1 /* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "simgrid/s4u/Engine.hpp"
8 #include "simgrid/s4u/Host.hpp"
9 #include "smpi_comm.hpp"
10 #include "smpi_datatype_derived.hpp"
11 #include "smpi_process.hpp"
12 #include "smpi_status.hpp"
13 #include "src/simix/ActorImpl.hpp"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_pmpi, smpi, "Logging specific to SMPI (pmpi)");
17 //this function need to be here because of the calls to smpi_bench
18 void TRACE_smpi_set_category(const char *category)
20 //need to end bench otherwise categories for execution tasks are wrong
22 TRACE_internal_smpi_set_category (category);
23 //begin bench after changing process's category
27 /* PMPI User level calls */
28 extern "C" { // Obviously, the C MPI interface should use the C linkage
30 int PMPI_Init(int *argc, char ***argv)
32 xbt_assert(simgrid::s4u::Engine::isInitialized(),
33 "Your MPI program was not properly initialized. The easiest is to use smpirun to start it.");
34 // PMPI_Init is called only once per SMPI process
36 MPI_Initialized(&already_init);
37 if(already_init == 0){
38 simgrid::smpi::Process::init(argc, argv);
39 smpi_process()->mark_as_initialized();
40 int rank = simgrid::s4u::Actor::self()->getPid();
41 TRACE_smpi_init(rank);
42 TRACE_smpi_comm_in(rank, __FUNCTION__, new simgrid::instr::NoOpTIData("init"));
43 TRACE_smpi_comm_out(rank);
44 TRACE_smpi_computing_init(rank);
56 int rank = simgrid::s4u::Actor::self()->getPid();
57 TRACE_smpi_comm_in(rank, __FUNCTION__, new simgrid::instr::NoOpTIData("finalize"));
59 smpi_process()->finalize();
61 TRACE_smpi_comm_out(rank);
62 TRACE_smpi_finalize(rank);
66 int PMPI_Finalized(int* flag)
68 *flag=smpi_process()!=nullptr ? smpi_process()->finalized() : 0;
72 int PMPI_Get_version (int *version,int *subversion){
73 *version = MPI_VERSION;
74 *subversion= MPI_SUBVERSION;
78 int PMPI_Get_library_version (char *version,int *len){
80 snprintf(version, MPI_MAX_LIBRARY_VERSION_STRING, "SMPI Version %d.%d. Copyright The Simgrid Team 2007-2017",
81 SIMGRID_VERSION_MAJOR, SIMGRID_VERSION_MINOR);
82 *len = strlen(version) > MPI_MAX_LIBRARY_VERSION_STRING ? MPI_MAX_LIBRARY_VERSION_STRING : strlen(version);
87 int PMPI_Init_thread(int* argc, char*** argv, int /*required*/, int* provided)
89 if (provided != nullptr) {
90 *provided = MPI_THREAD_SINGLE;
92 return MPI_Init(argc, argv);
95 int PMPI_Query_thread(int *provided)
97 if (provided == nullptr) {
100 *provided = MPI_THREAD_SINGLE;
105 int PMPI_Is_thread_main(int *flag)
107 // FIXME: The MPI standard seems to say that fatal errors need to be triggered
108 // if MPI has been finalized or not yet been initialized
109 if (flag == nullptr) {
112 *flag = simgrid::s4u::Actor::self()->getPid() == 1; // FIXME: I don't think this is correct: This just returns true if the process ID is 1,
113 // regardless of whether this process called MPI_Thread_Init() or not.
118 int PMPI_Abort(MPI_Comm /*comm*/, int /*errorcode*/)
121 // FIXME: should kill all processes in comm instead
122 smx_actor_t process = SIMIX_process_self();
123 simgrid::simix::kernelImmediate([process] { SIMIX_process_kill(process, process); });
129 return smpi_mpi_wtime();
132 extern double sg_maxmin_precision;
135 return sg_maxmin_precision;
138 int PMPI_Address(void *location, MPI_Aint * address)
140 if (address==nullptr) {
143 *address = reinterpret_cast<MPI_Aint>(location);
148 int PMPI_Get_address(void *location, MPI_Aint * address)
150 return PMPI_Address(location, address);
153 int PMPI_Get_processor_name(char *name, int *resultlen)
155 strncpy(name, sg_host_self()->getCname(), strlen(sg_host_self()->getCname()) < MPI_MAX_PROCESSOR_NAME - 1
156 ? strlen(sg_host_self()->getCname()) + 1
157 : MPI_MAX_PROCESSOR_NAME - 1);
158 *resultlen = strlen(name) > MPI_MAX_PROCESSOR_NAME ? MPI_MAX_PROCESSOR_NAME : strlen(name);
163 int PMPI_Get_count(MPI_Status * status, MPI_Datatype datatype, int *count)
165 if (status == nullptr || count == nullptr) {
167 } else if (not datatype->is_valid()) {
170 size_t size = datatype->size();
174 } else if (status->count % size != 0) {
175 return MPI_UNDEFINED;
177 *count = simgrid::smpi::Status::get_count(status, datatype);
183 int PMPI_Initialized(int* flag) {
184 *flag=(smpi_process()!=nullptr && smpi_process()->initialized());
188 int PMPI_Alloc_mem(MPI_Aint size, MPI_Info /*info*/, void* baseptr)
190 void *ptr = xbt_malloc(size);
192 return MPI_ERR_NO_MEM;
194 *static_cast<void**>(baseptr) = ptr;
199 int PMPI_Free_mem(void *baseptr){
204 int PMPI_Error_class(int errorcode, int* errorclass) {
205 // assume smpi uses only standard mpi error codes
206 *errorclass=errorcode;
210 int PMPI_Keyval_create(MPI_Copy_function* copy_fn, MPI_Delete_function* delete_fn, int* keyval, void* extra_state) {
211 smpi_copy_fn _copy_fn={copy_fn,nullptr,nullptr};
212 smpi_delete_fn _delete_fn={delete_fn,nullptr,nullptr};
213 return simgrid::smpi::Keyval::keyval_create<simgrid::smpi::Comm>(_copy_fn, _delete_fn, keyval, extra_state);
216 int PMPI_Keyval_free(int* keyval) {
217 return simgrid::smpi::Keyval::keyval_free<simgrid::smpi::Comm>(keyval);