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::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 int 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 = NULL;
56 int process_count = 0;
57 int smpi_universe_size = 0;
58 int* index_to_process_data = NULL;
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 = NULL;
63 MPI_Errhandler *MPI_ERRORS_ARE_FATAL = NULL;
64 MPI_Errhandler *MPI_ERRHANDLER_NULL = NULL;
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", (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", (int) (sizeof(int) * 2), index);
80 void smpi_process_init(int *argc, char ***argv)
83 smpi_process_data_t data;
87 proc = SIMIX_process_self();
88 //FIXME: dirty cleanup method to avoid using msg cleanup functions on these processes when using MSG+SMPI
89 SIMIX_process_set_cleanup_function(proc, MSG_process_cleanup_from_SIMIX);
90 char* instance_id = (*argv)[1];
91 int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
92 index = smpi_process_index_of_smx_process(proc);
94 if(!index_to_process_data){
95 index_to_process_data=(int*)xbt_malloc(SIMIX_process_count()*sizeof(int));
98 if(smpi_privatize_global_variables){
99 /* Now using segment index of the process */
100 index = proc->segment_index;
101 /* Done at the process's creation */
102 SMPI_switch_data_segment(index);
105 MPI_Comm* temp_comm_world;
107 smpi_deployment_register_process(instance_id, rank, index, &temp_comm_world, &temp_bar);
108 data = smpi_process_remote_data(index);
109 data->comm_world = temp_comm_world;
110 if(temp_bar != NULL) data->finalization_barrier = temp_bar;
112 data->instance_id = instance_id;
114 //xbt_free(simcall_process_get_data(proc));
116 simdata_process_t simdata = static_cast<simdata_process_t>(simcall_process_get_data(proc));
117 simdata->data = data;
121 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
122 (*argv)[(*argc) - 1] = NULL;
123 (*argv)[(*argc) - 2] = NULL;
128 // set the process attached to the mailbox
129 simcall_mbox_set_receiver(data->mailbox_small, proc);
130 XBT_DEBUG("<%d> New process in the game: %p", index, proc);
132 xbt_assert(smpi_process_data(),
133 "smpi_process_data() returned NULL. You probably gave a NULL parameter to MPI_Init. Although it's required by "
134 "MPI-2, this is currently not supported by SMPI.");
137 void smpi_process_destroy(void)
139 int index = smpi_process_index();
140 if(smpi_privatize_global_variables){
141 smpi_switch_data_segment(index);
143 process_data[index_to_process_data[index]]->state = SMPI_FINALIZED;
144 XBT_DEBUG("<%d> Process left the game", index);
147 /** @brief Prepares the current process for termination. */
148 void smpi_process_finalize(void)
150 // This leads to an explosion of the search graph which cannot be reduced:
151 if(MC_is_active() || MC_record_replay_is_active())
154 int index = smpi_process_index();
155 // wait for all pending asynchronous comms to finish
156 xbt_barrier_wait(process_data[index_to_process_data[index]]->finalization_barrier);
159 /** @brief Check if a process is finalized */
160 int smpi_process_finalized()
162 int index = smpi_process_index();
163 if (index != MPI_UNDEFINED)
164 return (process_data[index_to_process_data[index]]->state == SMPI_FINALIZED);
169 /** @brief Check if a process is initialized */
170 int smpi_process_initialized(void)
172 if (!index_to_process_data){
175 int index = smpi_process_index();
176 return ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state == SMPI_INITIALIZED));
180 /** @brief Mark a process as initialized (=MPI_Init called) */
181 void smpi_process_mark_as_initialized(void)
183 int index = smpi_process_index();
184 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
185 process_data[index_to_process_data[index]]->state = SMPI_INITIALIZED;
188 void smpi_process_set_replaying(int value){
189 int index = smpi_process_index();
190 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
191 process_data[index_to_process_data[index]]->replaying = value;
194 int smpi_process_get_replaying(){
195 int index = smpi_process_index();
196 if (index != MPI_UNDEFINED)
197 return process_data[index_to_process_data[index]]->replaying;
198 else return _xbt_replay_is_active();
201 int smpi_global_size(void)
203 char *value = getenv("SMPI_GLOBAL_SIZE");
204 xbt_assert(value,"Please set env var SMPI_GLOBAL_SIZE to the expected number of processes.");
206 return xbt_str_parse_int(value, "SMPI_GLOBAL_SIZE contains a non-numerical value: %s");
209 smpi_process_data_t smpi_process_data(void)
211 simdata_process_t simdata = static_cast<simdata_process_t>(SIMIX_process_self_get_data());
212 return static_cast<smpi_process_data_t>(simdata->data);
215 smpi_process_data_t smpi_process_remote_data(int index)
217 return process_data[index_to_process_data[index]];
220 void smpi_process_set_user_data(void *data)
222 smpi_process_data_t process_data = smpi_process_data();
223 process_data->data = data;
226 void *smpi_process_get_user_data()
228 smpi_process_data_t process_data = smpi_process_data();
229 return process_data->data;
232 int smpi_process_count(void)
234 return process_count;
238 * \brief Returns a structure that stores the location (filename + linenumber)
239 * of the last calls to MPI_* functions.
241 * \see smpi_trace_set_call_location
243 smpi_trace_call_location_t* smpi_process_get_call_location(void)
245 smpi_process_data_t process_data = smpi_process_data();
246 return process_data->trace_call_loc;
249 int smpi_process_index(void)
251 smpi_process_data_t data = smpi_process_data();
252 //return -1 if not initialized
253 return data ? data->index : MPI_UNDEFINED;
256 MPI_Comm smpi_process_comm_world(void)
258 smpi_process_data_t data = smpi_process_data();
259 //return MPI_COMM_NULL if not initialized
260 return data ? *data->comm_world : MPI_COMM_NULL;
263 smx_mailbox_t smpi_process_mailbox(void)
265 smpi_process_data_t data = smpi_process_data();
266 return data->mailbox;
269 smx_mailbox_t smpi_process_mailbox_small(void)
271 smpi_process_data_t data = smpi_process_data();
272 return data->mailbox_small;
275 xbt_mutex_t smpi_process_mailboxes_mutex(void)
277 smpi_process_data_t data = smpi_process_data();
278 return data->mailboxes_mutex;
281 smx_mailbox_t smpi_process_remote_mailbox(int index)
283 smpi_process_data_t data = smpi_process_remote_data(index);
284 return data->mailbox;
287 smx_mailbox_t smpi_process_remote_mailbox_small(int index)
289 smpi_process_data_t data = smpi_process_remote_data(index);
290 return data->mailbox_small;
293 xbt_mutex_t smpi_process_remote_mailboxes_mutex(int index)
295 smpi_process_data_t data = smpi_process_remote_data(index);
296 return data->mailboxes_mutex;
299 xbt_os_timer_t smpi_process_timer(void)
301 smpi_process_data_t data = smpi_process_data();
305 void smpi_process_simulated_start(void)
307 smpi_process_data_t data = smpi_process_data();
308 data->simulated = SIMIX_get_clock();
311 double smpi_process_simulated_elapsed(void)
313 smpi_process_data_t data = smpi_process_data();
314 return SIMIX_get_clock() - data->simulated;
317 MPI_Comm smpi_process_comm_self(void)
319 smpi_process_data_t data = smpi_process_data();
320 if(data->comm_self==MPI_COMM_NULL){
321 MPI_Group group = smpi_group_new(1);
322 data->comm_self = smpi_comm_new(group, NULL);
323 smpi_group_set_mapping(group, smpi_process_index(), 0);
326 return data->comm_self;
329 MPI_Comm smpi_process_get_comm_intra(void)
331 smpi_process_data_t data = smpi_process_data();
332 return data->comm_intra;
335 void smpi_process_set_comm_intra(MPI_Comm comm)
337 smpi_process_data_t data = smpi_process_data();
338 data->comm_intra = comm;
341 void smpi_process_set_sampling(int s)
343 smpi_process_data_t data = smpi_process_data();
347 int smpi_process_get_sampling(void)
349 smpi_process_data_t data = smpi_process_data();
350 return data->sampling;
353 void print_request(const char *message, MPI_Request request)
355 XBT_VERB("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
356 message, request, request->buf, request->size, request->src, request->dst, request->tag, request->flags);
359 void smpi_comm_copy_buffer_callback(smx_synchro_t synchro, void *buff, size_t buff_size)
361 XBT_DEBUG("Copy the data over");
363 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(synchro);
365 if((smpi_privatize_global_variables) && ((char*)buff >= smpi_start_data_exe)
366 && ((char*)buff < smpi_start_data_exe + smpi_size_data_exe )
368 XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !");
371 smpi_switch_data_segment(((smpi_process_data_t)(((simdata_process_t)SIMIX_process_get_data(comm->src_proc))->data))->index);
372 tmpbuff = (void*)xbt_malloc(buff_size);
373 memcpy(tmpbuff, buff, buff_size);
376 if((smpi_privatize_global_variables) && ((char*)comm->dst_buff >= smpi_start_data_exe)
377 && ((char*)comm->dst_buff < smpi_start_data_exe + smpi_size_data_exe )){
378 XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment");
379 smpi_switch_data_segment(((smpi_process_data_t)(((simdata_process_t)SIMIX_process_get_data(comm->dst_proc))->data))->index);
382 memcpy(comm->dst_buff, tmpbuff, buff_size);
383 if (comm->detached) {
384 // if this is a detached send, the source buffer was duplicated by SMPI
385 // sender to make the original buffer available to the application ASAP
387 //It seems that the request is used after the call there this should be free somewhere else but where???
388 //xbt_free(comm->comm.src_data);// inside SMPI the request is kept inside the user data and should be free
389 comm->src_buff = NULL;
392 if(tmpbuff!=buff)xbt_free(tmpbuff);
395 void smpi_comm_null_copy_buffer_callback(smx_synchro_t comm, void *buff, size_t buff_size)
400 static void smpi_check_options(){
401 //check correctness of MPI parameters
403 xbt_assert(xbt_cfg_get_int("smpi/async-small-thresh") <= xbt_cfg_get_int("smpi/send-is-detached-thresh"));
405 if (xbt_cfg_is_default_value("smpi/running-power")) {
406 XBT_INFO("You did not set the power of the host running the simulation. "
407 "The timings will certainly not be accurate. "
408 "Use the option \"--cfg=smpi/running-power:<flops>\" to set its value."
409 "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information.");
413 int smpi_enabled(void) {
414 return process_data != NULL;
417 void smpi_global_init(void)
421 char name[MAILBOX_NAME_MAXLEN];
424 if (!MC_is_active()) {
425 global_timer = xbt_os_timer_new();
426 xbt_os_walltimer_start(global_timer);
429 if (xbt_cfg_get_string("smpi/comp-adjustment-file")[0] != '\0') {
430 std::string filename {xbt_cfg_get_string("smpi/comp-adjustment-file")};
431 std::ifstream fstream(filename);
432 if (!fstream.is_open()) {
433 xbt_die("Could not open file %s. Does it exist?", filename.c_str());
437 typedef boost::tokenizer< boost::escaped_list_separator<char>> Tokenizer;
438 std::getline(fstream, line); // Skip the header line
439 while (std::getline(fstream, line)) {
441 Tokenizer::iterator it = tok.begin();
442 Tokenizer::iterator end = std::next(tok.begin());
444 std::string location = *it;
445 boost::trim(location);
446 location2speedup.insert(std::pair<std::string, double>(location, std::stod(*end)));
450 if (process_count == 0){
451 process_count = SIMIX_process_count();
454 smpi_universe_size = process_count;
455 process_data = xbt_new0(smpi_process_data_t, process_count);
456 for (i = 0; i < process_count; i++) {
457 process_data[i] = xbt_new(s_smpi_process_data_t, 1);
458 //process_data[i]->index = i;
459 process_data[i]->argc = NULL;
460 process_data[i]->argv = NULL;
461 process_data[i]->mailbox = simcall_mbox_create(get_mailbox_name(name, i));
462 process_data[i]->mailbox_small = simcall_mbox_create(get_mailbox_name_small(name, i));
463 process_data[i]->mailboxes_mutex = xbt_mutex_init();
464 process_data[i]->timer = xbt_os_timer_new();
466 MC_ignore_heap(process_data[i]->timer, xbt_os_timer_size());
467 process_data[i]->comm_self = MPI_COMM_NULL;
468 process_data[i]->comm_intra = MPI_COMM_NULL;
469 process_data[i]->comm_world = NULL;
470 process_data[i]->state = SMPI_UNINITIALIZED;
471 process_data[i]->sampling = 0;
472 process_data[i]->finalization_barrier = NULL;
473 process_data[i]->return_value = 0;
474 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, NULL);
481 MPI_Attr_put(MPI_COMM_WORLD, MPI_UNIVERSE_SIZE, (void *)(MPI_Aint)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(void)
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 xbt_free(process_data[i]);
514 xbt_free(process_data);
517 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
518 smpi_comm_cleanup_smp(MPI_COMM_WORLD);
519 smpi_comm_cleanup_attributes(MPI_COMM_WORLD);
520 if(smpi_coll_cleanup_callback!=NULL)
521 smpi_coll_cleanup_callback();
522 xbt_free(MPI_COMM_WORLD);
525 MPI_COMM_WORLD = MPI_COMM_NULL;
527 if (!MC_is_active()) {
528 xbt_os_timer_free(global_timer);
531 xbt_free(index_to_process_data);
532 if(smpi_privatize_global_variables)
533 smpi_destroy_global_memory_segments();
539 void __attribute__ ((weak)) user_main_()
541 xbt_die("Should not be in this smpi_simulated_main");
545 int __attribute__ ((weak)) smpi_simulated_main_(int argc, char **argv)
547 smpi_process_init(&argc, &argv);
552 inline static int smpi_main_wrapper(int argc, char **argv){
553 int ret = smpi_simulated_main_(argc,argv);
555 XBT_WARN("SMPI process did not return 0. Return value : %d", ret);
556 smpi_process_data()->return_value=ret;
561 int __attribute__ ((weak)) main(int argc, char **argv)
563 return smpi_main(smpi_main_wrapper, argc, argv);
569 static void smpi_init_logs(){
571 /* Connect log categories. See xbt/log.c */
573 XBT_LOG_CONNECT(smpi); /* Keep this line as soon as possible in this function: xbt_log_appender_file.c depends on it
574 DO NOT connect this in XBT or so, or it will be useless to xbt_log_appender_file.c */
575 XBT_LOG_CONNECT(instr_smpi);
576 XBT_LOG_CONNECT(smpi_base);
577 XBT_LOG_CONNECT(smpi_bench);
578 XBT_LOG_CONNECT(smpi_coll);
579 XBT_LOG_CONNECT(smpi_colls);
580 XBT_LOG_CONNECT(smpi_comm);
581 XBT_LOG_CONNECT(smpi_dvfs);
582 XBT_LOG_CONNECT(smpi_group);
583 XBT_LOG_CONNECT(smpi_kernel);
584 XBT_LOG_CONNECT(smpi_mpi);
585 XBT_LOG_CONNECT(smpi_mpi_dt);
586 XBT_LOG_CONNECT(smpi_pmpi);
587 XBT_LOG_CONNECT(smpi_replay);
588 XBT_LOG_CONNECT(smpi_rma);
592 static void smpi_init_options(){
593 int gather_id = find_coll_description(mpi_coll_gather_description, xbt_cfg_get_string("smpi/gather"),"gather");
594 mpi_coll_gather_fun = (int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, int, MPI_Comm))
595 mpi_coll_gather_description[gather_id].coll;
597 int allgather_id = find_coll_description(mpi_coll_allgather_description,
598 xbt_cfg_get_string("smpi/allgather"),"allgather");
599 mpi_coll_allgather_fun = (int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm))
600 mpi_coll_allgather_description[allgather_id].coll;
602 int allgatherv_id = find_coll_description(mpi_coll_allgatherv_description,
603 xbt_cfg_get_string("smpi/allgatherv"),"allgatherv");
604 mpi_coll_allgatherv_fun = (int (*)(void *, int, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm))
605 mpi_coll_allgatherv_description[allgatherv_id].coll;
607 int allreduce_id = find_coll_description(mpi_coll_allreduce_description,
608 xbt_cfg_get_string("smpi/allreduce"),"allreduce");
609 mpi_coll_allreduce_fun = (int (*)(void *sbuf, void *rbuf, int rcount, MPI_Datatype dtype, MPI_Op op, MPI_Comm comm))
610 mpi_coll_allreduce_description[allreduce_id].coll;
612 int alltoall_id = find_coll_description(mpi_coll_alltoall_description,
613 xbt_cfg_get_string("smpi/alltoall"),"alltoall");
614 mpi_coll_alltoall_fun = (int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm))
615 mpi_coll_alltoall_description[alltoall_id].coll;
617 int alltoallv_id = find_coll_description(mpi_coll_alltoallv_description,
618 xbt_cfg_get_string("smpi/alltoallv"),"alltoallv");
619 mpi_coll_alltoallv_fun = (int (*)(void *, int *, int *, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm))
620 mpi_coll_alltoallv_description[alltoallv_id].coll;
622 int bcast_id = find_coll_description(mpi_coll_bcast_description, xbt_cfg_get_string("smpi/bcast"),"bcast");
623 mpi_coll_bcast_fun = (int (*)(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm com))
624 mpi_coll_bcast_description[bcast_id].coll;
626 int reduce_id = find_coll_description(mpi_coll_reduce_description, xbt_cfg_get_string("smpi/reduce"),"reduce");
627 mpi_coll_reduce_fun = (int (*)(void *buf, void *rbuf, int count, MPI_Datatype datatype, MPI_Op op, int root,
628 MPI_Comm comm)) mpi_coll_reduce_description[reduce_id].coll;
630 int reduce_scatter_id =
631 find_coll_description(mpi_coll_reduce_scatter_description,
632 xbt_cfg_get_string("smpi/reduce-scatter"),"reduce_scatter");
633 mpi_coll_reduce_scatter_fun = (int (*)(void *sbuf, void *rbuf, int *rcounts,MPI_Datatype dtype, MPI_Op op,
634 MPI_Comm comm)) mpi_coll_reduce_scatter_description[reduce_scatter_id].coll;
636 int scatter_id = find_coll_description(mpi_coll_scatter_description, xbt_cfg_get_string("smpi/scatter"),"scatter");
637 mpi_coll_scatter_fun = (int (*)(void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf,
638 int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm))
639 mpi_coll_scatter_description[scatter_id].coll;
641 int barrier_id = find_coll_description(mpi_coll_barrier_description, xbt_cfg_get_string("smpi/barrier"),"barrier");
642 mpi_coll_barrier_fun = (int (*)(MPI_Comm comm)) mpi_coll_barrier_description[barrier_id].coll;
644 smpi_coll_cleanup_callback=NULL;
645 smpi_cpu_threshold = xbt_cfg_get_double("smpi/cpu-threshold");
646 smpi_running_power = xbt_cfg_get_double("smpi/running-power");
647 smpi_privatize_global_variables = xbt_cfg_get_boolean("smpi/privatize-global-variables");
648 if (smpi_cpu_threshold < 0)
649 smpi_cpu_threshold = DBL_MAX;
652 int smpi_main(int (*realmain) (int argc, char *argv[]), int argc, char *argv[])
654 srand(SMPI_RAND_SEED);
656 if (getenv("SMPI_PRETEND_CC") != NULL) {
657 /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the
658 * configuration tools */
663 TRACE_global_init(&argc, argv);
664 TRACE_add_start_function(TRACE_smpi_alloc);
665 TRACE_add_end_function(TRACE_smpi_release);
667 SIMIX_global_init(&argc, argv);
668 MSG_init(&argc,argv);
670 SMPI_switch_data_segment = smpi_switch_data_segment;
674 // parse the platform file: get the host list
675 SIMIX_create_environment(argv[1]);
676 SIMIX_comm_set_copy_data_callback(&smpi_comm_copy_buffer_callback);
677 SIMIX_function_register_default(realmain);
678 SIMIX_launch_application(argv[2]);
682 smpi_check_options();
684 if(smpi_privatize_global_variables)
685 smpi_initialize_global_memory_segments();
687 /* Clean IO before the run */
691 if (MC_is_active()) {
697 xbt_os_walltimer_stop(global_timer);
698 if (xbt_cfg_get_boolean("smpi/display-timing")){
699 double global_time = xbt_os_timer_elapsed(global_timer);
700 XBT_INFO("Simulated time: %g seconds. \n\n"
701 "The simulation took %g seconds (after parsing and platform setup)\n"
702 "%g seconds were actual computation of the application",
703 SIMIX_get_clock(), global_time , smpi_total_benched_time);
705 if (smpi_total_benched_time/global_time>=0.75)
706 XBT_INFO("More than 75%% of the time was spent inside the application code.\n"
707 "You may want to use sampling functions or trace replay to reduce this.");
710 int count = smpi_process_count();
712 for (i = 0; i < count; i++) {
713 if(process_data[i]->return_value!=0){
714 ret=process_data[i]->return_value;//return first non 0 value
718 smpi_global_destroy();
725 // This function can be called from extern file, to initialize logs, options, and processes of smpi
726 // without the need of smpirun
731 smpi_check_options();
732 if (TRACE_is_enabled() && TRACE_is_configured())
734 if(smpi_privatize_global_variables)
735 smpi_initialize_global_memory_segments();
738 void SMPI_finalize(){
739 smpi_global_destroy();