1 /* Copyright (c) 2009, 2010. 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 int _sg_init_status = 0; /* 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 integrated also, platform construction ongoing or done.
33 (Config cannot be changed anymore!) */
35 /* Parse the command line, looking for options */
36 static void sg_config_cmd_line(int *argc, char **argv)
42 for (j = i = 1; i < *argc; i++) {
43 if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
44 opt = strchr(argv[i], '=');
47 xbt_cfg_set_parse(_sg_cfg_set, opt);
48 XBT_DEBUG("Did apply '%s' as config setting", opt);
49 } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
51 ("Description of the configuration accepted by this simulator:\n");
52 xbt_cfg_help(_sg_cfg_set);
55 "Each of these configurations can be used by adding\n"
56 " --cfg=<option name>:<option value>\n"
57 "to the command line.\n"
58 "You can also use --help-models to see the details of all models known by this simulator.\n"
61 "You can also use --help-tracing to see the details of all tracing options known by this simulator.\n"
64 "You can also use --help-logs and --help-log-categories to see the details of logging output.\n"
68 } else if (!strcmp(argv[i], "--help-models")) {
71 model_help("workstation", surf_workstation_model_description);
73 model_help("CPU", surf_cpu_model_description);
75 model_help("network", surf_network_model_description);
76 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
77 for (k = 0; surf_optimization_mode_description[k].name; k++)
79 surf_optimization_mode_description[k].name,
80 surf_optimization_mode_description[k].description);
81 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
84 } else if (!strcmp(argv[i], "--help-tracing")) {
97 _sg_init_status=1; // get everything cleanly cleaned on exit
102 /* callback of the workstation/model variable */
103 static void _sg_cfg_cb__workstation_model(const char *name, int pos)
107 xbt_assert(_sg_init_status == 1,
108 "Cannot change the model after the initialization");
110 val = xbt_cfg_get_string(_sg_cfg_set, name);
112 if (!strcmp(val, "help")) {
113 model_help("workstation", surf_workstation_model_description);
117 /* Make sure that the model exists */
118 find_model_description(surf_workstation_model_description, val);
121 /* callback of the cpu/model variable */
122 static void _sg_cfg_cb__cpu_model(const char *name, int pos)
126 xbt_assert(_sg_init_status == 1,
127 "Cannot change the model after the initialization");
129 val = xbt_cfg_get_string(_sg_cfg_set, name);
131 if (!strcmp(val, "help")) {
132 model_help("CPU", surf_cpu_model_description);
136 /* New Module missing */
137 find_model_description(surf_cpu_model_description, val);
140 /* callback of the cpu/model variable */
141 static void _sg_cfg_cb__optimization_mode(const char *name, int pos)
145 xbt_assert(_sg_init_status == 1,
146 "Cannot change the model after the initialization");
148 val = xbt_cfg_get_string(_sg_cfg_set, name);
150 if (!strcmp(val, "help")) {
151 model_help("optimization", surf_optimization_mode_description);
155 /* New Module missing */
156 find_model_description(surf_optimization_mode_description, val);
159 /* callback of the cpu/model variable */
160 static void _sg_cfg_cb__storage_mode(const char *name, int pos)
164 xbt_assert(_sg_init_status == 1,
165 "Cannot change the model after the initialization");
167 val = xbt_cfg_get_string(_sg_cfg_set, name);
169 if (!strcmp(val, "help")) {
170 model_help("storage", surf_storage_model_description);
174 /* New Module missing */
175 find_model_description(surf_storage_model_description, val);
178 /* callback of the workstation_model variable */
179 static void _sg_cfg_cb__network_model(const char *name, int pos)
183 xbt_assert(_sg_init_status == 1,
184 "Cannot change the model after the initialization");
186 val = xbt_cfg_get_string(_sg_cfg_set, name);
188 if (!strcmp(val, "help")) {
189 model_help("network", surf_network_model_description);
193 /* New Module missing */
194 find_model_description(surf_network_model_description, val);
197 /* callbacks of the network models values */
198 static void _sg_cfg_cb__tcp_gamma(const char *name, int pos)
200 sg_tcp_gamma = xbt_cfg_get_double(_sg_cfg_set, name);
203 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
205 sg_maxmin_precision = xbt_cfg_get_double(_sg_cfg_set, name);
208 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
210 sg_sender_gap = xbt_cfg_get_double(_sg_cfg_set, name);
213 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
215 sg_latency_factor = xbt_cfg_get_double(_sg_cfg_set, name);
218 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
220 sg_bandwidth_factor = xbt_cfg_get_double(_sg_cfg_set, name);
223 static void _sg_cfg_cb__weight_S(const char *name, int pos)
225 sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
229 /* callback of the mpi collectives */
230 static void _sg_cfg_cb__coll(const char *category,
231 s_mpi_coll_description_t * table,
232 const char *name, int pos)
236 xbt_assert(_sg_init_status == 1,
237 "Cannot change the model after the initialization");
239 val = xbt_cfg_get_string(_sg_cfg_set, name);
241 if (!strcmp(val, "help")) {
242 coll_help(category, table);
246 /* New Module missing */
247 find_coll_description(table, val);
249 static void _sg_cfg_cb__coll_gather(const char *name, int pos){
250 _sg_cfg_cb__coll("gather", mpi_coll_gather_description, name, pos);
252 static void _sg_cfg_cb__coll_allgather(const char *name, int pos){
253 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
255 static void _sg_cfg_cb__coll_allgatherv(const char *name, int pos){
256 _sg_cfg_cb__coll("allgatherv", mpi_coll_allgatherv_description, name, pos);
258 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
260 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
262 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
264 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
266 static void _sg_cfg_cb__coll_alltoallv(const char *name, int pos)
268 _sg_cfg_cb__coll("alltoallv", mpi_coll_alltoallv_description, name, pos);
270 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
272 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
274 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
276 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
278 static void _sg_cfg_cb__coll_reduce_scatter(const char *name, int pos){
279 _sg_cfg_cb__coll("reduce_scatter", mpi_coll_reduce_scatter_description, name, pos);
281 static void _sg_cfg_cb__coll_scatter(const char *name, int pos){
282 _sg_cfg_cb__coll("scatter", mpi_coll_scatter_description, name, pos);
284 static void _sg_cfg_cb__coll_barrier(const char *name, int pos){
285 _sg_cfg_cb__coll("barrier", mpi_coll_barrier_description, name, pos);
289 /* callback of the inclusion path */
290 static void _sg_cfg_cb__surf_path(const char *name, int pos)
292 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
293 xbt_dynar_push(surf_path, &path);
296 /* callback to decide if we want to use the model-checking */
297 #include "xbt_modinter.h"
299 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
302 static void _sg_cfg_cb_model_check(const char *name, int pos)
305 _sg_do_model_check = xbt_cfg_get_boolean(_sg_cfg_set, name);
307 if (xbt_cfg_get_boolean(_sg_cfg_set, name)) {
308 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");
313 extern int _sg_do_verbose_exit;
315 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
317 _sg_do_verbose_exit = xbt_cfg_get_boolean(_sg_cfg_set, name);
320 extern int _sg_do_clean_atexit;
322 static void _sg_cfg_cb_clean_atexit(const char *name, int pos)
324 _sg_do_clean_atexit = xbt_cfg_get_boolean(_sg_cfg_set, name);
327 static void _sg_cfg_cb_context_factory(const char *name, int pos)
329 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
332 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
334 smx_context_stack_size_was_set = 1;
335 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
338 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
340 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
343 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
345 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
348 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
350 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
351 if (!strcmp(mode_name, "posix")) {
352 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
354 else if (!strcmp(mode_name, "futex")) {
355 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
357 else if (!strcmp(mode_name, "busy_wait")) {
358 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
361 xbt_die("Command line setting of the parallel synchronization mode should "
362 "be one of \"posix\", \"futex\" or \"busy_wait\"");
366 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
369 int val = xbt_cfg_get_boolean(_sg_cfg_set, name);
371 if (!COORD_HOST_LEVEL) {
372 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
373 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
376 if (COORD_HOST_LEVEL)
377 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
380 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
383 sg_network_crosstraffic = xbt_cfg_get_boolean(_sg_cfg_set, name);
387 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
389 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
392 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
394 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
398 /* create the config set, register what should be and parse the command line*/
399 void sg_config_init(int *argc, char **argv)
401 char *description = xbt_malloc(1024), *p = description;
403 double double_default_value;
404 int default_value_int;
407 /* Create the configuration support */
408 if (_sg_init_status == 0) { /* Only create stuff if not already inited */
410 "The model to use for the CPU. Possible values: ");
412 while (*(++p) != '\0');
413 for (i = 0; surf_cpu_model_description[i].name; i++)
414 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
415 surf_cpu_model_description[i].name);
417 ".\n (use 'help' as a value to see the long description of each model)");
418 default_value = xbt_strdup("Cas01");
419 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string,
420 &default_value, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
423 "The optimization modes to use for the CPU. Possible values: ");
425 while (*(++p) != '\0');
426 for (i = 0; surf_optimization_mode_description[i].name; i++)
427 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
428 surf_optimization_mode_description[i].name);
430 ".\n (use 'help' as a value to see the long description of each optimization mode)");
431 default_value = xbt_strdup("Lazy");
432 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description, xbt_cfgelm_string,
433 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
436 "The model to use for the storage. Possible values: ");
438 while (*(++p) != '\0');
439 for (i = 0; surf_storage_model_description[i].name; i++)
440 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
441 surf_storage_model_description[i].name);
443 ".\n (use 'help' as a value to see the long description of each model)");
444 default_value = xbt_strdup("default");
445 xbt_cfg_register(&_sg_cfg_set, "storage/model", description, xbt_cfgelm_string,
446 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
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 default_value = xbt_strdup("default");
461 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description, xbt_cfgelm_string,
462 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
464 /* ********************************************************************* */
467 "The model to use for the network. Possible values: ");
469 while (*(++p) != '\0');
470 for (i = 0; surf_network_model_description[i].name; i++)
471 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
472 surf_network_model_description[i].name);
474 ".\n (use 'help' as a value to see the long description of each model)");
475 default_value = xbt_strdup("LV08");
476 xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string,
477 &default_value, 1, 1, &_sg_cfg_cb__network_model,
481 "The optimization modes to use for the network. Possible values: ");
483 while (*(++p) != '\0');
484 for (i = 0; surf_optimization_mode_description[i].name; i++)
485 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
486 surf_optimization_mode_description[i].name);
488 ".\n (use 'help' as a value to see the long description of each optimization mode)");
489 default_value = xbt_strdup("Lazy");
490 xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string,
491 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
494 "The model to use for the workstation. Possible values: ");
496 while (*(++p) != '\0');
497 for (i = 0; surf_workstation_model_description[i].name; i++)
498 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
499 surf_workstation_model_description[i].name);
501 ".\n (use 'help' as a value to see the long description of each model)");
502 default_value = xbt_strdup("default");
503 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description, xbt_cfgelm_string,
504 &default_value, 1, 1,
505 &_sg_cfg_cb__workstation_model, NULL);
507 xbt_free(description);
509 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
510 "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)",
511 xbt_cfgelm_double, NULL, 1, 1,
512 _sg_cfg_cb__tcp_gamma, NULL);
513 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
515 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
516 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
517 xbt_cfgelm_double, NULL, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
518 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
520 /* The parameters of network models */
522 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
523 "Minimum gap between two overlapping sends",
524 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
525 _sg_cfg_cb__sender_gap, NULL);
527 double_default_value = 1.0; // FIXME use setdefault everywhere here!
528 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
529 "Correction factor to apply to the provided latency (default value set by network model)",
530 xbt_cfgelm_double, &double_default_value, 1, 1,
531 _sg_cfg_cb__latency_factor, NULL);
532 double_default_value = 1.0;
533 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
534 "Correction factor to apply to the provided bandwidth (default value set by network model)",
535 xbt_cfgelm_double, &double_default_value, 1, 1,
536 _sg_cfg_cb__bandwidth_factor, NULL);
538 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
539 "Correction factor to apply to the weight of competing streams (default value set by network model)",
540 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
541 _sg_cfg_cb__weight_S, NULL);
544 xbt_cfg_register(&_sg_cfg_set, "path",
545 "Lookup path for inclusions in platform and deployment XML files",
546 xbt_cfgelm_string, NULL, 0, 0,
547 _sg_cfg_cb__surf_path, NULL);
549 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
550 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
551 xbt_cfgelm_boolean, NULL, 0, 1,
553 xbt_cfg_setdefault_boolean(_sg_cfg_set, "cpu/maxmin_selective_update", "no");
555 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
556 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
557 xbt_cfgelm_boolean, NULL, 0, 1,
559 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/maxmin_selective_update", "no");
562 /* do model-checking */
563 xbt_cfg_register(&_sg_cfg_set, "model-check",
564 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
565 xbt_cfgelm_boolean, NULL, 0, 1,
566 _sg_cfg_cb_model_check, NULL);
567 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check", "no");
569 /* do stateful model-checking */
570 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
571 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
572 "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.",
573 xbt_cfgelm_int, NULL, 0, 1,
574 _mc_cfg_cb_checkpoint, NULL);
575 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
577 /* do liveness model-checking */
578 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
579 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
580 xbt_cfgelm_string, NULL, 0, 1,
581 _mc_cfg_cb_property, NULL);
582 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
584 /* Specify the kind of model-checking reduction */
585 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
586 "Specify the kind of exploration reduction (either none or DPOR)",
587 xbt_cfgelm_string, NULL, 0, 1,
588 _mc_cfg_cb_reduce, NULL);
589 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
591 /* Enable/disable timeout for wait requests with model-checking */
592 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
593 "Enable/Disable timeout for wait requests",
594 xbt_cfgelm_boolean, NULL, 0, 1,
595 _mc_cfg_cb_timeout, NULL);
596 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", "no");
598 /* Set max depth exploration */
599 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
600 "Specify the max depth of exploration (default : 1000)",
601 xbt_cfgelm_int, NULL, 0, 1,
602 _mc_cfg_cb_max_depth, NULL);
603 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
605 /* Set number of visited state stored for state comparison reduction*/
606 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
607 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
608 xbt_cfgelm_int, NULL, 0, 1,
609 _mc_cfg_cb_visited, NULL);
610 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
612 /* Set file name for dot output of graph state */
613 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
614 "Specify the name of dot file corresponding to graph state",
615 xbt_cfgelm_string, NULL, 0, 1,
616 _mc_cfg_cb_dot_output, NULL);
617 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
620 /* do verbose-exit */
621 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
622 "Activate the \"do nothing\" mode in Ctrl-C",
623 xbt_cfgelm_boolean, NULL, 0, 1,
624 _sg_cfg_cb_verbose_exit, NULL);
625 xbt_cfg_setdefault_boolean(_sg_cfg_set, "verbose-exit", "yes");
627 /* context factory */
628 default_value = xbt_strdup("ucontext");
629 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
630 "Context factory to use in SIMIX (ucontext, thread or raw)",
631 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
633 /* stack size of contexts in Ko */
634 default_value_int = 128;
635 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
636 "Stack size of contexts in Kib (ucontext or raw only)",
637 xbt_cfgelm_int, &default_value_int, 1, 1,
638 _sg_cfg_cb_context_stack_size, NULL);
640 /* number of parallel threads for user processes */
641 default_value_int = 1;
642 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
643 "Number of parallel threads used to execute user contexts",
644 xbt_cfgelm_int, &default_value_int, 1, 1,
645 _sg_cfg_cb_contexts_nthreads, NULL);
647 /* minimal number of user contexts to be run in parallel */
648 default_value_int = 2;
649 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
650 "Minimal number of user contexts to be run in parallel (raw contexts only)",
651 xbt_cfgelm_int, &default_value_int, 1, 1,
652 _sg_cfg_cb_contexts_parallel_threshold, NULL);
654 /* synchronization mode for parallel user contexts */
656 default_value = xbt_strdup("futex");
657 #else //No futex on mac and posix is unimplememted yet
658 default_value = xbt_strdup("busy_wait");
660 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
661 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
662 xbt_cfgelm_string, &default_value, 1, 1,
663 _sg_cfg_cb_contexts_parallel_mode, NULL);
665 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
666 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
667 xbt_cfgelm_boolean, NULL, 1, 1,
668 _sg_cfg_cb__surf_network_coordinates, NULL);
669 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", "no");
671 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
672 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
673 xbt_cfgelm_boolean, NULL, 0, 1,
674 _sg_cfg_cb__surf_network_crosstraffic, NULL);
675 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", "no");
678 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
679 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
680 xbt_cfgelm_double, NULL, 1, 1,
681 _sg_cfg_cb__gtnets_jitter, NULL);
682 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
684 default_value_int = 10;
685 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
686 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
687 xbt_cfgelm_int, &default_value_int, 0, 1,
688 _sg_cfg_cb__gtnets_jitter_seed, NULL);
691 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
692 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
693 xbt_cfgelm_string, NULL, 1, 1,
695 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
699 double default_reference_speed = 20000.0;
700 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
701 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
702 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
705 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
706 "Boolean indicating whether we should display the timing after simulation.",
707 xbt_cfgelm_boolean, NULL, 1, 1, NULL,
709 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", "no");
711 xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
712 "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
713 xbt_cfgelm_boolean, NULL, 1, 1, NULL,
715 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", "yes");
717 double default_threshold = 1e-6;
718 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
719 "Minimal computation time (in seconds) not discarded.",
720 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
723 int default_small_messages_threshold = 0;
724 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
725 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
726 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
729 int default_send_is_detached_threshold = 65536;
730 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
731 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
732 xbt_cfgelm_int, &default_send_is_detached_threshold, 1, 1, NULL,
735 //For smpi/bw_factor and smpi/lat_factor
736 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
737 //test is if( size >= thresholdN ) return valueN;
738 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
739 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
740 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
741 "Bandwidth factors for smpi.",
742 xbt_cfgelm_string, NULL, 1, 1, NULL,
744 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");
746 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
747 "Latency factors for smpi.",
748 xbt_cfgelm_string, NULL, 1, 1, NULL,
750 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");
752 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
753 "Small messages timings (MPI_Send minimum time for small messages)",
754 xbt_cfgelm_string, NULL, 1, 1, NULL,
756 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
758 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
759 "Small messages timings (MPI_Isend minimum time for small messages)",
760 xbt_cfgelm_string, NULL, 1, 1, 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, NULL, 1, 1, NULL,
768 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
769 double default_iprobe_time = 1e-4;
770 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
771 "Minimum time to inject inside a call to MPI_Iprobe",
772 xbt_cfgelm_double, &default_iprobe_time, 1, 1, NULL,
774 default_value = xbt_strdup("default");
775 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
776 "Which collective selector to use",
777 xbt_cfgelm_string, &default_value, 1, 1, NULL,
780 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
781 "Which collective to use for gather",
782 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_gather,
785 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
786 "Which collective to use for allgather",
787 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allgather,
790 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
791 "Which collective to use for barrier",
792 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_barrier,
795 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
796 "Which collective to use for reduce_scatter",
797 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_reduce_scatter,
800 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
801 "Which collective to use for scatter",
802 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_scatter,
805 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
806 "Which collective to use for allgatherv",
807 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allgatherv,
810 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
811 "Which collective to use for allreduce",
812 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allreduce,
815 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
816 "Which collective to use for alltoall",
817 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_alltoall,
820 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
821 "Which collective to use for alltoallv",
822 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_alltoallv,
825 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
826 "Which collective to use for bcast",
827 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_bcast,
830 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
831 "Which collective to use for reduce",
832 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_reduce,
836 xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
837 "\"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.",
838 xbt_cfgelm_boolean, NULL, 1, 1,
839 _sg_cfg_cb_clean_atexit, NULL);
840 xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", "yes");
843 /* retrieves the current directory of the current process */
844 const char *initial_path = __surf_get_initial_path();
845 xbt_assert((initial_path),
846 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
848 surf_path = xbt_dynar_new(sizeof(char *), NULL);
849 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
854 sg_config_cmd_line(argc, argv);
856 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
859 XBT_WARN("Call to sg_config_init() after initialization ignored");
863 void sg_config_finalize(void)
865 if (!_sg_init_status)
866 return; /* Not initialized yet. Nothing to do */
868 xbt_cfg_free(&_sg_cfg_set);
872 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
873 void surf_config_models_setup()
875 char *workstation_model_name;
876 int workstation_id = -1;
877 char *network_model_name = NULL;
878 char *cpu_model_name = NULL;
880 char *storage_model_name = NULL;
882 workstation_model_name =
883 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
884 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
885 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
886 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
888 /* Check whether we use a net/cpu model differing from the default ones, in which case
889 * we should switch to the "compound" workstation model to correctly dispatch stuff to
890 * the right net/cpu models.
893 if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
894 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
895 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model")) {
896 const char *val = "compound";
897 XBT_INFO("Switching workstation model to compound since you changed the network and/or cpu model(s)");
898 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
899 workstation_model_name = (char *) "compound";
902 XBT_DEBUG("Workstation model: %s", workstation_model_name);
904 find_model_description(surf_workstation_model_description,
905 workstation_model_name);
906 if (!strcmp(workstation_model_name, "compound")) {
910 xbt_assert(cpu_model_name,
911 "Set a cpu model to use with the 'compound' workstation model");
913 xbt_assert(network_model_name,
914 "Set a network model to use with the 'compound' workstation model");
917 find_model_description(surf_network_model_description,
920 find_model_description(surf_cpu_model_description, cpu_model_name);
922 surf_cpu_model_description[cpu_id].model_init_preparse();
923 surf_network_model_description[network_id].model_init_preparse();
926 XBT_DEBUG("Call workstation_model_init");
927 surf_workstation_model_description[workstation_id].model_init_preparse();
929 XBT_DEBUG("Call storage_model_init");
930 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
931 surf_storage_model_description[storage_id].model_init_preparse();
933 /* ********************************************************************* */
934 /* TUTORIAL: New model */
935 int new_model_id = -1;
936 char *new_model_name = NULL;
937 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
938 XBT_DEBUG("Call new model_init");
939 new_model_id = find_model_description(surf_new_model_description, new_model_name);
940 surf_new_model_description[new_model_id].model_init_preparse();
941 /* ********************************************************************* */
944 int sg_cfg_get_int(const char* name)
946 return xbt_cfg_get_int(_sg_cfg_set,name);
949 double sg_cfg_get_double(const char* name)
951 return xbt_cfg_get_double(_sg_cfg_set,name);
954 char* sg_cfg_get_string(const char* name)
956 return xbt_cfg_get_string(_sg_cfg_set,name);
959 int sg_cfg_get_boolean(const char* name)
961 return xbt_cfg_get_boolean(_sg_cfg_set,name);
964 void sg_cfg_get_peer(const char *name, char **peer, int *port)
966 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
969 xbt_dynar_t sg_cfg_get_dynar(const char* name)
971 return xbt_cfg_get_dynar(_sg_cfg_set,name);