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. */
8 #include "smpi_mpi_dt_private.h"
10 #include "src/mc/mc_record.h"
11 #include "xbt/replay.h"
12 #include "surf/surf.h"
13 #include "src/simix/smx_private.h"
14 #include "simgrid/sg_config.h"
15 #include "src/mc/mc_replay.h"
16 #include "src/msg/msg_private.h"
17 #include "src/simix/SynchroComm.hpp"
20 #include <float.h> /* DBL_MAX */
25 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_kernel, smpi, "Logging specific to SMPI (kernel)");
27 typedef struct s_smpi_process_data {
31 smx_mailbox_t mailbox;
32 smx_mailbox_t mailbox_small;
33 xbt_mutex_t mailboxes_mutex;
38 void *data; /* user data */
41 int sampling; /* inside an SMPI_SAMPLE_ block? */
43 int replaying; /* is the process replaying a trace */
44 xbt_bar_t finalization_barrier;
46 } s_smpi_process_data_t;
48 static smpi_process_data_t *process_data = NULL;
49 int process_count = 0;
50 int smpi_universe_size = 0;
51 int* index_to_process_data = NULL;
52 extern double smpi_total_benched_time;
53 xbt_os_timer_t global_timer;
54 MPI_Comm MPI_COMM_WORLD = MPI_COMM_UNINITIALIZED;
55 MPI_Errhandler *MPI_ERRORS_RETURN = NULL;
56 MPI_Errhandler *MPI_ERRORS_ARE_FATAL = NULL;
57 MPI_Errhandler *MPI_ERRHANDLER_NULL = NULL;
59 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
61 static char *get_mailbox_name(char *str, int index)
63 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", (int) (sizeof(int) * 2), index);
67 static char *get_mailbox_name_small(char *str, int index)
69 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", (int) (sizeof(int) * 2), index);
73 void smpi_process_init(int *argc, char ***argv)
76 smpi_process_data_t data;
80 proc = SIMIX_process_self();
81 //FIXME: dirty cleanup method to avoid using msg cleanup functions on these processes when using MSG+SMPI
82 SIMIX_process_set_cleanup_function(proc, MSG_process_cleanup_from_SIMIX);
83 char* instance_id = (*argv)[1];
84 int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
85 index = smpi_process_index_of_smx_process(proc);
87 if(!index_to_process_data){
88 index_to_process_data=(int*)xbt_malloc(SIMIX_process_count()*sizeof(int));
91 if(smpi_privatize_global_variables){
92 /* Now using segment index of the process */
93 index = proc->segment_index;
94 /* Done at the process's creation */
95 SMPI_switch_data_segment(index);
98 MPI_Comm* temp_comm_world;
100 smpi_deployment_register_process(instance_id, rank, index, &temp_comm_world, &temp_bar);
101 data = smpi_process_remote_data(index);
102 data->comm_world = temp_comm_world;
103 if(temp_bar != NULL) data->finalization_barrier = temp_bar;
105 data->instance_id = instance_id;
107 //xbt_free(simcall_process_get_data(proc));
109 simdata_process_t simdata = static_cast<simdata_process_t>(simcall_process_get_data(proc));
110 simdata->data = data;
114 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
115 (*argv)[(*argc) - 1] = NULL;
116 (*argv)[(*argc) - 2] = NULL;
121 // set the process attached to the mailbox
122 simcall_mbox_set_receiver(data->mailbox_small, proc);
123 XBT_DEBUG("<%d> New process in the game: %p", index, proc);
125 xbt_assert(smpi_process_data(),
126 "smpi_process_data() returned NULL. You probably gave a NULL parameter to MPI_Init. Although it's required by "
127 "MPI-2, this is currently not supported by SMPI.");
130 void smpi_process_destroy(void)
132 int index = smpi_process_index();
133 if(smpi_privatize_global_variables){
134 smpi_switch_data_segment(index);
136 process_data[index_to_process_data[index]]->state = SMPI_FINALIZED;
137 XBT_DEBUG("<%d> Process left the game", index);
140 /** @brief Prepares the current process for termination. */
141 void smpi_process_finalize(void)
143 // This leads to an explosion of the search graph which cannot be reduced:
144 if(MC_is_active() || MC_record_replay_is_active())
147 int index = smpi_process_index();
148 // wait for all pending asynchronous comms to finish
149 xbt_barrier_wait(process_data[index_to_process_data[index]]->finalization_barrier);
152 /** @brief Check if a process is finalized */
153 int smpi_process_finalized()
155 int index = smpi_process_index();
156 if (index != MPI_UNDEFINED)
157 return (process_data[index_to_process_data[index]]->state == SMPI_FINALIZED);
162 /** @brief Check if a process is initialized */
163 int smpi_process_initialized(void)
165 if (!index_to_process_data){
168 int index = smpi_process_index();
169 return ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state == SMPI_INITIALIZED));
173 /** @brief Mark a process as initialized (=MPI_Init called) */
174 void smpi_process_mark_as_initialized(void)
176 int index = smpi_process_index();
177 if ((index != MPI_UNDEFINED) && (process_data[index_to_process_data[index]]->state != SMPI_FINALIZED))
178 process_data[index_to_process_data[index]]->state = SMPI_INITIALIZED;
181 void smpi_process_set_replaying(int value){
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]]->replaying = value;
187 int smpi_process_get_replaying(){
188 int index = smpi_process_index();
189 if (index != MPI_UNDEFINED)
190 return process_data[index_to_process_data[index]]->replaying;
191 else return _xbt_replay_is_active();
194 int smpi_global_size(void)
196 char *value = getenv("SMPI_GLOBAL_SIZE");
197 xbt_assert(value,"Please set env var SMPI_GLOBAL_SIZE to the expected number of processes.");
199 return xbt_str_parse_int(value, "SMPI_GLOBAL_SIZE contains a non-numerical value: %s");
202 smpi_process_data_t smpi_process_data(void)
204 simdata_process_t simdata = static_cast<simdata_process_t>(SIMIX_process_self_get_data());
205 return static_cast<smpi_process_data_t>(simdata->data);
208 smpi_process_data_t smpi_process_remote_data(int index)
210 return process_data[index_to_process_data[index]];
213 void smpi_process_set_user_data(void *data)
215 smpi_process_data_t process_data = smpi_process_data();
216 process_data->data = data;
219 void *smpi_process_get_user_data()
221 smpi_process_data_t process_data = smpi_process_data();
222 return process_data->data;
225 int smpi_process_count(void)
227 return process_count;
230 int smpi_process_index(void)
232 smpi_process_data_t data = smpi_process_data();
233 //return -1 if not initialized
234 return data ? data->index : MPI_UNDEFINED;
237 MPI_Comm smpi_process_comm_world(void)
239 smpi_process_data_t data = smpi_process_data();
240 //return MPI_COMM_NULL if not initialized
241 return data ? *data->comm_world : MPI_COMM_NULL;
244 smx_mailbox_t smpi_process_mailbox(void)
246 smpi_process_data_t data = smpi_process_data();
247 return data->mailbox;
250 smx_mailbox_t smpi_process_mailbox_small(void)
252 smpi_process_data_t data = smpi_process_data();
253 return data->mailbox_small;
256 xbt_mutex_t smpi_process_mailboxes_mutex(void)
258 smpi_process_data_t data = smpi_process_data();
259 return data->mailboxes_mutex;
262 smx_mailbox_t smpi_process_remote_mailbox(int index)
264 smpi_process_data_t data = smpi_process_remote_data(index);
265 return data->mailbox;
268 smx_mailbox_t smpi_process_remote_mailbox_small(int index)
270 smpi_process_data_t data = smpi_process_remote_data(index);
271 return data->mailbox_small;
274 xbt_mutex_t smpi_process_remote_mailboxes_mutex(int index)
276 smpi_process_data_t data = smpi_process_remote_data(index);
277 return data->mailboxes_mutex;
280 xbt_os_timer_t smpi_process_timer(void)
282 smpi_process_data_t data = smpi_process_data();
286 void smpi_process_simulated_start(void)
288 smpi_process_data_t data = smpi_process_data();
289 data->simulated = SIMIX_get_clock();
292 double smpi_process_simulated_elapsed(void)
294 smpi_process_data_t data = smpi_process_data();
295 return SIMIX_get_clock() - data->simulated;
298 MPI_Comm smpi_process_comm_self(void)
300 smpi_process_data_t data = smpi_process_data();
301 if(data->comm_self==MPI_COMM_NULL){
302 MPI_Group group = smpi_group_new(1);
303 data->comm_self = smpi_comm_new(group, NULL);
304 smpi_group_set_mapping(group, smpi_process_index(), 0);
307 return data->comm_self;
310 MPI_Comm smpi_process_get_comm_intra(void)
312 smpi_process_data_t data = smpi_process_data();
313 return data->comm_intra;
316 void smpi_process_set_comm_intra(MPI_Comm comm)
318 smpi_process_data_t data = smpi_process_data();
319 data->comm_intra = comm;
322 void smpi_process_set_sampling(int s)
324 smpi_process_data_t data = smpi_process_data();
328 int smpi_process_get_sampling(void)
330 smpi_process_data_t data = smpi_process_data();
331 return data->sampling;
334 void print_request(const char *message, MPI_Request request)
336 XBT_VERB("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
337 message, request, request->buf, request->size, request->src, request->dst, request->tag, request->flags);
340 void smpi_comm_copy_buffer_callback(smx_synchro_t synchro, void *buff, size_t buff_size)
342 XBT_DEBUG("Copy the data over");
344 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(synchro);
346 if((smpi_privatize_global_variables) && ((char*)buff >= smpi_start_data_exe)
347 && ((char*)buff < smpi_start_data_exe + smpi_size_data_exe )
349 XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !");
352 smpi_switch_data_segment(((smpi_process_data_t)(((simdata_process_t)SIMIX_process_get_data(comm->src_proc))->data))->index);
353 tmpbuff = (void*)xbt_malloc(buff_size);
354 memcpy(tmpbuff, buff, buff_size);
357 if((smpi_privatize_global_variables) && ((char*)comm->dst_buff >= smpi_start_data_exe)
358 && ((char*)comm->dst_buff < smpi_start_data_exe + smpi_size_data_exe )){
359 XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment");
360 smpi_switch_data_segment(((smpi_process_data_t)(((simdata_process_t)SIMIX_process_get_data(comm->dst_proc))->data))->index);
363 memcpy(comm->dst_buff, tmpbuff, buff_size);
364 if (comm->detached) {
365 // if this is a detached send, the source buffer was duplicated by SMPI
366 // sender to make the original buffer available to the application ASAP
368 //It seems that the request is used after the call there this should be free somewhere else but where???
369 //xbt_free(comm->comm.src_data);// inside SMPI the request is kept inside the user data and should be free
370 comm->src_buff = NULL;
373 if(tmpbuff!=buff)xbt_free(tmpbuff);
376 void smpi_comm_null_copy_buffer_callback(smx_synchro_t comm, void *buff, size_t buff_size)
381 static void smpi_check_options(){
382 //check correctness of MPI parameters
384 xbt_assert(xbt_cfg_get_int("smpi/async-small-thresh") <= xbt_cfg_get_int("smpi/send-is-detached-thresh"));
386 if (xbt_cfg_is_default_value("smpi/running-power")) {
387 XBT_INFO("You did not set the power of the host running the simulation. "
388 "The timings will certainly not be accurate. "
389 "Use the option \"--cfg=smpi/running-power:<flops>\" to set its value."
390 "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information.");
394 int smpi_enabled(void) {
395 return process_data != NULL;
398 void smpi_global_init(void)
402 char name[MAILBOX_NAME_MAXLEN];
405 if (!MC_is_active()) {
406 global_timer = xbt_os_timer_new();
407 xbt_os_walltimer_start(global_timer);
409 if (process_count == 0){
410 process_count = SIMIX_process_count();
413 smpi_universe_size = process_count;
414 process_data = xbt_new0(smpi_process_data_t, process_count);
415 for (i = 0; i < process_count; i++) {
416 process_data[i] = xbt_new(s_smpi_process_data_t, 1);
417 //process_data[i]->index = i;
418 process_data[i]->argc = NULL;
419 process_data[i]->argv = NULL;
420 process_data[i]->mailbox = simcall_mbox_create(get_mailbox_name(name, i));
421 process_data[i]->mailbox_small = simcall_mbox_create(get_mailbox_name_small(name, i));
422 process_data[i]->mailboxes_mutex = xbt_mutex_init();
423 process_data[i]->timer = xbt_os_timer_new();
425 MC_ignore_heap(process_data[i]->timer, xbt_os_timer_size());
426 process_data[i]->comm_self = MPI_COMM_NULL;
427 process_data[i]->comm_intra = MPI_COMM_NULL;
428 process_data[i]->comm_world = NULL;
429 process_data[i]->state = SMPI_UNINITIALIZED;
430 process_data[i]->sampling = 0;
431 process_data[i]->finalization_barrier = NULL;
432 process_data[i]->return_value = 0;
434 //if the process was launched through smpirun script we generate a global mpi_comm_world
435 //if not, we let MPI_COMM_NULL, and the comm world will be private to each mpi instance
437 group = smpi_group_new(process_count);
438 MPI_COMM_WORLD = smpi_comm_new(group, NULL);
439 MPI_Attr_put(MPI_COMM_WORLD, MPI_UNIVERSE_SIZE, (void *)(MPI_Aint)process_count);
440 xbt_bar_t bar=xbt_barrier_init(process_count);
442 for (i = 0; i < process_count; i++) {
443 smpi_group_set_mapping(group, i, i);
444 process_data[i]->finalization_barrier = bar;
449 void smpi_global_destroy(void)
451 int count = smpi_process_count();
454 smpi_bench_destroy();
455 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
456 while (smpi_group_unuse(smpi_comm_group(MPI_COMM_WORLD)) > 0);
457 xbt_barrier_destroy(process_data[0]->finalization_barrier);
459 smpi_deployment_cleanup_instances();
461 for (i = 0; i < count; i++) {
462 if(process_data[i]->comm_self!=MPI_COMM_NULL){
463 smpi_comm_destroy(process_data[i]->comm_self);
465 if(process_data[i]->comm_intra!=MPI_COMM_NULL){
466 smpi_comm_destroy(process_data[i]->comm_intra);
468 xbt_os_timer_free(process_data[i]->timer);
469 xbt_mutex_destroy(process_data[i]->mailboxes_mutex);
470 xbt_free(process_data[i]);
472 xbt_free(process_data);
475 if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){
476 smpi_comm_cleanup_smp(MPI_COMM_WORLD);
477 smpi_comm_cleanup_attributes(MPI_COMM_WORLD);
478 if(smpi_coll_cleanup_callback!=NULL)
479 smpi_coll_cleanup_callback();
480 xbt_free(MPI_COMM_WORLD);
483 MPI_COMM_WORLD = MPI_COMM_NULL;
485 if (!MC_is_active()) {
486 xbt_os_timer_free(global_timer);
489 xbt_free(index_to_process_data);
490 if(smpi_privatize_global_variables)
491 smpi_destroy_global_memory_segments();
497 void __attribute__ ((weak)) user_main_()
499 xbt_die("Should not be in this smpi_simulated_main");
503 int __attribute__ ((weak)) smpi_simulated_main_(int argc, char **argv)
505 smpi_process_init(&argc, &argv);
510 inline static int smpi_main_wrapper(int argc, char **argv){
511 int ret = smpi_simulated_main_(argc,argv);
513 XBT_WARN("SMPI process did not return 0. Return value : %d", ret);
514 smpi_process_data()->return_value=ret;
519 int __attribute__ ((weak)) main(int argc, char **argv)
521 return smpi_main(smpi_main_wrapper, argc, argv);
527 static void smpi_init_logs(){
529 /* Connect log categories. See xbt/log.c */
531 XBT_LOG_CONNECT(smpi); /* Keep this line as soon as possible in this function: xbt_log_appender_file.c depends on it
532 DO NOT connect this in XBT or so, or it will be useless to xbt_log_appender_file.c */
533 XBT_LOG_CONNECT(instr_smpi);
534 XBT_LOG_CONNECT(smpi_base);
535 XBT_LOG_CONNECT(smpi_bench);
536 XBT_LOG_CONNECT(smpi_coll);
537 XBT_LOG_CONNECT(smpi_colls);
538 XBT_LOG_CONNECT(smpi_comm);
539 XBT_LOG_CONNECT(smpi_dvfs);
540 XBT_LOG_CONNECT(smpi_group);
541 XBT_LOG_CONNECT(smpi_kernel);
542 XBT_LOG_CONNECT(smpi_mpi);
543 XBT_LOG_CONNECT(smpi_mpi_dt);
544 XBT_LOG_CONNECT(smpi_pmpi);
545 XBT_LOG_CONNECT(smpi_replay);
546 XBT_LOG_CONNECT(smpi_rma);
550 static void smpi_init_options(){
551 int gather_id = find_coll_description(mpi_coll_gather_description, xbt_cfg_get_string("smpi/gather"),"gather");
552 mpi_coll_gather_fun = (int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, int, MPI_Comm))
553 mpi_coll_gather_description[gather_id].coll;
555 int allgather_id = find_coll_description(mpi_coll_allgather_description,
556 xbt_cfg_get_string("smpi/allgather"),"allgather");
557 mpi_coll_allgather_fun = (int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm))
558 mpi_coll_allgather_description[allgather_id].coll;
560 int allgatherv_id = find_coll_description(mpi_coll_allgatherv_description,
561 xbt_cfg_get_string("smpi/allgatherv"),"allgatherv");
562 mpi_coll_allgatherv_fun = (int (*)(void *, int, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm))
563 mpi_coll_allgatherv_description[allgatherv_id].coll;
565 int allreduce_id = find_coll_description(mpi_coll_allreduce_description,
566 xbt_cfg_get_string("smpi/allreduce"),"allreduce");
567 mpi_coll_allreduce_fun = (int (*)(void *sbuf, void *rbuf, int rcount, MPI_Datatype dtype, MPI_Op op, MPI_Comm comm))
568 mpi_coll_allreduce_description[allreduce_id].coll;
570 int alltoall_id = find_coll_description(mpi_coll_alltoall_description,
571 xbt_cfg_get_string("smpi/alltoall"),"alltoall");
572 mpi_coll_alltoall_fun = (int (*)(void *, int, MPI_Datatype, void *, int, MPI_Datatype, MPI_Comm))
573 mpi_coll_alltoall_description[alltoall_id].coll;
575 int alltoallv_id = find_coll_description(mpi_coll_alltoallv_description,
576 xbt_cfg_get_string("smpi/alltoallv"),"alltoallv");
577 mpi_coll_alltoallv_fun = (int (*)(void *, int *, int *, MPI_Datatype, void *, int *, int *, MPI_Datatype, MPI_Comm))
578 mpi_coll_alltoallv_description[alltoallv_id].coll;
580 int bcast_id = find_coll_description(mpi_coll_bcast_description, xbt_cfg_get_string("smpi/bcast"),"bcast");
581 mpi_coll_bcast_fun = (int (*)(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm com))
582 mpi_coll_bcast_description[bcast_id].coll;
584 int reduce_id = find_coll_description(mpi_coll_reduce_description, xbt_cfg_get_string("smpi/reduce"),"reduce");
585 mpi_coll_reduce_fun = (int (*)(void *buf, void *rbuf, int count, MPI_Datatype datatype, MPI_Op op, int root,
586 MPI_Comm comm)) mpi_coll_reduce_description[reduce_id].coll;
588 int reduce_scatter_id =
589 find_coll_description(mpi_coll_reduce_scatter_description,
590 xbt_cfg_get_string("smpi/reduce-scatter"),"reduce_scatter");
591 mpi_coll_reduce_scatter_fun = (int (*)(void *sbuf, void *rbuf, int *rcounts,MPI_Datatype dtype, MPI_Op op,
592 MPI_Comm comm)) mpi_coll_reduce_scatter_description[reduce_scatter_id].coll;
594 int scatter_id = find_coll_description(mpi_coll_scatter_description, xbt_cfg_get_string("smpi/scatter"),"scatter");
595 mpi_coll_scatter_fun = (int (*)(void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf,
596 int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm))
597 mpi_coll_scatter_description[scatter_id].coll;
599 int barrier_id = find_coll_description(mpi_coll_barrier_description, xbt_cfg_get_string("smpi/barrier"),"barrier");
600 mpi_coll_barrier_fun = (int (*)(MPI_Comm comm)) mpi_coll_barrier_description[barrier_id].coll;
602 smpi_coll_cleanup_callback=NULL;
603 smpi_cpu_threshold = xbt_cfg_get_double("smpi/cpu-threshold");
604 smpi_running_power = xbt_cfg_get_double("smpi/running-power");
605 smpi_privatize_global_variables = xbt_cfg_get_boolean("smpi/privatize-global-variables");
606 if (smpi_cpu_threshold < 0)
607 smpi_cpu_threshold = DBL_MAX;
610 int smpi_main(int (*realmain) (int argc, char *argv[]), int argc, char *argv[])
612 srand(SMPI_RAND_SEED);
614 if (getenv("SMPI_PRETEND_CC") != NULL) {
615 /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the
616 * configuration tools */
621 TRACE_global_init(&argc, argv);
622 TRACE_add_start_function(TRACE_smpi_alloc);
623 TRACE_add_end_function(TRACE_smpi_release);
625 SIMIX_global_init(&argc, argv);
626 MSG_init(&argc,argv);
628 SMPI_switch_data_segment = smpi_switch_data_segment;
632 // parse the platform file: get the host list
633 SIMIX_create_environment(argv[1]);
634 SIMIX_comm_set_copy_data_callback(&smpi_comm_copy_buffer_callback);
635 SIMIX_function_register_default(realmain);
636 SIMIX_launch_application(argv[2]);
640 smpi_check_options();
642 if(smpi_privatize_global_variables)
643 smpi_initialize_global_memory_segments();
645 /* Clean IO before the run */
649 if (MC_is_active()) {
655 xbt_os_walltimer_stop(global_timer);
656 if (xbt_cfg_get_boolean("smpi/display-timing")){
657 double global_time = xbt_os_timer_elapsed(global_timer);
658 XBT_INFO("Simulated time: %g seconds. \n\n"
659 "The simulation took %g seconds (after parsing and platform setup)\n"
660 "%g seconds were actual computation of the application",
661 SIMIX_get_clock(), global_time , smpi_total_benched_time);
663 if (smpi_total_benched_time/global_time>=0.75)
664 XBT_INFO("More than 75%% of the time was spent inside the application code.\n"
665 "You may want to use sampling functions or trace replay to reduce this.");
668 int count = smpi_process_count();
670 for (i = 0; i < count; i++) {
671 if(process_data[i]->return_value!=0){
672 ret=process_data[i]->return_value;//return first non 0 value
676 smpi_global_destroy();
683 // This function can be called from extern file, to initialize logs, options, and processes of smpi
684 // without the need of smpirun
689 smpi_check_options();
690 if (TRACE_is_enabled() && TRACE_is_configured())
692 if(smpi_privatize_global_variables)
693 smpi_initialize_global_memory_segments();
696 void SMPI_finalize(){
697 smpi_global_destroy();