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;
120 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
121 (*argv)[(*argc) - 1] = nullptr;
122 (*argv)[(*argc) - 2] = nullptr;
127 // set the process attached to the mailbox
128 simcall_mbox_set_receiver(data->mailbox_small, proc);
129 XBT_DEBUG("<%d> New process in the game: %p", index, proc);
131 xbt_assert(smpi_process_data(),
132 "smpi_process_data() returned nullptr. You probably gave a nullptr parameter to MPI_Init. Although it's required by "
133 "MPI-2, this is currently not supported by SMPI.");
136 void smpi_process_destroy()
138 int index = smpi_process_index();
139 if(smpi_privatize_global_variables){
140 smpi_switch_data_segment(index);
142 process_data[index_to_process_data[index]]->state = SMPI_FINALIZED;
143 XBT_DEBUG("<%d> Process left the game", index);
146 /** @brief Prepares the current process for termination. */
147 void smpi_process_finalize()
149 // This leads to an explosion of the search graph which cannot be reduced:
150 if(MC_is_active() || MC_record_replay_is_active())
153 int index = smpi_process_index();
154 // wait for all pending asynchronous comms to finish
155 xbt_barrier_wait(process_data[index_to_process_data[index]]->finalization_barrier);
158 /** @brief Check if a process is finalized */
159 int smpi_process_finalized()
161 int index = smpi_process_index();
162 if (index != MPI_UNDEFINED)
163 return (process_data[index_to_process_data[index]]->state == SMPI_FINALIZED);
168 /** @brief Check if a process is initialized */
169 int smpi_process_initialized()
171 if (index_to_process_data == nullptr){
174 int index = smpi_process_index();
175 return ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state == SMPI_INITIALIZED));
179 /** @brief Mark a process as initialized (=MPI_Init called) */
180 void smpi_process_mark_as_initialized()
182 int index = smpi_process_index();
183 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
184 process_data[index_to_process_data[index]]->state = SMPI_INITIALIZED;
187 void smpi_process_set_replaying(bool value){
188 int index = smpi_process_index();
189 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
190 process_data[index_to_process_data[index]]->replaying = value;
193 bool smpi_process_get_replaying(){
194 int index = smpi_process_index();
195 if (index != MPI_UNDEFINED)
196 return process_data[index_to_process_data[index]]->replaying;
197 else return (_xbt_replay_is_active() != 0);
200 int smpi_global_size()
202 char *value = getenv("SMPI_GLOBAL_SIZE");
203 xbt_assert(value,"Please set env var SMPI_GLOBAL_SIZE to the expected number of processes.");
205 return xbt_str_parse_int(value, "SMPI_GLOBAL_SIZE contains a non-numerical value: %s");
208 smpi_process_data_t smpi_process_data()
210 simdata_process_t simdata = static_cast<simdata_process_t>(SIMIX_process_self_get_data());
211 return static_cast<smpi_process_data_t>(simdata->data);
214 smpi_process_data_t smpi_process_remote_data(int index)
216 return process_data[index_to_process_data[index]];
219 void smpi_process_set_user_data(void *data)
221 smpi_process_data_t process_data = smpi_process_data();
222 process_data->data = data;
225 void *smpi_process_get_user_data()
227 smpi_process_data_t process_data = smpi_process_data();
228 return process_data->data;
231 int smpi_process_count()
233 return process_count;
237 * \brief Returns a structure that stores the location (filename + linenumber)
238 * of the last calls to MPI_* functions.
240 * \see smpi_trace_set_call_location
242 smpi_trace_call_location_t* smpi_process_get_call_location()
244 smpi_process_data_t process_data = smpi_process_data();
245 return process_data->trace_call_loc;
248 int smpi_process_index()
250 smpi_process_data_t data = smpi_process_data();
251 //return -1 if not initialized
252 return data != nullptr ? data->index : MPI_UNDEFINED;
255 MPI_Comm smpi_process_comm_world()
257 smpi_process_data_t data = smpi_process_data();
258 //return MPI_COMM_NULL if not initialized
259 return data != nullptr ? *data->comm_world : MPI_COMM_NULL;
262 smx_mailbox_t smpi_process_mailbox()
264 smpi_process_data_t data = smpi_process_data();
265 return data->mailbox;
268 smx_mailbox_t smpi_process_mailbox_small()
270 smpi_process_data_t data = smpi_process_data();
271 return data->mailbox_small;
274 xbt_mutex_t smpi_process_mailboxes_mutex()
276 smpi_process_data_t data = smpi_process_data();
277 return data->mailboxes_mutex;
280 smx_mailbox_t smpi_process_remote_mailbox(int index)
282 smpi_process_data_t data = smpi_process_remote_data(index);
283 return data->mailbox;
286 smx_mailbox_t smpi_process_remote_mailbox_small(int index)
288 smpi_process_data_t data = smpi_process_remote_data(index);
289 return data->mailbox_small;
292 xbt_mutex_t smpi_process_remote_mailboxes_mutex(int index)
294 smpi_process_data_t data = smpi_process_remote_data(index);
295 return data->mailboxes_mutex;
298 xbt_os_timer_t smpi_process_timer()
300 smpi_process_data_t data = smpi_process_data();
304 void smpi_process_simulated_start()
306 smpi_process_data_t data = smpi_process_data();
307 data->simulated = SIMIX_get_clock();
310 double smpi_process_simulated_elapsed()
312 smpi_process_data_t data = smpi_process_data();
313 return SIMIX_get_clock() - data->simulated;
316 MPI_Comm smpi_process_comm_self()
318 smpi_process_data_t data = smpi_process_data();
319 if(data->comm_self==MPI_COMM_NULL){
320 MPI_Group group = smpi_group_new(1);
321 data->comm_self = smpi_comm_new(group, nullptr);
322 smpi_group_set_mapping(group, smpi_process_index(), 0);
325 return data->comm_self;
328 MPI_Comm smpi_process_get_comm_intra()
330 smpi_process_data_t data = smpi_process_data();
331 return data->comm_intra;
334 void smpi_process_set_comm_intra(MPI_Comm comm)
336 smpi_process_data_t data = smpi_process_data();
337 data->comm_intra = comm;
340 void smpi_process_set_sampling(int s)
342 smpi_process_data_t data = smpi_process_data();
346 int smpi_process_get_sampling()
348 smpi_process_data_t data = smpi_process_data();
349 return data->sampling;
352 void print_request(const char *message, MPI_Request request)
354 XBT_VERB("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
355 message, request, request->buf, request->size, request->src, request->dst, request->tag, request->flags);
358 void smpi_comm_copy_buffer_callback(smx_synchro_t synchro, void *buff, size_t buff_size)
360 XBT_DEBUG("Copy the data over");
362 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(synchro);
364 if((smpi_privatize_global_variables) && (static_cast<char*>(buff) >= smpi_start_data_exe)
365 && (static_cast<char*>(buff) < smpi_start_data_exe + smpi_size_data_exe )
367 XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !");
370 smpi_switch_data_segment((static_cast<smpi_process_data_t>((static_cast<simdata_process_t>(SIMIX_process_get_data(comm->src_proc))->data))->index));
371 tmpbuff = static_cast<void*>(xbt_malloc(buff_size));
372 memcpy(tmpbuff, buff, buff_size);
375 if((smpi_privatize_global_variables) && ((char*)comm->dst_buff >= smpi_start_data_exe)
376 && ((char*)comm->dst_buff < smpi_start_data_exe + smpi_size_data_exe )){
377 XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment");
378 smpi_switch_data_segment((static_cast<smpi_process_data_t>((static_cast<simdata_process_t>(SIMIX_process_get_data(comm->dst_proc))->data))->index));
381 memcpy(comm->dst_buff, tmpbuff, buff_size);
382 if (comm->detached) {
383 // if this is a detached send, the source buffer was duplicated by SMPI
384 // sender to make the original buffer available to the application ASAP
386 //It seems that the request is used after the call there this should be free somewhere else but where???
387 //xbt_free(comm->comm.src_data);// inside SMPI the request is kept inside the user data and should be free
388 comm->src_buff = nullptr;
391 if(tmpbuff!=buff)xbt_free(tmpbuff);
394 void smpi_comm_null_copy_buffer_callback(smx_synchro_t comm, void *buff, size_t buff_size)
399 static void smpi_check_options(){
400 //check correctness of MPI parameters
402 xbt_assert(xbt_cfg_get_int("smpi/async-small-thresh") <= xbt_cfg_get_int("smpi/send-is-detached-thresh"));
404 if (xbt_cfg_is_default_value("smpi/running-power")) {
405 XBT_INFO("You did not set the power of the host running the simulation. "
406 "The timings will certainly not be accurate. "
407 "Use the option \"--cfg=smpi/running-power:<flops>\" to set its value."
408 "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information.");
413 return process_data != nullptr;
416 void smpi_global_init()
420 char name[MAILBOX_NAME_MAXLEN];
423 if (!MC_is_active()) {
424 global_timer = xbt_os_timer_new();
425 xbt_os_walltimer_start(global_timer);
428 if (xbt_cfg_get_string("smpi/comp-adjustment-file")[0] != '\0') {
429 std::string filename {xbt_cfg_get_string("smpi/comp-adjustment-file")};
430 std::ifstream fstream(filename);
431 if (!fstream.is_open()) {
432 xbt_die("Could not open file %s. Does it exist?", filename.c_str());
436 typedef boost::tokenizer< boost::escaped_list_separator<char>> Tokenizer;
437 std::getline(fstream, line); // Skip the header line
438 while (std::getline(fstream, line)) {
440 Tokenizer::iterator it = tok.begin();
441 Tokenizer::iterator end = std::next(tok.begin());
443 std::string location = *it;
444 boost::trim(location);
445 location2speedup.insert(std::pair<std::string, double>(location, std::stod(*end)));
449 if (process_count == 0){
450 process_count = SIMIX_process_count();
453 smpi_universe_size = process_count;
454 process_data = xbt_new0(smpi_process_data_t, process_count);
455 for (i = 0; i < process_count; i++) {
456 process_data[i] = xbt_new(s_smpi_process_data_t, 1);
457 process_data[i]->argc = nullptr;
458 process_data[i]->argv = nullptr;
459 process_data[i]->mailbox = simcall_mbox_create(get_mailbox_name(name, i));
460 process_data[i]->mailbox_small = simcall_mbox_create(get_mailbox_name_small(name, i));
461 process_data[i]->mailboxes_mutex = xbt_mutex_init();
462 process_data[i]->timer = xbt_os_timer_new();
464 MC_ignore_heap(process_data[i]->timer, xbt_os_timer_size());
465 process_data[i]->comm_self = MPI_COMM_NULL;
466 process_data[i]->comm_intra = MPI_COMM_NULL;
467 process_data[i]->comm_world = nullptr;
468 process_data[i]->state = SMPI_UNINITIALIZED;
469 process_data[i]->sampling = 0;
470 process_data[i]->finalization_barrier = nullptr;
471 process_data[i]->return_value = 0;
473 if (xbt_cfg_get_boolean("smpi/trace-call-location")) {
474 process_data[i]->trace_call_loc = xbt_new(smpi_trace_call_location_t, 1);
477 //if the process was launched through smpirun script we generate a global mpi_comm_world
478 //if not, we let MPI_COMM_NULL, and the comm world will be private to each mpi instance
480 group = smpi_group_new(process_count);
481 MPI_COMM_WORLD = smpi_comm_new(group, nullptr);
482 MPI_Attr_put(MPI_COMM_WORLD, MPI_UNIVERSE_SIZE, reinterpret_cast<void *>(process_count));
483 xbt_bar_t bar=xbt_barrier_init(process_count);
485 for (i = 0; i < process_count; i++) {
486 smpi_group_set_mapping(group, i, i);
487 process_data[i]->finalization_barrier = bar;
492 void smpi_global_destroy()
494 int count = smpi_process_count();
497 smpi_bench_destroy();
498 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
499 while (smpi_group_unuse(smpi_comm_group(MPI_COMM_WORLD)) > 0);
500 xbt_barrier_destroy(process_data[0]->finalization_barrier);
502 smpi_deployment_cleanup_instances();
504 for (i = 0; i < count; i++) {
505 if(process_data[i]->comm_self!=MPI_COMM_NULL){
506 smpi_comm_destroy(process_data[i]->comm_self);
508 if(process_data[i]->comm_intra!=MPI_COMM_NULL){
509 smpi_comm_destroy(process_data[i]->comm_intra);
511 xbt_os_timer_free(process_data[i]->timer);
512 xbt_mutex_destroy(process_data[i]->mailboxes_mutex);
513 if (xbt_cfg_get_boolean("smpi/trace-call-location")) {
514 xbt_free(process_data[i]->trace_call_loc);
516 xbt_free(process_data[i]);
518 xbt_free(process_data);
519 process_data = nullptr;
521 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
522 smpi_comm_cleanup_smp(MPI_COMM_WORLD);
523 smpi_comm_cleanup_attributes(MPI_COMM_WORLD);
524 if(smpi_coll_cleanup_callback!=nullptr)
525 smpi_coll_cleanup_callback();
526 xbt_free(MPI_COMM_WORLD);
529 MPI_COMM_WORLD = MPI_COMM_NULL;
531 if (!MC_is_active()) {
532 xbt_os_timer_free(global_timer);
535 xbt_free(index_to_process_data);
536 if(smpi_privatize_global_variables)
537 smpi_destroy_global_memory_segments();
543 void __attribute__ ((weak)) user_main_()
545 xbt_die("Should not be in this smpi_simulated_main");
549 int __attribute__ ((weak)) smpi_simulated_main_(int argc, char **argv)
551 smpi_process_init(&argc, &argv);
556 inline static int smpi_main_wrapper(int argc, char **argv){
557 int ret = smpi_simulated_main_(argc,argv);
559 XBT_WARN("SMPI process did not return 0. Return value : %d", ret);
560 smpi_process_data()->return_value=ret;
565 int __attribute__ ((weak)) main(int argc, char **argv)
567 return smpi_main(smpi_main_wrapper, argc, argv);
573 static void smpi_init_logs(){
575 /* Connect log categories. See xbt/log.c */
577 XBT_LOG_CONNECT(smpi); /* Keep this line as soon as possible in this function: xbt_log_appender_file.c depends on it
578 DO NOT connect this in XBT or so, or it will be useless to xbt_log_appender_file.c */
579 XBT_LOG_CONNECT(instr_smpi);
580 XBT_LOG_CONNECT(smpi_base);
581 XBT_LOG_CONNECT(smpi_bench);
582 XBT_LOG_CONNECT(smpi_coll);
583 XBT_LOG_CONNECT(smpi_colls);
584 XBT_LOG_CONNECT(smpi_comm);
585 XBT_LOG_CONNECT(smpi_dvfs);
586 XBT_LOG_CONNECT(smpi_group);
587 XBT_LOG_CONNECT(smpi_kernel);
588 XBT_LOG_CONNECT(smpi_mpi);
589 XBT_LOG_CONNECT(smpi_mpi_dt);
590 XBT_LOG_CONNECT(smpi_pmpi);
591 XBT_LOG_CONNECT(smpi_replay);
592 XBT_LOG_CONNECT(smpi_rma);
596 static void smpi_init_options(){
597 int gather_id = find_coll_description(mpi_coll_gather_description, xbt_cfg_get_string("smpi/gather"),"gather");
598 mpi_coll_gather_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, int, MPI_Comm)>
599 (mpi_coll_gather_description[gather_id].coll);
601 int allgather_id = find_coll_description(mpi_coll_allgather_description,
602 xbt_cfg_get_string("smpi/allgather"),"allgather");
603 mpi_coll_allgather_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm)>
604 (mpi_coll_allgather_description[allgather_id].coll);
606 int allgatherv_id = find_coll_description(mpi_coll_allgatherv_description,
607 xbt_cfg_get_string("smpi/allgatherv"),"allgatherv");
608 mpi_coll_allgatherv_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm)>
609 (mpi_coll_allgatherv_description[allgatherv_id].coll);
611 int allreduce_id = find_coll_description(mpi_coll_allreduce_description,
612 xbt_cfg_get_string("smpi/allreduce"),"allreduce");
613 mpi_coll_allreduce_fun = reinterpret_cast<int (*)(void *sbuf, void *rbuf, int rcount, MPI_Datatype dtype, MPI_Op op, MPI_Comm comm)>
614 (mpi_coll_allreduce_description[allreduce_id].coll);
616 int alltoall_id = find_coll_description(mpi_coll_alltoall_description,
617 xbt_cfg_get_string("smpi/alltoall"),"alltoall");
618 mpi_coll_alltoall_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm)>
619 (mpi_coll_alltoall_description[alltoall_id].coll);
621 int alltoallv_id = find_coll_description(mpi_coll_alltoallv_description,
622 xbt_cfg_get_string("smpi/alltoallv"),"alltoallv");
623 mpi_coll_alltoallv_fun = reinterpret_cast<int (*)(void *, int *, int *, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm)>
624 (mpi_coll_alltoallv_description[alltoallv_id].coll);
626 int bcast_id = find_coll_description(mpi_coll_bcast_description, xbt_cfg_get_string("smpi/bcast"),"bcast");
627 mpi_coll_bcast_fun = reinterpret_cast<int (*)(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm com)>
628 (mpi_coll_bcast_description[bcast_id].coll);
630 int reduce_id = find_coll_description(mpi_coll_reduce_description, xbt_cfg_get_string("smpi/reduce"),"reduce");
631 mpi_coll_reduce_fun = reinterpret_cast<int (*)(void *buf, void *rbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm)>
632 (mpi_coll_reduce_description[reduce_id].coll);
634 int reduce_scatter_id =
635 find_coll_description(mpi_coll_reduce_scatter_description,
636 xbt_cfg_get_string("smpi/reduce-scatter"),"reduce_scatter");
637 mpi_coll_reduce_scatter_fun = reinterpret_cast<int (*)(void *sbuf, void *rbuf, int *rcounts,MPI_Datatype dtype, MPI_Op op, MPI_Comm comm)>
638 (mpi_coll_reduce_scatter_description[reduce_scatter_id].coll);
640 int scatter_id = find_coll_description(mpi_coll_scatter_description, xbt_cfg_get_string("smpi/scatter"),"scatter");
641 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)>
642 (mpi_coll_scatter_description[scatter_id].coll);
644 int barrier_id = find_coll_description(mpi_coll_barrier_description, xbt_cfg_get_string("smpi/barrier"),"barrier");
645 mpi_coll_barrier_fun = reinterpret_cast<int (*)(MPI_Comm comm)>
646 (mpi_coll_barrier_description[barrier_id].coll);
648 smpi_coll_cleanup_callback=nullptr;
649 smpi_cpu_threshold = xbt_cfg_get_double("smpi/cpu-threshold");
650 smpi_running_power = xbt_cfg_get_double("smpi/running-power");
651 smpi_privatize_global_variables = xbt_cfg_get_boolean("smpi/privatize-global-variables");
652 if (smpi_cpu_threshold < 0)
653 smpi_cpu_threshold = DBL_MAX;
656 int smpi_main(int (*realmain) (int argc, char *argv[]), int argc, char *argv[])
658 srand(SMPI_RAND_SEED);
660 if (getenv("SMPI_PRETEND_CC") != nullptr) {
661 /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the
662 * configuration tools */
667 TRACE_global_init(&argc, argv);
668 TRACE_add_start_function(TRACE_smpi_alloc);
669 TRACE_add_end_function(TRACE_smpi_release);
671 SIMIX_global_init(&argc, argv);
672 MSG_init(&argc,argv);
674 SMPI_switch_data_segment = smpi_switch_data_segment;
678 // parse the platform file: get the host list
679 SIMIX_create_environment(argv[1]);
680 SIMIX_comm_set_copy_data_callback(&smpi_comm_copy_buffer_callback);
681 SIMIX_function_register_default(realmain);
682 SIMIX_launch_application(argv[2]);
686 smpi_check_options();
688 if(smpi_privatize_global_variables)
689 smpi_initialize_global_memory_segments();
691 /* Clean IO before the run */
695 if (MC_is_active()) {
701 xbt_os_walltimer_stop(global_timer);
702 if (xbt_cfg_get_boolean("smpi/display-timing")){
703 double global_time = xbt_os_timer_elapsed(global_timer);
704 XBT_INFO("Simulated time: %g seconds. \n\n"
705 "The simulation took %g seconds (after parsing and platform setup)\n"
706 "%g seconds were actual computation of the application",
707 SIMIX_get_clock(), global_time , smpi_total_benched_time);
709 if (smpi_total_benched_time/global_time>=0.75)
710 XBT_INFO("More than 75%% of the time was spent inside the application code.\n"
711 "You may want to use sampling functions or trace replay to reduce this.");
714 int count = smpi_process_count();
716 for (i = 0; i < count; i++) {
717 if(process_data[i]->return_value!=0){
718 ret=process_data[i]->return_value;//return first non 0 value
722 smpi_global_destroy();
729 // This function can be called from extern file, to initialize logs, options, and processes of smpi
730 // without the need of smpirun
735 smpi_check_options();
736 if (TRACE_is_enabled() && TRACE_is_configured())
738 if(smpi_privatize_global_variables)
739 smpi_initialize_global_memory_segments();
742 void SMPI_finalize(){
743 smpi_global_destroy();