1 /* Copyright (c) 2007-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "smpi_mpi_dt_private.h"
11 #include "src/mc/mc_record.h"
12 #include "xbt/replay.h"
13 #include "surf/surf.h"
14 #include "src/simix/smx_private.h"
15 #include "simgrid/sg_config.h"
16 #include "src/mc/mc_replay.h"
17 #include "src/msg/msg_private.h"
18 #include "src/simix/SynchroComm.hpp"
21 #include <float.h> /* DBL_MAX */
27 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_kernel, smpi, "Logging specific to SMPI (kernel)");
28 #include <boost/tokenizer.hpp>
29 #include <boost/algorithm/string.hpp> /* trim_right / trim_left */
31 std::unordered_map<std::string, double> location2speedup;
33 typedef struct s_smpi_process_data {
37 smx_mailbox_t mailbox;
38 smx_mailbox_t mailbox_small;
39 xbt_mutex_t mailboxes_mutex;
44 void *data; /* user data */
47 int sampling; /* inside an SMPI_SAMPLE_ block? */
49 bool replaying; /* is the process replaying a trace */
50 xbt_bar_t finalization_barrier;
52 smpi_trace_call_location_t* trace_call_loc;
53 } s_smpi_process_data_t;
55 static smpi_process_data_t *process_data = nullptr;
56 int process_count = 0;
57 int smpi_universe_size = 0;
58 int* index_to_process_data = nullptr;
59 extern double smpi_total_benched_time;
60 xbt_os_timer_t global_timer;
61 MPI_Comm MPI_COMM_WORLD = MPI_COMM_UNINITIALIZED;
62 MPI_Errhandler *MPI_ERRORS_RETURN = nullptr;
63 MPI_Errhandler *MPI_ERRORS_ARE_FATAL = nullptr;
64 MPI_Errhandler *MPI_ERRHANDLER_NULL = nullptr;
66 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
68 static char *get_mailbox_name(char *str, int index)
70 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int> (sizeof(int) * 2), index);
74 static char *get_mailbox_name_small(char *str, int index)
76 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int> (sizeof(int) * 2), index);
80 void smpi_process_init(int *argc, char ***argv)
83 smpi_process_data_t data;
86 if (argc != nullptr && argv != nullptr) {
87 proc = SIMIX_process_self();
88 SIMIX_process_set_cleanup_function(proc, MSG_process_cleanup_from_SIMIX);
89 char* instance_id = (*argv)[1];
90 int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
91 index = smpi_process_index_of_smx_process(proc);
93 if(index_to_process_data == nullptr){
94 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
97 if(smpi_privatize_global_variables){
98 /* Now using segment index of the process */
99 index = proc->segment_index;
100 /* Done at the process's creation */
101 SMPI_switch_data_segment(index);
104 MPI_Comm* temp_comm_world;
106 smpi_deployment_register_process(instance_id, rank, index, &temp_comm_world, &temp_bar);
107 data = smpi_process_remote_data(index);
108 data->comm_world = temp_comm_world;
109 if(temp_bar != nullptr)
110 data->finalization_barrier = temp_bar;
112 data->instance_id = instance_id;
113 data->replaying = false;
115 simdata_process_t simdata = static_cast<simdata_process_t>(simcall_process_get_data(proc));
116 simdata->data = data;
119 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
120 (*argv)[(*argc) - 1] = nullptr;
121 (*argv)[(*argc) - 2] = nullptr;
126 // set the process attached to the mailbox
127 simcall_mbox_set_receiver(data->mailbox_small, proc);
128 XBT_DEBUG("<%d> New process in the game: %p", index, proc);
130 xbt_assert(smpi_process_data(),
131 "smpi_process_data() returned nullptr. You probably gave a nullptr parameter to MPI_Init. Although it's required by "
132 "MPI-2, this is currently not supported by SMPI.");
135 void smpi_process_destroy()
137 int index = smpi_process_index();
138 if(smpi_privatize_global_variables){
139 smpi_switch_data_segment(index);
141 process_data[index_to_process_data[index]]->state = SMPI_FINALIZED;
142 XBT_DEBUG("<%d> Process left the game", index);
145 /** @brief Prepares the current process for termination. */
146 void smpi_process_finalize()
148 // This leads to an explosion of the search graph which cannot be reduced:
149 if(MC_is_active() || MC_record_replay_is_active())
152 int index = smpi_process_index();
153 // wait for all pending asynchronous comms to finish
154 xbt_barrier_wait(process_data[index_to_process_data[index]]->finalization_barrier);
157 /** @brief Check if a process is finalized */
158 int smpi_process_finalized()
160 int index = smpi_process_index();
161 if (index != MPI_UNDEFINED)
162 return (process_data[index_to_process_data[index]]->state == SMPI_FINALIZED);
167 /** @brief Check if a process is initialized */
168 int smpi_process_initialized()
170 if (index_to_process_data == nullptr){
173 int index = smpi_process_index();
174 return ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state == SMPI_INITIALIZED));
178 /** @brief Mark a process as initialized (=MPI_Init called) */
179 void smpi_process_mark_as_initialized()
181 int index = smpi_process_index();
182 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
183 process_data[index_to_process_data[index]]->state = SMPI_INITIALIZED;
186 void smpi_process_set_replaying(bool value){
187 int index = smpi_process_index();
188 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
189 process_data[index_to_process_data[index]]->replaying = value;
192 bool smpi_process_get_replaying(){
193 int index = smpi_process_index();
194 if (index != MPI_UNDEFINED)
195 return process_data[index_to_process_data[index]]->replaying;
196 else return (_xbt_replay_is_active() != 0);
199 int smpi_global_size()
201 char *value = getenv("SMPI_GLOBAL_SIZE");
202 xbt_assert(value,"Please set env var SMPI_GLOBAL_SIZE to the expected number of processes.");
204 return xbt_str_parse_int(value, "SMPI_GLOBAL_SIZE contains a non-numerical value: %s");
207 smpi_process_data_t smpi_process_data()
209 simdata_process_t simdata = static_cast<simdata_process_t>(SIMIX_process_self_get_data());
210 return static_cast<smpi_process_data_t>(simdata->data);
213 smpi_process_data_t smpi_process_remote_data(int index)
215 return process_data[index_to_process_data[index]];
218 void smpi_process_set_user_data(void *data)
220 smpi_process_data_t process_data = smpi_process_data();
221 process_data->data = data;
224 void *smpi_process_get_user_data()
226 smpi_process_data_t process_data = smpi_process_data();
227 return process_data->data;
230 int smpi_process_count()
232 return process_count;
236 * \brief Returns a structure that stores the location (filename + linenumber)
237 * of the last calls to MPI_* functions.
239 * \see smpi_trace_set_call_location
241 smpi_trace_call_location_t* smpi_process_get_call_location()
243 smpi_process_data_t process_data = smpi_process_data();
244 return process_data->trace_call_loc;
247 int smpi_process_index()
249 smpi_process_data_t data = smpi_process_data();
250 //return -1 if not initialized
251 return data != nullptr ? data->index : MPI_UNDEFINED;
254 MPI_Comm smpi_process_comm_world()
256 smpi_process_data_t data = smpi_process_data();
257 //return MPI_COMM_NULL if not initialized
258 return data != nullptr ? *data->comm_world : MPI_COMM_NULL;
261 smx_mailbox_t smpi_process_mailbox()
263 smpi_process_data_t data = smpi_process_data();
264 return data->mailbox;
267 smx_mailbox_t smpi_process_mailbox_small()
269 smpi_process_data_t data = smpi_process_data();
270 return data->mailbox_small;
273 xbt_mutex_t smpi_process_mailboxes_mutex()
275 smpi_process_data_t data = smpi_process_data();
276 return data->mailboxes_mutex;
279 smx_mailbox_t smpi_process_remote_mailbox(int index)
281 smpi_process_data_t data = smpi_process_remote_data(index);
282 return data->mailbox;
285 smx_mailbox_t smpi_process_remote_mailbox_small(int index)
287 smpi_process_data_t data = smpi_process_remote_data(index);
288 return data->mailbox_small;
291 xbt_mutex_t smpi_process_remote_mailboxes_mutex(int index)
293 smpi_process_data_t data = smpi_process_remote_data(index);
294 return data->mailboxes_mutex;
297 xbt_os_timer_t smpi_process_timer()
299 smpi_process_data_t data = smpi_process_data();
303 void smpi_process_simulated_start()
305 smpi_process_data_t data = smpi_process_data();
306 data->simulated = SIMIX_get_clock();
309 double smpi_process_simulated_elapsed()
311 smpi_process_data_t data = smpi_process_data();
312 return SIMIX_get_clock() - data->simulated;
315 MPI_Comm smpi_process_comm_self()
317 smpi_process_data_t data = smpi_process_data();
318 if(data->comm_self==MPI_COMM_NULL){
319 MPI_Group group = smpi_group_new(1);
320 data->comm_self = smpi_comm_new(group, nullptr);
321 smpi_group_set_mapping(group, smpi_process_index(), 0);
324 return data->comm_self;
327 MPI_Comm smpi_process_get_comm_intra()
329 smpi_process_data_t data = smpi_process_data();
330 return data->comm_intra;
333 void smpi_process_set_comm_intra(MPI_Comm comm)
335 smpi_process_data_t data = smpi_process_data();
336 data->comm_intra = comm;
339 void smpi_process_set_sampling(int s)
341 smpi_process_data_t data = smpi_process_data();
345 int smpi_process_get_sampling()
347 smpi_process_data_t data = smpi_process_data();
348 return data->sampling;
351 void print_request(const char *message, MPI_Request request)
353 XBT_VERB("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
354 message, request, request->buf, request->size, request->src, request->dst, request->tag, request->flags);
357 void smpi_comm_copy_buffer_callback(smx_synchro_t synchro, void *buff, size_t buff_size)
359 XBT_DEBUG("Copy the data over");
361 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(synchro);
363 if((smpi_privatize_global_variables) && (static_cast<char*>(buff) >= smpi_start_data_exe)
364 && (static_cast<char*>(buff) < smpi_start_data_exe + smpi_size_data_exe )
366 XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !");
369 smpi_switch_data_segment((static_cast<smpi_process_data_t>((static_cast<simdata_process_t>(SIMIX_process_get_data(comm->src_proc))->data))->index));
370 tmpbuff = static_cast<void*>(xbt_malloc(buff_size));
371 memcpy(tmpbuff, buff, buff_size);
374 if((smpi_privatize_global_variables) && ((char*)comm->dst_buff >= smpi_start_data_exe)
375 && ((char*)comm->dst_buff < smpi_start_data_exe + smpi_size_data_exe )){
376 XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment");
377 smpi_switch_data_segment((static_cast<smpi_process_data_t>((static_cast<simdata_process_t>(SIMIX_process_get_data(comm->dst_proc))->data))->index));
380 memcpy(comm->dst_buff, tmpbuff, buff_size);
381 if (comm->detached) {
382 // if this is a detached send, the source buffer was duplicated by SMPI
383 // sender to make the original buffer available to the application ASAP
385 //It seems that the request is used after the call there this should be free somewhere else but where???
386 //xbt_free(comm->comm.src_data);// inside SMPI the request is kept inside the user data and should be free
387 comm->src_buff = nullptr;
390 if(tmpbuff!=buff)xbt_free(tmpbuff);
393 void smpi_comm_null_copy_buffer_callback(smx_synchro_t comm, void *buff, size_t buff_size)
398 static void smpi_check_options(){
399 //check correctness of MPI parameters
401 xbt_assert(xbt_cfg_get_int("smpi/async-small-thresh") <= xbt_cfg_get_int("smpi/send-is-detached-thresh"));
403 if (xbt_cfg_is_default_value("smpi/running-power")) {
404 XBT_INFO("You did not set the power of the host running the simulation. "
405 "The timings will certainly not be accurate. "
406 "Use the option \"--cfg=smpi/running-power:<flops>\" to set its value."
407 "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information.");
412 return process_data != nullptr;
415 void smpi_global_init()
419 char name[MAILBOX_NAME_MAXLEN];
422 if (!MC_is_active()) {
423 global_timer = xbt_os_timer_new();
424 xbt_os_walltimer_start(global_timer);
427 if (xbt_cfg_get_string("smpi/comp-adjustment-file")[0] != '\0') {
428 std::string filename {xbt_cfg_get_string("smpi/comp-adjustment-file")};
429 std::ifstream fstream(filename);
430 if (!fstream.is_open()) {
431 xbt_die("Could not open file %s. Does it exist?", filename.c_str());
435 typedef boost::tokenizer< boost::escaped_list_separator<char>> Tokenizer;
436 std::getline(fstream, line); // Skip the header line
437 while (std::getline(fstream, line)) {
439 Tokenizer::iterator it = tok.begin();
440 Tokenizer::iterator end = std::next(tok.begin());
442 std::string location = *it;
443 boost::trim(location);
444 location2speedup.insert(std::pair<std::string, double>(location, std::stod(*end)));
448 if (process_count == 0){
449 process_count = SIMIX_process_count();
452 smpi_universe_size = process_count;
453 process_data = xbt_new0(smpi_process_data_t, process_count);
454 for (i = 0; i < process_count; i++) {
455 process_data[i] = xbt_new(s_smpi_process_data_t, 1);
456 process_data[i]->argc = nullptr;
457 process_data[i]->argv = nullptr;
458 process_data[i]->mailbox = simcall_mbox_create(get_mailbox_name(name, i));
459 process_data[i]->mailbox_small = simcall_mbox_create(get_mailbox_name_small(name, i));
460 process_data[i]->mailboxes_mutex = xbt_mutex_init();
461 process_data[i]->timer = xbt_os_timer_new();
463 MC_ignore_heap(process_data[i]->timer, xbt_os_timer_size());
464 process_data[i]->comm_self = MPI_COMM_NULL;
465 process_data[i]->comm_intra = MPI_COMM_NULL;
466 process_data[i]->comm_world = nullptr;
467 process_data[i]->state = SMPI_UNINITIALIZED;
468 process_data[i]->sampling = 0;
469 process_data[i]->finalization_barrier = nullptr;
470 process_data[i]->return_value = 0;
472 if (xbt_cfg_get_boolean("smpi/trace-call-location")) {
473 process_data[i]->trace_call_loc = xbt_new(smpi_trace_call_location_t, 1);
476 //if the process was launched through smpirun script we generate a global mpi_comm_world
477 //if not, we let MPI_COMM_NULL, and the comm world will be private to each mpi instance
479 group = smpi_group_new(process_count);
480 MPI_COMM_WORLD = smpi_comm_new(group, nullptr);
481 MPI_Attr_put(MPI_COMM_WORLD, MPI_UNIVERSE_SIZE, reinterpret_cast<void *>(process_count));
482 xbt_bar_t bar=xbt_barrier_init(process_count);
484 for (i = 0; i < process_count; i++) {
485 smpi_group_set_mapping(group, i, i);
486 process_data[i]->finalization_barrier = bar;
491 void smpi_global_destroy()
493 int count = smpi_process_count();
496 smpi_bench_destroy();
497 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
498 while (smpi_group_unuse(smpi_comm_group(MPI_COMM_WORLD)) > 0);
499 xbt_barrier_destroy(process_data[0]->finalization_barrier);
501 smpi_deployment_cleanup_instances();
503 for (i = 0; i < count; i++) {
504 if(process_data[i]->comm_self!=MPI_COMM_NULL){
505 smpi_comm_destroy(process_data[i]->comm_self);
507 if(process_data[i]->comm_intra!=MPI_COMM_NULL){
508 smpi_comm_destroy(process_data[i]->comm_intra);
510 xbt_os_timer_free(process_data[i]->timer);
511 xbt_mutex_destroy(process_data[i]->mailboxes_mutex);
512 if (xbt_cfg_get_boolean("smpi/trace-call-location")) {
513 xbt_free(process_data[i]->trace_call_loc);
515 xbt_free(process_data[i]);
517 xbt_free(process_data);
518 process_data = nullptr;
520 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
521 smpi_comm_cleanup_smp(MPI_COMM_WORLD);
522 smpi_comm_cleanup_attributes(MPI_COMM_WORLD);
523 if(smpi_coll_cleanup_callback!=nullptr)
524 smpi_coll_cleanup_callback();
525 xbt_free(MPI_COMM_WORLD);
528 MPI_COMM_WORLD = MPI_COMM_NULL;
530 if (!MC_is_active()) {
531 xbt_os_timer_free(global_timer);
534 xbt_free(index_to_process_data);
535 if(smpi_privatize_global_variables)
536 smpi_destroy_global_memory_segments();
542 void __attribute__ ((weak)) user_main_()
544 xbt_die("Should not be in this smpi_simulated_main");
548 int __attribute__ ((weak)) smpi_simulated_main_(int argc, char **argv)
550 smpi_process_init(&argc, &argv);
555 inline static int smpi_main_wrapper(int argc, char **argv){
556 int ret = smpi_simulated_main_(argc,argv);
558 XBT_WARN("SMPI process did not return 0. Return value : %d", ret);
559 smpi_process_data()->return_value=ret;
564 int __attribute__ ((weak)) main(int argc, char **argv)
566 return smpi_main(smpi_main_wrapper, argc, argv);
572 static void smpi_init_logs(){
574 /* Connect log categories. See xbt/log.c */
576 XBT_LOG_CONNECT(smpi); /* Keep this line as soon as possible in this function: xbt_log_appender_file.c depends on it
577 DO NOT connect this in XBT or so, or it will be useless to xbt_log_appender_file.c */
578 XBT_LOG_CONNECT(instr_smpi);
579 XBT_LOG_CONNECT(smpi_base);
580 XBT_LOG_CONNECT(smpi_bench);
581 XBT_LOG_CONNECT(smpi_coll);
582 XBT_LOG_CONNECT(smpi_colls);
583 XBT_LOG_CONNECT(smpi_comm);
584 XBT_LOG_CONNECT(smpi_dvfs);
585 XBT_LOG_CONNECT(smpi_group);
586 XBT_LOG_CONNECT(smpi_kernel);
587 XBT_LOG_CONNECT(smpi_mpi);
588 XBT_LOG_CONNECT(smpi_mpi_dt);
589 XBT_LOG_CONNECT(smpi_pmpi);
590 XBT_LOG_CONNECT(smpi_replay);
591 XBT_LOG_CONNECT(smpi_rma);
595 static void smpi_init_options(){
596 int gather_id = find_coll_description(mpi_coll_gather_description, xbt_cfg_get_string("smpi/gather"),"gather");
597 mpi_coll_gather_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, int, MPI_Comm)>
598 (mpi_coll_gather_description[gather_id].coll);
600 int allgather_id = find_coll_description(mpi_coll_allgather_description,
601 xbt_cfg_get_string("smpi/allgather"),"allgather");
602 mpi_coll_allgather_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm)>
603 (mpi_coll_allgather_description[allgather_id].coll);
605 int allgatherv_id = find_coll_description(mpi_coll_allgatherv_description,
606 xbt_cfg_get_string("smpi/allgatherv"),"allgatherv");
607 mpi_coll_allgatherv_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm)>
608 (mpi_coll_allgatherv_description[allgatherv_id].coll);
610 int allreduce_id = find_coll_description(mpi_coll_allreduce_description,
611 xbt_cfg_get_string("smpi/allreduce"),"allreduce");
612 mpi_coll_allreduce_fun = reinterpret_cast<int (*)(void *sbuf, void *rbuf, int rcount, MPI_Datatype dtype, MPI_Op op, MPI_Comm comm)>
613 (mpi_coll_allreduce_description[allreduce_id].coll);
615 int alltoall_id = find_coll_description(mpi_coll_alltoall_description,
616 xbt_cfg_get_string("smpi/alltoall"),"alltoall");
617 mpi_coll_alltoall_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm)>
618 (mpi_coll_alltoall_description[alltoall_id].coll);
620 int alltoallv_id = find_coll_description(mpi_coll_alltoallv_description,
621 xbt_cfg_get_string("smpi/alltoallv"),"alltoallv");
622 mpi_coll_alltoallv_fun = reinterpret_cast<int (*)(void *, int *, int *, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm)>
623 (mpi_coll_alltoallv_description[alltoallv_id].coll);
625 int bcast_id = find_coll_description(mpi_coll_bcast_description, xbt_cfg_get_string("smpi/bcast"),"bcast");
626 mpi_coll_bcast_fun = reinterpret_cast<int (*)(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm com)>
627 (mpi_coll_bcast_description[bcast_id].coll);
629 int reduce_id = find_coll_description(mpi_coll_reduce_description, xbt_cfg_get_string("smpi/reduce"),"reduce");
630 mpi_coll_reduce_fun = reinterpret_cast<int (*)(void *buf, void *rbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm)>
631 (mpi_coll_reduce_description[reduce_id].coll);
633 int reduce_scatter_id =
634 find_coll_description(mpi_coll_reduce_scatter_description,
635 xbt_cfg_get_string("smpi/reduce-scatter"),"reduce_scatter");
636 mpi_coll_reduce_scatter_fun = reinterpret_cast<int (*)(void *sbuf, void *rbuf, int *rcounts,MPI_Datatype dtype, MPI_Op op, MPI_Comm comm)>
637 (mpi_coll_reduce_scatter_description[reduce_scatter_id].coll);
639 int scatter_id = find_coll_description(mpi_coll_scatter_description, xbt_cfg_get_string("smpi/scatter"),"scatter");
640 mpi_coll_scatter_fun = reinterpret_cast<int (*)(void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf,int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm)>
641 (mpi_coll_scatter_description[scatter_id].coll);
643 int barrier_id = find_coll_description(mpi_coll_barrier_description, xbt_cfg_get_string("smpi/barrier"),"barrier");
644 mpi_coll_barrier_fun = reinterpret_cast<int (*)(MPI_Comm comm)>
645 (mpi_coll_barrier_description[barrier_id].coll);
647 smpi_coll_cleanup_callback=nullptr;
648 smpi_cpu_threshold = xbt_cfg_get_double("smpi/cpu-threshold");
649 smpi_running_power = xbt_cfg_get_double("smpi/running-power");
650 smpi_privatize_global_variables = xbt_cfg_get_boolean("smpi/privatize-global-variables");
651 if (smpi_cpu_threshold < 0)
652 smpi_cpu_threshold = DBL_MAX;
655 int smpi_main(int (*realmain) (int argc, char *argv[]), int argc, char *argv[])
657 srand(SMPI_RAND_SEED);
659 if (getenv("SMPI_PRETEND_CC") != nullptr) {
660 /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the
661 * configuration tools */
666 TRACE_global_init(&argc, argv);
667 TRACE_add_start_function(TRACE_smpi_alloc);
668 TRACE_add_end_function(TRACE_smpi_release);
670 SIMIX_global_init(&argc, argv);
671 MSG_init(&argc,argv);
673 SMPI_switch_data_segment = smpi_switch_data_segment;
677 // parse the platform file: get the host list
678 SIMIX_create_environment(argv[1]);
679 SIMIX_comm_set_copy_data_callback(&smpi_comm_copy_buffer_callback);
680 SIMIX_function_register_default(realmain);
681 SIMIX_launch_application(argv[2]);
685 smpi_check_options();
687 if(smpi_privatize_global_variables)
688 smpi_initialize_global_memory_segments();
690 /* Clean IO before the run */
694 if (MC_is_active()) {
700 xbt_os_walltimer_stop(global_timer);
701 if (xbt_cfg_get_boolean("smpi/display-timing")){
702 double global_time = xbt_os_timer_elapsed(global_timer);
703 XBT_INFO("Simulated time: %g seconds. \n\n"
704 "The simulation took %g seconds (after parsing and platform setup)\n"
705 "%g seconds were actual computation of the application",
706 SIMIX_get_clock(), global_time , smpi_total_benched_time);
708 if (smpi_total_benched_time/global_time>=0.75)
709 XBT_INFO("More than 75%% of the time was spent inside the application code.\n"
710 "You may want to use sampling functions or trace replay to reduce this.");
713 int count = smpi_process_count();
715 for (i = 0; i < count; i++) {
716 if(process_data[i]->return_value!=0){
717 ret=process_data[i]->return_value;//return first non 0 value
721 smpi_global_destroy();
728 // This function can be called from extern file, to initialize logs, options, and processes of smpi
729 // without the need of smpirun
734 smpi_check_options();
735 if (TRACE_is_enabled() && TRACE_is_configured())
737 if(smpi_privatize_global_variables)
738 smpi_initialize_global_memory_segments();
741 void SMPI_finalize(){
742 smpi_global_destroy();