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 "smpi_coll.hpp"
15 #include "src/kernel/actor/ActorImpl.hpp"
16 #include "src/smpi/include/smpi_actor.hpp"
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_pmpi, smpi, "Logging specific to SMPI (pmpi)");
20 //this function need to be here because of the calls to smpi_bench
21 void TRACE_smpi_set_category(const char *category)
23 //need to end bench otherwise categories for execution tasks are wrong
25 if (category != nullptr) {
27 TRACE_category(category);
28 smpi_process()->set_tracing_category(category);
30 //begin bench after changing process's category
34 /* PMPI User level calls */
36 int PMPI_Init(int*, char***)
38 xbt_assert(simgrid::s4u::Engine::is_initialized(),
39 "Your MPI program was not properly initialized. The easiest is to use smpirun to start it.");
41 if(smpi_process()->initializing()){
42 XBT_WARN("SMPI is already initializing - MPI_Init called twice ?");
45 if(smpi_process()->initialized()){
46 XBT_WARN("SMPI already initialized once - MPI_Init called twice ?");
49 if(smpi_process()->finalized()){
50 XBT_WARN("SMPI already finalized");
54 simgrid::smpi::ActorExt::init();
55 TRACE_smpi_init(simgrid::s4u::this_actor::get_pid(), __func__);
57 smpi_process()->mark_as_initialized();
67 aid_t rank_traced = simgrid::s4u::this_actor::get_pid();
68 TRACE_smpi_comm_in(rank_traced, __func__, new simgrid::instr::NoOpTIData("finalize"));
70 if(simgrid::config::get_value<bool>("smpi/finalization-barrier"))
71 simgrid::smpi::colls::barrier(MPI_COMM_WORLD);
73 smpi_process()->finalize();
75 TRACE_smpi_comm_out(rank_traced);
79 int PMPI_Finalized(int* flag)
81 *flag=smpi_process()!=nullptr ? smpi_process()->finalized() : 0;
85 int PMPI_Get_version (int *version,int *subversion){
86 *version = MPI_VERSION;
87 *subversion= MPI_SUBVERSION;
91 int PMPI_Get_library_version (char *version,int *len){
92 snprintf(version, MPI_MAX_LIBRARY_VERSION_STRING, "SMPI Version %d.%d. Copyright The SimGrid Team 2007-2021",
93 SIMGRID_VERSION_MAJOR, SIMGRID_VERSION_MINOR);
94 *len = strlen(version) > MPI_MAX_LIBRARY_VERSION_STRING ? MPI_MAX_LIBRARY_VERSION_STRING : strlen(version);
98 int PMPI_Init_thread(int* argc, char*** argv, int /*required*/, int* provided)
100 if (provided != nullptr) {
101 *provided = MPI_THREAD_SINGLE;
103 return MPI_Init(argc, argv);
106 int PMPI_Query_thread(int *provided)
108 if (provided == nullptr) {
111 *provided = MPI_THREAD_SINGLE;
116 int PMPI_Is_thread_main(int *flag)
118 // FIXME: The MPI standard seems to say that fatal errors need to be triggered
119 // if MPI has been finalized or not yet been initialized
120 if (flag == nullptr) {
123 *flag = simgrid::s4u::this_actor::get_pid() ==
124 1; // FIXME: I don't think this is correct: This just returns true if the process ID is 1,
125 // regardless of whether this process called MPI_Thread_Init() or not.
130 int PMPI_Abort(MPI_Comm comm, int /*errorcode*/)
134 XBT_WARN("MPI_Abort was called, something went probably wrong in this simulation ! Killing all processes sharing the same MPI_COMM_WORLD");
135 smx_actor_t myself = SIMIX_process_self();
136 for (int i = 0; i < comm->size(); i++){
137 smx_actor_t actor = simgrid::kernel::actor::ActorImpl::by_pid(comm->group()->actor(i));
138 if (actor != nullptr && actor != myself)
139 simgrid::kernel::actor::simcall([actor] { actor->exit(); });
142 simgrid::kernel::actor::simcall([myself] { myself->exit(); });
148 return smpi_mpi_wtime();
151 extern double sg_maxmin_precision;
154 return sg_maxmin_precision;
157 int PMPI_Address(const void* location, MPI_Aint* address)
159 if (address==nullptr) {
162 *address = reinterpret_cast<MPI_Aint>(location);
167 int PMPI_Get_address(const void *location, MPI_Aint * address)
169 return PMPI_Address(location, address);
172 MPI_Aint PMPI_Aint_add(MPI_Aint address, MPI_Aint disp)
174 xbt_assert(address <= PTRDIFF_MAX - disp, "overflow in MPI_Aint_add");
175 return address + disp;
178 MPI_Aint PMPI_Aint_diff(MPI_Aint address, MPI_Aint disp)
180 xbt_assert(address >= PTRDIFF_MIN + disp, "underflow in MPI_Aint_diff");
181 return address - disp;
184 int PMPI_Get_processor_name(char *name, int *resultlen)
186 int len = std::min<int>(sg_host_self()->get_name().size(), MPI_MAX_PROCESSOR_NAME - 1);
187 std::string(sg_host_self()->get_name()).copy(name, len);
194 int PMPI_Get_count(const MPI_Status * status, MPI_Datatype datatype, int *count)
196 if (status == nullptr || count == nullptr) {
198 } else if (not datatype->is_valid()) {
201 size_t size = datatype->size();
204 } else if (status->count % size != 0) {
205 *count = MPI_UNDEFINED;
207 *count = simgrid::smpi::Status::get_count(status, datatype);
213 int PMPI_Initialized(int* flag) {
214 *flag=(smpi_process()!=nullptr && smpi_process()->initialized());
218 int PMPI_Alloc_mem(MPI_Aint size, MPI_Info /*info*/, void* baseptr)
220 CHECK_NEGATIVE(1, MPI_ERR_COUNT, size)
221 void *ptr = xbt_malloc(size);
222 *static_cast<void**>(baseptr) = ptr;
226 int PMPI_Free_mem(void *baseptr){
231 int PMPI_Error_class(int errorcode, int* errorclass) {
232 // assume smpi uses only standard mpi error codes
233 *errorclass=errorcode;
237 int PMPI_Error_string(int errorcode, char* string, int* resultlen)
239 static const std::vector<const char*> smpi_error_string = {FOREACH_ERROR(GENERATE_STRING)};
240 if (errorcode < 0 || static_cast<size_t>(errorcode) >= smpi_error_string.size() || string == nullptr)
243 int len = snprintf(string, MPI_MAX_ERROR_STRING, "%s", smpi_error_string[errorcode]);
244 *resultlen = std::min(len, MPI_MAX_ERROR_STRING - 1);
248 int PMPI_Keyval_create(MPI_Copy_function* copy_fn, MPI_Delete_function* delete_fn, int* keyval, void* extra_state) {
249 smpi_copy_fn _copy_fn={copy_fn,nullptr,nullptr,nullptr,nullptr,nullptr};
250 smpi_delete_fn _delete_fn={delete_fn,nullptr,nullptr,nullptr,nullptr,nullptr};
251 return simgrid::smpi::Keyval::keyval_create<simgrid::smpi::Comm>(_copy_fn, _delete_fn, keyval, extra_state);
254 int PMPI_Keyval_free(int* keyval) {
255 CHECK_NULL(1, MPI_ERR_ARG, keyval)
256 CHECK_VAL(1, MPI_KEYVAL_INVALID, MPI_ERR_KEYVAL, *keyval)
257 return simgrid::smpi::Keyval::keyval_free<simgrid::smpi::Comm>(keyval);
260 int PMPI_Buffer_attach(void *buf, int size){
262 return MPI_ERR_BUFFER;
265 return smpi_process()->set_bsend_buffer(buf, size);
268 int PMPI_Buffer_detach(void* buffer, int* size){
269 smpi_process()->bsend_buffer((void**)buffer, size);
270 return smpi_process()->set_bsend_buffer(nullptr, 0);