1 /* Copyright (c) 2009-2010, 2012-2015. 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. */
7 /* sg_config: configuration infrastructure for the simulation world */
10 #include "xbt/config.h"
12 #include "xbt/mallocator.h"
15 #include "xbt/sysdep.h"
16 #include "surf/surf.h"
17 #include "surf/maxmin.h"
18 #include "instr/instr_interface.h"
19 #include "simgrid/simix.h"
20 #include "simgrid/sg_config.h"
21 #include "simgrid_config.h" /* what was compiled in? */
23 #include "smpi/smpi_interface.h"
26 #include "simgrid/instr.h"
27 #include "src/mc/mc_replay.h"
29 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf, "About the configuration of SimGrid");
32 /* 0: beginning of time (config cannot be changed yet);
33 * 1: initialized: cfg_set created (config can now be changed);
34 * 2: configured: command line parsed and config part of platform file was
35 * integrated also, platform construction ongoing or done.
36 * (Config cannot be changed anymore!)
38 int _sg_cfg_init_status = 0;
40 /* instruct the upper layer (simix or simdag) to exit as soon as possible */
41 int _sg_cfg_exit_asap = 0;
43 #define sg_cfg_exit_early() do { _sg_cfg_exit_asap = 1; return; } while (0)
45 /* Parse the command line, looking for options */
46 static void sg_config_cmd_line(int *argc, char **argv)
52 for (j = i = 1; i < *argc; i++) {
53 if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
54 opt = strchr(argv[i], '=');
57 xbt_cfg_set_parse(opt);
58 XBT_DEBUG("Did apply '%s' as config setting", opt);
59 } else if (!strcmp(argv[i], "--version")) {
60 printf("%s\n", SIMGRID_VERSION_STRING);
62 } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
63 printf("Description of the configuration accepted by this simulator:\n");
67 "Each of these configurations can be used by adding\n"
68 " --cfg=<option name>:<option value>\n"
69 "to the command line.\n"
71 "For more information, please refer to:\n"
72 " --help-aliases for the list of all option aliases.\n"
73 " --help-logs and --help-log-categories for the details of logging output.\n"
74 " --help-models for a list of all models known by this simulator.\n"
75 " --help-tracing for the details of all tracing options known by this simulator.\n"
76 " --version to get SimGrid version information.\n"
80 } else if (!strcmp(argv[i], "--help-aliases")) {
81 printf("Here is a list of all deprecated option names, with their replacement.\n");
83 printf("Please consider using the recent names\n");
85 } else if (!strcmp(argv[i], "--help-models")) {
88 model_help("host", surf_host_model_description);
90 model_help("CPU", surf_cpu_model_description);
92 model_help("network", surf_network_model_description);
93 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
94 for (k = 0; surf_optimization_mode_description[k].name; k++)
96 surf_optimization_mode_description[k].name,
97 surf_optimization_mode_description[k].description);
98 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
100 } else if (!strcmp(argv[i], "--help-tracing")) {
115 /* callback of the plugin variable */
116 static void _sg_cfg_cb__plugin(const char *name)
118 xbt_assert(_sg_cfg_init_status < 2, "Cannot load a plugin after the initialization");
120 char *val = xbt_cfg_get_string(name);
124 if (!strcmp(val, "help")) {
125 model_help("plugin", surf_plugin_description);
129 /* New Module missing */
130 int plugin_id = find_model_description(surf_plugin_description, val);
131 surf_plugin_description[plugin_id].model_init_preparse();
134 /* callback of the host/model variable */
135 static void _sg_cfg_cb__host_model(const char *name)
137 xbt_assert(_sg_cfg_init_status < 2, "Cannot change the model after the initialization");
139 char *val = xbt_cfg_get_string(name);
140 if (!strcmp(val, "help")) {
141 model_help("host", surf_host_model_description);
145 /* Make sure that the model exists */
146 find_model_description(surf_host_model_description, val);
149 /* callback of the vm/model variable */
150 static void _sg_cfg_cb__vm_model(const char *name)
152 xbt_assert(_sg_cfg_init_status < 2, "Cannot change the model after the initialization");
154 char *val = xbt_cfg_get_string(name);
155 if (!strcmp(val, "help")) {
156 model_help("vm", surf_vm_model_description);
160 /* Make sure that the model exists */
161 find_model_description(surf_vm_model_description, val);
164 /* callback of the cpu/model variable */
165 static void _sg_cfg_cb__cpu_model(const char *name)
167 xbt_assert(_sg_cfg_init_status < 2, "Cannot change the model after the initialization");
169 char *val = xbt_cfg_get_string(name);
170 if (!strcmp(val, "help")) {
171 model_help("CPU", surf_cpu_model_description);
175 /* New Module missing */
176 find_model_description(surf_cpu_model_description, val);
179 /* callback of the cpu/model variable */
180 static void _sg_cfg_cb__optimization_mode(const char *name)
184 xbt_assert(_sg_cfg_init_status < 2,
185 "Cannot change the model after the initialization");
187 val = xbt_cfg_get_string(name);
189 if (!strcmp(val, "help")) {
190 model_help("optimization", surf_optimization_mode_description);
194 /* New Module missing */
195 find_model_description(surf_optimization_mode_description, val);
198 /* callback of the cpu/model variable */
199 static void _sg_cfg_cb__storage_mode(const char *name)
203 xbt_assert(_sg_cfg_init_status < 2,
204 "Cannot change the model after the initialization");
206 val = xbt_cfg_get_string(name);
208 if (!strcmp(val, "help")) {
209 model_help("storage", surf_storage_model_description);
213 /* New Module missing */
214 find_model_description(surf_storage_model_description, val);
217 /* callback of the network_model variable */
218 static void _sg_cfg_cb__network_model(const char *name)
222 xbt_assert(_sg_cfg_init_status < 2,
223 "Cannot change the model after the initialization");
225 val = xbt_cfg_get_string(name);
227 if (!strcmp(val, "help")) {
228 model_help("network", surf_network_model_description);
232 /* New Module missing */
233 find_model_description(surf_network_model_description, val);
236 /* callbacks of the network models values */
237 static void _sg_cfg_cb__tcp_gamma(const char *name)
239 sg_tcp_gamma = xbt_cfg_get_double(name);
242 static void _sg_cfg_cb__maxmin_precision(const char* name)
244 sg_maxmin_precision = xbt_cfg_get_double(name);
247 static void _sg_cfg_cb__surf_precision(const char* name)
249 sg_surf_precision = xbt_cfg_get_double(name);
252 static void _sg_cfg_cb__sender_gap(const char* name)
254 sg_sender_gap = xbt_cfg_get_double(name);
257 static void _sg_cfg_cb__latency_factor(const char *name)
259 sg_latency_factor = xbt_cfg_get_double(name);
262 static void _sg_cfg_cb__bandwidth_factor(const char *name)
264 sg_bandwidth_factor = xbt_cfg_get_double(name);
267 static void _sg_cfg_cb__weight_S(const char *name)
269 sg_weight_S_parameter = xbt_cfg_get_double(name);
273 /* callback of the mpi collectives: simply check that this is a valid name. It will be picked up in smpi_global.cpp */
274 static void _check_coll(const char *category,
275 s_mpi_coll_description_t * table,
278 xbt_assert(_sg_cfg_init_status < 2, "Cannot change the collective algorithm after the initialization");
280 char *val = xbt_cfg_get_string(name);
282 if (val && !strcmp(val, "help")) {
283 coll_help(category, table);
287 find_coll_description(table, val, category);
289 static void _check_coll_gather(const char *name){
290 _check_coll("gather", mpi_coll_gather_description, name);
292 static void _check_coll_allgather(const char *name){
293 _check_coll("allgather", mpi_coll_allgather_description, name);
295 static void _check_coll_allgatherv(const char *name){
296 _check_coll("allgatherv", mpi_coll_allgatherv_description, name);
298 static void _check_coll_allreduce(const char *name)
300 _check_coll("allreduce", mpi_coll_allreduce_description, name);
302 static void _check_coll_alltoall(const char *name)
304 _check_coll("alltoall", mpi_coll_alltoall_description, name);
306 static void _check_coll_alltoallv(const char *name)
308 _check_coll("alltoallv", mpi_coll_alltoallv_description, name);
310 static void _check_coll_bcast(const char *name)
312 _check_coll("bcast", mpi_coll_bcast_description, name);
314 static void _check_coll_reduce(const char *name)
316 _check_coll("reduce", mpi_coll_reduce_description, name);
318 static void _check_coll_reduce_scatter(const char *name){
319 _check_coll("reduce_scatter", mpi_coll_reduce_scatter_description, name);
321 static void _check_coll_scatter(const char *name){
322 _check_coll("scatter", mpi_coll_scatter_description, name);
324 static void _check_coll_barrier(const char *name){
325 _check_coll("barrier", mpi_coll_barrier_description, name);
328 static void _sg_cfg_cb__wtime_sleep(const char *name){
329 smpi_wtime_sleep = xbt_cfg_get_double(name);
332 static void _sg_cfg_cb__iprobe_sleep(const char *name){
333 smpi_iprobe_sleep = xbt_cfg_get_double(name);
336 static void _sg_cfg_cb__test_sleep(const char *name){
337 smpi_test_sleep = xbt_cfg_get_double(name);
344 /* callback of the inclusion path */
345 static void _sg_cfg_cb__surf_path(const char *name)
347 char *path = xbt_strdup(xbt_cfg_get_string(name));
348 if (path[0]) // ignore ""
349 xbt_dynar_push(surf_path, &path);
352 /* callback to decide if we want to use the model-checking */
353 #include "src/xbt_modinter.h"
356 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
357 extern int _sg_do_model_check_record;
360 static void _sg_cfg_cb_model_check_replay(const char *name) {
361 MC_record_path = xbt_cfg_get_string(name);
365 static void _sg_cfg_cb_model_check_record(const char *name) {
366 _sg_do_model_check_record = xbt_cfg_get_boolean(name);
370 extern int _sg_do_verbose_exit;
372 static void _sg_cfg_cb_verbose_exit(const char *name)
374 _sg_do_verbose_exit = xbt_cfg_get_boolean(name);
377 extern int _sg_do_clean_atexit;
379 static void _sg_cfg_cb_clean_atexit(const char *name)
381 _sg_do_clean_atexit = xbt_cfg_get_boolean(name);
384 static void _sg_cfg_cb_context_factory(const char *name)
386 smx_context_factory_name = xbt_cfg_get_string(name);
389 static void _sg_cfg_cb_context_stack_size(const char *name)
391 smx_context_stack_size_was_set = 1;
392 smx_context_stack_size = xbt_cfg_get_int(name) * 1024;
395 static void _sg_cfg_cb_context_guard_size(const char *name)
397 smx_context_guard_size_was_set = 1;
398 smx_context_guard_size = xbt_cfg_get_int(name) * xbt_pagesize;
401 static void _sg_cfg_cb_contexts_nthreads(const char *name)
403 SIMIX_context_set_nthreads(xbt_cfg_get_int(name));
406 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name)
408 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(name));
411 static void _sg_cfg_cb_contexts_parallel_mode(const char *name)
413 const char* mode_name = xbt_cfg_get_string(name);
414 if (!strcmp(mode_name, "posix")) {
415 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
417 else if (!strcmp(mode_name, "futex")) {
418 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
420 else if (!strcmp(mode_name, "busy_wait")) {
421 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
424 xbt_die("Command line setting of the parallel synchronization mode should "
425 "be one of \"posix\", \"futex\" or \"busy_wait\"");
429 static void _sg_cfg_cb__surf_network_coordinates(const char *name)
431 static int already_set = 0;
432 int val = xbt_cfg_get_boolean(name);
435 COORD_HOST_LEVEL = sg_host_extension_create(xbt_dynar_free_voidp);
436 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
441 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
444 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name)
446 sg_network_crosstraffic = xbt_cfg_get_boolean(name);
449 /* build description line with possible values */
450 static void describe_model(char *result,
451 const s_surf_model_description_t model_description[],
453 const char *description)
456 sprintf(result, "%s. Possible values: %s", description,
457 model_description[0].name ? model_description[0].name : "n/a");
459 for (i = 1; model_description[i].name; i++)
460 p += sprintf(p, ", %s", model_description[i].name);
462 ".\n (use 'help' as a value to see the long description of each %s)",
466 /* create the config set, register what should be and parse the command line*/
467 void sg_config_init(int *argc, char **argv)
469 char description[1024];
471 /* Create the configuration support */
472 if (_sg_cfg_init_status == 0) { /* Only create stuff if not already inited */
474 /* Plugins configuration */
475 describe_model(description, surf_plugin_description, "plugin", "The plugins");
476 xbt_cfg_register_string("plugin", nullptr, &_sg_cfg_cb__plugin, description);
478 describe_model(description, surf_cpu_model_description, "model", "The model to use for the CPU");
479 xbt_cfg_register_string("cpu/model", "Cas01", &_sg_cfg_cb__cpu_model, description);
481 describe_model(description, surf_optimization_mode_description, "optimization mode", "The optimization modes to use for the CPU");
482 xbt_cfg_register_string("cpu/optim", "Lazy", &_sg_cfg_cb__optimization_mode, description);
484 describe_model(description, surf_storage_model_description, "model", "The model to use for the storage");
485 xbt_cfg_register_string("storage/model", "default", &_sg_cfg_cb__storage_mode, description);
487 describe_model(description, surf_network_model_description, "model", "The model to use for the network");
488 xbt_cfg_register_string("network/model", "LV08", &_sg_cfg_cb__network_model, description);
490 describe_model(description, surf_optimization_mode_description, "optimization mode", "The optimization modes to use for the network");
491 xbt_cfg_register_string("network/optim", "Lazy", &_sg_cfg_cb__optimization_mode, description);
493 describe_model(description, surf_host_model_description, "model", "The model to use for the host");
494 xbt_cfg_register_string("host/model", "default", &_sg_cfg_cb__host_model, description);
496 describe_model(description, surf_vm_model_description, "model", "The model to use for the vm");
497 xbt_cfg_register_string("vm/model", "default", &_sg_cfg_cb__vm_model, description);
499 xbt_cfg_register_double("network/TCP_gamma", 4194304.0, _sg_cfg_cb__tcp_gamma,
500 "Size of the biggest TCP window (cat /proc/sys/net/ipv4/tcp_[rw]mem for recv/send window; Use the last given value, which is the max window size)");
501 xbt_cfg_register_double("surf/precision", 0.00001, _sg_cfg_cb__surf_precision,
502 "Numerical precision used when updating simulation times (in seconds)");
503 xbt_cfg_register_double("maxmin/precision", 0.00001, _sg_cfg_cb__maxmin_precision,
504 "Numerical precision used when computing resource sharing (in ops/sec or bytes/sec)");
506 /* The parameters of network models */
508 xbt_cfg_register_double("network/sender_gap", NAN, _sg_cfg_cb__sender_gap,
509 "Minimum gap between two overlapping sends"); /* real default for "network/sender_gap" is set in network_smpi.cpp */
510 xbt_cfg_register_double("network/latency_factor", 1.0, _sg_cfg_cb__latency_factor,
511 "Correction factor to apply to the provided latency (default value set by network model)");
512 xbt_cfg_register_double("network/bandwidth_factor", 1.0, _sg_cfg_cb__bandwidth_factor, "Correction factor to apply to the provided bandwidth (default value set by network model)");
513 xbt_cfg_register_double("network/weight_S", NAN, _sg_cfg_cb__weight_S, /* real default for "network/weight_S" is set in network_*.cpp */
514 "Correction factor to apply to the weight of competing streams (default value set by network model)");
517 xbt_cfg_register_string("path", "", _sg_cfg_cb__surf_path, "Lookup path for inclusions in platform and deployment XML files");
519 xbt_cfg_register_boolean("cpu/maxmin_selective_update", "no", NULL,
520 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)");
521 xbt_cfg_register_boolean("network/maxmin_selective_update", "no", NULL,
522 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)");
523 /* Replay (this part is enabled even if MC it disabled) */
524 xbt_cfg_register_string("model-check/replay", nullptr, _sg_cfg_cb_model_check_replay,
525 "Model-check path to replay (as reported by SimGrid when a violation is reported)");
528 /* do model-checking-record */
529 xbt_cfg_register_boolean("model-check/record", "no", _sg_cfg_cb_model_check_record, "Record the model-checking paths");
531 xbt_cfg_register_int("model-check/checkpoint", 0, _mc_cfg_cb_checkpoint,
532 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
533 "If value=1, one checkpoint is saved for each step => faster verification, but huge memory consumption; higher values are good compromises between speed and memory consumption.");
535 xbt_cfg_register_boolean("model-check/sparse_checkpoint", "no", _mc_cfg_cb_sparse_checkpoint, "Use sparse per-page snapshots.");
536 xbt_cfg_register_boolean("model-check/soft-dirty", "no", _mc_cfg_cb_soft_dirty, "Use sparse per-page snapshots.");
537 xbt_cfg_register_boolean("model-check/ksm", "no", _mc_cfg_cb_ksm, "Kernel same-page merging");
539 xbt_cfg_register_string("model-check/property","", _mc_cfg_cb_property,
540 "Name of the file containing the property, as formated by the ltl2ba program.");
541 xbt_cfg_register_boolean("model-check/communications_determinism", "no", _mc_cfg_cb_comms_determinism,
542 "Whether to enable the detection of communication determinism");
544 xbt_cfg_register_boolean("model-check/send_determinism", "no", _mc_cfg_cb_send_determinism,
545 "Enable/disable the detection of send-determinism in the communications schemes");
547 /* Specify the kind of model-checking reduction */
548 xbt_cfg_register_string("model-check/reduction", "dpor", _mc_cfg_cb_reduce,
549 "Specify the kind of exploration reduction (either none or DPOR)");
550 xbt_cfg_register_boolean("model-check/timeout", "no", _mc_cfg_cb_timeout,
551 "Whether to enable timeouts for wait requests");
553 xbt_cfg_register_boolean("model-check/hash", "no", _mc_cfg_cb_hash, "Whether to enable state hash for state comparison (experimental)");
554 xbt_cfg_register_boolean("model-check/snapshot_fds", "no", _mc_cfg_cb_snapshot_fds,
555 "Whether file descriptors must be snapshoted (currently unusable)");
556 xbt_cfg_register_int("model-check/max_depth", 1000, _mc_cfg_cb_max_depth, "Maximal exploration depth (default: 1000)");
557 xbt_cfg_register_int("model-check/visited", 0, _mc_cfg_cb_visited,
558 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored. If value=0 (the default), all states are stored.");
560 xbt_cfg_register_string("model-check/dot_output", "", _mc_cfg_cb_dot_output, "Name of dot output file corresponding to graph state");
561 xbt_cfg_register_boolean("model-check/termination", "no", _mc_cfg_cb_termination, "Whether to enable non progressive cycle detection");
564 xbt_cfg_register_boolean("verbose-exit", "yes", _sg_cfg_cb_verbose_exit, "Activate the \"do nothing\" mode in Ctrl-C");
566 /* context factory */
567 const char *dflt_ctx_fact = "thread";
569 char *p = description +
571 "Context factory to use in SIMIX. Possible values: %s",
573 #if HAVE_UCONTEXT_CONTEXTS
574 dflt_ctx_fact = "ucontext";
575 p += sprintf(p, ", %s", dflt_ctx_fact);
577 #if HAVE_RAW_CONTEXTS
578 dflt_ctx_fact = "raw";
579 p += sprintf(p, ", %s", dflt_ctx_fact);
583 xbt_cfg_register_string("contexts/factory", dflt_ctx_fact, _sg_cfg_cb_context_factory, description);
585 xbt_cfg_register_int("contexts/stack_size", 8*1024, _sg_cfg_cb_context_stack_size, "Stack size of contexts in KiB");
586 /* (FIXME: this is unpleasant) Reset this static variable that was altered when setting the default value. */
587 smx_context_stack_size_was_set = 0;
589 /* guard size for contexts stacks in memory pages */
590 xbt_cfg_register_int("contexts/guard_size",
591 #if defined(_WIN32) || (PTH_STACKGROWTH != -1)
596 _sg_cfg_cb_context_guard_size, "Guard size for contexts stacks in memory pages");
597 /* No, it was not set yet (the above setdefault() changed this to 1). */
598 smx_context_guard_size_was_set = 0;
600 xbt_cfg_register_int("contexts/nthreads", 1, _sg_cfg_cb_contexts_nthreads, "Number of parallel threads used to execute user contexts");
602 xbt_cfg_register_int("contexts/parallel_threshold", 2, _sg_cfg_cb_contexts_parallel_threshold,
603 "Minimal number of user contexts to be run in parallel (raw contexts only)");
605 /* synchronization mode for parallel user contexts */
607 xbt_cfg_register_string("contexts/synchro", "futex", _sg_cfg_cb_contexts_parallel_mode,
608 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)");
609 #else //No futex on mac and posix is unimplememted yet
610 xbt_cfg_register_string("contexts/synchro", "busy_wait", _sg_cfg_cb_contexts_parallel_mode,
611 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)");
614 xbt_cfg_register_boolean("network/coordinates", "no", _sg_cfg_cb__surf_network_coordinates,
615 "Whether we use a coordinate-based routing (as Vivaldi)");
617 xbt_cfg_register_boolean("network/crosstraffic", "yes", _sg_cfg_cb__surf_network_crosstraffic,
618 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)");
621 xbt_cfg_register_string("ns3/TcpModel", "default", NULL, "The ns3 tcp model can be : NewReno or Reno or Tahoe");
624 //For smpi/bw_factor and smpi/lat_factor
625 // SMPI model can be used without enable_smpi, so keep this out of the ifdef.
626 xbt_cfg_register_string("smpi/bw_factor",
627 "65472:0.940694;15424:0.697866;9376:0.58729;5776:1.08739;3484:0.77493;1426:0.608902;732:0.341987;257:0.338112;0:0.812084", NULL,
628 "Bandwidth factors for smpi. Format: 'threshold0:value0;threshold1:value1;...;thresholdN:valueN', meaning if(size >=thresholdN ) return valueN.");
630 xbt_cfg_register_string("smpi/lat_factor",
631 "65472:11.6436;15424:3.48845;9376:2.59299;5776:2.18796;3484:1.88101;1426:1.61075;732:1.9503;257:1.95341;0:2.01467", NULL, "Latency factors for smpi.");
633 xbt_cfg_register_string("smpi/IB_penalty_factors", "0.965;0.925;1.35", NULL,
634 "Correction factor to communications using Infiniband model with contention (default value based on Stampede cluster profiling)");
637 xbt_cfg_register_double("smpi/running_power", 20000.0, NULL, "Power of the host running the simulation (in flop/s). Used to bench the operations.");
638 xbt_cfg_register_boolean("smpi/display_timing", "no", NULL, "Whether we should display the timing after simulation.");
639 xbt_cfg_register_boolean("smpi/simulate_computation", "yes", NULL, "Whether the computational part of the simulated application should be simulated.");
640 xbt_cfg_register_boolean("smpi/use_shared_malloc", "yes", NULL, "Whether SMPI_SHARED_MALLOC is enabled. Disable it for debugging purposes.");
641 xbt_cfg_register_double("smpi/cpu_threshold", 1e-6, NULL, "Minimal computation time (in seconds) not discarded, or -1 for infinity.");
642 xbt_cfg_register_int("smpi/async_small_thresh", 0, NULL,
643 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver");
644 xbt_cfg_register_int("smpi/send_is_detached_thresh", 65536, NULL,
645 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend");
647 xbt_cfg_register_boolean("smpi/privatize_global_variables", "no", NULL, "Whether we should privatize global variable at runtime.");
648 xbt_cfg_register_string("smpi/os", "1:0:0:0:0", NULL, "Small messages timings (MPI_Send minimum time for small messages)");
649 xbt_cfg_register_string("smpi/ois", "1:0:0:0:0", NULL, "Small messages timings (MPI_Isend minimum time for small messages)");
650 xbt_cfg_register_string("smpi/or", "1:0:0:0:0", NULL, "Small messages timings (MPI_Recv minimum time for small messages)");
651 xbt_cfg_register_double("smpi/iprobe", 1e-4, _sg_cfg_cb__iprobe_sleep, "Minimum time to inject inside a call to MPI_Iprobe");
652 xbt_cfg_register_double("smpi/test", 1e-4, _sg_cfg_cb__test_sleep, "Minimum time to inject inside a call to MPI_Test");
653 xbt_cfg_register_double("smpi/wtime", 0.0, _sg_cfg_cb__wtime_sleep, "Minimum time to inject inside a call to MPI_Wtime");
655 xbt_cfg_register_string("smpi/coll_selector", "default", NULL, "Which collective selector to use");
656 xbt_cfg_register_string("smpi/gather", nullptr, &_check_coll_gather, "Which collective to use for gather");
657 xbt_cfg_register_string("smpi/allgather", nullptr, &_check_coll_allgather, "Which collective to use for allgather");
658 xbt_cfg_register_string("smpi/barrier", nullptr, &_check_coll_barrier, "Which collective to use for barrier");
659 xbt_cfg_register_string("smpi/reduce_scatter",nullptr, &_check_coll_reduce_scatter, "Which collective to use for reduce_scatter");
660 xbt_cfg_register_string("smpi/scatter", nullptr, &_check_coll_scatter, "Which collective to use for scatter");
661 xbt_cfg_register_string("smpi/allgatherv", nullptr, &_check_coll_allgatherv, "Which collective to use for allgatherv");
662 xbt_cfg_register_string("smpi/allreduce", nullptr, &_check_coll_allreduce, "Which collective to use for allreduce");
663 xbt_cfg_register_string("smpi/alltoall", nullptr, &_check_coll_alltoall, "Which collective to use for alltoall");
664 xbt_cfg_register_string("smpi/alltoallv", nullptr, &_check_coll_alltoallv,"Which collective to use for alltoallv");
665 xbt_cfg_register_string("smpi/bcast", nullptr, &_check_coll_bcast, "Which collective to use for bcast");
666 xbt_cfg_register_string("smpi/reduce", nullptr, &_check_coll_reduce, "Which collective to use for reduce");
669 xbt_cfg_register_boolean("exception/cutpath", "no", NULL,
670 "Whether to cut all path information from call traces, used e.g. in exceptions.");
672 xbt_cfg_register_boolean("clean_atexit", "yes", _sg_cfg_cb_clean_atexit,
673 "Whether to cleanup SimGrid at exit. Disable it if your code segfaults after its end.");
676 /* retrieves the current directory of the current process */
677 const char *initial_path = __surf_get_initial_path();
678 xbt_assert((initial_path), "__surf_get_initial_path() failed! Can't resolve current Windows directory");
680 surf_path = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
681 xbt_cfg_setdefault_string("path", initial_path);
684 _sg_cfg_init_status = 1;
686 sg_config_cmd_line(argc, argv);
688 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
690 XBT_WARN("Call to sg_config_init() after initialization ignored");
694 void sg_config_finalize(void)
696 if (!_sg_cfg_init_status)
697 return; /* Not initialized yet. Nothing to do */
699 xbt_cfg_free(&simgrid_config);
700 _sg_cfg_init_status = 0;
703 int sg_cfg_is_default_value(const char *name)
705 return xbt_cfg_is_default_value(name);
708 int sg_cfg_get_int(const char* name)
710 return xbt_cfg_get_int(name);
713 double sg_cfg_get_double(const char* name)
715 return xbt_cfg_get_double(name);
718 char* sg_cfg_get_string(const char* name)
720 return xbt_cfg_get_string(name);
723 int sg_cfg_get_boolean(const char* name)
725 return xbt_cfg_get_boolean(name);