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/kernel/activity/SynchroComm.hpp"
20 #include <float.h> /* DBL_MAX */
29 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_kernel, smpi, "Logging specific to SMPI (kernel)");
30 #include <boost/tokenizer.hpp>
31 #include <boost/algorithm/string.hpp> /* trim_right / trim_left */
35 const char* papi_default_config_name = "default";
37 struct papi_process_data {
38 papi_counter_t counter_data;
43 std::unordered_map<std::string, double> location2speedup;
45 typedef struct s_smpi_process_data {
49 smx_mailbox_t mailbox;
50 smx_mailbox_t mailbox_small;
51 xbt_mutex_t mailboxes_mutex;
56 void *data; /* user data */
59 int sampling; /* inside an SMPI_SAMPLE_ block? */
61 bool replaying; /* is the process replaying a trace */
62 xbt_bar_t finalization_barrier;
64 smpi_trace_call_location_t trace_call_loc;
66 /** Contains hardware data as read by PAPI **/
68 papi_counter_t papi_counter_data;
70 } s_smpi_process_data_t;
72 static smpi_process_data_t *process_data = nullptr;
73 int process_count = 0;
74 int smpi_universe_size = 0;
75 int* index_to_process_data = nullptr;
76 extern double smpi_total_benched_time;
77 extern xbt_dict_t smpi_type_keyvals;
78 extern xbt_dict_t smpi_comm_keyvals;
79 xbt_os_timer_t global_timer;
80 MPI_Comm MPI_COMM_WORLD = MPI_COMM_UNINITIALIZED;
81 MPI_Errhandler *MPI_ERRORS_RETURN = nullptr;
82 MPI_Errhandler *MPI_ERRORS_ARE_FATAL = nullptr;
83 MPI_Errhandler *MPI_ERRHANDLER_NULL = nullptr;
85 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
87 static char *get_mailbox_name(char *str, int index)
89 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int> (sizeof(int) * 2), index);
93 static char *get_mailbox_name_small(char *str, int index)
95 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int> (sizeof(int) * 2), index);
99 void smpi_process_init(int *argc, char ***argv)
102 if (argc != nullptr && argv != nullptr) {
103 smx_actor_t proc = SIMIX_process_self();
104 proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
105 char* instance_id = (*argv)[1];
106 int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
107 int index = smpi_process_index_of_smx_process(proc);
109 if(index_to_process_data == nullptr){
110 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
113 if(smpi_privatize_global_variables){
114 /* Now using segment index of the process */
115 index = proc->segment_index;
116 /* Done at the process's creation */
117 SMPI_switch_data_segment(index);
120 MPI_Comm* temp_comm_world;
122 smpi_deployment_register_process(instance_id, rank, index, &temp_comm_world, &temp_bar);
123 smpi_process_data_t data = smpi_process_remote_data(index);
124 data->comm_world = temp_comm_world;
125 if(temp_bar != nullptr)
126 data->finalization_barrier = temp_bar;
128 data->instance_id = instance_id;
129 data->replaying = false;
131 simdata_process_t simdata = static_cast<simdata_process_t>(simcall_process_get_data(proc));
132 simdata->data = data;
135 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
136 (*argv)[(*argc) - 1] = nullptr;
137 (*argv)[(*argc) - 2] = nullptr;
142 // set the process attached to the mailbox
143 simcall_mbox_set_receiver(data->mailbox_small, proc);
144 XBT_DEBUG("<%d> New process in the game: %p", index, proc);
146 xbt_assert(smpi_process_data(),
147 "smpi_process_data() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
148 "Although it's required by MPI-2, this is currently not supported by SMPI.");
151 void smpi_process_destroy()
153 int index = smpi_process_index();
154 if(smpi_privatize_global_variables){
155 smpi_switch_data_segment(index);
157 process_data[index_to_process_data[index]]->state = SMPI_FINALIZED;
158 XBT_DEBUG("<%d> Process left the game", index);
161 /** @brief Prepares the current process for termination. */
162 void smpi_process_finalize()
164 // This leads to an explosion of the search graph which cannot be reduced:
165 if(MC_is_active() || MC_record_replay_is_active())
168 int index = smpi_process_index();
169 // wait for all pending asynchronous comms to finish
170 xbt_barrier_wait(process_data[index_to_process_data[index]]->finalization_barrier);
173 /** @brief Check if a process is finalized */
174 int smpi_process_finalized()
176 int index = smpi_process_index();
177 if (index != MPI_UNDEFINED)
178 return (process_data[index_to_process_data[index]]->state == SMPI_FINALIZED);
183 /** @brief Check if a process is initialized */
184 int smpi_process_initialized()
186 if (index_to_process_data == nullptr){
189 int index = smpi_process_index();
190 return ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state == SMPI_INITIALIZED));
194 /** @brief Mark a process as initialized (=MPI_Init called) */
195 void smpi_process_mark_as_initialized()
197 int index = smpi_process_index();
198 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
199 process_data[index_to_process_data[index]]->state = SMPI_INITIALIZED;
202 void smpi_process_set_replaying(bool value){
203 int index = smpi_process_index();
204 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
205 process_data[index_to_process_data[index]]->replaying = value;
208 bool smpi_process_get_replaying(){
209 int index = smpi_process_index();
210 if (index != MPI_UNDEFINED)
211 return process_data[index_to_process_data[index]]->replaying;
212 else return (_xbt_replay_is_active() != 0);
215 int smpi_global_size()
217 char *value = getenv("SMPI_GLOBAL_SIZE");
218 xbt_assert(value,"Please set env var SMPI_GLOBAL_SIZE to the expected number of processes.");
220 return xbt_str_parse_int(value, "SMPI_GLOBAL_SIZE contains a non-numerical value: %s");
223 smpi_process_data_t smpi_process_data()
225 simdata_process_t simdata = static_cast<simdata_process_t>(SIMIX_process_self_get_data());
226 return static_cast<smpi_process_data_t>(simdata->data);
229 smpi_process_data_t smpi_process_remote_data(int index)
231 return process_data[index_to_process_data[index]];
234 void smpi_process_set_user_data(void *data)
236 smpi_process_data_t process_data = smpi_process_data();
237 process_data->data = data;
240 void *smpi_process_get_user_data()
242 smpi_process_data_t process_data = smpi_process_data();
243 return process_data->data;
246 int smpi_process_count()
248 return process_count;
252 * \brief Returns a structure that stores the location (filename + linenumber)
253 * of the last calls to MPI_* functions.
255 * \see smpi_trace_set_call_location
257 smpi_trace_call_location_t* smpi_process_get_call_location()
259 smpi_process_data_t process_data = smpi_process_data();
260 return &process_data->trace_call_loc;
263 int smpi_process_index()
265 smpi_process_data_t data = smpi_process_data();
266 //return -1 if not initialized
267 return data != nullptr ? data->index : MPI_UNDEFINED;
270 MPI_Comm smpi_process_comm_world()
272 smpi_process_data_t data = smpi_process_data();
273 //return MPI_COMM_NULL if not initialized
274 return data != nullptr ? *data->comm_world : MPI_COMM_NULL;
277 smx_mailbox_t smpi_process_mailbox()
279 smpi_process_data_t data = smpi_process_data();
280 return data->mailbox;
283 smx_mailbox_t smpi_process_mailbox_small()
285 smpi_process_data_t data = smpi_process_data();
286 return data->mailbox_small;
289 xbt_mutex_t smpi_process_mailboxes_mutex()
291 smpi_process_data_t data = smpi_process_data();
292 return data->mailboxes_mutex;
295 smx_mailbox_t smpi_process_remote_mailbox(int index)
297 smpi_process_data_t data = smpi_process_remote_data(index);
298 return data->mailbox;
301 smx_mailbox_t smpi_process_remote_mailbox_small(int index)
303 smpi_process_data_t data = smpi_process_remote_data(index);
304 return data->mailbox_small;
307 xbt_mutex_t smpi_process_remote_mailboxes_mutex(int index)
309 smpi_process_data_t data = smpi_process_remote_data(index);
310 return data->mailboxes_mutex;
314 int smpi_process_papi_event_set(void)
316 smpi_process_data_t data = smpi_process_data();
317 return data->papi_event_set;
320 papi_counter_t& smpi_process_papi_counters(void)
322 smpi_process_data_t data = smpi_process_data();
323 return data->papi_counter_data;
327 xbt_os_timer_t smpi_process_timer()
329 smpi_process_data_t data = smpi_process_data();
333 void smpi_process_simulated_start()
335 smpi_process_data_t data = smpi_process_data();
336 data->simulated = SIMIX_get_clock();
339 double smpi_process_simulated_elapsed()
341 smpi_process_data_t data = smpi_process_data();
342 return SIMIX_get_clock() - data->simulated;
345 MPI_Comm smpi_process_comm_self()
347 smpi_process_data_t data = smpi_process_data();
348 if(data->comm_self==MPI_COMM_NULL){
349 MPI_Group group = smpi_group_new(1);
350 data->comm_self = smpi_comm_new(group, nullptr);
351 smpi_group_set_mapping(group, smpi_process_index(), 0);
354 return data->comm_self;
357 MPI_Comm smpi_process_get_comm_intra()
359 smpi_process_data_t data = smpi_process_data();
360 return data->comm_intra;
363 void smpi_process_set_comm_intra(MPI_Comm comm)
365 smpi_process_data_t data = smpi_process_data();
366 data->comm_intra = comm;
369 void smpi_process_set_sampling(int s)
371 smpi_process_data_t data = smpi_process_data();
375 int smpi_process_get_sampling()
377 smpi_process_data_t data = smpi_process_data();
378 return data->sampling;
381 void print_request(const char *message, MPI_Request request)
383 XBT_VERB("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
384 message, request, request->buf, request->size, request->src, request->dst, request->tag, request->flags);
387 void smpi_comm_copy_buffer_callback(smx_activity_t synchro, void *buff, size_t buff_size)
389 XBT_DEBUG("Copy the data over");
391 simgrid::kernel::activity::Comm *comm = dynamic_cast<simgrid::kernel::activity::Comm*>(synchro);
393 if((smpi_privatize_global_variables) && (static_cast<char*>(buff) >= smpi_start_data_exe)
394 && (static_cast<char*>(buff) < smpi_start_data_exe + smpi_size_data_exe )
396 XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !");
399 smpi_switch_data_segment((static_cast<smpi_process_data_t>((static_cast<simdata_process_t>(SIMIX_process_get_data(comm->src_proc))->data))->index));
400 tmpbuff = static_cast<void*>(xbt_malloc(buff_size));
401 memcpy(tmpbuff, buff, buff_size);
404 if((smpi_privatize_global_variables) && ((char*)comm->dst_buff >= smpi_start_data_exe)
405 && ((char*)comm->dst_buff < smpi_start_data_exe + smpi_size_data_exe )){
406 XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment");
407 smpi_switch_data_segment((static_cast<smpi_process_data_t>((static_cast<simdata_process_t>(SIMIX_process_get_data(comm->dst_proc))->data))->index));
410 memcpy(comm->dst_buff, tmpbuff, buff_size);
411 if (comm->detached) {
412 // if this is a detached send, the source buffer was duplicated by SMPI
413 // sender to make the original buffer available to the application ASAP
415 //It seems that the request is used after the call there this should be free somewhere else but where???
416 //xbt_free(comm->comm.src_data);// inside SMPI the request is kept inside the user data and should be free
417 comm->src_buff = nullptr;
420 if(tmpbuff!=buff)xbt_free(tmpbuff);
423 void smpi_comm_null_copy_buffer_callback(smx_activity_t comm, void *buff, size_t buff_size)
428 static void smpi_check_options(){
429 //check correctness of MPI parameters
431 xbt_assert(xbt_cfg_get_int("smpi/async-small-thresh") <= xbt_cfg_get_int("smpi/send-is-detached-thresh"));
433 if (xbt_cfg_is_default_value("smpi/running-power")) {
434 XBT_INFO("You did not set the power of the host running the simulation. "
435 "The timings will certainly not be accurate. "
436 "Use the option \"--cfg=smpi/running-power:<flops>\" to set its value."
437 "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information.");
442 return process_data != nullptr;
445 void smpi_global_init()
449 char name[MAILBOX_NAME_MAXLEN];
452 if (!MC_is_active()) {
453 global_timer = xbt_os_timer_new();
454 xbt_os_walltimer_start(global_timer);
457 if (xbt_cfg_get_string("smpi/comp-adjustment-file")[0] != '\0') {
458 std::string filename {xbt_cfg_get_string("smpi/comp-adjustment-file")};
459 std::ifstream fstream(filename);
460 if (!fstream.is_open()) {
461 xbt_die("Could not open file %s. Does it exist?", filename.c_str());
465 typedef boost::tokenizer< boost::escaped_list_separator<char>> Tokenizer;
466 std::getline(fstream, line); // Skip the header line
467 while (std::getline(fstream, line)) {
469 Tokenizer::iterator it = tok.begin();
470 Tokenizer::iterator end = std::next(tok.begin());
472 std::string location = *it;
473 boost::trim(location);
474 location2speedup.insert(std::pair<std::string, double>(location, std::stod(*end)));
479 // This map holds for each computation unit (such as "default" or "process1" etc.)
480 // the configuration as given by the user (counter data as a pair of (counter_name, counter_counter))
481 // and the (computed) event_set.
482 std::map</* computation unit name */ std::string, papi_process_data> units2papi_setup;
484 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
485 if (PAPI_library_init(PAPI_VER_CURRENT) != PAPI_VER_CURRENT)
486 XBT_ERROR("Could not initialize PAPI library; is it correctly installed and linked?"
487 " Expected version is %i",
490 typedef boost::tokenizer<boost::char_separator<char>> Tokenizer;
491 boost::char_separator<char> separator_units(";");
492 std::string str = std::string(xbt_cfg_get_string("smpi/papi-events"));
493 Tokenizer tokens(str, separator_units);
495 // Iterate over all the computational units. This could be
496 // processes, hosts, threads, ranks... You name it. I'm not exactly
497 // sure what we will support eventually, so I'll leave it at the
498 // general term "units".
499 for (auto& unit_it : tokens) {
500 boost::char_separator<char> separator_events(":");
501 Tokenizer event_tokens(unit_it, separator_events);
503 int event_set = PAPI_NULL;
504 if (PAPI_create_eventset(&event_set) != PAPI_OK) {
505 // TODO: Should this let the whole simulation die?
506 XBT_CRITICAL("Could not create PAPI event set during init.");
509 // NOTE: We cannot use a map here, as we must obey the order of the counters
510 // This is important for PAPI: We need to map the values of counters back
511 // to the event_names (so, when PAPI_read() has finished)!
512 papi_counter_t counters2values;
514 // Iterate over all counters that were specified for this specific
516 // Note that we need to remove the name of the unit
517 // (that could also be the "default" value), which always comes first.
518 // Hence, we start at ++(events.begin())!
519 for (Tokenizer::iterator events_it = ++(event_tokens.begin()); events_it != event_tokens.end(); events_it++) {
521 int event_code = PAPI_NULL;
522 char* event_name = const_cast<char*>((*events_it).c_str());
523 if (PAPI_event_name_to_code(event_name, &event_code) == PAPI_OK) {
524 if (PAPI_add_event(event_set, event_code) != PAPI_OK) {
525 XBT_ERROR("Could not add PAPI event '%s'. Skipping.", event_name);
528 XBT_DEBUG("Successfully added PAPI event '%s' to the event set.", event_name);
531 XBT_CRITICAL("Could not find PAPI event '%s'. Skipping.", event_name);
535 counters2values.push_back(
536 // We cannot just pass *events_it, as this is of type const basic_string
537 std::make_pair<std::string, long long>(std::string(*events_it), 0));
540 std::string unit_name = *(event_tokens.begin());
541 papi_process_data config = {.counter_data = std::move(counters2values), .event_set = event_set};
543 units2papi_setup.insert(std::make_pair(unit_name, std::move(config)));
547 if (process_count == 0){
548 process_count = SIMIX_process_count();
551 smpi_universe_size = process_count;
552 process_data = new smpi_process_data_t[process_count];
553 for (i = 0; i < process_count; i++) {
554 process_data[i] = new s_smpi_process_data_t;
555 process_data[i]->argc = nullptr;
556 process_data[i]->argv = nullptr;
557 process_data[i]->mailbox = simcall_mbox_create(get_mailbox_name(name, i));
558 process_data[i]->mailbox_small = simcall_mbox_create(get_mailbox_name_small(name, i));
559 process_data[i]->mailboxes_mutex = xbt_mutex_init();
560 process_data[i]->timer = xbt_os_timer_new();
562 MC_ignore_heap(process_data[i]->timer, xbt_os_timer_size());
563 process_data[i]->comm_self = MPI_COMM_NULL;
564 process_data[i]->comm_intra = MPI_COMM_NULL;
565 process_data[i]->comm_world = nullptr;
566 process_data[i]->state = SMPI_UNINITIALIZED;
567 process_data[i]->sampling = 0;
568 process_data[i]->finalization_barrier = nullptr;
569 process_data[i]->return_value = 0;
572 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
573 // TODO: Implement host/process/thread based counters. This implementation
574 // just always takes the values passed via "default", like this:
575 // "default:COUNTER1:COUNTER2:COUNTER3;".
576 auto it = units2papi_setup.find(papi_default_config_name);
577 if (it != units2papi_setup.end()) {
578 process_data[i]->papi_event_set = it->second.event_set;
579 process_data[i]->papi_counter_data = it->second.counter_data;
580 XBT_DEBUG("Setting PAPI set for process %i", i);
582 process_data[i]->papi_event_set = PAPI_NULL;
583 XBT_DEBUG("No PAPI set for process %i", i);
588 //if the process was launched through smpirun script we generate a global mpi_comm_world
589 //if not, we let MPI_COMM_NULL, and the comm world will be private to each mpi instance
591 group = smpi_group_new(process_count);
592 MPI_COMM_WORLD = smpi_comm_new(group, nullptr);
593 MPI_Attr_put(MPI_COMM_WORLD, MPI_UNIVERSE_SIZE, reinterpret_cast<void *>(process_count));
594 xbt_bar_t bar=xbt_barrier_init(process_count);
596 for (i = 0; i < process_count; i++) {
597 smpi_group_set_mapping(group, i, i);
598 process_data[i]->finalization_barrier = bar;
603 void smpi_global_destroy()
605 int count = smpi_process_count();
608 smpi_bench_destroy();
609 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
610 while (smpi_group_unuse(smpi_comm_group(MPI_COMM_WORLD)) > 0);
611 xbt_barrier_destroy(process_data[0]->finalization_barrier);
613 smpi_deployment_cleanup_instances();
615 for (i = 0; i < count; i++) {
616 if(process_data[i]->comm_self!=MPI_COMM_NULL){
617 smpi_comm_destroy(process_data[i]->comm_self);
619 if(process_data[i]->comm_intra!=MPI_COMM_NULL){
620 smpi_comm_destroy(process_data[i]->comm_intra);
622 xbt_os_timer_free(process_data[i]->timer);
623 xbt_mutex_destroy(process_data[i]->mailboxes_mutex);
624 delete process_data[i];
626 delete[] process_data;
627 process_data = nullptr;
629 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
630 smpi_comm_cleanup_smp(MPI_COMM_WORLD);
631 smpi_comm_cleanup_attributes(MPI_COMM_WORLD);
632 if(smpi_coll_cleanup_callback!=nullptr)
633 smpi_coll_cleanup_callback();
634 xbt_free(MPI_COMM_WORLD);
637 MPI_COMM_WORLD = MPI_COMM_NULL;
639 if (!MC_is_active()) {
640 xbt_os_timer_free(global_timer);
643 xbt_free(index_to_process_data);
644 if(smpi_type_keyvals!=nullptr)
645 xbt_dict_free(&smpi_type_keyvals);
646 if(smpi_comm_keyvals!=nullptr)
647 xbt_dict_free(&smpi_comm_keyvals);
648 if(smpi_privatize_global_variables)
649 smpi_destroy_global_memory_segments();
655 void __attribute__ ((weak)) user_main_()
657 xbt_die("Should not be in this smpi_simulated_main");
661 int __attribute__ ((weak)) smpi_simulated_main_(int argc, char **argv)
663 smpi_process_init(&argc, &argv);
668 inline static int smpi_main_wrapper(int argc, char **argv){
669 int ret = smpi_simulated_main_(argc,argv);
671 XBT_WARN("SMPI process did not return 0. Return value : %d", ret);
672 smpi_process_data()->return_value=ret;
677 int __attribute__ ((weak)) main(int argc, char **argv)
679 return smpi_main(smpi_main_wrapper, argc, argv);
685 static void smpi_init_logs(){
687 /* Connect log categories. See xbt/log.c */
689 XBT_LOG_CONNECT(smpi); /* Keep this line as soon as possible in this function: xbt_log_appender_file.c depends on it
690 DO NOT connect this in XBT or so, or it will be useless to xbt_log_appender_file.c */
691 XBT_LOG_CONNECT(instr_smpi);
692 XBT_LOG_CONNECT(smpi_base);
693 XBT_LOG_CONNECT(smpi_bench);
694 XBT_LOG_CONNECT(smpi_coll);
695 XBT_LOG_CONNECT(smpi_colls);
696 XBT_LOG_CONNECT(smpi_comm);
697 XBT_LOG_CONNECT(smpi_dvfs);
698 XBT_LOG_CONNECT(smpi_group);
699 XBT_LOG_CONNECT(smpi_kernel);
700 XBT_LOG_CONNECT(smpi_mpi);
701 XBT_LOG_CONNECT(smpi_mpi_dt);
702 XBT_LOG_CONNECT(smpi_pmpi);
703 XBT_LOG_CONNECT(smpi_replay);
704 XBT_LOG_CONNECT(smpi_rma);
708 static void smpi_init_options(){
709 int gather_id = find_coll_description(mpi_coll_gather_description, xbt_cfg_get_string("smpi/gather"),"gather");
710 mpi_coll_gather_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, int, MPI_Comm)>
711 (mpi_coll_gather_description[gather_id].coll);
713 int allgather_id = find_coll_description(mpi_coll_allgather_description,
714 xbt_cfg_get_string("smpi/allgather"),"allgather");
715 mpi_coll_allgather_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm)>
716 (mpi_coll_allgather_description[allgather_id].coll);
718 int allgatherv_id = find_coll_description(mpi_coll_allgatherv_description,
719 xbt_cfg_get_string("smpi/allgatherv"),"allgatherv");
720 mpi_coll_allgatherv_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm)>
721 (mpi_coll_allgatherv_description[allgatherv_id].coll);
723 int allreduce_id = find_coll_description(mpi_coll_allreduce_description,
724 xbt_cfg_get_string("smpi/allreduce"),"allreduce");
725 mpi_coll_allreduce_fun = reinterpret_cast<int (*)(void *sbuf, void *rbuf, int rcount, MPI_Datatype dtype, MPI_Op op, MPI_Comm comm)>
726 (mpi_coll_allreduce_description[allreduce_id].coll);
728 int alltoall_id = find_coll_description(mpi_coll_alltoall_description,
729 xbt_cfg_get_string("smpi/alltoall"),"alltoall");
730 mpi_coll_alltoall_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm)>
731 (mpi_coll_alltoall_description[alltoall_id].coll);
733 int alltoallv_id = find_coll_description(mpi_coll_alltoallv_description,
734 xbt_cfg_get_string("smpi/alltoallv"),"alltoallv");
735 mpi_coll_alltoallv_fun = reinterpret_cast<int (*)(void *, int *, int *, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm)>
736 (mpi_coll_alltoallv_description[alltoallv_id].coll);
738 int bcast_id = find_coll_description(mpi_coll_bcast_description, xbt_cfg_get_string("smpi/bcast"),"bcast");
739 mpi_coll_bcast_fun = reinterpret_cast<int (*)(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm com)>
740 (mpi_coll_bcast_description[bcast_id].coll);
742 int reduce_id = find_coll_description(mpi_coll_reduce_description, xbt_cfg_get_string("smpi/reduce"),"reduce");
743 mpi_coll_reduce_fun = reinterpret_cast<int (*)(void *buf, void *rbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm)>
744 (mpi_coll_reduce_description[reduce_id].coll);
746 int reduce_scatter_id =
747 find_coll_description(mpi_coll_reduce_scatter_description,
748 xbt_cfg_get_string("smpi/reduce-scatter"),"reduce_scatter");
749 mpi_coll_reduce_scatter_fun = reinterpret_cast<int (*)(void *sbuf, void *rbuf, int *rcounts,MPI_Datatype dtype, MPI_Op op, MPI_Comm comm)>
750 (mpi_coll_reduce_scatter_description[reduce_scatter_id].coll);
752 int scatter_id = find_coll_description(mpi_coll_scatter_description, xbt_cfg_get_string("smpi/scatter"),"scatter");
753 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)>
754 (mpi_coll_scatter_description[scatter_id].coll);
756 int barrier_id = find_coll_description(mpi_coll_barrier_description, xbt_cfg_get_string("smpi/barrier"),"barrier");
757 mpi_coll_barrier_fun = reinterpret_cast<int (*)(MPI_Comm comm)>
758 (mpi_coll_barrier_description[barrier_id].coll);
760 smpi_coll_cleanup_callback=nullptr;
761 smpi_cpu_threshold = xbt_cfg_get_double("smpi/cpu-threshold");
762 smpi_running_power = xbt_cfg_get_double("smpi/running-power");
763 smpi_privatize_global_variables = xbt_cfg_get_boolean("smpi/privatize-global-variables");
764 if (smpi_cpu_threshold < 0)
765 smpi_cpu_threshold = DBL_MAX;
768 int smpi_main(int (*realmain) (int argc, char *argv[]), int argc, char *argv[])
770 srand(SMPI_RAND_SEED);
772 if (getenv("SMPI_PRETEND_CC") != nullptr) {
773 /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the
774 * configuration tools */
779 TRACE_global_init(&argc, argv);
780 TRACE_add_start_function(TRACE_smpi_alloc);
781 TRACE_add_end_function(TRACE_smpi_release);
783 SIMIX_global_init(&argc, argv);
784 MSG_init(&argc,argv);
786 SMPI_switch_data_segment = smpi_switch_data_segment;
790 // parse the platform file: get the host list
791 SIMIX_create_environment(argv[1]);
792 SIMIX_comm_set_copy_data_callback(&smpi_comm_copy_buffer_callback);
793 SIMIX_function_register_default(realmain);
794 SIMIX_launch_application(argv[2]);
798 smpi_check_options();
800 if(smpi_privatize_global_variables)
801 smpi_initialize_global_memory_segments();
803 /* Clean IO before the run */
807 if (MC_is_active()) {
813 xbt_os_walltimer_stop(global_timer);
814 if (xbt_cfg_get_boolean("smpi/display-timing")){
815 double global_time = xbt_os_timer_elapsed(global_timer);
816 XBT_INFO("Simulated time: %g seconds. \n\n"
817 "The simulation took %g seconds (after parsing and platform setup)\n"
818 "%g seconds were actual computation of the application",
819 SIMIX_get_clock(), global_time , smpi_total_benched_time);
821 if (smpi_total_benched_time/global_time>=0.75)
822 XBT_INFO("More than 75%% of the time was spent inside the application code.\n"
823 "You may want to use sampling functions or trace replay to reduce this.");
826 int count = smpi_process_count();
828 for (i = 0; i < count; i++) {
829 if(process_data[i]->return_value!=0){
830 ret=process_data[i]->return_value;//return first non 0 value
834 smpi_global_destroy();
841 // This function can be called from extern file, to initialize logs, options, and processes of smpi
842 // without the need of smpirun
847 smpi_check_options();
848 if (TRACE_is_enabled() && TRACE_is_configured())
850 if(smpi_privatize_global_variables)
851 smpi_initialize_global_memory_segments();
854 void SMPI_finalize(){
855 smpi_global_destroy();