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")
69 if(CMAKE_USE_WIN32_THREADS_INIT AND NOT HAVE_PROCESSOR_NUMBER)
70 message(WARNING "Incomplete Windows Processor Group API. If you want GROMACS to be able to set thread affinity, choose a Mingw distribution with a complete API (e.g. Mingw-w64).")
73 if (CMAKE_USE_WIN32_THREADS_INIT AND HAVE_PROCESSOR_NUMBER)
76 elseif (CMAKE_USE_PTHREADS_INIT)
77 check_include_files(pthread.h HAVE_PTHREAD_H)
78 set(THREAD_PTHREADS 1)
79 set(THREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
81 message(FATAL_ERROR "Thread support required")
84 # Turns on thread_mpi core threading functions.
85 MACRO(TMPI_ENABLE_CORE INCDIR)
86 TMPI_TEST_ATOMICS(${INCDIR})
89 include(CheckFunctionExists)
91 set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
92 # check for sched_setaffinity
93 check_c_source_compiles(
99 int main(void) { cpu_set_t set;
102 pthread_setaffinity_np(pthread_self(), sizeof(set), &set);
107 if (PTHREAD_SETAFFINITY)
108 set(HAVE_PTHREAD_SETAFFINITY 1)
110 set(CMAKE_REQUIRED_LIBRARIES)
114 # this runs on POSIX systems
115 check_include_files(unistd.h HAVE_UNISTD_H)
116 check_include_files(sched.h HAVE_SCHED_H)
117 check_include_files(sys/time.h HAVE_SYS_TIME_H)
118 check_function_exists(sysconf HAVE_SYSCONF)
119 # this runs on windows
120 #check_include_files(windows.h HAVE_WINDOWS_H)
121 ENDMACRO(TMPI_ENABLE_CORE)
123 # enable C++ library build.
124 MACRO(TMPI_ENABLE_CXX)
126 ENDMACRO(TMPI_ENABLE_CXX)
128 # Turns on thread_mpi MPI functions.
130 TMPI_TEST_ATOMICS(TMPI_ATOMICS_INCDIR)
131 if(NOT DEFINED TMPI_ATOMICS)
132 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.")
137 # the spin-waiting option
138 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)
139 mark_as_advanced(THREAD_MPI_WAIT_FOR_NO_ONE)
140 if (THREAD_MPI_WAIT_FOR_NO_ONE)
141 set(TMPI_WAIT_FOR_NO_ONE 1)
143 set(TMPI_WAIT_FOR_NO_ONE 0)
146 # the copy buffer option
147 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)
148 mark_as_advanced(THREAD_MPI_COPY_BUFFER)
149 if (THREAD_MPI_COPY_BUFFER)
150 set(TMPI_COPY_BUFFER 1)
152 set(TMPI_COPY_BUFFER 0)
155 # the profiling option
156 option(THREAD_MPI_PROFILING "Turn on simple MPI profiling." OFF)
157 mark_as_advanced(THREAD_MPI_PROFILING)
158 if (THREAD_MPI_PROFILING)
164 # tmpi warnings for testing
165 option(THREAD_MPI_WARNINGS "Turn thread_mpi warnings for testing." OFF)
166 mark_as_advanced(THREAD_MPI_WARNINGS)
167 if (THREAD_MPI_WARNINGS)
173 include(CheckCSourceCompiles)
174 ENDMACRO(TMPI_ENABLE)
177 MACRO(TMPI_GET_SOURCE_LIST SRC_VARIABLE SRC_ROOT)
179 ${SRC_ROOT}/errhandler.c
180 ${SRC_ROOT}/tmpi_malloc.c
185 list(APPEND ${SRC_VARIABLE} ${SRC_ROOT}/pthreads.c)
186 elseif (THREAD_WINDOWS)
187 list(APPEND ${SRC_VARIABLE} ${SRC_ROOT}/winthreads.c)
191 list(APPEND ${SRC_VARIABLE} ${SRC_ROOT}/system_error.cpp)
195 list(APPEND ${SRC_VARIABLE}
196 ${SRC_ROOT}/alltoall.c ${SRC_ROOT}/p2p_protocol.c
197 ${SRC_ROOT}/barrier.c ${SRC_ROOT}/p2p_send_recv.c
198 ${SRC_ROOT}/bcast.c ${SRC_ROOT}/p2p_wait.c
199 ${SRC_ROOT}/collective.c ${SRC_ROOT}/profile.c
200 ${SRC_ROOT}/comm.c ${SRC_ROOT}/reduce.c
201 ${SRC_ROOT}/event.c ${SRC_ROOT}/reduce_fast.c
202 ${SRC_ROOT}/gather.c ${SRC_ROOT}/scatter.c
203 ${SRC_ROOT}/group.c ${SRC_ROOT}/tmpi_init.c
204 ${SRC_ROOT}/topology.c ${SRC_ROOT}/list.c
205 ${SRC_ROOT}/type.c ${SRC_ROOT}/scan.c
206 ${SRC_ROOT}/numa_malloc.c ${SRC_ROOT}/once.c)
208 ENDMACRO(TMPI_GET_SOURCE_LIST)