1 /* Copyright (c) 2007-2021. 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 if(smpi_process()->initializing()){
41 XBT_WARN("SMPI is already initializing - MPI_Init called twice ?");
44 if(smpi_process()->initialized()){
45 XBT_WARN("SMPI already initialized once - MPI_Init called twice ?");
48 if(smpi_process()->finalized()){
49 XBT_WARN("SMPI already finalized");
53 simgrid::smpi::ActorExt::init();
54 int rank_traced = simgrid::s4u::this_actor::get_pid();
55 TRACE_smpi_init(rank_traced, __func__);
57 smpi_process()->mark_as_initialized();
67 int rank_traced = simgrid::s4u::this_actor::get_pid();
68 TRACE_smpi_comm_in(rank_traced, __func__, new simgrid::instr::NoOpTIData("finalize"));
70 smpi_process()->finalize();
72 TRACE_smpi_comm_out(rank_traced);
76 int PMPI_Finalized(int* flag)
78 *flag=smpi_process()!=nullptr ? smpi_process()->finalized() : 0;
82 int PMPI_Get_version (int *version,int *subversion){
83 *version = MPI_VERSION;
84 *subversion= MPI_SUBVERSION;
88 int PMPI_Get_library_version (char *version,int *len){
89 snprintf(version, MPI_MAX_LIBRARY_VERSION_STRING, "SMPI Version %d.%d. Copyright The SimGrid Team 2007-2021",
90 SIMGRID_VERSION_MAJOR, SIMGRID_VERSION_MINOR);
91 *len = strlen(version) > MPI_MAX_LIBRARY_VERSION_STRING ? MPI_MAX_LIBRARY_VERSION_STRING : strlen(version);
95 int PMPI_Init_thread(int* argc, char*** argv, int /*required*/, int* provided)
97 if (provided != nullptr) {
98 *provided = MPI_THREAD_SINGLE;
100 return MPI_Init(argc, argv);
103 int PMPI_Query_thread(int *provided)
105 if (provided == nullptr) {
108 *provided = MPI_THREAD_SINGLE;
113 int PMPI_Is_thread_main(int *flag)
115 // FIXME: The MPI standard seems to say that fatal errors need to be triggered
116 // if MPI has been finalized or not yet been initialized
117 if (flag == nullptr) {
120 *flag = simgrid::s4u::this_actor::get_pid() ==
121 1; // FIXME: I don't think this is correct: This just returns true if the process ID is 1,
122 // regardless of whether this process called MPI_Thread_Init() or not.
127 int PMPI_Abort(MPI_Comm comm, int /*errorcode*/)
131 XBT_WARN("MPI_Abort was called, something went probably wrong in this simulation ! Killing all processes sharing the same MPI_COMM_WORLD");
132 smx_actor_t myself = SIMIX_process_self();
133 for (int i = 0; i < comm->size(); i++){
134 smx_actor_t actor = simgrid::kernel::actor::ActorImpl::by_pid(comm->group()->actor(i));
135 if (actor != nullptr && actor != myself)
136 simgrid::kernel::actor::simcall([actor] { actor->exit(); });
139 simgrid::kernel::actor::simcall([myself] { myself->exit(); });
145 return smpi_mpi_wtime();
148 extern double sg_maxmin_precision;
151 return sg_maxmin_precision;
154 int PMPI_Address(const void* location, MPI_Aint* address)
156 if (address==nullptr) {
159 *address = reinterpret_cast<MPI_Aint>(location);
164 int PMPI_Get_address(const void *location, MPI_Aint * address)
166 return PMPI_Address(location, address);
169 MPI_Aint PMPI_Aint_add(MPI_Aint address, MPI_Aint disp)
171 xbt_assert(address <= PTRDIFF_MAX - disp, "overflow in MPI_Aint_add");
172 return address + disp;
175 MPI_Aint PMPI_Aint_diff(MPI_Aint address, MPI_Aint disp)
177 xbt_assert(address >= PTRDIFF_MIN + disp, "underflow in MPI_Aint_diff");
178 return address - disp;
181 int PMPI_Get_processor_name(char *name, int *resultlen)
183 int len = std::min<int>(sg_host_self()->get_name().size(), MPI_MAX_PROCESSOR_NAME - 1);
184 std::string(sg_host_self()->get_name()).copy(name, len);
191 int PMPI_Get_count(const MPI_Status * status, MPI_Datatype datatype, int *count)
193 if (status == nullptr || count == nullptr) {
195 } else if (not datatype->is_valid()) {
198 size_t size = datatype->size();
201 } else if (status->count % size != 0) {
202 *count = MPI_UNDEFINED;
204 *count = simgrid::smpi::Status::get_count(status, datatype);
210 int PMPI_Initialized(int* flag) {
211 *flag=(smpi_process()!=nullptr && smpi_process()->initialized());
215 int PMPI_Alloc_mem(MPI_Aint size, MPI_Info /*info*/, void* baseptr)
217 CHECK_NEGATIVE(1, MPI_ERR_COUNT, size)
218 void *ptr = xbt_malloc(size);
219 *static_cast<void**>(baseptr) = ptr;
223 int PMPI_Free_mem(void *baseptr){
228 int PMPI_Error_class(int errorcode, int* errorclass) {
229 // assume smpi uses only standard mpi error codes
230 *errorclass=errorcode;
234 int PMPI_Error_string(int errorcode, char* string, int* resultlen)
236 static const std::vector<const char*> smpi_error_string = {FOREACH_ERROR(GENERATE_STRING)};
237 if (errorcode < 0 || static_cast<size_t>(errorcode) >= smpi_error_string.size() || string == nullptr)
240 int len = snprintf(string, MPI_MAX_ERROR_STRING, "%s", smpi_error_string[errorcode]);
241 *resultlen = std::min(len, MPI_MAX_ERROR_STRING - 1);
245 int PMPI_Keyval_create(MPI_Copy_function* copy_fn, MPI_Delete_function* delete_fn, int* keyval, void* extra_state) {
246 smpi_copy_fn _copy_fn={copy_fn,nullptr,nullptr,nullptr,nullptr,nullptr};
247 smpi_delete_fn _delete_fn={delete_fn,nullptr,nullptr,nullptr,nullptr,nullptr};
248 return simgrid::smpi::Keyval::keyval_create<simgrid::smpi::Comm>(_copy_fn, _delete_fn, keyval, extra_state);
251 int PMPI_Keyval_free(int* keyval) {
252 CHECK_NULL(1, MPI_ERR_ARG, keyval)
253 CHECK_VAL(1, MPI_KEYVAL_INVALID, MPI_ERR_KEYVAL, *keyval)
254 return simgrid::smpi::Keyval::keyval_free<simgrid::smpi::Comm>(keyval);
257 int PMPI_Buffer_attach(void *buf, int size){
259 return MPI_ERR_BUFFER;
262 return smpi_process()->set_bsend_buffer(buf, size);
265 int PMPI_Buffer_detach(void* buffer, int* size){
266 smpi_process()->bsend_buffer((void**)buffer, size);
267 return smpi_process()->set_bsend_buffer(nullptr, 0);