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
24 const SmpiBenchGuard suspend_bench;
26 if (category != nullptr) {
28 TRACE_category(category);
29 smpi_process()->set_tracing_category(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 TRACE_smpi_init(simgrid::s4u::this_actor::get_pid(), __func__);
56 smpi_process()->mark_as_initialized();
66 aid_t rank_traced = simgrid::s4u::this_actor::get_pid();
67 TRACE_smpi_comm_in(rank_traced, __func__, new simgrid::instr::NoOpTIData("finalize"));
69 if(simgrid::config::get_value<bool>("smpi/finalization-barrier"))
70 simgrid::smpi::colls::barrier(MPI_COMM_WORLD);
72 smpi_process()->finalize();
74 TRACE_smpi_comm_out(rank_traced);
78 int PMPI_Finalized(int* flag)
80 *flag=smpi_process()!=nullptr ? smpi_process()->finalized() : 0;
84 int PMPI_Get_version (int *version,int *subversion){
85 *version = MPI_VERSION;
86 *subversion= MPI_SUBVERSION;
90 int PMPI_Get_library_version (char *version,int *len){
91 snprintf(version, MPI_MAX_LIBRARY_VERSION_STRING, "SMPI Version %d.%d. Copyright The SimGrid Team 2007-2021",
92 SIMGRID_VERSION_MAJOR, SIMGRID_VERSION_MINOR);
93 *len = std::min(static_cast<int>(strlen(version)), MPI_MAX_LIBRARY_VERSION_STRING);
97 int PMPI_Init_thread(int* argc, char*** argv, int /*required*/, int* provided)
99 if (provided != nullptr) {
100 *provided = MPI_THREAD_SINGLE;
102 return MPI_Init(argc, argv);
105 int PMPI_Query_thread(int *provided)
107 if (provided == nullptr) {
110 *provided = MPI_THREAD_SINGLE;
115 int PMPI_Is_thread_main(int *flag)
117 // FIXME: The MPI standard seems to say that fatal errors need to be triggered
118 // if MPI has been finalized or not yet been initialized
119 if (flag == nullptr) {
122 *flag = simgrid::s4u::this_actor::get_pid() ==
123 1; // FIXME: I don't think this is correct: This just returns true if the process ID is 1,
124 // regardless of whether this process called MPI_Thread_Init() or not.
129 int PMPI_Abort(MPI_Comm comm, int /*errorcode*/)
133 XBT_WARN("MPI_Abort was called, something went probably wrong in this simulation ! Killing all processes sharing the same MPI_COMM_WORLD");
134 smx_actor_t myself = SIMIX_process_self();
135 for (int i = 0; i < comm->size(); i++){
136 smx_actor_t actor = simgrid::kernel::actor::ActorImpl::by_pid(comm->group()->actor(i));
137 if (actor != nullptr && actor != myself)
138 simgrid::kernel::actor::simcall([actor] { actor->exit(); });
141 simgrid::kernel::actor::simcall([myself] { myself->exit(); });
147 return smpi_mpi_wtime();
150 extern double sg_maxmin_precision;
153 return sg_maxmin_precision;
156 int PMPI_Address(const void* location, MPI_Aint* address)
158 if (address==nullptr) {
161 *address = reinterpret_cast<MPI_Aint>(location);
166 int PMPI_Get_address(const void *location, MPI_Aint * address)
168 return PMPI_Address(location, address);
171 MPI_Aint PMPI_Aint_add(MPI_Aint address, MPI_Aint disp)
173 xbt_assert(address <= PTRDIFF_MAX - disp, "overflow in MPI_Aint_add");
174 return address + disp;
177 MPI_Aint PMPI_Aint_diff(MPI_Aint address, MPI_Aint disp)
179 xbt_assert(address >= PTRDIFF_MIN + disp, "underflow in MPI_Aint_diff");
180 return address - disp;
183 int PMPI_Get_processor_name(char *name, int *resultlen)
185 int len = std::min(static_cast<int>(sg_host_self()->get_name().size()), MPI_MAX_PROCESSOR_NAME - 1);
186 std::string(sg_host_self()->get_name()).copy(name, len);
193 int PMPI_Get_count(const MPI_Status * status, MPI_Datatype datatype, int *count)
195 if (status == nullptr || count == nullptr) {
197 } else if (not datatype->is_valid()) {
200 size_t size = datatype->size();
203 } else if (status->count % size != 0) {
204 *count = MPI_UNDEFINED;
206 *count = simgrid::smpi::Status::get_count(status, datatype);
212 int PMPI_Initialized(int* flag) {
213 *flag=(smpi_process()!=nullptr && smpi_process()->initialized());
217 int PMPI_Alloc_mem(MPI_Aint size, MPI_Info /*info*/, void* baseptr)
219 CHECK_NEGATIVE(1, MPI_ERR_COUNT, size)
220 void *ptr = xbt_malloc(size);
221 *static_cast<void**>(baseptr) = ptr;
225 int PMPI_Free_mem(void *baseptr){
230 int PMPI_Error_class(int errorcode, int* errorclass) {
231 // assume smpi uses only standard mpi error codes
232 *errorclass=errorcode;
236 int PMPI_Error_string(int errorcode, char* string, int* resultlen)
238 static const std::vector<const char*> smpi_error_string = {FOREACH_ERROR(GENERATE_STRING)};
239 if (errorcode < 0 || static_cast<size_t>(errorcode) >= smpi_error_string.size() || string == nullptr)
242 int len = snprintf(string, MPI_MAX_ERROR_STRING, "%s", smpi_error_string[errorcode]);
243 *resultlen = std::min(len, MPI_MAX_ERROR_STRING - 1);
247 int PMPI_Keyval_create(MPI_Copy_function* copy_fn, MPI_Delete_function* delete_fn, int* keyval, void* extra_state) {
248 smpi_copy_fn _copy_fn={copy_fn,nullptr,nullptr,nullptr,nullptr,nullptr};
249 smpi_delete_fn _delete_fn={delete_fn,nullptr,nullptr,nullptr,nullptr,nullptr};
250 return simgrid::smpi::Keyval::keyval_create<simgrid::smpi::Comm>(_copy_fn, _delete_fn, keyval, extra_state);
253 int PMPI_Keyval_free(int* keyval) {
254 CHECK_NULL(1, MPI_ERR_ARG, keyval)
255 CHECK_VAL(1, MPI_KEYVAL_INVALID, MPI_ERR_KEYVAL, *keyval)
256 return simgrid::smpi::Keyval::keyval_free<simgrid::smpi::Comm>(keyval);
259 int PMPI_Buffer_attach(void *buf, int size){
261 return MPI_ERR_BUFFER;
264 return smpi_process()->set_bsend_buffer(buf, size);
267 int PMPI_Buffer_detach(void* buffer, int* size){
268 smpi_process()->bsend_buffer((void**)buffer, size);
269 return smpi_process()->set_bsend_buffer(nullptr, 0);