1 /* Copyright (c) 2009-2010, 2012-2014. 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 "smpi/smpi_interface.h"
23 #include "instr/instr.h"
25 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf,
26 "About the configuration of simgrid");
28 xbt_cfg_t _sg_cfg_set = NULL;
30 /* 0: beginning of time (config cannot be changed yet);
31 * 1: initialized: cfg_set created (config can now be changed);
32 * 2: configured: command line parsed and config part of platform file was
33 * integrated also, platform construction ongoing or done.
34 * (Config cannot be changed anymore!)
36 int _sg_cfg_init_status = 0;
38 /* instruct the upper layer (simix or simdag) to exit as soon as possible
40 int _sg_cfg_exit_asap = 0;
42 #define sg_cfg_exit_early() do { _sg_cfg_exit_asap = 1; return; } while (0)
44 /* Parse the command line, looking for options */
45 static void sg_config_cmd_line(int *argc, char **argv)
51 for (j = i = 1; i < *argc; i++) {
52 if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
53 opt = strchr(argv[i], '=');
56 xbt_cfg_set_parse(_sg_cfg_set, opt);
57 XBT_DEBUG("Did apply '%s' as config setting", opt);
58 } else if (!strcmp(argv[i], "--version")) {
59 printf("%s\n", SIMGRID_VERSION_STRING);
61 } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
63 ("Description of the configuration accepted by this simulator:\n");
64 xbt_cfg_help(_sg_cfg_set);
67 "Each of these configurations can be used by adding\n"
68 " --cfg=<option name>:<option value>\n"
69 "to the command line.\n"
70 "You can also use --help-models to see the details of all models known by this simulator.\n"
73 "You can also use --help-tracing to see the details of all tracing options known by this simulator.\n"
76 "You can also use --help-logs and --help-log-categories to see the details of logging output.\n"
78 "You can also use --version to get SimGrid version information.\n"
82 } else if (!strcmp(argv[i], "--help-models")) {
85 model_help("workstation", surf_workstation_model_description);
87 model_help("CPU", surf_cpu_model_description);
89 model_help("network", surf_network_model_description);
90 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
91 for (k = 0; surf_optimization_mode_description[k].name; k++)
93 surf_optimization_mode_description[k].name,
94 surf_optimization_mode_description[k].description);
95 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
98 } else if (!strcmp(argv[i], "--help-tracing")) {
114 /* callback of the plugin variable */
115 static void _sg_cfg_cb__plugin(const char *name, int pos)
120 xbt_assert(_sg_cfg_init_status < 2,
121 "Cannot load a plugin after the initialization");
123 val = xbt_cfg_get_string(_sg_cfg_set, name);
125 if (!strcmp(val, "help")) {
126 model_help("plugin", surf_plugin_description);
130 /* New Module missing */
131 int plugin_id = find_model_description(surf_plugin_description, val);
132 surf_plugin_description[plugin_id].model_init_preparse();
135 /* callback of the workstation/model variable */
136 static void _sg_cfg_cb__workstation_model(const char *name, int pos)
140 xbt_assert(_sg_cfg_init_status < 2,
141 "Cannot change the model after the initialization");
143 val = xbt_cfg_get_string(_sg_cfg_set, name);
145 if (!strcmp(val, "help")) {
146 model_help("workstation", surf_workstation_model_description);
150 /* Make sure that the model exists */
151 find_model_description(surf_workstation_model_description, val);
154 /* callback of the vm_workstation/model variable */
155 static void _sg_cfg_cb__vm_workstation_model(const char *name, int pos)
159 xbt_assert(_sg_cfg_init_status < 2,
160 "Cannot change the model after the initialization");
162 val = xbt_cfg_get_string(_sg_cfg_set, name);
164 if (!strcmp(val, "help")) {
165 model_help("vm_workstation", surf_vm_workstation_model_description);
169 /* Make sure that the model exists */
170 find_model_description(surf_vm_workstation_model_description, val);
173 /* callback of the cpu/model variable */
174 static void _sg_cfg_cb__cpu_model(const char *name, int pos)
178 xbt_assert(_sg_cfg_init_status < 2,
179 "Cannot change the model after the initialization");
181 val = xbt_cfg_get_string(_sg_cfg_set, name);
183 if (!strcmp(val, "help")) {
184 model_help("CPU", surf_cpu_model_description);
188 /* New Module missing */
189 find_model_description(surf_cpu_model_description, val);
192 /* callback of the cpu/model variable */
193 static void _sg_cfg_cb__optimization_mode(const char *name, int pos)
197 xbt_assert(_sg_cfg_init_status < 2,
198 "Cannot change the model after the initialization");
200 val = xbt_cfg_get_string(_sg_cfg_set, name);
202 if (!strcmp(val, "help")) {
203 model_help("optimization", surf_optimization_mode_description);
207 /* New Module missing */
208 find_model_description(surf_optimization_mode_description, val);
211 /* callback of the cpu/model variable */
212 static void _sg_cfg_cb__storage_mode(const char *name, int pos)
216 xbt_assert(_sg_cfg_init_status < 2,
217 "Cannot change the model after the initialization");
219 val = xbt_cfg_get_string(_sg_cfg_set, name);
221 if (!strcmp(val, "help")) {
222 model_help("storage", surf_storage_model_description);
226 /* New Module missing */
227 find_model_description(surf_storage_model_description, val);
230 /* callback of the workstation_model variable */
231 static void _sg_cfg_cb__network_model(const char *name, int pos)
235 xbt_assert(_sg_cfg_init_status < 2,
236 "Cannot change the model after the initialization");
238 val = xbt_cfg_get_string(_sg_cfg_set, name);
240 if (!strcmp(val, "help")) {
241 model_help("network", surf_network_model_description);
245 /* New Module missing */
246 find_model_description(surf_network_model_description, val);
249 /* callbacks of the network models values */
250 static void _sg_cfg_cb__tcp_gamma(const char *name, int pos)
252 sg_tcp_gamma = xbt_cfg_get_double(_sg_cfg_set, name);
255 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
257 sg_maxmin_precision = xbt_cfg_get_double(_sg_cfg_set, name);
260 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
262 sg_sender_gap = xbt_cfg_get_double(_sg_cfg_set, name);
265 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
267 sg_latency_factor = xbt_cfg_get_double(_sg_cfg_set, name);
270 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
272 sg_bandwidth_factor = xbt_cfg_get_double(_sg_cfg_set, name);
275 static void _sg_cfg_cb__weight_S(const char *name, int pos)
277 sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
281 /* callback of the mpi collectives */
282 static void _sg_cfg_cb__coll(const char *category,
283 s_mpi_coll_description_t * table,
284 const char *name, int pos)
288 xbt_assert(_sg_cfg_init_status < 2,
289 "Cannot change the model after the initialization");
291 val = xbt_cfg_get_string(_sg_cfg_set, name);
293 if (!strcmp(val, "help")) {
294 coll_help(category, table);
298 /* New Module missing */
299 find_coll_description(table, val);
301 static void _sg_cfg_cb__coll_gather(const char *name, int pos){
302 _sg_cfg_cb__coll("gather", mpi_coll_gather_description, name, pos);
304 static void _sg_cfg_cb__coll_allgather(const char *name, int pos){
305 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
307 static void _sg_cfg_cb__coll_allgatherv(const char *name, int pos){
308 _sg_cfg_cb__coll("allgatherv", mpi_coll_allgatherv_description, name, pos);
310 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
312 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
314 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
316 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
318 static void _sg_cfg_cb__coll_alltoallv(const char *name, int pos)
320 _sg_cfg_cb__coll("alltoallv", mpi_coll_alltoallv_description, name, pos);
322 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
324 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
326 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
328 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
330 static void _sg_cfg_cb__coll_reduce_scatter(const char *name, int pos){
331 _sg_cfg_cb__coll("reduce_scatter", mpi_coll_reduce_scatter_description, name, pos);
333 static void _sg_cfg_cb__coll_scatter(const char *name, int pos){
334 _sg_cfg_cb__coll("scatter", mpi_coll_scatter_description, name, pos);
336 static void _sg_cfg_cb__coll_barrier(const char *name, int pos){
337 _sg_cfg_cb__coll("barrier", mpi_coll_barrier_description, name, pos);
341 /* callback of the inclusion path */
342 static void _sg_cfg_cb__surf_path(const char *name, int pos)
344 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
345 xbt_dynar_push(surf_path, &path);
348 /* callback to decide if we want to use the model-checking */
349 #include "xbt_modinter.h"
351 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
354 static void _sg_cfg_cb_model_check(const char *name, int pos)
357 _sg_do_model_check = xbt_cfg_get_boolean(_sg_cfg_set, name);
359 if (xbt_cfg_get_boolean(_sg_cfg_set, name)) {
360 xbt_die("You tried to activate the model-checking from the command line, but it was not compiled in. Change your settings in cmake, recompile and try again");
365 extern int _sg_do_verbose_exit;
367 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
369 _sg_do_verbose_exit = xbt_cfg_get_boolean(_sg_cfg_set, name);
372 extern int _sg_do_clean_atexit;
374 static void _sg_cfg_cb_clean_atexit(const char *name, int pos)
376 _sg_do_clean_atexit = xbt_cfg_get_boolean(_sg_cfg_set, name);
379 static void _sg_cfg_cb_context_factory(const char *name, int pos)
381 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
384 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
386 smx_context_stack_size_was_set = 1;
387 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
390 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
392 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
395 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
397 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
400 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
402 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
403 if (!strcmp(mode_name, "posix")) {
404 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
406 else if (!strcmp(mode_name, "futex")) {
407 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
409 else if (!strcmp(mode_name, "busy_wait")) {
410 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
413 xbt_die("Command line setting of the parallel synchronization mode should "
414 "be one of \"posix\", \"futex\" or \"busy_wait\"");
418 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
421 int val = xbt_cfg_get_boolean(_sg_cfg_set, name);
423 if (!COORD_HOST_LEVEL) {
424 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
425 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
428 if (COORD_HOST_LEVEL)
429 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
432 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
435 sg_network_crosstraffic = xbt_cfg_get_boolean(_sg_cfg_set, name);
439 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
441 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
444 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
446 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
450 /* build description line with possible values */
451 static void describe_model(char *result,
452 const s_surf_model_description_t model_description[],
454 const char *description)
457 sprintf(result, "%s. Possible values: %s", description,
458 model_description[0].name ? model_description[0].name : "n/a");
460 for (i = 1; model_description[i].name; i++)
461 p += sprintf(p, ", %s", model_description[i].name);
463 ".\n (use 'help' as a value to see the long description of each %s)",
467 /* create the config set, register what should be and parse the command line*/
468 void sg_config_init(int *argc, char **argv)
470 char description[1024];
472 /* Create the configuration support */
473 if (_sg_cfg_init_status == 0) { /* Only create stuff if not already inited */
475 /* Plugins configuration */
476 describe_model(description, surf_plugin_description,
477 "plugin", "The plugins");
478 xbt_cfg_register(&_sg_cfg_set, "plugin", description,
479 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__plugin, NULL);
481 describe_model(description, surf_cpu_model_description,
482 "model", "The model to use for the CPU");
483 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description,
484 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
485 xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/model", "Cas01");
487 describe_model(description, surf_optimization_mode_description,
489 "The optimization modes to use for the CPU");
490 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description,
491 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
492 xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/optim", "Lazy");
494 describe_model(description, surf_storage_model_description,
495 "model", "The model to use for the storage");
496 xbt_cfg_register(&_sg_cfg_set, "storage/model", description,
497 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__storage_mode, NULL);
498 xbt_cfg_setdefault_string(_sg_cfg_set, "storage/model", "default");
500 describe_model(description, surf_network_model_description,
501 "model", "The model to use for the network");
502 xbt_cfg_register(&_sg_cfg_set, "network/model", description,
503 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__network_model, NULL);
504 xbt_cfg_setdefault_string(_sg_cfg_set, "network/model", "LV08");
506 describe_model(description, surf_optimization_mode_description,
508 "The optimization modes to use for the network");
509 xbt_cfg_register(&_sg_cfg_set, "network/optim", description,
510 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
511 xbt_cfg_setdefault_string(_sg_cfg_set, "network/optim", "Lazy");
513 describe_model(description, surf_workstation_model_description,
514 "model", "The model to use for the workstation");
515 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description,
516 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__workstation_model, NULL);
517 xbt_cfg_setdefault_string(_sg_cfg_set, "workstation/model", "default");
519 describe_model(description, surf_vm_workstation_model_description,
520 "model", "The model to use for the vm workstation");
521 xbt_cfg_register(&_sg_cfg_set, "vm_workstation/model", description,
522 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__vm_workstation_model, NULL);
523 xbt_cfg_setdefault_string(_sg_cfg_set, "vm_workstation/model", "default");
525 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
526 "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)",
527 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__tcp_gamma, NULL);
528 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
530 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
531 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
532 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
533 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
535 /* The parameters of network models */
537 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
538 "Minimum gap between two overlapping sends",
539 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__sender_gap, NULL);
540 /* default for "network/sender_gap" is set in network.c */
542 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
543 "Correction factor to apply to the provided latency (default value set by network model)",
544 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__latency_factor, NULL);
545 xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 1.0);
547 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
548 "Correction factor to apply to the provided bandwidth (default value set by network model)",
549 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__bandwidth_factor, NULL);
550 xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 1.0);
552 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
553 "Correction factor to apply to the weight of competing streams (default value set by network model)",
554 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__weight_S, NULL);
555 /* default for "network/weight_S" is set in network.c */
558 xbt_cfg_register(&_sg_cfg_set, "path",
559 "Lookup path for inclusions in platform and deployment XML files",
560 xbt_cfgelm_string, 0, 0, _sg_cfg_cb__surf_path, NULL);
562 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
563 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
564 xbt_cfgelm_boolean, 0, 1, NULL, NULL);
565 xbt_cfg_setdefault_boolean(_sg_cfg_set, "cpu/maxmin_selective_update", "no");
567 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
568 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
569 xbt_cfgelm_boolean, 0, 1, NULL, NULL);
570 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/maxmin_selective_update", "no");
573 /* do model-checking */
574 xbt_cfg_register(&_sg_cfg_set, "model-check",
575 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
576 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb_model_check, NULL);
577 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check", "no");
579 /* do stateful model-checking */
580 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
581 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
582 "If value=on, one checkpoint is saved for each step => faster verification, but huge memory consumption; higher values are good compromises between speed and memory consumption.",
583 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_checkpoint, NULL);
584 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
586 /* do liveness model-checking */
587 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
588 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
589 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_property, NULL);
590 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
592 /* Specify the kind of model-checking reduction */
593 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
594 "Specify the kind of exploration reduction (either none or DPOR)",
595 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_reduce, NULL);
596 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
598 /* Enable/disable timeout for wait requests with model-checking */
599 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
600 "Enable/Disable timeout for wait requests",
601 xbt_cfgelm_boolean, 0, 1, _mc_cfg_cb_timeout, NULL);
602 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", "no");
604 /* Set max depth exploration */
605 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
606 "Specify the max depth of exploration (default : 1000)",
607 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_max_depth, NULL);
608 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
610 /* Set number of visited state stored for state comparison reduction*/
611 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
612 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
613 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_visited, NULL);
614 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
616 /* Set file name for dot output of graph state */
617 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
618 "Specify the name of dot file corresponding to graph state",
619 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_dot_output, NULL);
620 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
623 /* do verbose-exit */
624 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
625 "Activate the \"do nothing\" mode in Ctrl-C",
626 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb_verbose_exit, NULL);
627 xbt_cfg_setdefault_boolean(_sg_cfg_set, "verbose-exit", "yes");
629 /* context factory */
630 const char *dflt_ctx_fact = "thread";
632 char *p = description +
634 "Context factory to use in SIMIX. Possible values: %s",
636 #ifdef CONTEXT_UCONTEXT
637 dflt_ctx_fact = "ucontext";
638 p += sprintf(p, ", %s", dflt_ctx_fact);
641 dflt_ctx_fact = "raw";
642 p += sprintf(p, ", %s", dflt_ctx_fact);
646 xbt_cfg_register(&_sg_cfg_set, "contexts/factory", description,
647 xbt_cfgelm_string, 1, 1, _sg_cfg_cb_context_factory, NULL);
648 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/factory", dflt_ctx_fact);
650 /* stack size of contexts in Ko */
651 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
652 "Stack size of contexts in Kib",
653 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_stack_size, NULL);
654 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/stack_size", 128);
655 /* No, it was not set yet (the above setdefault() changed this to 1). */
656 smx_context_stack_size_was_set = 0;
658 /* number of parallel threads for user processes */
659 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
660 "Number of parallel threads used to execute user contexts",
661 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_nthreads, NULL);
662 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/nthreads", 1);
664 /* minimal number of user contexts to be run in parallel */
665 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
666 "Minimal number of user contexts to be run in parallel (raw contexts only)",
667 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_parallel_threshold, NULL);
668 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/parallel_threshold", 2);
670 /* synchronization mode for parallel user contexts */
671 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
672 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
673 xbt_cfgelm_string, 1, 1, _sg_cfg_cb_contexts_parallel_mode, NULL);
675 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "futex");
676 #else //No futex on mac and posix is unimplememted yet
677 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "busy_wait");
680 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
681 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
682 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_coordinates, NULL);
683 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", "no");
685 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
686 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
687 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb__surf_network_crosstraffic, NULL);
688 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", "no");
691 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
692 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
693 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__gtnets_jitter, NULL);
694 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
696 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
697 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
698 xbt_cfgelm_int, 0, 1, _sg_cfg_cb__gtnets_jitter_seed, NULL);
699 xbt_cfg_setdefault_int(_sg_cfg_set, "gtnets/jitter_seed", 10);
702 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
703 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
704 xbt_cfgelm_string, 1, 1, NULL, NULL);
705 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
709 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
710 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
711 xbt_cfgelm_double, 1, 1, NULL, NULL);
712 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/running_power", 20000.0);
714 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
715 "Boolean indicating whether we should display the timing after simulation.",
716 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
717 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", "no");
719 xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
720 "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
721 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
722 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", "yes");
724 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
725 "Minimal computation time (in seconds) not discarded, or -1 for infinity.",
726 xbt_cfgelm_double, 1, 1, NULL, NULL);
727 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/cpu_threshold", 1e-6);
729 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
730 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
731 xbt_cfgelm_int, 1, 1, NULL, NULL);
732 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/async_small_thres", 0);
734 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
735 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
736 xbt_cfgelm_int, 1, 1, NULL, NULL);
737 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/send_is_detached_thres", 65536);
739 //For smpi/bw_factor and smpi/lat_factor
740 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
741 //test is if( size >= thresholdN ) return valueN;
742 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
743 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
744 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
745 "Bandwidth factors for smpi.",
746 xbt_cfgelm_string, 1, 1, NULL, NULL);
747 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/bw_factor", "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");
749 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
750 "Latency factors for smpi.",
751 xbt_cfgelm_string, 1, 1, NULL, NULL);
752 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/lat_factor", "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");
754 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
755 "Small messages timings (MPI_Send minimum time for small messages)",
756 xbt_cfgelm_string, 1, 1, NULL, NULL);
757 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
759 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
760 "Small messages timings (MPI_Isend minimum time for small messages)",
761 xbt_cfgelm_string, 1, 1, NULL, NULL);
762 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
764 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
765 "Small messages timings (MPI_Recv minimum time for small messages)",
766 xbt_cfgelm_string, 1, 1, NULL, NULL);
767 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
768 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
769 "Minimum time to inject inside a call to MPI_Iprobe",
770 xbt_cfgelm_double, 1, 1, NULL, NULL);
771 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/iprobe", 1e-4);
772 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
773 "Which collective selector to use",
774 xbt_cfgelm_string, 1, 1, NULL, NULL);
775 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/coll_selector", "default");
777 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
778 "Which collective to use for gather",
779 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_gather, NULL);
781 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
782 "Which collective to use for allgather",
783 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allgather, NULL);
785 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
786 "Which collective to use for barrier",
787 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_barrier, NULL);
789 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
790 "Which collective to use for reduce_scatter",
791 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_reduce_scatter, NULL);
793 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
794 "Which collective to use for scatter",
795 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_scatter, NULL);
797 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
798 "Which collective to use for allgatherv",
799 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allgatherv, NULL);
801 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
802 "Which collective to use for allreduce",
803 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allreduce, NULL);
805 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
806 "Which collective to use for alltoall",
807 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_alltoall, NULL);
809 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
810 "Which collective to use for alltoallv",
811 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_alltoallv, NULL);
813 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
814 "Which collective to use for bcast",
815 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_bcast, NULL);
817 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
818 "Which collective to use for reduce",
819 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_reduce, NULL);
822 xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
823 "\"yes\" or \"no\". \"yes\" enables all the cleanups of SimGrid (XBT,SIMIX,MSG) to be registered with atexit. \"no\" may be useful if your code segfaults when calling the exit function.",
824 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_clean_atexit, NULL);
825 xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", "yes");
828 /* retrieves the current directory of the current process */
829 const char *initial_path = __surf_get_initial_path();
830 xbt_assert((initial_path),
831 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
833 surf_path = xbt_dynar_new(sizeof(char *), NULL);
834 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
837 _sg_cfg_init_status = 1;
839 sg_config_cmd_line(argc, argv);
841 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
844 XBT_WARN("Call to sg_config_init() after initialization ignored");
848 void sg_config_finalize(void)
850 if (!_sg_cfg_init_status)
851 return; /* Not initialized yet. Nothing to do */
853 xbt_cfg_free(&_sg_cfg_set);
854 _sg_cfg_init_status = 0;
857 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
858 void surf_config_models_setup()
860 const char *workstation_model_name;
861 const char *vm_workstation_model_name;
862 int workstation_id = -1;
863 int vm_workstation_id = -1;
864 char *network_model_name = NULL;
865 char *cpu_model_name = NULL;
867 char *storage_model_name = NULL;
869 workstation_model_name =
870 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
871 vm_workstation_model_name =
872 xbt_cfg_get_string(_sg_cfg_set, "vm_workstation/model");
873 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
874 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
875 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
877 /* Check whether we use a net/cpu model differing from the default ones, in which case
878 * we should switch to the "compound" workstation model to correctly dispatch stuff to
879 * the right net/cpu models.
882 if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
883 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
884 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model")) {
885 XBT_INFO("Switching workstation model to compound since you changed the network and/or cpu model(s)");
886 workstation_model_name = "compound";
887 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", workstation_model_name);
890 XBT_DEBUG("Workstation model: %s", workstation_model_name);
892 find_model_description(surf_workstation_model_description,
893 workstation_model_name);
894 if (!strcmp(workstation_model_name, "compound")) {
898 xbt_assert(cpu_model_name,
899 "Set a cpu model to use with the 'compound' workstation model");
901 xbt_assert(network_model_name,
902 "Set a network model to use with the 'compound' workstation model");
905 find_model_description(surf_network_model_description,
908 find_model_description(surf_cpu_model_description, cpu_model_name);
910 surf_cpu_model_description[cpu_id].model_init_preparse();
911 surf_network_model_description[network_id].model_init_preparse();
914 XBT_DEBUG("Call workstation_model_init");
915 surf_workstation_model_description[workstation_id].model_init_preparse();
917 XBT_DEBUG("Call vm_workstation_model_init");
918 vm_workstation_id = find_model_description(surf_vm_workstation_model_description,
919 vm_workstation_model_name);
920 surf_vm_workstation_model_description[vm_workstation_id].model_init_preparse();
922 XBT_DEBUG("Call storage_model_init");
923 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
924 surf_storage_model_description[storage_id].model_init_preparse();
928 int sg_cfg_is_default_value(const char *name)
930 return xbt_cfg_is_default_value(_sg_cfg_set, name);
933 int sg_cfg_get_int(const char* name)
935 return xbt_cfg_get_int(_sg_cfg_set, name);
938 double sg_cfg_get_double(const char* name)
940 return xbt_cfg_get_double(_sg_cfg_set, name);
943 char* sg_cfg_get_string(const char* name)
945 return xbt_cfg_get_string(_sg_cfg_set, name);
948 int sg_cfg_get_boolean(const char* name)
950 return xbt_cfg_get_boolean(_sg_cfg_set, name);
953 void sg_cfg_get_peer(const char *name, char **peer, int *port)
955 xbt_cfg_get_peer(_sg_cfg_set, name, peer, port);
958 xbt_dynar_t sg_cfg_get_dynar(const char* name)
960 return xbt_cfg_get_dynar(_sg_cfg_set, name);