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} TRUE CACHE INTERNAL "Whether atomic operations for thread-MPI were found")
18 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.")
19 set(${VARIABLE} FALSE CACHE INTERNAL "Whether atomic operations for thread-MPI were found")
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)
66 test_tmpi_atomics(TMPI_ATOMICS)
69 if (CMAKE_USE_PTHREADS_INIT)
70 check_include_files(pthread.h HAVE_PTHREAD_H)
71 set(THREAD_PTHREADS 1)
72 #add_definitions(-DTHREAD_PTHREADS)
73 set(THREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
74 elseif (CMAKE_USE_WIN32_THREADS_INIT)
76 #add_definitions(-DTHREAD_WINDOWS)
79 message(FATAL_ERROR "Thread support required")
80 endif (CMAKE_USE_PTHREADS_INIT)
83 # the spin-waiting option
84 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)
85 mark_as_advanced(THREAD_MPI_WAIT_FOR_NO_ONE)
86 if (THREAD_MPI_WAIT_FOR_NO_ONE)
87 add_definitions(-DTMPI_WAIT_FOR_NO_ONE)
88 else (THREAD_MPI_WAIT_FOR_NO_ONE)
90 endif (THREAD_MPI_WAIT_FOR_NO_ONE)
93 # the copy buffer option
94 option(THREAD_MPI_COPY_BUFFER "Use an intermediate copy buffer for small message sizes, to allow blocking sends to return quickly." ON)
95 mark_as_advanced(THREAD_MPI_COPY_BUFFER)
96 if (THREAD_MPI_COPY_BUFFER)
98 else (THREAD_MPI_COPY_BUFFER)
99 add_definitions(-DTMPI_NO_COPY_BUFFER)
100 endif (THREAD_MPI_COPY_BUFFER)
103 # the profiling option
104 option(THREAD_MPI_PROFILING "Turn on simple MPI profiling." OFF)
105 mark_as_advanced(THREAD_MPI_PROFILING)
106 if (THREAD_MPI_PROFILING)
107 add_definitions(-DTMPI_PROFILE)
108 else (THREAD_MPI_PROFILING)
110 endif (THREAD_MPI_PROFILING)
112 include(CheckCSourceCompiles)
114 # option to set affinity
115 option(THREAD_MPI_SET_AFFINITY "Set thread affinity to a core if number of threads equal to number of hardware threads." ON)
116 mark_as_advanced(THREAD_MPI_SET_AFFINITY)
117 if (THREAD_MPI_SET_AFFINITY)
118 add_definitions(-DTMPI_SET_AFFINITY)
119 else (THREAD_MPI_SET_AFFINITY)
121 endif (THREAD_MPI_SET_AFFINITY)
123 include(CheckFunctionExists)
125 set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
126 # check for sched_setaffinity
127 check_c_source_compiles(
133 int main(void) { cpu_set_t set;
136 pthread_setaffinity_np(pthread_self(), sizeof(set), &set);
141 if (PTHREAD_SETAFFINITY)
142 set(HAVE_PTHREAD_SETAFFINITY 1)
143 endif (PTHREAD_SETAFFINITY)
144 set(CMAKE_REQUIRED_LIBRARIES)
145 endif (THREAD_PTHREADS)
148 # this runs on POSIX systems
149 check_include_files(unistd.h HAVE_UNISTD_H)
150 check_include_files(sched.h HAVE_SCHED_H)
151 check_include_files(sys/time.h HAVE_SYS_TIME_H)
152 check_function_exists(sysconf HAVE_SYSCONF)
153 # this runs on windows
154 #check_include_files(windows.h HAVE_WINDOWS_H)