in for j=1 to iter do let d=Unix.gettimeofday() in let rpar=array_parmap ~init ~ncores:i compute a in tot:=!tot+.(Unix.gettimeofday()-.d); if rseq<>rpar then begin if (Array.sort compare rseq) <> (Array.sort compare rpar) then Printf.eprintf "Parmap failure: result mismatch!\n" else if inorder then Printf.eprintf "Parmap failure: result order was expected to be preserved, and is not.\n" else Printf.eprintf "Parmap warning: result order is not preserved (it was not expected to be).\n" end done; let speedup=tseq /. (!tot /. (float iter)) in Printf.eprintf "Speedup with %d cores (average on %d iterations): %f (tseq=%f, tpar=%f)\n%!" i iter speedup tseq (!tot /. (float iter)) done; rseq ;; let array_float_scale_test ?(init= (fun _ -> ())) ?(inorder=true) ?(step=1) ?chunksize compute a iter nprocmin nprocmax = Printf.eprintf "Testing scalability with %d iterations on %d to %d cores, step %d\n" iter nprocmin nprocmax step; let rseq,tseq = let d=Unix.gettimeofday() in let a'= Array.map compute a in a',(Unix.gettimeofday() -. d) in Printf.eprintf "Sequential execution takes %f seconds\n" tseq; for incr = 0 to (nprocmax-nprocmin)/step do let i = nprocmin + incr in let tot=ref 0.0 in for j=1 to iter do let d=Unix.gettimeofday() in let rpar=array_float_parmap ~init ~ncores:i compute a in tot:=!tot+.(Unix.gettimeofday()-.d); if rseq<>rpar then begin if (Array.sort compare rseq) <> (Array.sort compare rpar) then Printf.eprintf "Parmap failure: result mismatch!\n" else if inorder then Printf.eprintf "Parmap failure: result order was expected to be preserved, and is not.\n" else Printf.eprintf "Parmap warning: result order is not preserved (it was not expected to be).\n" end done; let speedup=tseq /. (!tot /. (float iter)) in Printf.eprintf "Speedup with %d cores (average on %d iterations): %f (tseq=%f, tpar=%f)\n%!" i iter speedup tseq (!tot /. (float iter)) done; rseq ;;