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, unset otherwise
42 # include directory for thread_mpi/atomic.h
43 MACRO(TMPI_TEST_ATOMICS INCDIR)
45 if (NOT DEFINED TMPI_ATOMICS)
46 try_compile(TEST_ATOMICS "${CMAKE_BINARY_DIR}"
47 "${CMAKE_SOURCE_DIR}/cmake/TestAtomics.c"
48 COMPILE_DEFINITIONS "-I${INCDIR} -DTMPI_ATOMICS")
50 message(STATUS "Atomic operations found")
51 # If the check fails, we want to be able to check again,
52 # in case the user has been able to fix this without
53 # needing to delete the cache. Thus we only cache
55 set(TMPI_ATOMICS ${TEST_ATOMICS} CACHE INTERNAL "Whether atomic operations are found")
56 set(TMPI_ATOMICS_INCDIR ${INCDIR} CACHE INTERNAL "Atomic operations check include dir")
58 message(STATUS "Atomic operations not found")
63 ENDMACRO(TMPI_TEST_ATOMICS VARIABLE)
65 try_compile(HAVE_PROCESSOR_NUMBER ${CMAKE_BINARY_DIR} "${CMAKE_SOURCE_DIR}/cmake/TestWinProcNum.c")
68 if (CMAKE_USE_WIN32_THREADS_INIT AND HAVE_PROCESSOR_NUMBER)
71 elseif (CMAKE_USE_PTHREADS_INIT)
72 check_include_files(pthread.h HAVE_PTHREAD_H)
73 set(THREAD_PTHREADS 1)
74 set(THREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
76 message(FATAL_ERROR "Thread support required")
79 # Turns on thread_mpi core threading functions.
80 MACRO(TMPI_ENABLE_CORE INCDIR)
81 TMPI_TEST_ATOMICS(${INCDIR})
84 include(CheckFunctionExists)
86 set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
87 # check for sched_setaffinity
88 check_c_source_compiles(
94 int main(void) { cpu_set_t set;
97 pthread_setaffinity_np(pthread_self(), sizeof(set), &set);
102 if (PTHREAD_SETAFFINITY)
103 set(HAVE_PTHREAD_SETAFFINITY 1)
105 set(CMAKE_REQUIRED_LIBRARIES)
109 # this runs on POSIX systems
110 check_include_files(unistd.h HAVE_UNISTD_H)
111 check_include_files(sched.h HAVE_SCHED_H)
112 check_include_files(sys/time.h HAVE_SYS_TIME_H)
113 check_function_exists(sysconf HAVE_SYSCONF)
114 # this runs on windows
115 #check_include_files(windows.h HAVE_WINDOWS_H)
116 ENDMACRO(TMPI_ENABLE_CORE)
118 # enable C++ library build.
119 MACRO(TMPI_ENABLE_CXX)
121 ENDMACRO(TMPI_ENABLE_CXX)
123 # Turns on thread_mpi MPI functions.
125 TMPI_TEST_ATOMICS(TMPI_ATOMICS_INCDIR)
126 if(NOT DEFINED TMPI_ATOMICS)
127 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.")
132 # the spin-waiting option
133 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)
134 mark_as_advanced(THREAD_MPI_WAIT_FOR_NO_ONE)
135 if (THREAD_MPI_WAIT_FOR_NO_ONE)
136 set(TMPI_WAIT_FOR_NO_ONE 1)
138 set(TMPI_WAIT_FOR_NO_ONE 0)
141 # the copy buffer option
142 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)
143 mark_as_advanced(THREAD_MPI_COPY_BUFFER)
144 if (THREAD_MPI_COPY_BUFFER)
145 set(TMPI_COPY_BUFFER 1)
147 set(TMPI_COPY_BUFFER 0)
150 # the profiling option
151 option(THREAD_MPI_PROFILING "Turn on simple MPI profiling." OFF)
152 mark_as_advanced(THREAD_MPI_PROFILING)
153 if (THREAD_MPI_PROFILING)
159 # tmpi warnings for testing
160 option(THREAD_MPI_WARNINGS "Turn thread_mpi warnings for testing." OFF)
161 mark_as_advanced(THREAD_MPI_WARNINGS)
162 if (THREAD_MPI_WARNINGS)
168 include(CheckCSourceCompiles)
169 ENDMACRO(TMPI_ENABLE)
172 MACRO(TMPI_GET_SOURCE_LIST SRC_VARIABLE SRC_ROOT)
174 ${SRC_ROOT}/errhandler.c
175 ${SRC_ROOT}/tmpi_malloc.c
180 list(APPEND ${SRC_VARIABLE} ${SRC_ROOT}/pthreads.c)
181 elseif (THREAD_WINDOWS)
182 list(APPEND ${SRC_VARIABLE} ${SRC_ROOT}/winthreads.c)
186 list(APPEND ${SRC_VARIABLE} ${SRC_ROOT}/system_error.cpp)
190 list(APPEND ${SRC_VARIABLE}
191 ${SRC_ROOT}/alltoall.c ${SRC_ROOT}/p2p_protocol.c
192 ${SRC_ROOT}/barrier.c ${SRC_ROOT}/p2p_send_recv.c
193 ${SRC_ROOT}/bcast.c ${SRC_ROOT}/p2p_wait.c
194 ${SRC_ROOT}/collective.c ${SRC_ROOT}/profile.c
195 ${SRC_ROOT}/comm.c ${SRC_ROOT}/reduce.c
196 ${SRC_ROOT}/event.c ${SRC_ROOT}/reduce_fast.c
197 ${SRC_ROOT}/gather.c ${SRC_ROOT}/scatter.c
198 ${SRC_ROOT}/group.c ${SRC_ROOT}/tmpi_init.c
199 ${SRC_ROOT}/topology.c ${SRC_ROOT}/list.c
200 ${SRC_ROOT}/type.c ${SRC_ROOT}/scan.c
201 ${SRC_ROOT}/numa_malloc.c ${SRC_ROOT}/once.c)
203 ENDMACRO(TMPI_GET_SOURCE_LIST)