1 # This source code file is part of thread_mpi.
2 # Written by Sander Pronk, Erik Lindahl, and possibly others.
4 # Copyright (c) 2009, Sander Pronk, Erik Lindahl.
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions are met:
9 # 1) Redistributions of source code must retain the above copyright
10 # notice, this list of conditions and the following disclaimer.
11 # 2) Redistributions in binary form must reproduce the above copyright
12 # notice, this list of conditions and the following disclaimer in the
13 # documentation and/or other materials provided with the distribution.
14 # 3) Neither the name of the copyright holders nor the
15 # names of its contributors may be used to endorse or promote products
16 # derived from this software without specific prior written permission.
18 # THIS SOFTWARE IS PROVIDED BY US ''AS IS'' AND ANY
19 # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 # DISCLAIMED. IN NO EVENT SHALL WE BE LIABLE FOR ANY
22 # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 # If you want to redistribute modifications, please consider that
30 # scientific software is very special. Version control is crucial -
31 # bugs must be traceable. We will be happy to consider code for
32 # inclusion in the official distribution, but derived work should not
33 # be called official thread_mpi. Details are found in the README & COPYING
36 include(CheckIncludeFiles)
37 include(CheckFunctionExists)
38 include(CheckCSourceCompiles)
40 # sets TMPI_ATOMICS to 1 if atomic operations are found, 0 otherwise
41 MACRO(TMPI_TEST_ATOMICS)
42 if (NOT DEFINED TMPI_ATOMICS)
43 try_compile(TEST_ATOMICS "${CMAKE_BINARY_DIR}"
44 "${CMAKE_SOURCE_DIR}/cmake/TestAtomics.c"
45 COMPILE_DEFINITIONS "-I${CMAKE_SOURCE_DIR}/include" )
47 message(STATUS "Atomic operations found")
49 message(STATUS "Atomic operations not found")
51 set(TMPI_ATOMICS ${TEST_ATOMICS} CACHE INTERNAL "Whether atomic operations are found")
52 endif(NOT DEFINED TMPI_ATOMICS)
53 ENDMACRO(TMPI_TEST_ATOMICS VARIABLE)
58 if (CMAKE_USE_PTHREADS_INIT)
59 check_include_files(pthread.h HAVE_PTHREAD_H)
60 set(THREAD_PTHREADS 1)
61 set(THREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
62 elseif (CMAKE_USE_WIN32_THREADS_INIT)
66 message(FATAL_ERROR "Thread support required")
67 endif (CMAKE_USE_PTHREADS_INIT)
69 # Turns on thread_mpi.
71 # CXX: enable C++ library build.
73 # first check whether threads and atomics are available.
75 # check again, to allow the user to fix this.
76 unset(TMPI_ATOMICS CACHE)
78 endif(NOT TMPI_ATOMICS)
80 message(WARNING "Atomic operations not found for this CPU+compiler combination. Thread support will be unbearably slow: disable threads. Atomic operations should work on all but the most obscure CPU+compiler combinations; if your system is not obscure -- like, for example, x86 with gcc -- please contact the developers.")
81 endif(NOT TMPI_ATOMICS)
84 foreach (_option IN ITEMS ${ARGN})
85 if (_option STREQUAL "CXX")
87 #elseif (_option STREQUAL "NOMPI")
88 # set(TMPI_NO_MPI_LIB 1)
90 message(FATAL_ERROR "Unknown thread_mpi option '${_option}'")
94 #tmpi_test_atomics(TMPI_ATOMICS)
96 # the spin-waiting option
97 option(THREAD_MPI_WAIT_FOR_NO_ONE "Use busy waits without yielding to the OS scheduler. Turning this on might improve performance (very) slightly at the cost of very poor performance if the threads are competing for CPU time." OFF)
98 mark_as_advanced(THREAD_MPI_WAIT_FOR_NO_ONE)
99 if (THREAD_MPI_WAIT_FOR_NO_ONE)
100 set(TMPI_WAIT_FOR_NO_ONE 1)
101 else (THREAD_MPI_WAIT_FOR_NO_ONE)
102 set(TMPI_WAIT_FOR_NO_ONE 0)
103 endif (THREAD_MPI_WAIT_FOR_NO_ONE)
105 # the copy buffer option
106 option(THREAD_MPI_COPY_BUFFER "Use an intermediate copy buffer for small message sizes, to allow blocking sends to return quickly. Only useful in programs with relatively uncoupled threads (infrequent MPI communication)" OFF)
107 mark_as_advanced(THREAD_MPI_COPY_BUFFER)
108 if (THREAD_MPI_COPY_BUFFER)
109 set(TMPI_COPY_BUFFER 1)
110 else (THREAD_MPI_COPY_BUFFER)
111 set(TMPI_COPY_BUFFER 0)
112 endif (THREAD_MPI_COPY_BUFFER)
114 # the profiling option
115 option(THREAD_MPI_PROFILING "Turn on simple MPI profiling." OFF)
116 mark_as_advanced(THREAD_MPI_PROFILING)
117 if (THREAD_MPI_PROFILING)
119 else (THREAD_MPI_PROFILING)
121 endif (THREAD_MPI_PROFILING)
123 # tmpi warnings for testing
124 option(THREAD_MPI_WARNINGS "Turn thread_mpi warnings for testing." OFF)
125 mark_as_advanced(THREAD_MPI_WARNINGS)
126 if (THREAD_MPI_WARNINGS)
128 else (THREAD_MPI_WARNINGS)
130 endif (THREAD_MPI_WARNINGS)
132 include(CheckCSourceCompiles)
135 include(CheckFunctionExists)
137 set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
138 # check for sched_setaffinity
139 check_c_source_compiles(
145 int main(void) { cpu_set_t set;
148 pthread_setaffinity_np(pthread_self(), sizeof(set), &set);
153 if (PTHREAD_SETAFFINITY)
154 set(HAVE_PTHREAD_SETAFFINITY 1)
155 endif (PTHREAD_SETAFFINITY)
156 set(CMAKE_REQUIRED_LIBRARIES)
157 endif (THREAD_PTHREADS)
160 # this runs on POSIX systems
161 check_include_files(unistd.h HAVE_UNISTD_H)
162 check_include_files(sched.h HAVE_SCHED_H)
163 check_include_files(sys/time.h HAVE_SYS_TIME_H)
164 check_function_exists(sysconf HAVE_SYSCONF)
165 # this runs on windows
166 #check_include_files(windows.h HAVE_WINDOWS_H)
167 ENDMACRO(TMPI_ENABLE)
169 MACRO(TMPI_GET_SOURCE_LIST SRC_VARIABLE)
171 thread_mpi/errhandler.c
172 thread_mpi/tmpi_malloc.c
175 list(APPEND ${SRC_VARIABLE} thread_mpi/pthreads.c)
176 elseif (THREAD_WINDOWS)
177 list(APPEND ${SRC_VARIABLE} thread_mpi/winthreads.c)
178 endif (THREAD_PTHREADS)
180 list(APPEND ${SRC_VARIABLE} thread_mpi/system_error.cpp)
183 list(APPEND ${SRC_VARIABLE}
184 thread_mpi/alltoall.c thread_mpi/p2p_protocol.c
185 thread_mpi/barrier.c thread_mpi/p2p_send_recv.c
186 thread_mpi/bcast.c thread_mpi/p2p_wait.c
187 thread_mpi/collective.c thread_mpi/profile.c
188 thread_mpi/comm.c thread_mpi/reduce.c
189 thread_mpi/event.c thread_mpi/reduce_fast.c
190 thread_mpi/gather.c thread_mpi/scatter.c
191 thread_mpi/group.c thread_mpi/tmpi_init.c
192 thread_mpi/topology.c thread_mpi/list.c
193 thread_mpi/type.c thread_mpi/lock.c
194 thread_mpi/numa_malloc.c thread_mpi/once.c
197 ENDMACRO(TMPI_GET_SOURCE_LIST)