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
42 # include directory for thread_mpi/atomic.h
43 MACRO(TMPI_TEST_ATOMICS INCDIR)
44 if (NOT DEFINED TMPI_ATOMICS)
45 try_compile(TEST_ATOMICS "${CMAKE_BINARY_DIR}"
46 "${CMAKE_SOURCE_DIR}/cmake/TestAtomics.c"
47 COMPILE_DEFINITIONS "-I${INCDIR}")
49 message(STATUS "Atomic operations found")
51 message(STATUS "Atomic operations not found")
53 set(TMPI_ATOMICS ${TEST_ATOMICS} CACHE INTERNAL "Whether atomic operations are found")
54 set(TMPI_ATOMICS_INCDIR ${INCDIR} CACHE INTERNAL "Atomic operations check include dir")
55 endif(NOT DEFINED TMPI_ATOMICS)
56 ENDMACRO(TMPI_TEST_ATOMICS VARIABLE)
60 if (CMAKE_USE_PTHREADS_INIT)
61 check_include_files(pthread.h HAVE_PTHREAD_H)
62 set(THREAD_PTHREADS 1)
63 set(THREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
64 elseif (CMAKE_USE_WIN32_THREADS_INIT)
68 message(FATAL_ERROR "Thread support required")
69 endif (CMAKE_USE_PTHREADS_INIT)
71 # Turns on thread_mpi core threading functions.
72 MACRO(TMPI_ENABLE_CORE INCDIR)
73 TMPI_TEST_ATOMICS(${INCDIR})
76 include(CheckFunctionExists)
78 set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
79 # check for sched_setaffinity
80 check_c_source_compiles(
86 int main(void) { cpu_set_t set;
89 pthread_setaffinity_np(pthread_self(), sizeof(set), &set);
94 if (PTHREAD_SETAFFINITY)
95 set(HAVE_PTHREAD_SETAFFINITY 1)
96 endif (PTHREAD_SETAFFINITY)
97 set(CMAKE_REQUIRED_LIBRARIES)
98 endif (THREAD_PTHREADS)
101 # this runs on POSIX systems
102 check_include_files(unistd.h HAVE_UNISTD_H)
103 check_include_files(sched.h HAVE_SCHED_H)
104 check_include_files(sys/time.h HAVE_SYS_TIME_H)
105 check_function_exists(sysconf HAVE_SYSCONF)
106 # this runs on windows
107 #check_include_files(windows.h HAVE_WINDOWS_H)
108 ENDMACRO(TMPI_ENABLE_CORE)
110 # enable C++ library build.
111 MACRO(TMPI_ENABLE_CXX)
113 ENDMACRO(TMPI_ENABLE_CXX)
115 # Turns on thread_mpi MPI functions.
117 # first check whether threads and atomics are available.
119 # check again, to allow the user to fix this.
120 unset(TMPI_ATOMICS CACHE)
121 TMPI_TEST_ATOMICS(${TMPI_ATOMICS_INCDIR})
122 endif(NOT TMPI_ATOMICS)
124 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.")
125 endif(NOT TMPI_ATOMICS)
129 # the spin-waiting option
130 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)
131 mark_as_advanced(THREAD_MPI_WAIT_FOR_NO_ONE)
132 if (THREAD_MPI_WAIT_FOR_NO_ONE)
133 set(TMPI_WAIT_FOR_NO_ONE 1)
134 else (THREAD_MPI_WAIT_FOR_NO_ONE)
135 set(TMPI_WAIT_FOR_NO_ONE 0)
136 endif (THREAD_MPI_WAIT_FOR_NO_ONE)
138 # the copy buffer option
139 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)
140 mark_as_advanced(THREAD_MPI_COPY_BUFFER)
141 if (THREAD_MPI_COPY_BUFFER)
142 set(TMPI_COPY_BUFFER 1)
143 else (THREAD_MPI_COPY_BUFFER)
144 set(TMPI_COPY_BUFFER 0)
145 endif (THREAD_MPI_COPY_BUFFER)
147 # the profiling option
148 option(THREAD_MPI_PROFILING "Turn on simple MPI profiling." OFF)
149 mark_as_advanced(THREAD_MPI_PROFILING)
150 if (THREAD_MPI_PROFILING)
152 else (THREAD_MPI_PROFILING)
154 endif (THREAD_MPI_PROFILING)
156 # tmpi warnings for testing
157 option(THREAD_MPI_WARNINGS "Turn thread_mpi warnings for testing." OFF)
158 mark_as_advanced(THREAD_MPI_WARNINGS)
159 if (THREAD_MPI_WARNINGS)
161 else (THREAD_MPI_WARNINGS)
163 endif (THREAD_MPI_WARNINGS)
165 include(CheckCSourceCompiles)
166 ENDMACRO(TMPI_ENABLE)
169 MACRO(TMPI_GET_SOURCE_LIST SRC_VARIABLE)
171 thread_mpi/errhandler.c
172 thread_mpi/tmpi_malloc.c
176 list(APPEND ${SRC_VARIABLE} thread_mpi/pthreads.c)
177 elseif (THREAD_WINDOWS)
178 list(APPEND ${SRC_VARIABLE} thread_mpi/winthreads.c)
179 endif (THREAD_PTHREADS)
181 list(APPEND ${SRC_VARIABLE} thread_mpi/system_error.cpp)
184 list(APPEND ${SRC_VARIABLE}
185 thread_mpi/alltoall.c thread_mpi/p2p_protocol.c
186 thread_mpi/barrier.c thread_mpi/p2p_send_recv.c
187 thread_mpi/bcast.c thread_mpi/p2p_wait.c
188 thread_mpi/collective.c thread_mpi/profile.c
189 thread_mpi/comm.c thread_mpi/reduce.c
190 thread_mpi/event.c thread_mpi/reduce_fast.c
191 thread_mpi/gather.c thread_mpi/scatter.c
192 thread_mpi/group.c thread_mpi/tmpi_init.c
193 thread_mpi/topology.c thread_mpi/list.c
194 thread_mpi/type.c thread_mpi/scan.c
195 thread_mpi/numa_malloc.c thread_mpi/once.c)
197 ENDMACRO(TMPI_GET_SOURCE_LIST)