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, int pos)
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, int pos)
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, int pos)
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, int pos)
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, int pos)
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, int pos)
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, int pos)
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, int pos)
239 sg_tcp_gamma = xbt_cfg_get_double(name);
242 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
244 sg_maxmin_precision = xbt_cfg_get_double(name);
247 static void _sg_cfg_cb__surf_precision(const char* name, int pos)
249 sg_surf_precision = xbt_cfg_get_double(name);
252 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
254 sg_sender_gap = xbt_cfg_get_double(name);
257 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
259 sg_latency_factor = xbt_cfg_get_double(name);
262 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
264 sg_bandwidth_factor = xbt_cfg_get_double(name);
267 static void _sg_cfg_cb__weight_S(const char *name, int pos)
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, int pos){
290 _check_coll("gather", mpi_coll_gather_description, name);
292 static void _check_coll_allgather(const char *name, int pos){
293 _check_coll("allgather", mpi_coll_allgather_description, name);
295 static void _check_coll_allgatherv(const char *name, int pos){
296 _check_coll("allgatherv", mpi_coll_allgatherv_description, name);
298 static void _check_coll_allreduce(const char *name, int pos)
300 _check_coll("allreduce", mpi_coll_allreduce_description, name);
302 static void _check_coll_alltoall(const char *name, int pos)
304 _check_coll("alltoall", mpi_coll_alltoall_description, name);
306 static void _check_coll_alltoallv(const char *name, int pos)
308 _check_coll("alltoallv", mpi_coll_alltoallv_description, name);
310 static void _check_coll_bcast(const char *name, int pos)
312 _check_coll("bcast", mpi_coll_bcast_description, name);
314 static void _check_coll_reduce(const char *name, int pos)
316 _check_coll("reduce", mpi_coll_reduce_description, name);
318 static void _check_coll_reduce_scatter(const char *name, int pos){
319 _check_coll("reduce_scatter", mpi_coll_reduce_scatter_description, name);
321 static void _check_coll_scatter(const char *name, int pos){
322 _check_coll("scatter", mpi_coll_scatter_description, name);
324 static void _check_coll_barrier(const char *name, int pos){
325 _check_coll("barrier", mpi_coll_barrier_description, name);
328 static void _sg_cfg_cb__wtime_sleep(const char *name, int pos){
329 smpi_wtime_sleep = xbt_cfg_get_double(name);
332 static void _sg_cfg_cb__iprobe_sleep(const char *name, int pos){
333 smpi_iprobe_sleep = xbt_cfg_get_double(name);
336 static void _sg_cfg_cb__test_sleep(const char *name, int pos){
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, int pos)
347 char *path = xbt_strdup(xbt_cfg_get_string_at(simgrid_config, name, pos));
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, int pos) {
361 MC_record_path = xbt_cfg_get_string(name);
365 static void _sg_cfg_cb_model_check_record(const char *name, int pos) {
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, int pos)
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, int pos)
381 _sg_do_clean_atexit = xbt_cfg_get_boolean(name);
384 static void _sg_cfg_cb_context_factory(const char *name, int pos)
386 smx_context_factory_name = xbt_cfg_get_string(name);
389 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
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, int pos)
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, int pos)
403 SIMIX_context_set_nthreads(xbt_cfg_get_int(name));
406 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
408 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(name));
411 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
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,
432 static int already_set = 0;
433 int val = xbt_cfg_get_boolean(name);
436 COORD_HOST_LEVEL = sg_host_extension_create(xbt_dynar_free_voidp);
437 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
442 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
445 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
448 sg_network_crosstraffic = xbt_cfg_get_boolean(name);
451 /* build description line with possible values */
452 static void describe_model(char *result,
453 const s_surf_model_description_t model_description[],
455 const char *description)
458 sprintf(result, "%s. Possible values: %s", description,
459 model_description[0].name ? model_description[0].name : "n/a");
461 for (i = 1; model_description[i].name; i++)
462 p += sprintf(p, ", %s", model_description[i].name);
464 ".\n (use 'help' as a value to see the long description of each %s)",
468 /* create the config set, register what should be and parse the command line*/
469 void sg_config_init(int *argc, char **argv)
471 char description[1024];
473 /* Create the configuration support */
474 if (_sg_cfg_init_status == 0) { /* Only create stuff if not already inited */
476 /* Plugins configuration */
477 describe_model(description, surf_plugin_description, "plugin", "The plugins");
478 xbt_cfg_register_string("plugin", description, nullptr, &_sg_cfg_cb__plugin);
480 describe_model(description, surf_cpu_model_description, "model", "The model to use for the CPU");
481 xbt_cfg_register_string("cpu/model", description, "Cas01", &_sg_cfg_cb__cpu_model);
483 describe_model(description, surf_optimization_mode_description, "optimization mode", "The optimization modes to use for the CPU");
484 xbt_cfg_register_string("cpu/optim", description, "Lazy", &_sg_cfg_cb__optimization_mode);
486 describe_model(description, surf_storage_model_description, "model", "The model to use for the storage");
487 xbt_cfg_register_string("storage/model", description, "default", &_sg_cfg_cb__storage_mode);
489 describe_model(description, surf_network_model_description, "model", "The model to use for the network");
490 xbt_cfg_register_string("network/model", description, "LV08", &_sg_cfg_cb__network_model);
492 describe_model(description, surf_optimization_mode_description, "optimization mode", "The optimization modes to use for the network");
493 xbt_cfg_register_string("network/optim", description, "Lazy", &_sg_cfg_cb__optimization_mode);
495 describe_model(description, surf_host_model_description, "model", "The model to use for the host");
496 xbt_cfg_register_string("host/model", description, "default", &_sg_cfg_cb__host_model);
498 describe_model(description, surf_vm_model_description, "model", "The model to use for the vm");
499 xbt_cfg_register_string("vm/model", description, "default", &_sg_cfg_cb__vm_model);
501 xbt_cfg_register_double("network/TCP_gamma",
502 "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)",
503 4194304.0, _sg_cfg_cb__tcp_gamma);
505 xbt_cfg_register_double("surf/precision", "Numerical precision used when updating simulation times (in seconds)",
506 0.00001, _sg_cfg_cb__surf_precision);
508 xbt_cfg_register_double("maxmin/precision",
509 "Numerical precision used when computing resource sharing (in ops/sec or bytes/sec)",
510 0.00001, _sg_cfg_cb__maxmin_precision);
512 /* The parameters of network models */
514 xbt_cfg_register_double("network/sender_gap", "Minimum gap between two overlapping sends", NAN, _sg_cfg_cb__sender_gap); /* real default for "network/sender_gap" is set in network_smpi.cpp */
515 xbt_cfg_register_double("network/latency_factor", "Correction factor to apply to the provided latency (default value set by network model)",
516 1.0, _sg_cfg_cb__latency_factor);
517 xbt_cfg_register_double("network/bandwidth_factor", "Correction factor to apply to the provided bandwidth (default value set by network model)",
518 1.0, _sg_cfg_cb__bandwidth_factor);
519 xbt_cfg_register_double("network/weight_S",
520 "Correction factor to apply to the weight of competing streams (default value set by network model)",
521 NAN, _sg_cfg_cb__weight_S); /* real default for "network/weight_S" is set in network_*.cpp */
524 xbt_cfg_register_string("path", "Lookup path for inclusions in platform and deployment XML files", "", _sg_cfg_cb__surf_path);
526 xbt_cfg_register_boolean("cpu/maxmin_selective_update",
527 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
529 xbt_cfg_register_boolean("network/maxmin_selective_update",
530 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
532 /* Replay (this part is enabled even if MC it disabled) */
533 xbt_cfg_register_string("model-check/replay", "Enable replay mode with the given path", nullptr, _sg_cfg_cb_model_check_replay);
536 /* do model-checking-record */
537 xbt_cfg_register_boolean("model-check/record", "Record the model-checking paths", "no", _sg_cfg_cb_model_check_record);
539 xbt_cfg_register_int("model-check/checkpoint",
540 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
541 "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.",
542 0, _mc_cfg_cb_checkpoint);
544 xbt_cfg_register_boolean("model-check/sparse_checkpoint", "Use sparse per-page snapshots.", "no", _mc_cfg_cb_sparse_checkpoint);
545 xbt_cfg_register_boolean("model-check/soft-dirty", "Use sparse per-page snapshots.", "no", _mc_cfg_cb_soft_dirty);
546 xbt_cfg_register_boolean("model-check/ksm", "Kernel same-page merging", "no", _mc_cfg_cb_ksm);
548 xbt_cfg_register_string("model-check/property", "Name of the file containing the property, as formated by the ltl2ba program.",
549 "", _mc_cfg_cb_property);
551 xbt_cfg_register_boolean("model-check/communications_determinism",
552 "Whether to enable the detection of communication determinism", "no", _mc_cfg_cb_comms_determinism);
554 xbt_cfg_register_boolean("model-check/send_determinism",
555 "Enable/disable the detection of send-determinism in the communications schemes", "no", _mc_cfg_cb_send_determinism);
557 /* Specify the kind of model-checking reduction */
558 xbt_cfg_register_string("model-check/reduction", "Specify the kind of exploration reduction (either none or DPOR)", "dpor", _mc_cfg_cb_reduce);
559 xbt_cfg_register_boolean("model-check/timeout", "Whether to enable timeouts for wait requests", "no", _mc_cfg_cb_timeout);
561 xbt_cfg_register_boolean("model-check/hash", "Whether to enable state hash for state comparison (experimental)", "no", _mc_cfg_cb_hash);
562 xbt_cfg_register_boolean("model-check/snapshot_fds", "Whether file descriptors must be snapshoted (currently unusable)", "no", _mc_cfg_cb_snapshot_fds);
563 xbt_cfg_register_int("model-check/max_depth", "Maximal exploration depth (default: 1000)", 1000, _mc_cfg_cb_max_depth);
564 xbt_cfg_register_int("model-check/visited",
565 "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.",
566 0, _mc_cfg_cb_visited);
568 xbt_cfg_register_string("model-check/dot_output", "Name of dot output file corresponding to graph state", "", _mc_cfg_cb_dot_output);
569 xbt_cfg_register_boolean("model-check/termination", "Whether to enable non progressive cycle detection", "no", _mc_cfg_cb_termination);
572 xbt_cfg_register_boolean("verbose-exit", "Activate the \"do nothing\" mode in Ctrl-C", "yes", _sg_cfg_cb_verbose_exit);
574 /* context factory */
575 const char *dflt_ctx_fact = "thread";
577 char *p = description +
579 "Context factory to use in SIMIX. Possible values: %s",
581 #if HAVE_UCONTEXT_CONTEXTS
582 dflt_ctx_fact = "ucontext";
583 p += sprintf(p, ", %s", dflt_ctx_fact);
585 #if HAVE_RAW_CONTEXTS
586 dflt_ctx_fact = "raw";
587 p += sprintf(p, ", %s", dflt_ctx_fact);
591 xbt_cfg_register_string("contexts/factory", description, dflt_ctx_fact, _sg_cfg_cb_context_factory);
593 xbt_cfg_register_int("contexts/stack_size", "Stack size of contexts in KiB", 8*1024, _sg_cfg_cb_context_stack_size);
594 /* (FIXME: this is unpleasant) Reset this static variable that was altered when setting the default value. */
595 smx_context_stack_size_was_set = 0;
597 /* guard size for contexts stacks in memory pages */
598 xbt_cfg_register_int("contexts/guard_size", "Guard size for contexts stacks in memory pages",
599 #if defined(_WIN32) || (PTH_STACKGROWTH != -1)
600 0, _sg_cfg_cb_context_guard_size);
602 1, _sg_cfg_cb_context_guard_size);
604 /* No, it was not set yet (the above setdefault() changed this to 1). */
605 smx_context_guard_size_was_set = 0;
607 xbt_cfg_register_int("contexts/nthreads", "Number of parallel threads used to execute user contexts", 1, _sg_cfg_cb_contexts_nthreads);
609 xbt_cfg_register_int("contexts/parallel_threshold", "Minimal number of user contexts to be run in parallel (raw contexts only)",
610 2, _sg_cfg_cb_contexts_parallel_threshold);
612 /* synchronization mode for parallel user contexts */
613 xbt_cfg_register_string("contexts/synchro", "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
615 "futex", _sg_cfg_cb_contexts_parallel_mode);
616 #else //No futex on mac and posix is unimplememted yet
617 "busy_wait", _sg_cfg_cb_contexts_parallel_mode);
620 xbt_cfg_register_boolean("network/coordinates", "Whether we use a coordinate-based routing (as Vivaldi)",
621 "no", _sg_cfg_cb__surf_network_coordinates);
623 xbt_cfg_register_boolean("network/crosstraffic", "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
624 "yes", _sg_cfg_cb__surf_network_crosstraffic);
627 xbt_cfg_register_string("ns3/TcpModel", "The ns3 tcp model can be : NewReno or Reno or Tahoe", "default", NULL);
630 //For smpi/bw_factor and smpi/lat_factor
631 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
632 //test is if( size >= thresholdN ) return valueN;
633 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
634 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
635 // SMPI model can be used without enable_smpi, so keep this out of the ifdef.
636 xbt_cfg_register_string("smpi/bw_factor", "Bandwidth factors for smpi.",
637 "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);
639 xbt_cfg_register_string("smpi/lat_factor", "Latency factors for smpi.",
640 "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);
642 xbt_cfg_register_string("smpi/IB_penalty_factors",
643 "Correction factor to communications using Infiniband model with contention (default value based on Stampede cluster profiling)",
644 "0.965;0.925;1.35", NULL);
647 xbt_cfg_register_double("smpi/running_power", "Power of the host running the simulation (in flop/s). Used to bench the operations.", 20000.0, NULL);
648 xbt_cfg_register_boolean("smpi/display_timing", "Whether we should display the timing after simulation.", "no", NULL);
649 xbt_cfg_register_boolean("smpi/simulate_computation", "Whether the computational part of the simulated application should be simulated.", "yes", NULL);
650 xbt_cfg_register_boolean("smpi/use_shared_malloc", "Whether SMPI_SHARED_MALLOC is enabled. Disable it for debugging purposes.", "yes", NULL);
651 xbt_cfg_register_double("smpi/cpu_threshold", "Minimal computation time (in seconds) not discarded, or -1 for infinity.", 1e-6, NULL);
652 xbt_cfg_register_int("smpi/async_small_thresh", "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
654 xbt_cfg_register_int("smpi/send_is_detached_thresh", "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
657 xbt_cfg_register_boolean("smpi/privatize_global_variables", "Whether we should privatize global variable at runtime.", "no", NULL);
658 xbt_cfg_register_string("smpi/os", "Small messages timings (MPI_Send minimum time for small messages)", "1:0:0:0:0", NULL);
659 xbt_cfg_register_string("smpi/ois", "Small messages timings (MPI_Isend minimum time for small messages)", "1:0:0:0:0", NULL);
660 xbt_cfg_register_string("smpi/or", "Small messages timings (MPI_Recv minimum time for small messages)", "1:0:0:0:0", NULL);
661 xbt_cfg_register_double("smpi/iprobe", "Minimum time to inject inside a call to MPI_Iprobe", 1e-4, _sg_cfg_cb__iprobe_sleep);
662 xbt_cfg_register_double("smpi/test", "Minimum time to inject inside a call to MPI_Test", 1e-4, _sg_cfg_cb__test_sleep);
663 xbt_cfg_register_double("smpi/wtime", "Minimum time to inject inside a call to MPI_Wtime", 0.0, _sg_cfg_cb__wtime_sleep);
665 xbt_cfg_register_string("smpi/coll_selector", "Which collective selector to use", "default", NULL);
666 xbt_cfg_register_string("smpi/gather", "Which collective to use for gather", nullptr, &_check_coll_gather);
667 xbt_cfg_register_string("smpi/allgather", "Which collective to use for allgather", nullptr, &_check_coll_allgather);
668 xbt_cfg_register_string("smpi/barrier", "Which collective to use for barrier", nullptr, &_check_coll_barrier);
669 xbt_cfg_register_string("smpi/reduce_scatter", "Which collective to use for reduce_scatter", nullptr, &_check_coll_reduce_scatter);
670 xbt_cfg_register_string("smpi/scatter", "Which collective to use for scatter", nullptr, &_check_coll_scatter);
671 xbt_cfg_register_string("smpi/allgatherv", "Which collective to use for allgatherv", nullptr, &_check_coll_allgatherv);
672 xbt_cfg_register_string("smpi/allreduce", "Which collective to use for allreduce", nullptr, &_check_coll_allreduce);
673 xbt_cfg_register_string("smpi/alltoall", "Which collective to use for alltoall", nullptr, &_check_coll_alltoall);
674 xbt_cfg_register_string("smpi/alltoallv", "Which collective to use for alltoallv", nullptr, &_check_coll_alltoallv);
675 xbt_cfg_register_string("smpi/bcast", "Which collective to use for bcast", nullptr, &_check_coll_bcast);
676 xbt_cfg_register_string("smpi/reduce", "Which collective to use for reduce", nullptr, &_check_coll_reduce);
679 xbt_cfg_register_boolean("exception/cutpath", "Whether to cut all path information from call traces, used e.g. in exceptions.", "no", NULL);
681 xbt_cfg_register_boolean("clean_atexit", "Whether to cleanup SimGrid at exit. Disable it if your code segfaults at ending.",
682 "yes", _sg_cfg_cb_clean_atexit);
685 /* retrieves the current directory of the current process */
686 const char *initial_path = __surf_get_initial_path();
687 xbt_assert((initial_path), "__surf_get_initial_path() failed! Can't resolve current Windows directory");
689 surf_path = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
690 xbt_cfg_setdefault_string("path", initial_path);
693 _sg_cfg_init_status = 1;
695 sg_config_cmd_line(argc, argv);
697 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
699 XBT_WARN("Call to sg_config_init() after initialization ignored");
703 void sg_config_finalize(void)
705 if (!_sg_cfg_init_status)
706 return; /* Not initialized yet. Nothing to do */
708 xbt_cfg_free(&simgrid_config);
709 _sg_cfg_init_status = 0;
712 int sg_cfg_is_default_value(const char *name)
714 return xbt_cfg_is_default_value(name);
717 int sg_cfg_get_int(const char* name)
719 return xbt_cfg_get_int(name);
722 double sg_cfg_get_double(const char* name)
724 return xbt_cfg_get_double(name);
727 char* sg_cfg_get_string(const char* name)
729 return xbt_cfg_get_string(name);
732 int sg_cfg_get_boolean(const char* name)
734 return xbt_cfg_get_boolean(name);
737 xbt_dynar_t sg_cfg_get_dynar(const char* name)
739 return xbt_cfg_get_dynar(name);