1 /* Copyright (c) 2009-2010, 2012-2013. 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], "--cfg-help") || !strcmp(argv[i], "--help")) {
60 ("Description of the configuration accepted by this simulator:\n");
61 xbt_cfg_help(_sg_cfg_set);
64 "Each of these configurations can be used by adding\n"
65 " --cfg=<option name>:<option value>\n"
66 "to the command line.\n"
67 "You can also use --help-models to see the details of all models known by this simulator.\n"
70 "You can also use --help-tracing to see the details of all tracing options known by this simulator.\n"
73 "You can also use --help-logs and --help-log-categories to see the details of logging output.\n"
77 } else if (!strcmp(argv[i], "--help-models")) {
80 model_help("workstation", surf_workstation_model_description);
82 model_help("CPU", surf_cpu_model_description);
84 model_help("network", surf_network_model_description);
85 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
86 for (k = 0; surf_optimization_mode_description[k].name; k++)
88 surf_optimization_mode_description[k].name,
89 surf_optimization_mode_description[k].description);
90 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
93 } else if (!strcmp(argv[i], "--help-tracing")) {
109 /* callback of the workstation/model variable */
110 static void _sg_cfg_cb__workstation_model(const char *name, int pos)
114 xbt_assert(_sg_cfg_init_status < 2,
115 "Cannot change the model after the initialization");
117 val = xbt_cfg_get_string(_sg_cfg_set, name);
119 if (!strcmp(val, "help")) {
120 model_help("workstation", surf_workstation_model_description);
124 /* Make sure that the model exists */
125 find_model_description(surf_workstation_model_description, val);
128 /* callback of the cpu/model variable */
129 static void _sg_cfg_cb__cpu_model(const char *name, int pos)
133 xbt_assert(_sg_cfg_init_status < 2,
134 "Cannot change the model after the initialization");
136 val = xbt_cfg_get_string(_sg_cfg_set, name);
138 if (!strcmp(val, "help")) {
139 model_help("CPU", surf_cpu_model_description);
143 /* New Module missing */
144 find_model_description(surf_cpu_model_description, val);
147 /* callback of the cpu/model variable */
148 static void _sg_cfg_cb__optimization_mode(const char *name, int pos)
152 xbt_assert(_sg_cfg_init_status < 2,
153 "Cannot change the model after the initialization");
155 val = xbt_cfg_get_string(_sg_cfg_set, name);
157 if (!strcmp(val, "help")) {
158 model_help("optimization", surf_optimization_mode_description);
162 /* New Module missing */
163 find_model_description(surf_optimization_mode_description, val);
166 /* callback of the cpu/model variable */
167 static void _sg_cfg_cb__storage_mode(const char *name, int pos)
171 xbt_assert(_sg_cfg_init_status < 2,
172 "Cannot change the model after the initialization");
174 val = xbt_cfg_get_string(_sg_cfg_set, name);
176 if (!strcmp(val, "help")) {
177 model_help("storage", surf_storage_model_description);
181 /* New Module missing */
182 find_model_description(surf_storage_model_description, val);
185 /* callback of the workstation_model variable */
186 static void _sg_cfg_cb__network_model(const char *name, int pos)
190 xbt_assert(_sg_cfg_init_status < 2,
191 "Cannot change the model after the initialization");
193 val = xbt_cfg_get_string(_sg_cfg_set, name);
195 if (!strcmp(val, "help")) {
196 model_help("network", surf_network_model_description);
200 /* New Module missing */
201 find_model_description(surf_network_model_description, val);
204 /* callbacks of the network models values */
205 static void _sg_cfg_cb__tcp_gamma(const char *name, int pos)
207 sg_tcp_gamma = xbt_cfg_get_double(_sg_cfg_set, name);
210 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
212 sg_maxmin_precision = xbt_cfg_get_double(_sg_cfg_set, name);
215 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
217 sg_sender_gap = xbt_cfg_get_double(_sg_cfg_set, name);
220 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
222 sg_latency_factor = xbt_cfg_get_double(_sg_cfg_set, name);
225 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
227 sg_bandwidth_factor = xbt_cfg_get_double(_sg_cfg_set, name);
230 static void _sg_cfg_cb__weight_S(const char *name, int pos)
232 sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
236 /* callback of the mpi collectives */
237 static void _sg_cfg_cb__coll(const char *category,
238 s_mpi_coll_description_t * table,
239 const char *name, int pos)
243 xbt_assert(_sg_cfg_init_status < 2,
244 "Cannot change the model after the initialization");
246 val = xbt_cfg_get_string(_sg_cfg_set, name);
248 if (!strcmp(val, "help")) {
249 coll_help(category, table);
253 /* New Module missing */
254 find_coll_description(table, val);
256 static void _sg_cfg_cb__coll_gather(const char *name, int pos){
257 _sg_cfg_cb__coll("gather", mpi_coll_gather_description, name, pos);
259 static void _sg_cfg_cb__coll_allgather(const char *name, int pos){
260 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
262 static void _sg_cfg_cb__coll_allgatherv(const char *name, int pos){
263 _sg_cfg_cb__coll("allgatherv", mpi_coll_allgatherv_description, name, pos);
265 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
267 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
269 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
271 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
273 static void _sg_cfg_cb__coll_alltoallv(const char *name, int pos)
275 _sg_cfg_cb__coll("alltoallv", mpi_coll_alltoallv_description, name, pos);
277 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
279 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
281 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
283 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
285 static void _sg_cfg_cb__coll_reduce_scatter(const char *name, int pos){
286 _sg_cfg_cb__coll("reduce_scatter", mpi_coll_reduce_scatter_description, name, pos);
288 static void _sg_cfg_cb__coll_scatter(const char *name, int pos){
289 _sg_cfg_cb__coll("scatter", mpi_coll_scatter_description, name, pos);
291 static void _sg_cfg_cb__coll_barrier(const char *name, int pos){
292 _sg_cfg_cb__coll("barrier", mpi_coll_barrier_description, name, pos);
296 /* callback of the inclusion path */
297 static void _sg_cfg_cb__surf_path(const char *name, int pos)
299 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
300 xbt_dynar_push(surf_path, &path);
303 /* callback to decide if we want to use the model-checking */
304 #include "xbt_modinter.h"
306 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
309 static void _sg_cfg_cb_model_check(const char *name, int pos)
312 _sg_do_model_check = xbt_cfg_get_boolean(_sg_cfg_set, name);
314 if (xbt_cfg_get_boolean(_sg_cfg_set, name)) {
315 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");
320 extern int _sg_do_verbose_exit;
322 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
324 _sg_do_verbose_exit = xbt_cfg_get_boolean(_sg_cfg_set, name);
327 extern int _sg_do_clean_atexit;
329 static void _sg_cfg_cb_clean_atexit(const char *name, int pos)
331 _sg_do_clean_atexit = xbt_cfg_get_boolean(_sg_cfg_set, name);
334 static void _sg_cfg_cb_context_factory(const char *name, int pos)
336 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
339 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
341 smx_context_stack_size_was_set = 1;
342 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
345 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
347 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
350 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
352 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
355 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
357 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
358 if (!strcmp(mode_name, "posix")) {
359 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
361 else if (!strcmp(mode_name, "futex")) {
362 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
364 else if (!strcmp(mode_name, "busy_wait")) {
365 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
368 xbt_die("Command line setting of the parallel synchronization mode should "
369 "be one of \"posix\", \"futex\" or \"busy_wait\"");
373 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
376 int val = xbt_cfg_get_boolean(_sg_cfg_set, name);
378 if (!COORD_HOST_LEVEL) {
379 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
380 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
383 if (COORD_HOST_LEVEL)
384 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
387 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
390 sg_network_crosstraffic = xbt_cfg_get_boolean(_sg_cfg_set, name);
394 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
396 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
399 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
401 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
405 /* create the config set, register what should be and parse the command line*/
406 void sg_config_init(int *argc, char **argv)
408 char *description = xbt_malloc(1024), *p = description;
411 /* Create the configuration support */
412 if (_sg_cfg_init_status == 0) { /* Only create stuff if not already inited */
414 "The model to use for the CPU. Possible values: ");
416 while (*(++p) != '\0');
417 for (i = 0; surf_cpu_model_description[i].name; i++)
418 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
419 surf_cpu_model_description[i].name);
421 ".\n (use 'help' as a value to see the long description of each model)");
422 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description,
423 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
424 xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/model", "Cas01");
426 while (*(++p) != '\0');
427 for (i = 0; surf_optimization_mode_description[i].name; i++)
428 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
429 surf_optimization_mode_description[i].name);
431 ".\n (use 'help' as a value to see the long description of each optimization mode)");
432 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description,
433 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
434 xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/optim", "Lazy");
437 "The model to use for the storage. Possible values: ");
439 while (*(++p) != '\0');
440 for (i = 0; surf_storage_model_description[i].name; i++)
441 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
442 surf_storage_model_description[i].name);
444 ".\n (use 'help' as a value to see the long description of each model)");
445 xbt_cfg_register(&_sg_cfg_set, "storage/model", description,
446 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__storage_mode, NULL);
447 xbt_cfg_setdefault_string(_sg_cfg_set, "storage/model", "default");
449 /* ********************************************************************* */
450 /* TUTORIAL: New model */
452 "The model to use for the New model. Possible values: ");
454 while (*(++p) != '\0');
455 for (i = 0; surf_new_model_description[i].name; i++)
456 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
457 surf_new_model_description[i].name);
459 ".\n (use 'help' as a value to see the long description of each model)");
460 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description,
461 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__storage_mode, NULL);
462 xbt_cfg_setdefault_string(_sg_cfg_set, "new_model/model", "default");
463 /* ********************************************************************* */
466 "The model to use for the network. Possible values: ");
468 while (*(++p) != '\0');
469 for (i = 0; surf_network_model_description[i].name; i++)
470 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
471 surf_network_model_description[i].name);
473 ".\n (use 'help' as a value to see the long description of each model)");
474 xbt_cfg_register(&_sg_cfg_set, "network/model", description,
475 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__network_model, NULL);
476 xbt_cfg_setdefault_string(_sg_cfg_set, "network/model", "LV08");
479 "The optimization modes to use for the network. Possible values: ");
481 while (*(++p) != '\0');
482 for (i = 0; surf_optimization_mode_description[i].name; i++)
483 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
484 surf_optimization_mode_description[i].name);
486 ".\n (use 'help' as a value to see the long description of each optimization mode)");
487 xbt_cfg_register(&_sg_cfg_set, "network/optim", description,
488 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
489 xbt_cfg_setdefault_string(_sg_cfg_set, "network/optim", "Lazy");
492 "The model to use for the workstation. Possible values: ");
494 while (*(++p) != '\0');
495 for (i = 0; surf_workstation_model_description[i].name; i++)
496 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
497 surf_workstation_model_description[i].name);
499 ".\n (use 'help' as a value to see the long description of each model)");
500 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description,
501 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__workstation_model, NULL);
502 xbt_cfg_setdefault_string(_sg_cfg_set, "workstation/model", "default");
504 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
505 "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)",
506 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__tcp_gamma, NULL);
507 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
509 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
510 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
511 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
512 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
514 /* The parameters of network models */
516 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
517 "Minimum gap between two overlapping sends",
518 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__sender_gap, NULL);
519 /* default for "network/sender_gap" is set in network.c */
521 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
522 "Correction factor to apply to the provided latency (default value set by network model)",
523 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__latency_factor, NULL);
524 xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 1.0);
526 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
527 "Correction factor to apply to the provided bandwidth (default value set by network model)",
528 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__bandwidth_factor, NULL);
529 xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 1.0);
531 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
532 "Correction factor to apply to the weight of competing streams (default value set by network model)",
533 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__weight_S, NULL);
534 /* default for "network/weight_S" is set in network.c */
537 xbt_cfg_register(&_sg_cfg_set, "path",
538 "Lookup path for inclusions in platform and deployment XML files",
539 xbt_cfgelm_string, 0, 0, _sg_cfg_cb__surf_path, NULL);
541 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
542 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
543 xbt_cfgelm_boolean, 0, 1, NULL, NULL);
544 xbt_cfg_setdefault_boolean(_sg_cfg_set, "cpu/maxmin_selective_update", "no");
546 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
547 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
548 xbt_cfgelm_boolean, 0, 1, NULL, NULL);
549 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/maxmin_selective_update", "no");
552 /* do model-checking */
553 xbt_cfg_register(&_sg_cfg_set, "model-check",
554 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
555 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb_model_check, NULL);
556 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check", "no");
558 /* do stateful model-checking */
559 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
560 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
561 "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.",
562 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_checkpoint, NULL);
563 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
565 /* do liveness model-checking */
566 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
567 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
568 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_property, NULL);
569 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
571 /* Specify the kind of model-checking reduction */
572 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
573 "Specify the kind of exploration reduction (either none or DPOR)",
574 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_reduce, NULL);
575 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
577 /* Enable/disable timeout for wait requests with model-checking */
578 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
579 "Enable/Disable timeout for wait requests",
580 xbt_cfgelm_boolean, 0, 1, _mc_cfg_cb_timeout, NULL);
581 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", "no");
583 /* Set max depth exploration */
584 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
585 "Specify the max depth of exploration (default : 1000)",
586 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_max_depth, NULL);
587 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
589 /* Set number of visited state stored for state comparison reduction*/
590 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
591 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
592 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_visited, NULL);
593 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
595 /* Set file name for dot output of graph state */
596 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
597 "Specify the name of dot file corresponding to graph state",
598 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_dot_output, NULL);
599 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
602 /* do verbose-exit */
603 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
604 "Activate the \"do nothing\" mode in Ctrl-C",
605 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb_verbose_exit, NULL);
606 xbt_cfg_setdefault_boolean(_sg_cfg_set, "verbose-exit", "yes");
608 /* context factory */
610 "Context factory to use in SIMIX. Possible values: thread");
611 const char *dflt_ctx_fact = "thread";
612 #ifdef CONTEXT_UCONTEXT
613 strcat(description, ", ucontext");
614 dflt_ctx_fact = "ucontext";
617 strcat(description, ", raw");
618 dflt_ctx_fact = "raw";
620 strcat(description, ".");
621 xbt_cfg_register(&_sg_cfg_set, "contexts/factory", description,
622 xbt_cfgelm_string, 1, 1, _sg_cfg_cb_context_factory, NULL);
623 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/factory", dflt_ctx_fact);
625 /* stack size of contexts in Ko */
626 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
627 "Stack size of contexts in Kib",
628 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_stack_size, NULL);
629 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/stack_size", 128);
631 /* number of parallel threads for user processes */
632 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
633 "Number of parallel threads used to execute user contexts",
634 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_nthreads, NULL);
635 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/nthreads", 1);
637 /* minimal number of user contexts to be run in parallel */
638 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
639 "Minimal number of user contexts to be run in parallel (raw contexts only)",
640 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_parallel_threshold, NULL);
641 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/parallel_threshold", 2);
643 /* synchronization mode for parallel user contexts */
644 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
645 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
646 xbt_cfgelm_string, 1, 1, _sg_cfg_cb_contexts_parallel_mode, NULL);
648 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "futex");
649 #else //No futex on mac and posix is unimplememted yet
650 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "busy_wait");
653 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
654 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
655 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_coordinates, NULL);
656 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", "no");
658 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
659 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
660 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb__surf_network_crosstraffic, NULL);
661 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", "no");
664 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
665 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
666 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__gtnets_jitter, NULL);
667 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
669 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
670 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
671 xbt_cfgelm_int, 0, 1, _sg_cfg_cb__gtnets_jitter_seed, NULL);
672 xbt_cfg_setdefault_int(_sg_cfg_set, "gtnets/jitter_seed", 10);
675 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
676 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
677 xbt_cfgelm_string, 1, 1, NULL, NULL);
678 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
682 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
683 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
684 xbt_cfgelm_double, 1, 1, NULL, NULL);
685 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/running_power", 20000.0);
687 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
688 "Boolean indicating whether we should display the timing after simulation.",
689 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
690 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", "no");
692 xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
693 "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
694 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
695 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", "yes");
697 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
698 "Minimal computation time (in seconds) not discarded.",
699 xbt_cfgelm_double, 1, 1, NULL, NULL);
700 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/cpu_threshold", 1e-6);
702 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
703 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
704 xbt_cfgelm_int, 1, 1, NULL, NULL);
705 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/async_small_thres", 0);
707 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
708 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
709 xbt_cfgelm_int, 1, 1, NULL, NULL);
710 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/send_is_detached_thres", 65536);
712 //For smpi/bw_factor and smpi/lat_factor
713 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
714 //test is if( size >= thresholdN ) return valueN;
715 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
716 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
717 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
718 "Bandwidth factors for smpi.",
719 xbt_cfgelm_string, 1, 1, NULL, NULL);
720 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");
722 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
723 "Latency factors for smpi.",
724 xbt_cfgelm_string, 1, 1, NULL, NULL);
725 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");
727 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
728 "Small messages timings (MPI_Send minimum time for small messages)",
729 xbt_cfgelm_string, 1, 1, NULL, NULL);
730 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
732 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
733 "Small messages timings (MPI_Isend minimum time for small messages)",
734 xbt_cfgelm_string, 1, 1, NULL, NULL);
735 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
737 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
738 "Small messages timings (MPI_Recv minimum time for small messages)",
739 xbt_cfgelm_string, 1, 1, NULL, NULL);
740 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
741 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
742 "Minimum time to inject inside a call to MPI_Iprobe",
743 xbt_cfgelm_double, 1, 1, NULL, NULL);
744 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/iprobe", 1e-4);
745 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
746 "Which collective selector to use",
747 xbt_cfgelm_string, 1, 1, NULL, NULL);
748 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/coll_selector", "default");
750 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
751 "Which collective to use for gather",
752 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_gather, NULL);
754 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
755 "Which collective to use for allgather",
756 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allgather, NULL);
758 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
759 "Which collective to use for barrier",
760 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_barrier, NULL);
762 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
763 "Which collective to use for reduce_scatter",
764 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_reduce_scatter, NULL);
766 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
767 "Which collective to use for scatter",
768 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_scatter, NULL);
770 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
771 "Which collective to use for allgatherv",
772 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allgatherv, NULL);
774 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
775 "Which collective to use for allreduce",
776 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allreduce, NULL);
778 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
779 "Which collective to use for alltoall",
780 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_alltoall, NULL);
782 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
783 "Which collective to use for alltoallv",
784 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_alltoallv, NULL);
786 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
787 "Which collective to use for bcast",
788 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_bcast, NULL);
790 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
791 "Which collective to use for reduce",
792 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_reduce, NULL);
795 xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
796 "\"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.",
797 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_clean_atexit, NULL);
798 xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", "yes");
801 /* retrieves the current directory of the current process */
802 const char *initial_path = __surf_get_initial_path();
803 xbt_assert((initial_path),
804 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
806 surf_path = xbt_dynar_new(sizeof(char *), NULL);
807 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
810 _sg_cfg_init_status = 1;
812 sg_config_cmd_line(argc, argv);
814 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
817 XBT_WARN("Call to sg_config_init() after initialization ignored");
820 xbt_free(description);
823 void sg_config_finalize(void)
825 if (!_sg_cfg_init_status)
826 return; /* Not initialized yet. Nothing to do */
828 xbt_cfg_free(&_sg_cfg_set);
829 _sg_cfg_init_status = 0;
832 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
833 void surf_config_models_setup()
835 const char *workstation_model_name;
836 int workstation_id = -1;
837 char *network_model_name = NULL;
838 char *cpu_model_name = NULL;
840 char *storage_model_name = NULL;
842 workstation_model_name =
843 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
844 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
845 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
846 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
848 /* Check whether we use a net/cpu model differing from the default ones, in which case
849 * we should switch to the "compound" workstation model to correctly dispatch stuff to
850 * the right net/cpu models.
853 if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
854 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
855 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model")) {
856 XBT_INFO("Switching workstation model to compound since you changed the network and/or cpu model(s)");
857 workstation_model_name = "compound";
858 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", workstation_model_name);
861 XBT_DEBUG("Workstation model: %s", workstation_model_name);
863 find_model_description(surf_workstation_model_description,
864 workstation_model_name);
865 if (!strcmp(workstation_model_name, "compound")) {
869 xbt_assert(cpu_model_name,
870 "Set a cpu model to use with the 'compound' workstation model");
872 xbt_assert(network_model_name,
873 "Set a network model to use with the 'compound' workstation model");
876 find_model_description(surf_network_model_description,
879 find_model_description(surf_cpu_model_description, cpu_model_name);
881 surf_cpu_model_description[cpu_id].model_init_preparse();
882 surf_network_model_description[network_id].model_init_preparse();
885 XBT_DEBUG("Call workstation_model_init");
886 surf_workstation_model_description[workstation_id].model_init_preparse();
888 XBT_DEBUG("Call storage_model_init");
889 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
890 surf_storage_model_description[storage_id].model_init_preparse();
892 /* ********************************************************************* */
893 /* TUTORIAL: New model */
894 int new_model_id = -1;
895 char *new_model_name = NULL;
896 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
897 XBT_DEBUG("Call new model_init");
898 new_model_id = find_model_description(surf_new_model_description, new_model_name);
899 surf_new_model_description[new_model_id].model_init_preparse();
900 /* ********************************************************************* */
903 int sg_cfg_get_int(const char* name)
905 return xbt_cfg_get_int(_sg_cfg_set,name);
908 double sg_cfg_get_double(const char* name)
910 return xbt_cfg_get_double(_sg_cfg_set,name);
913 char* sg_cfg_get_string(const char* name)
915 return xbt_cfg_get_string(_sg_cfg_set,name);
918 int sg_cfg_get_boolean(const char* name)
920 return xbt_cfg_get_boolean(_sg_cfg_set,name);
923 void sg_cfg_get_peer(const char *name, char **peer, int *port)
925 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
928 xbt_dynar_t sg_cfg_get_dynar(const char* name)
930 return xbt_cfg_get_dynar(_sg_cfg_set,name);