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);
412 /* Create the configuration support */
413 if (_sg_cfg_init_status == 0) { /* Only create stuff if not already inited */
415 "The model to use for the CPU. Possible values: ");
417 while (*(++p) != '\0');
418 for (i = 0; surf_cpu_model_description[i].name; i++)
419 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
420 surf_cpu_model_description[i].name);
422 ".\n (use 'help' as a value to see the long description of each model)");
423 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description,
424 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
425 xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/model", "Cas01");
427 while (*(++p) != '\0');
428 for (i = 0; surf_optimization_mode_description[i].name; i++)
429 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
430 surf_optimization_mode_description[i].name);
432 ".\n (use 'help' as a value to see the long description of each optimization mode)");
433 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description,
434 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
435 xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/optim", "Lazy");
438 "The model to use for the storage. Possible values: ");
440 while (*(++p) != '\0');
441 for (i = 0; surf_storage_model_description[i].name; i++)
442 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
443 surf_storage_model_description[i].name);
445 ".\n (use 'help' as a value to see the long description of each model)");
446 xbt_cfg_register(&_sg_cfg_set, "storage/model", description,
447 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__storage_mode, NULL);
448 xbt_cfg_setdefault_string(_sg_cfg_set, "storage/model", "default");
451 "The model to use for the network. Possible values: ");
453 while (*(++p) != '\0');
454 for (i = 0; surf_network_model_description[i].name; i++)
455 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
456 surf_network_model_description[i].name);
458 ".\n (use 'help' as a value to see the long description of each model)");
459 xbt_cfg_register(&_sg_cfg_set, "network/model", description,
460 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__network_model, NULL);
461 xbt_cfg_setdefault_string(_sg_cfg_set, "network/model", "LV08");
464 "The optimization modes to use for the network. Possible values: ");
466 while (*(++p) != '\0');
467 for (i = 0; surf_optimization_mode_description[i].name; i++)
468 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
469 surf_optimization_mode_description[i].name);
471 ".\n (use 'help' as a value to see the long description of each optimization mode)");
472 xbt_cfg_register(&_sg_cfg_set, "network/optim", description,
473 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
474 xbt_cfg_setdefault_string(_sg_cfg_set, "network/optim", "Lazy");
477 "The model to use for the workstation. Possible values: ");
479 while (*(++p) != '\0');
480 for (i = 0; surf_workstation_model_description[i].name; i++)
481 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
482 surf_workstation_model_description[i].name);
484 ".\n (use 'help' as a value to see the long description of each model)");
485 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description,
486 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__workstation_model, NULL);
487 xbt_cfg_setdefault_string(_sg_cfg_set, "workstation/model", "default");
489 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
490 "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)",
491 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__tcp_gamma, NULL);
492 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
494 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
495 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
496 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
497 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
499 /* The parameters of network models */
501 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
502 "Minimum gap between two overlapping sends",
503 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__sender_gap, NULL);
504 /* default for "network/sender_gap" is set in network.c */
506 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
507 "Correction factor to apply to the provided latency (default value set by network model)",
508 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__latency_factor, NULL);
509 xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 1.0);
511 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
512 "Correction factor to apply to the provided bandwidth (default value set by network model)",
513 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__bandwidth_factor, NULL);
514 xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 1.0);
516 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
517 "Correction factor to apply to the weight of competing streams (default value set by network model)",
518 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__weight_S, NULL);
519 /* default for "network/weight_S" is set in network.c */
522 xbt_cfg_register(&_sg_cfg_set, "path",
523 "Lookup path for inclusions in platform and deployment XML files",
524 xbt_cfgelm_string, 0, 0, _sg_cfg_cb__surf_path, NULL);
526 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
527 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
528 xbt_cfgelm_boolean, 0, 1, NULL, NULL);
529 xbt_cfg_setdefault_boolean(_sg_cfg_set, "cpu/maxmin_selective_update", "no");
531 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
532 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
533 xbt_cfgelm_boolean, 0, 1, NULL, NULL);
534 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/maxmin_selective_update", "no");
537 /* do model-checking */
538 xbt_cfg_register(&_sg_cfg_set, "model-check",
539 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
540 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb_model_check, NULL);
541 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check", "no");
543 /* do stateful model-checking */
544 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
545 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
546 "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.",
547 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_checkpoint, NULL);
548 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
550 /* do liveness model-checking */
551 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
552 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
553 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_property, NULL);
554 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
556 /* Specify the kind of model-checking reduction */
557 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
558 "Specify the kind of exploration reduction (either none or DPOR)",
559 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_reduce, NULL);
560 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
562 /* Enable/disable timeout for wait requests with model-checking */
563 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
564 "Enable/Disable timeout for wait requests",
565 xbt_cfgelm_boolean, 0, 1, _mc_cfg_cb_timeout, NULL);
566 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", "no");
568 /* Set max depth exploration */
569 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
570 "Specify the max depth of exploration (default : 1000)",
571 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_max_depth, NULL);
572 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
574 /* Set number of visited state stored for state comparison reduction*/
575 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
576 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
577 xbt_cfgelm_int, 0, 1, _mc_cfg_cb_visited, NULL);
578 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
580 /* Set file name for dot output of graph state */
581 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
582 "Specify the name of dot file corresponding to graph state",
583 xbt_cfgelm_string, 0, 1, _mc_cfg_cb_dot_output, NULL);
584 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
587 /* do verbose-exit */
588 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
589 "Activate the \"do nothing\" mode in Ctrl-C",
590 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb_verbose_exit, NULL);
591 xbt_cfg_setdefault_boolean(_sg_cfg_set, "verbose-exit", "yes");
593 /* context factory */
595 "Context factory to use in SIMIX. Possible values: thread");
596 const char *dflt_ctx_fact = "thread";
597 #ifdef CONTEXT_UCONTEXT
598 strcat(description, ", ucontext");
599 dflt_ctx_fact = "ucontext";
602 strcat(description, ", raw");
603 dflt_ctx_fact = "raw";
605 strcat(description, ".");
606 xbt_cfg_register(&_sg_cfg_set, "contexts/factory", description,
607 xbt_cfgelm_string, 1, 1, _sg_cfg_cb_context_factory, NULL);
608 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/factory", dflt_ctx_fact);
610 /* stack size of contexts in Ko */
611 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
612 "Stack size of contexts in Kib",
613 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_stack_size, NULL);
614 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/stack_size", 128);
616 /* number of parallel threads for user processes */
617 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
618 "Number of parallel threads used to execute user contexts",
619 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_nthreads, NULL);
620 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/nthreads", 1);
622 /* minimal number of user contexts to be run in parallel */
623 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
624 "Minimal number of user contexts to be run in parallel (raw contexts only)",
625 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_parallel_threshold, NULL);
626 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/parallel_threshold", 2);
628 /* synchronization mode for parallel user contexts */
629 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
630 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
631 xbt_cfgelm_string, 1, 1, _sg_cfg_cb_contexts_parallel_mode, NULL);
633 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "futex");
634 #else //No futex on mac and posix is unimplememted yet
635 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "busy_wait");
638 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
639 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
640 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_coordinates, NULL);
641 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", "no");
643 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
644 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
645 xbt_cfgelm_boolean, 0, 1, _sg_cfg_cb__surf_network_crosstraffic, NULL);
646 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", "no");
649 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
650 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
651 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__gtnets_jitter, NULL);
652 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
654 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
655 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
656 xbt_cfgelm_int, 0, 1, _sg_cfg_cb__gtnets_jitter_seed, NULL);
657 xbt_cfg_setdefault_int(_sg_cfg_set, "gtnets/jitter_seed", 10);
660 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
661 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
662 xbt_cfgelm_string, 1, 1, NULL, NULL);
663 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
667 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
668 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
669 xbt_cfgelm_double, 1, 1, NULL, NULL);
670 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/running_power", 20000.0);
672 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
673 "Boolean indicating whether we should display the timing after simulation.",
674 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
675 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", "no");
677 xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
678 "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
679 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
680 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", "yes");
682 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
683 "Minimal computation time (in seconds) not discarded.",
684 xbt_cfgelm_double, 1, 1, NULL, NULL);
685 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/cpu_threshold", 1e-6);
687 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
688 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
689 xbt_cfgelm_int, 1, 1, NULL, NULL);
690 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/async_small_thres", 0);
692 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
693 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
694 xbt_cfgelm_int, 1, 1, NULL, NULL);
695 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/send_is_detached_thres", 65536);
697 //For smpi/bw_factor and smpi/lat_factor
698 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
699 //test is if( size >= thresholdN ) return valueN;
700 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
701 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
702 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
703 "Bandwidth factors for smpi.",
704 xbt_cfgelm_string, 1, 1, NULL, NULL);
705 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");
707 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
708 "Latency factors for smpi.",
709 xbt_cfgelm_string, 1, 1, NULL, NULL);
710 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");
712 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
713 "Small messages timings (MPI_Send minimum time for small messages)",
714 xbt_cfgelm_string, 1, 1, NULL, NULL);
715 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
717 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
718 "Small messages timings (MPI_Isend minimum time for small messages)",
719 xbt_cfgelm_string, 1, 1, NULL, NULL);
720 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
722 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
723 "Small messages timings (MPI_Recv minimum time for small messages)",
724 xbt_cfgelm_string, 1, 1, NULL, NULL);
725 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
726 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
727 "Minimum time to inject inside a call to MPI_Iprobe",
728 xbt_cfgelm_double, 1, 1, NULL, NULL);
729 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/iprobe", 1e-4);
730 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
731 "Which collective selector to use",
732 xbt_cfgelm_string, 1, 1, NULL, NULL);
733 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/coll_selector", "default");
735 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
736 "Which collective to use for gather",
737 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_gather, NULL);
739 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
740 "Which collective to use for allgather",
741 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allgather, NULL);
743 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
744 "Which collective to use for barrier",
745 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_barrier, NULL);
747 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
748 "Which collective to use for reduce_scatter",
749 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_reduce_scatter, NULL);
751 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
752 "Which collective to use for scatter",
753 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_scatter, NULL);
755 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
756 "Which collective to use for allgatherv",
757 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allgatherv, NULL);
759 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
760 "Which collective to use for allreduce",
761 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_allreduce, NULL);
763 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
764 "Which collective to use for alltoall",
765 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_alltoall, NULL);
767 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
768 "Which collective to use for alltoallv",
769 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_alltoallv, NULL);
771 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
772 "Which collective to use for bcast",
773 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_bcast, NULL);
775 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
776 "Which collective to use for reduce",
777 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__coll_reduce, NULL);
780 xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
781 "\"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.",
782 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_clean_atexit, NULL);
783 xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", "yes");
786 /* retrieves the current directory of the current process */
787 const char *initial_path = __surf_get_initial_path();
788 xbt_assert((initial_path),
789 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
791 surf_path = xbt_dynar_new(sizeof(char *), NULL);
792 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
795 _sg_cfg_init_status = 1;
797 sg_config_cmd_line(argc, argv);
799 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
802 XBT_WARN("Call to sg_config_init() after initialization ignored");
805 xbt_free(description);
808 void sg_config_finalize(void)
810 if (!_sg_cfg_init_status)
811 return; /* Not initialized yet. Nothing to do */
813 xbt_cfg_free(&_sg_cfg_set);
814 _sg_cfg_init_status = 0;
817 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
818 void surf_config_models_setup()
820 const char *workstation_model_name;
821 int workstation_id = -1;
822 char *network_model_name = NULL;
823 char *cpu_model_name = NULL;
825 char *storage_model_name = NULL;
827 workstation_model_name =
828 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
829 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
830 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
831 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
833 /* Check whether we use a net/cpu model differing from the default ones, in which case
834 * we should switch to the "compound" workstation model to correctly dispatch stuff to
835 * the right net/cpu models.
838 if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
839 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
840 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model")) {
841 XBT_INFO("Switching workstation model to compound since you changed the network and/or cpu model(s)");
842 workstation_model_name = "compound";
843 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", workstation_model_name);
846 XBT_DEBUG("Workstation model: %s", workstation_model_name);
848 find_model_description(surf_workstation_model_description,
849 workstation_model_name);
850 if (!strcmp(workstation_model_name, "compound")) {
854 xbt_assert(cpu_model_name,
855 "Set a cpu model to use with the 'compound' workstation model");
857 xbt_assert(network_model_name,
858 "Set a network model to use with the 'compound' workstation model");
861 find_model_description(surf_network_model_description,
864 find_model_description(surf_cpu_model_description, cpu_model_name);
866 surf_cpu_model_description[cpu_id].model_init_preparse();
867 surf_network_model_description[network_id].model_init_preparse();
870 XBT_DEBUG("Call workstation_model_init");
871 surf_workstation_model_description[workstation_id].model_init_preparse();
873 XBT_DEBUG("Call storage_model_init");
874 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
875 surf_storage_model_description[storage_id].model_init_preparse();
879 int sg_cfg_get_int(const char* name)
881 return xbt_cfg_get_int(_sg_cfg_set,name);
884 double sg_cfg_get_double(const char* name)
886 return xbt_cfg_get_double(_sg_cfg_set,name);
889 char* sg_cfg_get_string(const char* name)
891 return xbt_cfg_get_string(_sg_cfg_set,name);
894 int sg_cfg_get_boolean(const char* name)
896 return xbt_cfg_get_boolean(_sg_cfg_set,name);
899 void sg_cfg_get_peer(const char *name, char **peer, int *port)
901 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
904 xbt_dynar_t sg_cfg_get_dynar(const char* name)
906 return xbt_cfg_get_dynar(_sg_cfg_set,name);