2 include(CheckIncludeFiles)
3 include(CheckFunctionExists)
4 #include(CheckCSourceCompiles)
6 #option(THREAD_PTHREADS "Use posix threads" ON)
8 MACRO(TEST_TMPI_ATOMICS VARIABLE)
9 if (NOT DEFINED TMPI_ATOMICS)
10 try_compile(TEST_ATOMICS "${CMAKE_BINARY_DIR}"
11 "${CMAKE_SOURCE_DIR}/cmake/TestAtomics.c"
12 COMPILE_DEFINITIONS "-I${CMAKE_SOURCE_DIR}/src/gromacs/legacyheaders" )
15 message(STATUS "Atomics found")
16 set(${VARIABLE} CACHE INTERNAL 1)
18 message(WARNING "Atomics not found for this compiler+cpu combination. Thread support will be unbearably slow: disable threads. Atomics 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.")
19 set(${VARIABLE} CACHE INTERNAL 0)
21 endif(NOT DEFINED TMPI_ATOMICS)
22 ENDMACRO(TEST_TMPI_ATOMICS VARIABLE)
24 MACRO(TMPI_MAKE_CXX_LIB)
26 ENDMACRO(TMPI_MAKE_CXX_LIB)
28 MACRO(TMPI_GET_SOURCE_LIST SRC_VARIABLE)
29 foreach (_option IN ITEMS ${ARGN})
30 if (_option STREQUAL "CXX")
32 elseif (_option STREQUAL "NOMPI")
33 set(TMPI_NO_MPI_LIB 1)
35 message(FATAL_ERROR "Unknown thread_mpi option '${_option}'")
39 thread_mpi/errhandler.c
40 thread_mpi/tmpi_malloc.c)
42 list(APPEND ${SRC_VARIABLE} thread_mpi/pthreads.c)
43 elseif (THREAD_WINDOWS)
44 list(APPEND ${SRC_VARIABLE} thread_mpi/winthreads.c)
45 endif (THREAD_PTHREADS)
47 list(APPEND ${SRC_VARIABLE} thread_mpi/system_error.cpp)
49 if (NOT TMPI_NO_MPI_LIB)
50 list(APPEND ${SRC_VARIABLE}
51 thread_mpi/alltoall.c thread_mpi/p2p_protocol.c
52 thread_mpi/barrier.c thread_mpi/p2p_send_recv.c
53 thread_mpi/bcast.c thread_mpi/p2p_wait.c
54 thread_mpi/collective.c thread_mpi/profile.c
55 thread_mpi/comm.c thread_mpi/reduce.c
56 thread_mpi/event.c thread_mpi/reduce_fast.c
57 thread_mpi/gather.c thread_mpi/scatter.c
58 thread_mpi/group.c thread_mpi/tmpi_init.c
59 thread_mpi/topology.c thread_mpi/list.c
60 thread_mpi/type.c thread_mpi/lock.c
61 thread_mpi/numa_malloc.c thread_mpi/once.c
64 ENDMACRO(TMPI_GET_SOURCE_LIST)
67 if (CMAKE_USE_PTHREADS_INIT)
68 check_include_files(pthread.h HAVE_PTHREAD_H)
69 set(THREAD_PTHREADS 1)
70 #add_definitions(-DTHREAD_PTHREADS)
71 set(THREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
72 else (CMAKE_USE_PTHREADS_INIT)
73 if (CMAKE_USE_WIN32_THREADS_INIT)
75 #add_definitions(-DTHREAD_WINDOWS)
77 endif (CMAKE_USE_WIN32_THREADS_INIT)
78 endif (CMAKE_USE_PTHREADS_INIT)
81 # the spin-waiting option
82 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)
83 mark_as_advanced(THREAD_MPI_WAIT_FOR_NO_ONE)
84 if (THREAD_MPI_WAIT_FOR_NO_ONE)
85 add_definitions(-DTMPI_WAIT_FOR_NO_ONE)
86 else (THREAD_MPI_WAIT_FOR_NO_ONE)
88 endif (THREAD_MPI_WAIT_FOR_NO_ONE)
91 # the copy buffer option
92 option(THREAD_MPI_COPY_BUFFER "Use an intermediate copy buffer for small message sizes, to allow blocking sends to return quickly." ON)
93 mark_as_advanced(THREAD_MPI_COPY_BUFFER)
94 if (THREAD_MPI_COPY_BUFFER)
96 else (THREAD_MPI_COPY_BUFFER)
97 add_definitions(-DTMPI_NO_COPY_BUFFER)
98 endif (THREAD_MPI_COPY_BUFFER)
101 # the profiling option
102 option(THREAD_MPI_PROFILING "Turn on simple MPI profiling." OFF)
103 mark_as_advanced(THREAD_MPI_PROFILING)
104 if (THREAD_MPI_PROFILING)
105 add_definitions(-DTMPI_PROFILE)
106 else (THREAD_MPI_PROFILING)
108 endif (THREAD_MPI_PROFILING)
110 include(CheckCSourceCompiles)
112 # option to set affinity
113 option(THREAD_MPI_SET_AFFINITY "Set thread affinity to a core if number of threads equal to number of hardware threads." ON)
114 mark_as_advanced(THREAD_MPI_SET_AFFINITY)
115 if (THREAD_MPI_SET_AFFINITY)
116 add_definitions(-DTMPI_SET_AFFINITY)
117 else (THREAD_MPI_SET_AFFINITY)
119 endif (THREAD_MPI_SET_AFFINITY)
121 include(CheckFunctionExists)
123 set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
124 # check for sched_setaffinity
125 check_c_source_compiles(
131 int main(void) { cpu_set_t set;
134 pthread_setaffinity_np(pthread_self(), sizeof(set), &set);
139 if (PTHREAD_SETAFFINITY)
140 set(HAVE_PTHREAD_SETAFFINITY 1)
141 endif (PTHREAD_SETAFFINITY)
142 endif (THREAD_PTHREADS)
145 # this runs on POSIX systems
146 check_include_files(unistd.h HAVE_UNISTD_H)
147 check_include_files(sched.h HAVE_SCHED_H)
148 check_include_files(sys/time.h HAVE_SYS_TIME_H)
149 check_function_exists(sysconf HAVE_SYSCONF)
150 # this runs on windows
151 #check_include_files(windows.h HAVE_WINDOWS_H)
154 test_tmpi_atomics(TMPI_ATOMICS)