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 */
33 const char* papi_default_config_name = "default";
35 struct papi_process_data {
36 papi_counter_t counter_data;
41 std::unordered_map<std::string, double> location2speedup;
43 typedef struct s_smpi_process_data {
47 smx_mailbox_t mailbox;
48 smx_mailbox_t mailbox_small;
49 xbt_mutex_t mailboxes_mutex;
54 void *data; /* user data */
57 int sampling; /* inside an SMPI_SAMPLE_ block? */
59 bool replaying; /* is the process replaying a trace */
60 xbt_bar_t finalization_barrier;
62 smpi_trace_call_location_t* trace_call_loc;
64 /** Contains hardware data as read by PAPI **/
66 papi_counter_t papi_counter_data;
68 } s_smpi_process_data_t;
70 static smpi_process_data_t *process_data = nullptr;
71 int process_count = 0;
72 int smpi_universe_size = 0;
73 int* index_to_process_data = nullptr;
74 extern double smpi_total_benched_time;
75 xbt_os_timer_t global_timer;
76 MPI_Comm MPI_COMM_WORLD = MPI_COMM_UNINITIALIZED;
77 MPI_Errhandler *MPI_ERRORS_RETURN = nullptr;
78 MPI_Errhandler *MPI_ERRORS_ARE_FATAL = nullptr;
79 MPI_Errhandler *MPI_ERRHANDLER_NULL = nullptr;
81 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
83 static char *get_mailbox_name(char *str, int index)
85 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int> (sizeof(int) * 2), index);
89 static char *get_mailbox_name_small(char *str, int index)
91 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int> (sizeof(int) * 2), index);
95 void smpi_process_init(int *argc, char ***argv)
98 smpi_process_data_t data;
101 if (argc != nullptr && argv != nullptr) {
102 proc = SIMIX_process_self();
103 SIMIX_process_set_cleanup_function(proc, MSG_process_cleanup_from_SIMIX);
104 char* instance_id = (*argv)[1];
105 int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
106 index = smpi_process_index_of_smx_process(proc);
108 if(index_to_process_data == nullptr){
109 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
112 if(smpi_privatize_global_variables){
113 /* Now using segment index of the process */
114 index = proc->segment_index;
115 /* Done at the process's creation */
116 SMPI_switch_data_segment(index);
119 MPI_Comm* temp_comm_world;
121 smpi_deployment_register_process(instance_id, rank, index, &temp_comm_world, &temp_bar);
122 data = smpi_process_remote_data(index);
123 data->comm_world = temp_comm_world;
124 if(temp_bar != nullptr)
125 data->finalization_barrier = temp_bar;
127 data->instance_id = instance_id;
128 data->replaying = false;
130 simdata_process_t simdata = static_cast<simdata_process_t>(simcall_process_get_data(proc));
131 simdata->data = data;
134 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
135 (*argv)[(*argc) - 1] = nullptr;
136 (*argv)[(*argc) - 2] = nullptr;
141 // set the process attached to the mailbox
142 simcall_mbox_set_receiver(data->mailbox_small, proc);
143 XBT_DEBUG("<%d> New process in the game: %p", index, proc);
145 xbt_assert(smpi_process_data(),
146 "smpi_process_data() returned nullptr. You probably gave a nullptr parameter to MPI_Init. Although it's required by "
147 "MPI-2, this is currently not supported by SMPI.");
150 void smpi_process_destroy()
152 int index = smpi_process_index();
153 if(smpi_privatize_global_variables){
154 smpi_switch_data_segment(index);
156 process_data[index_to_process_data[index]]->state = SMPI_FINALIZED;
157 XBT_DEBUG("<%d> Process left the game", index);
160 /** @brief Prepares the current process for termination. */
161 void smpi_process_finalize()
163 // This leads to an explosion of the search graph which cannot be reduced:
164 if(MC_is_active() || MC_record_replay_is_active())
167 int index = smpi_process_index();
168 // wait for all pending asynchronous comms to finish
169 xbt_barrier_wait(process_data[index_to_process_data[index]]->finalization_barrier);
172 /** @brief Check if a process is finalized */
173 int smpi_process_finalized()
175 int index = smpi_process_index();
176 if (index != MPI_UNDEFINED)
177 return (process_data[index_to_process_data[index]]->state == SMPI_FINALIZED);
182 /** @brief Check if a process is initialized */
183 int smpi_process_initialized()
185 if (index_to_process_data == nullptr){
188 int index = smpi_process_index();
189 return ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state == SMPI_INITIALIZED));
193 /** @brief Mark a process as initialized (=MPI_Init called) */
194 void smpi_process_mark_as_initialized()
196 int index = smpi_process_index();
197 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
198 process_data[index_to_process_data[index]]->state = SMPI_INITIALIZED;
201 void smpi_process_set_replaying(bool value){
202 int index = smpi_process_index();
203 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
204 process_data[index_to_process_data[index]]->replaying = value;
207 bool smpi_process_get_replaying(){
208 int index = smpi_process_index();
209 if (index != MPI_UNDEFINED)
210 return process_data[index_to_process_data[index]]->replaying;
211 else return (_xbt_replay_is_active() != 0);
214 int smpi_global_size()
216 char *value = getenv("SMPI_GLOBAL_SIZE");
217 xbt_assert(value,"Please set env var SMPI_GLOBAL_SIZE to the expected number of processes.");
219 return xbt_str_parse_int(value, "SMPI_GLOBAL_SIZE contains a non-numerical value: %s");
222 smpi_process_data_t smpi_process_data()
224 simdata_process_t simdata = static_cast<simdata_process_t>(SIMIX_process_self_get_data());
225 return static_cast<smpi_process_data_t>(simdata->data);
228 smpi_process_data_t smpi_process_remote_data(int index)
230 return process_data[index_to_process_data[index]];
233 void smpi_process_set_user_data(void *data)
235 smpi_process_data_t process_data = smpi_process_data();
236 process_data->data = data;
239 void *smpi_process_get_user_data()
241 smpi_process_data_t process_data = smpi_process_data();
242 return process_data->data;
245 int smpi_process_count()
247 return process_count;
251 * \brief Returns a structure that stores the location (filename + linenumber)
252 * of the last calls to MPI_* functions.
254 * \see smpi_trace_set_call_location
256 smpi_trace_call_location_t* smpi_process_get_call_location()
258 smpi_process_data_t process_data = smpi_process_data();
259 return process_data->trace_call_loc;
262 int smpi_process_index()
264 smpi_process_data_t data = smpi_process_data();
265 //return -1 if not initialized
266 return data != nullptr ? data->index : MPI_UNDEFINED;
269 MPI_Comm smpi_process_comm_world()
271 smpi_process_data_t data = smpi_process_data();
272 //return MPI_COMM_NULL if not initialized
273 return data != nullptr ? *data->comm_world : MPI_COMM_NULL;
276 smx_mailbox_t smpi_process_mailbox()
278 smpi_process_data_t data = smpi_process_data();
279 return data->mailbox;
282 smx_mailbox_t smpi_process_mailbox_small()
284 smpi_process_data_t data = smpi_process_data();
285 return data->mailbox_small;
288 xbt_mutex_t smpi_process_mailboxes_mutex()
290 smpi_process_data_t data = smpi_process_data();
291 return data->mailboxes_mutex;
294 smx_mailbox_t smpi_process_remote_mailbox(int index)
296 smpi_process_data_t data = smpi_process_remote_data(index);
297 return data->mailbox;
300 smx_mailbox_t smpi_process_remote_mailbox_small(int index)
302 smpi_process_data_t data = smpi_process_remote_data(index);
303 return data->mailbox_small;
306 xbt_mutex_t smpi_process_remote_mailboxes_mutex(int index)
308 smpi_process_data_t data = smpi_process_remote_data(index);
309 return data->mailboxes_mutex;
313 int smpi_process_papi_event_set(void)
315 smpi_process_data_t data = smpi_process_data();
316 return data->papi_event_set;
319 papi_counter_t& smpi_process_papi_counters(void)
321 smpi_process_data_t data = smpi_process_data();
322 return data->papi_counter_data;
326 xbt_os_timer_t smpi_process_timer()
328 smpi_process_data_t data = smpi_process_data();
332 void smpi_process_simulated_start()
334 smpi_process_data_t data = smpi_process_data();
335 data->simulated = SIMIX_get_clock();
338 double smpi_process_simulated_elapsed()
340 smpi_process_data_t data = smpi_process_data();
341 return SIMIX_get_clock() - data->simulated;
344 MPI_Comm smpi_process_comm_self()
346 smpi_process_data_t data = smpi_process_data();
347 if(data->comm_self==MPI_COMM_NULL){
348 MPI_Group group = smpi_group_new(1);
349 data->comm_self = smpi_comm_new(group, nullptr);
350 smpi_group_set_mapping(group, smpi_process_index(), 0);
353 return data->comm_self;
356 MPI_Comm smpi_process_get_comm_intra()
358 smpi_process_data_t data = smpi_process_data();
359 return data->comm_intra;
362 void smpi_process_set_comm_intra(MPI_Comm comm)
364 smpi_process_data_t data = smpi_process_data();
365 data->comm_intra = comm;
368 void smpi_process_set_sampling(int s)
370 smpi_process_data_t data = smpi_process_data();
374 int smpi_process_get_sampling()
376 smpi_process_data_t data = smpi_process_data();
377 return data->sampling;
380 void print_request(const char *message, MPI_Request request)
382 XBT_VERB("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
383 message, request, request->buf, request->size, request->src, request->dst, request->tag, request->flags);
386 void smpi_comm_copy_buffer_callback(smx_synchro_t synchro, void *buff, size_t buff_size)
388 XBT_DEBUG("Copy the data over");
390 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(synchro);
392 if((smpi_privatize_global_variables) && (static_cast<char*>(buff) >= smpi_start_data_exe)
393 && (static_cast<char*>(buff) < smpi_start_data_exe + smpi_size_data_exe )
395 XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !");
398 smpi_switch_data_segment((static_cast<smpi_process_data_t>((static_cast<simdata_process_t>(SIMIX_process_get_data(comm->src_proc))->data))->index));
399 tmpbuff = static_cast<void*>(xbt_malloc(buff_size));
400 memcpy(tmpbuff, buff, buff_size);
403 if((smpi_privatize_global_variables) && ((char*)comm->dst_buff >= smpi_start_data_exe)
404 && ((char*)comm->dst_buff < smpi_start_data_exe + smpi_size_data_exe )){
405 XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment");
406 smpi_switch_data_segment((static_cast<smpi_process_data_t>((static_cast<simdata_process_t>(SIMIX_process_get_data(comm->dst_proc))->data))->index));
409 memcpy(comm->dst_buff, tmpbuff, buff_size);
410 if (comm->detached) {
411 // if this is a detached send, the source buffer was duplicated by SMPI
412 // sender to make the original buffer available to the application ASAP
414 //It seems that the request is used after the call there this should be free somewhere else but where???
415 //xbt_free(comm->comm.src_data);// inside SMPI the request is kept inside the user data and should be free
416 comm->src_buff = nullptr;
419 if(tmpbuff!=buff)xbt_free(tmpbuff);
422 void smpi_comm_null_copy_buffer_callback(smx_synchro_t comm, void *buff, size_t buff_size)
427 static void smpi_check_options(){
428 //check correctness of MPI parameters
430 xbt_assert(xbt_cfg_get_int("smpi/async-small-thresh") <= xbt_cfg_get_int("smpi/send-is-detached-thresh"));
432 if (xbt_cfg_is_default_value("smpi/running-power")) {
433 XBT_INFO("You did not set the power of the host running the simulation. "
434 "The timings will certainly not be accurate. "
435 "Use the option \"--cfg=smpi/running-power:<flops>\" to set its value."
436 "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information.");
441 return process_data != nullptr;
444 void smpi_global_init()
448 char name[MAILBOX_NAME_MAXLEN];
451 if (!MC_is_active()) {
452 global_timer = xbt_os_timer_new();
453 xbt_os_walltimer_start(global_timer);
456 if (xbt_cfg_get_string("smpi/comp-adjustment-file")[0] != '\0') {
457 std::string filename {xbt_cfg_get_string("smpi/comp-adjustment-file")};
458 std::ifstream fstream(filename);
459 if (!fstream.is_open()) {
460 xbt_die("Could not open file %s. Does it exist?", filename.c_str());
464 typedef boost::tokenizer< boost::escaped_list_separator<char>> Tokenizer;
465 std::getline(fstream, line); // Skip the header line
466 while (std::getline(fstream, line)) {
468 Tokenizer::iterator it = tok.begin();
469 Tokenizer::iterator end = std::next(tok.begin());
471 std::string location = *it;
472 boost::trim(location);
473 location2speedup.insert(std::pair<std::string, double>(location, std::stod(*end)));
478 // This map holds for each computation unit (such as "default" or "process1" etc.)
479 // the configuration as given by the user (counter data as a pair of (counter_name, counter_counter))
480 // and the (computed) event_set.
481 std::map</* computation unit name */ std::string, papi_process_data> units2papi_setup;
483 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
484 if (PAPI_library_init(PAPI_VER_CURRENT) != PAPI_VER_CURRENT)
485 XBT_ERROR("Could not initialize PAPI library; is it correctly installed and linked?"
486 " Expected version is %i",
489 typedef boost::tokenizer<boost::char_separator<char>> Tokenizer;
490 boost::char_separator<char> separator_units(";");
491 std::string str = std::string(xbt_cfg_get_string("smpi/papi-events"));
492 Tokenizer tokens(str, separator_units);
494 // Iterate over all the computational units. This could be
495 // processes, hosts, threads, ranks... You name it. I'm not exactly
496 // sure what we will support eventually, so I'll leave it at the
497 // general term "units".
498 for (auto& unit_it : tokens) {
499 boost::char_separator<char> separator_events(":");
500 Tokenizer event_tokens(unit_it, separator_events);
502 int event_set = PAPI_NULL;
503 if (PAPI_create_eventset(&event_set) != PAPI_OK) {
504 // TODO: Should this let the whole simulation die?
505 XBT_CRITICAL("Could not create PAPI event set during init.");
508 // NOTE: We cannot use a map here, as we must obey the order of the counters
509 // This is important for PAPI: We need to map the values of counters back
510 // to the event_names (so, when PAPI_read() has finished)!
511 papi_counter_t counters2values;
513 // Iterate over all counters that were specified for this specific
515 // Note that we need to remove the name of the unit
516 // (that could also be the "default" value), which always comes first.
517 // Hence, we start at ++(events.begin())!
518 for (Tokenizer::iterator events_it = ++(event_tokens.begin()); events_it != event_tokens.end(); events_it++) {
520 int event_code = PAPI_NULL;
521 char* event_name = const_cast<char*>((*events_it).c_str());
522 if (PAPI_event_name_to_code(event_name, &event_code) == PAPI_OK) {
523 if (PAPI_add_event(event_set, event_code) != PAPI_OK) {
524 XBT_ERROR("Could not add PAPI event '%s'. Skipping.", event_name);
527 XBT_DEBUG("Successfully added PAPI event '%s' to the event set.", event_name);
530 XBT_CRITICAL("Could not find PAPI event '%s'. Skipping.", event_name);
534 counters2values.push_back(
535 // We cannot just pass *events_it, as this is of type const basic_string
536 std::make_pair<std::string, long long>(std::string(*events_it), 0));
539 std::string unit_name = *(event_tokens.begin());
540 papi_process_data config = {.counter_data = std::move(counters2values), .event_set = event_set};
542 units2papi_setup.insert(std::make_pair(unit_name, std::move(config)));
546 if (process_count == 0){
547 process_count = SIMIX_process_count();
550 smpi_universe_size = process_count;
551 process_data = new smpi_process_data_t[process_count];
552 for (i = 0; i < process_count; i++) {
553 process_data[i] = new s_smpi_process_data_t;
554 process_data[i]->argc = nullptr;
555 process_data[i]->argv = nullptr;
556 process_data[i]->mailbox = simcall_mbox_create(get_mailbox_name(name, i));
557 process_data[i]->mailbox_small = simcall_mbox_create(get_mailbox_name_small(name, i));
558 process_data[i]->mailboxes_mutex = xbt_mutex_init();
559 process_data[i]->timer = xbt_os_timer_new();
561 MC_ignore_heap(process_data[i]->timer, xbt_os_timer_size());
562 process_data[i]->comm_self = MPI_COMM_NULL;
563 process_data[i]->comm_intra = MPI_COMM_NULL;
564 process_data[i]->comm_world = nullptr;
565 process_data[i]->state = SMPI_UNINITIALIZED;
566 process_data[i]->sampling = 0;
567 process_data[i]->finalization_barrier = nullptr;
568 process_data[i]->return_value = 0;
570 if (xbt_cfg_get_boolean("smpi/trace-call-location")) {
571 process_data[i]->trace_call_loc = xbt_new(smpi_trace_call_location_t, 1);
575 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
576 // TODO: Implement host/process/thread based counters. This implementation
577 // just always takes the values passed via "default", like this:
578 // "default:COUNTER1:COUNTER2:COUNTER3;".
579 auto it = units2papi_setup.find(papi_default_config_name);
580 if (it != units2papi_setup.end()) {
581 process_data[i]->papi_event_set = it->second.event_set;
582 process_data[i]->papi_counter_data = it->second.counter_data;
583 XBT_DEBUG("Setting PAPI set for process %i", i);
585 process_data[i]->papi_event_set = PAPI_NULL;
586 XBT_DEBUG("No PAPI set for process %i", i);
591 //if the process was launched through smpirun script we generate a global mpi_comm_world
592 //if not, we let MPI_COMM_NULL, and the comm world will be private to each mpi instance
594 group = smpi_group_new(process_count);
595 MPI_COMM_WORLD = smpi_comm_new(group, nullptr);
596 MPI_Attr_put(MPI_COMM_WORLD, MPI_UNIVERSE_SIZE, reinterpret_cast<void *>(process_count));
597 xbt_bar_t bar=xbt_barrier_init(process_count);
599 for (i = 0; i < process_count; i++) {
600 smpi_group_set_mapping(group, i, i);
601 process_data[i]->finalization_barrier = bar;
606 void smpi_global_destroy()
608 int count = smpi_process_count();
611 smpi_bench_destroy();
612 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
613 while (smpi_group_unuse(smpi_comm_group(MPI_COMM_WORLD)) > 0);
614 xbt_barrier_destroy(process_data[0]->finalization_barrier);
616 smpi_deployment_cleanup_instances();
618 for (i = 0; i < count; i++) {
619 if(process_data[i]->comm_self!=MPI_COMM_NULL){
620 smpi_comm_destroy(process_data[i]->comm_self);
622 if(process_data[i]->comm_intra!=MPI_COMM_NULL){
623 smpi_comm_destroy(process_data[i]->comm_intra);
625 xbt_os_timer_free(process_data[i]->timer);
626 xbt_mutex_destroy(process_data[i]->mailboxes_mutex);
627 if (xbt_cfg_get_boolean("smpi/trace-call-location")) {
628 xbt_free(process_data[i]->trace_call_loc);
630 delete process_data[i];
633 process_data = nullptr;
635 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
636 smpi_comm_cleanup_smp(MPI_COMM_WORLD);
637 smpi_comm_cleanup_attributes(MPI_COMM_WORLD);
638 if(smpi_coll_cleanup_callback!=nullptr)
639 smpi_coll_cleanup_callback();
640 xbt_free(MPI_COMM_WORLD);
643 MPI_COMM_WORLD = MPI_COMM_NULL;
645 if (!MC_is_active()) {
646 xbt_os_timer_free(global_timer);
649 xbt_free(index_to_process_data);
650 if(smpi_privatize_global_variables)
651 smpi_destroy_global_memory_segments();
657 void __attribute__ ((weak)) user_main_()
659 xbt_die("Should not be in this smpi_simulated_main");
663 int __attribute__ ((weak)) smpi_simulated_main_(int argc, char **argv)
665 smpi_process_init(&argc, &argv);
670 inline static int smpi_main_wrapper(int argc, char **argv){
671 int ret = smpi_simulated_main_(argc,argv);
673 XBT_WARN("SMPI process did not return 0. Return value : %d", ret);
674 smpi_process_data()->return_value=ret;
679 int __attribute__ ((weak)) main(int argc, char **argv)
681 return smpi_main(smpi_main_wrapper, argc, argv);
687 static void smpi_init_logs(){
689 /* Connect log categories. See xbt/log.c */
691 XBT_LOG_CONNECT(smpi); /* Keep this line as soon as possible in this function: xbt_log_appender_file.c depends on it
692 DO NOT connect this in XBT or so, or it will be useless to xbt_log_appender_file.c */
693 XBT_LOG_CONNECT(instr_smpi);
694 XBT_LOG_CONNECT(smpi_base);
695 XBT_LOG_CONNECT(smpi_bench);
696 XBT_LOG_CONNECT(smpi_coll);
697 XBT_LOG_CONNECT(smpi_colls);
698 XBT_LOG_CONNECT(smpi_comm);
699 XBT_LOG_CONNECT(smpi_dvfs);
700 XBT_LOG_CONNECT(smpi_group);
701 XBT_LOG_CONNECT(smpi_kernel);
702 XBT_LOG_CONNECT(smpi_mpi);
703 XBT_LOG_CONNECT(smpi_mpi_dt);
704 XBT_LOG_CONNECT(smpi_pmpi);
705 XBT_LOG_CONNECT(smpi_replay);
706 XBT_LOG_CONNECT(smpi_rma);
710 static void smpi_init_options(){
711 int gather_id = find_coll_description(mpi_coll_gather_description, xbt_cfg_get_string("smpi/gather"),"gather");
712 mpi_coll_gather_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, int, MPI_Comm)>
713 (mpi_coll_gather_description[gather_id].coll);
715 int allgather_id = find_coll_description(mpi_coll_allgather_description,
716 xbt_cfg_get_string("smpi/allgather"),"allgather");
717 mpi_coll_allgather_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm)>
718 (mpi_coll_allgather_description[allgather_id].coll);
720 int allgatherv_id = find_coll_description(mpi_coll_allgatherv_description,
721 xbt_cfg_get_string("smpi/allgatherv"),"allgatherv");
722 mpi_coll_allgatherv_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm)>
723 (mpi_coll_allgatherv_description[allgatherv_id].coll);
725 int allreduce_id = find_coll_description(mpi_coll_allreduce_description,
726 xbt_cfg_get_string("smpi/allreduce"),"allreduce");
727 mpi_coll_allreduce_fun = reinterpret_cast<int (*)(void *sbuf, void *rbuf, int rcount, MPI_Datatype dtype, MPI_Op op, MPI_Comm comm)>
728 (mpi_coll_allreduce_description[allreduce_id].coll);
730 int alltoall_id = find_coll_description(mpi_coll_alltoall_description,
731 xbt_cfg_get_string("smpi/alltoall"),"alltoall");
732 mpi_coll_alltoall_fun = reinterpret_cast<int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm)>
733 (mpi_coll_alltoall_description[alltoall_id].coll);
735 int alltoallv_id = find_coll_description(mpi_coll_alltoallv_description,
736 xbt_cfg_get_string("smpi/alltoallv"),"alltoallv");
737 mpi_coll_alltoallv_fun = reinterpret_cast<int (*)(void *, int *, int *, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm)>
738 (mpi_coll_alltoallv_description[alltoallv_id].coll);
740 int bcast_id = find_coll_description(mpi_coll_bcast_description, xbt_cfg_get_string("smpi/bcast"),"bcast");
741 mpi_coll_bcast_fun = reinterpret_cast<int (*)(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm com)>
742 (mpi_coll_bcast_description[bcast_id].coll);
744 int reduce_id = find_coll_description(mpi_coll_reduce_description, xbt_cfg_get_string("smpi/reduce"),"reduce");
745 mpi_coll_reduce_fun = reinterpret_cast<int (*)(void *buf, void *rbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm)>
746 (mpi_coll_reduce_description[reduce_id].coll);
748 int reduce_scatter_id =
749 find_coll_description(mpi_coll_reduce_scatter_description,
750 xbt_cfg_get_string("smpi/reduce-scatter"),"reduce_scatter");
751 mpi_coll_reduce_scatter_fun = reinterpret_cast<int (*)(void *sbuf, void *rbuf, int *rcounts,MPI_Datatype dtype, MPI_Op op, MPI_Comm comm)>
752 (mpi_coll_reduce_scatter_description[reduce_scatter_id].coll);
754 int scatter_id = find_coll_description(mpi_coll_scatter_description, xbt_cfg_get_string("smpi/scatter"),"scatter");
755 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)>
756 (mpi_coll_scatter_description[scatter_id].coll);
758 int barrier_id = find_coll_description(mpi_coll_barrier_description, xbt_cfg_get_string("smpi/barrier"),"barrier");
759 mpi_coll_barrier_fun = reinterpret_cast<int (*)(MPI_Comm comm)>
760 (mpi_coll_barrier_description[barrier_id].coll);
762 smpi_coll_cleanup_callback=nullptr;
763 smpi_cpu_threshold = xbt_cfg_get_double("smpi/cpu-threshold");
764 smpi_running_power = xbt_cfg_get_double("smpi/running-power");
765 smpi_privatize_global_variables = xbt_cfg_get_boolean("smpi/privatize-global-variables");
766 if (smpi_cpu_threshold < 0)
767 smpi_cpu_threshold = DBL_MAX;
770 int smpi_main(int (*realmain) (int argc, char *argv[]), int argc, char *argv[])
772 srand(SMPI_RAND_SEED);
774 if (getenv("SMPI_PRETEND_CC") != nullptr) {
775 /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the
776 * configuration tools */
781 TRACE_global_init(&argc, argv);
782 TRACE_add_start_function(TRACE_smpi_alloc);
783 TRACE_add_end_function(TRACE_smpi_release);
785 SIMIX_global_init(&argc, argv);
786 MSG_init(&argc,argv);
788 SMPI_switch_data_segment = smpi_switch_data_segment;
792 // parse the platform file: get the host list
793 SIMIX_create_environment(argv[1]);
794 SIMIX_comm_set_copy_data_callback(&smpi_comm_copy_buffer_callback);
795 SIMIX_function_register_default(realmain);
796 SIMIX_launch_application(argv[2]);
800 smpi_check_options();
802 if(smpi_privatize_global_variables)
803 smpi_initialize_global_memory_segments();
805 /* Clean IO before the run */
809 if (MC_is_active()) {
815 xbt_os_walltimer_stop(global_timer);
816 if (xbt_cfg_get_boolean("smpi/display-timing")){
817 double global_time = xbt_os_timer_elapsed(global_timer);
818 XBT_INFO("Simulated time: %g seconds. \n\n"
819 "The simulation took %g seconds (after parsing and platform setup)\n"
820 "%g seconds were actual computation of the application",
821 SIMIX_get_clock(), global_time , smpi_total_benched_time);
823 if (smpi_total_benched_time/global_time>=0.75)
824 XBT_INFO("More than 75%% of the time was spent inside the application code.\n"
825 "You may want to use sampling functions or trace replay to reduce this.");
828 int count = smpi_process_count();
830 for (i = 0; i < count; i++) {
831 if(process_data[i]->return_value!=0){
832 ret=process_data[i]->return_value;//return first non 0 value
836 smpi_global_destroy();
843 // This function can be called from extern file, to initialize logs, options, and processes of smpi
844 // without the need of smpirun
849 smpi_check_options();
850 if (TRACE_is_enabled() && TRACE_is_configured())
852 if(smpi_privatize_global_variables)
853 smpi_initialize_global_memory_segments();
856 void SMPI_finalize(){
857 smpi_global_destroy();