1 /* Copyright (c) 2007-2020. 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/instr.h"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "simgrid/s4u/Host.hpp"
10 #include "simgrid/version.h"
11 #include "smpi_comm.hpp"
12 #include "smpi_datatype_derived.hpp"
13 #include "smpi_status.hpp"
14 #include "src/kernel/actor/ActorImpl.hpp"
15 #include "src/smpi/include/smpi_actor.hpp"
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_pmpi, smpi, "Logging specific to SMPI (pmpi)");
19 //this function need to be here because of the calls to smpi_bench
20 void TRACE_smpi_set_category(const char *category)
22 //need to end bench otherwise categories for execution tasks are wrong
24 if (category != nullptr) {
26 TRACE_category(category);
27 smpi_process()->set_tracing_category(category);
29 //begin bench after changing process's category
33 /* PMPI User level calls */
35 int PMPI_Init(int*, char***)
37 xbt_assert(simgrid::s4u::Engine::is_initialized(),
38 "Your MPI program was not properly initialized. The easiest is to use smpirun to start it.");
40 xbt_assert(not smpi_process()->initializing());
41 xbt_assert(not smpi_process()->initialized());
43 simgrid::smpi::ActorExt::init();
44 int rank_traced = simgrid::s4u::this_actor::get_pid();
45 TRACE_smpi_init(rank_traced, __func__);
47 smpi_process()->mark_as_initialized();
57 int rank_traced = simgrid::s4u::this_actor::get_pid();
58 TRACE_smpi_comm_in(rank_traced, __func__, new simgrid::instr::NoOpTIData("finalize"));
60 smpi_process()->finalize();
62 TRACE_smpi_comm_out(rank_traced);
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 2007-2020",
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::this_actor::get_pid() ==
113 1; // FIXME: I don't think this is correct: This just returns true if the process ID is 1,
114 // regardless of whether this process called MPI_Thread_Init() or not.
119 int PMPI_Abort(MPI_Comm /*comm*/, int /*errorcode*/)
122 // FIXME: should kill all processes in comm instead
123 XBT_WARN("MPI_Abort was called, something went probably wrong in this simulation ! Killing this process");
124 smx_actor_t actor = SIMIX_process_self();
125 simgrid::kernel::actor::simcall([actor] { actor->exit(); });
131 return smpi_mpi_wtime();
134 extern double sg_maxmin_precision;
137 return sg_maxmin_precision;
140 int PMPI_Address(const void* location, MPI_Aint* address)
142 if (address==nullptr) {
145 *address = reinterpret_cast<MPI_Aint>(location);
150 int PMPI_Get_address(const void *location, MPI_Aint * address)
152 return PMPI_Address(location, address);
155 int PMPI_Get_processor_name(char *name, int *resultlen)
157 strncpy(name, sg_host_self()->get_cname(),
158 strlen(sg_host_self()->get_cname()) < MPI_MAX_PROCESSOR_NAME - 1 ? strlen(sg_host_self()->get_cname()) + 1
159 : MPI_MAX_PROCESSOR_NAME - 1);
160 *resultlen = strlen(name) > MPI_MAX_PROCESSOR_NAME ? MPI_MAX_PROCESSOR_NAME : strlen(name);
165 int PMPI_Get_count(const MPI_Status * status, MPI_Datatype datatype, int *count)
167 if (status == nullptr || count == nullptr) {
169 } else if (not datatype->is_valid()) {
172 size_t size = datatype->size();
176 } else if (status->count % size != 0) {
177 return MPI_UNDEFINED;
179 *count = simgrid::smpi::Status::get_count(status, datatype);
185 int PMPI_Initialized(int* flag) {
186 *flag=(smpi_process()!=nullptr && smpi_process()->initialized());
190 int PMPI_Alloc_mem(MPI_Aint size, MPI_Info /*info*/, void* baseptr)
192 void *ptr = xbt_malloc(size);
194 return MPI_ERR_NO_MEM;
196 *static_cast<void**>(baseptr) = ptr;
201 int PMPI_Free_mem(void *baseptr){
206 int PMPI_Error_class(int errorcode, int* errorclass) {
207 // assume smpi uses only standard mpi error codes
208 *errorclass=errorcode;
212 int PMPI_Error_string(int errorcode, char* string, int* resultlen)
214 static const char* smpi_error_string[] = {FOREACH_ERROR(GENERATE_STRING)};
215 constexpr int nerrors = (sizeof smpi_error_string) / (sizeof smpi_error_string[0]);
216 if (errorcode < 0 || errorcode >= nerrors || string == nullptr)
219 int len = snprintf(string, MPI_MAX_ERROR_STRING, "%s", smpi_error_string[errorcode]);
220 *resultlen = std::min(len, MPI_MAX_ERROR_STRING - 1);
224 int PMPI_Keyval_create(MPI_Copy_function* copy_fn, MPI_Delete_function* delete_fn, int* keyval, void* extra_state) {
225 smpi_copy_fn _copy_fn={copy_fn,nullptr,nullptr,nullptr,nullptr,nullptr};
226 smpi_delete_fn _delete_fn={delete_fn,nullptr,nullptr,nullptr,nullptr,nullptr};
227 return simgrid::smpi::Keyval::keyval_create<simgrid::smpi::Comm>(_copy_fn, _delete_fn, keyval, extra_state);
230 int PMPI_Keyval_free(int* keyval) {
231 return simgrid::smpi::Keyval::keyval_free<simgrid::smpi::Comm>(keyval);
234 MPI_Errhandler PMPI_Errhandler_f2c(MPI_Fint errhan){
236 return MPI_ERRHANDLER_NULL;
237 return static_cast<MPI_Errhandler>(simgrid::smpi::Errhandler::f2c(errhan));
240 MPI_Fint PMPI_Errhandler_c2f(MPI_Errhandler errhan){
241 if(errhan==MPI_ERRHANDLER_NULL)
243 return errhan->c2f();
246 int PMPI_Buffer_attach(void *buf, int size){
248 return MPI_ERR_BUFFER;
251 smpi_process()->set_bsend_buffer(buf, size);
255 int PMPI_Buffer_detach(void* buffer, int* size){
256 smpi_process()->bsend_buffer((void**)buffer, size);
257 smpi_process()->set_bsend_buffer(nullptr, 0);