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);
198 /* callbacks of the network models values */
199 static void _sg_cfg_cb__tcp_gamma(const char *name, int pos)
201 sg_tcp_gamma = xbt_cfg_get_double(_sg_cfg_set, name);
204 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
206 sg_maxmin_precision = xbt_cfg_get_double(_sg_cfg_set, name);
209 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
211 sg_sender_gap = xbt_cfg_get_double(_sg_cfg_set, name);
214 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
216 sg_latency_factor = xbt_cfg_get_double(_sg_cfg_set, name);
219 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
221 sg_bandwidth_factor = xbt_cfg_get_double(_sg_cfg_set, name);
224 static void _sg_cfg_cb__weight_S(const char *name, int pos)
226 sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
230 /* callback of the mpi collectives */
231 static void _sg_cfg_cb__coll(const char *category,
232 s_mpi_coll_description_t * table,
233 const char *name, int pos)
237 xbt_assert(_sg_init_status == 1,
238 "Cannot change the model after the initialization");
240 val = xbt_cfg_get_string(_sg_cfg_set, name);
242 if (!strcmp(val, "help")) {
243 coll_help(category, table);
247 /* New Module missing */
248 find_coll_description(table, val);
250 static void _sg_cfg_cb__coll_gather(const char *name, int pos){
251 _sg_cfg_cb__coll("gather", mpi_coll_gather_description, name, pos);
253 static void _sg_cfg_cb__coll_allgather(const char *name, int pos){
254 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
256 static void _sg_cfg_cb__coll_allgatherv(const char *name, int pos){
257 _sg_cfg_cb__coll("allgatherv", mpi_coll_allgatherv_description, name, pos);
259 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
261 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
263 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
265 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
267 static void _sg_cfg_cb__coll_alltoallv(const char *name, int pos)
269 _sg_cfg_cb__coll("alltoallv", mpi_coll_alltoallv_description, name, pos);
271 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
273 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
275 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
277 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
279 static void _sg_cfg_cb__coll_reduce_scatter(const char *name, int pos){
280 _sg_cfg_cb__coll("reduce_scatter", mpi_coll_reduce_scatter_description, name, pos);
282 static void _sg_cfg_cb__coll_scatter(const char *name, int pos){
283 _sg_cfg_cb__coll("scatter", mpi_coll_scatter_description, name, pos);
285 static void _sg_cfg_cb__coll_barrier(const char *name, int pos){
286 _sg_cfg_cb__coll("barrier", mpi_coll_barrier_description, name, pos);
290 /* callback of the inclusion path */
291 static void _sg_cfg_cb__surf_path(const char *name, int pos)
293 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
294 xbt_dynar_push(surf_path, &path);
297 /* callback to decide if we want to use the model-checking */
298 #include "xbt_modinter.h"
300 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
303 static void _sg_cfg_cb_model_check(const char *name, int pos)
306 _sg_do_model_check = xbt_cfg_get_boolean(_sg_cfg_set, name);
308 if (xbt_cfg_get_boolean(_sg_cfg_set, name)) {
309 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");
314 extern int _sg_do_verbose_exit;
316 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
318 _sg_do_verbose_exit = xbt_cfg_get_boolean(_sg_cfg_set, name);
321 extern int _sg_do_clean_atexit;
323 static void _sg_cfg_cb_clean_atexit(const char *name, int pos)
325 _sg_do_clean_atexit = xbt_cfg_get_boolean(_sg_cfg_set, name);
328 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 default_value = (char*)"off";
550 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
551 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
552 xbt_cfgelm_boolean, &default_value, 0, 1,
554 default_value = (char*)"off";
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, &default_value, 0, 1,
561 /* do model-checking */
562 default_value = (char*)"off";
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", default_value);
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 default_value = (char*)"off";
593 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
594 "Enable/Disable timeout for wait requests",
595 xbt_cfgelm_boolean, NULL, 0, 1,
596 _mc_cfg_cb_timeout, NULL);
597 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", default_value);
599 /* Set max depth exploration */
600 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
601 "Specify the max depth of exploration (default : 1000)",
602 xbt_cfgelm_int, NULL, 0, 1,
603 _mc_cfg_cb_max_depth, NULL);
604 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
606 /* Set number of visited state stored for state comparison reduction*/
607 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
608 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
609 xbt_cfgelm_int, NULL, 0, 1,
610 _mc_cfg_cb_visited, NULL);
611 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
613 /* Set file name for dot output of graph state */
614 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
615 "Specify the name of dot file corresponding to graph state",
616 xbt_cfgelm_string, NULL, 0, 1,
617 _mc_cfg_cb_dot_output, NULL);
618 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
621 /* do verbose-exit */
622 default_value = (char*)"on";
623 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
624 "Activate the \"do nothing\" mode in Ctrl-C",
625 xbt_cfgelm_boolean, &default_value, 0, 1,
626 _sg_cfg_cb_verbose_exit, NULL);
629 /* context factory */
630 default_value = xbt_strdup("ucontext");
631 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
632 "Context factory to use in SIMIX (ucontext, thread or raw)",
633 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
635 /* stack size of contexts in Ko */
636 default_value_int = 128;
637 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
638 "Stack size of contexts in Kib (ucontext or raw only)",
639 xbt_cfgelm_int, &default_value_int, 1, 1,
640 _sg_cfg_cb_context_stack_size, NULL);
642 /* number of parallel threads for user processes */
643 default_value_int = 1;
644 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
645 "Number of parallel threads used to execute user contexts",
646 xbt_cfgelm_int, &default_value_int, 1, 1,
647 _sg_cfg_cb_contexts_nthreads, NULL);
649 /* minimal number of user contexts to be run in parallel */
650 default_value_int = 2;
651 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
652 "Minimal number of user contexts to be run in parallel (raw contexts only)",
653 xbt_cfgelm_int, &default_value_int, 1, 1,
654 _sg_cfg_cb_contexts_parallel_threshold, NULL);
656 /* synchronization mode for parallel user contexts */
658 default_value = xbt_strdup("futex");
659 #else //No futex on mac and posix is unimplememted yet
660 default_value = xbt_strdup("busy_wait");
662 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
663 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
664 xbt_cfgelm_string, &default_value, 1, 1,
665 _sg_cfg_cb_contexts_parallel_mode, NULL);
667 default_value = (char*)"no";
668 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
669 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
670 xbt_cfgelm_boolean, &default_value, 1, 1,
671 _sg_cfg_cb__surf_network_coordinates, NULL);
672 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", default_value);
674 default_value = (char*)"no";
675 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
676 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
677 xbt_cfgelm_boolean, &default_value, 0, 1,
678 _sg_cfg_cb__surf_network_crosstraffic, NULL);
679 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", default_value);
682 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
683 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
684 xbt_cfgelm_double, NULL, 1, 1,
685 _sg_cfg_cb__gtnets_jitter, NULL);
686 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
688 default_value_int = 10;
689 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
690 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
691 xbt_cfgelm_int, &default_value_int, 0, 1,
692 _sg_cfg_cb__gtnets_jitter_seed, NULL);
695 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
696 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
697 xbt_cfgelm_string, NULL, 1, 1,
699 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
703 double default_reference_speed = 20000.0;
704 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
705 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
706 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
709 default_value = xbt_strdup("no");
710 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
711 "Boolean indicating whether we should display the timing after simulation.",
712 xbt_cfgelm_boolean, &default_value, 1, 1, NULL,
714 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", default_value);
716 default_value = (char*)"yes";
717 xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
718 "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
719 xbt_cfgelm_boolean, &default_value, 1, 1, NULL,
721 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", default_value);
723 double default_threshold = 1e-6;
724 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
725 "Minimal computation time (in seconds) not discarded.",
726 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
729 int default_small_messages_threshold = 0;
730 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
731 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
732 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
735 int default_send_is_detached_threshold = 65536;
736 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
737 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
738 xbt_cfgelm_int, &default_send_is_detached_threshold, 1, 1, NULL,
741 //For smpi/bw_factor and smpi/lat_factor
742 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
743 //test is if( size >= thresholdN ) return valueN;
744 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
745 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
746 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
747 "Bandwidth factors for smpi.",
748 xbt_cfgelm_string, NULL, 1, 1, NULL,
750 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");
752 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
753 "Latency factors for smpi.",
754 xbt_cfgelm_string, NULL, 1, 1, NULL,
756 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");
758 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
759 "Small messages timings (MPI_Send minimum time for small messages)",
760 xbt_cfgelm_string, NULL, 1, 1, NULL,
762 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
764 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
765 "Small messages timings (MPI_Isend minimum time for small messages)",
766 xbt_cfgelm_string, NULL, 1, 1, NULL,
768 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
770 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
771 "Small messages timings (MPI_Recv minimum time for small messages)",
772 xbt_cfgelm_string, NULL, 1, 1, NULL,
774 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
775 double default_iprobe_time = 1e-4;
776 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
777 "Minimum time to inject inside a call to MPI_Iprobe",
778 xbt_cfgelm_double, &default_iprobe_time, 1, 1, NULL,
780 default_value = xbt_strdup("default");
781 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
782 "Which collective selector to use",
783 xbt_cfgelm_string, &default_value, 1, 1, NULL,
786 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
787 "Which collective to use for gather",
788 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_gather,
791 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
792 "Which collective to use for allgather",
793 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allgather,
796 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
797 "Which collective to use for barrier",
798 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_barrier,
801 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
802 "Which collective to use for reduce_scatter",
803 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_reduce_scatter,
806 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
807 "Which collective to use for scatter",
808 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_scatter,
811 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
812 "Which collective to use for allgatherv",
813 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allgatherv,
816 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
817 "Which collective to use for allreduce",
818 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allreduce,
821 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
822 "Which collective to use for alltoall",
823 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_alltoall,
826 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
827 "Which collective to use for alltoallv",
828 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_alltoallv,
831 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
832 "Which collective to use for bcast",
833 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_bcast,
836 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
837 "Which collective to use for reduce",
838 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_reduce,
842 default_value = (char*)"yes";
843 xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
844 "\"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.",
845 xbt_cfgelm_boolean, &default_value, 1, 1,
846 _sg_cfg_cb_clean_atexit, NULL);
847 xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", default_value);
850 /* retrieves the current directory of the current process */
851 const char *initial_path = __surf_get_initial_path();
852 xbt_assert((initial_path),
853 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
855 surf_path = xbt_dynar_new(sizeof(char *), NULL);
856 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
861 sg_config_cmd_line(argc, argv);
863 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
866 XBT_WARN("Call to sg_config_init() after initialization ignored");
870 void sg_config_finalize(void)
872 if (!_sg_init_status)
873 return; /* Not initialized yet. Nothing to do */
875 xbt_cfg_free(&_sg_cfg_set);
879 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
880 void surf_config_models_setup()
882 char *workstation_model_name;
883 int workstation_id = -1;
884 char *network_model_name = NULL;
885 char *cpu_model_name = NULL;
887 char *storage_model_name = NULL;
889 workstation_model_name =
890 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
891 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
892 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
893 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
895 /* Check whether we use a net/cpu model differing from the default ones, in which case
896 * we should switch to the "compound" workstation model to correctly dispatch stuff to
897 * the right net/cpu models.
900 if((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
901 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
902 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model"))
904 const char *val = "compound";
906 ("Switching workstation model to compound since you changed the network and/or cpu model(s)");
907 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
908 workstation_model_name = (char *) "compound";
911 XBT_DEBUG("Workstation model: %s", workstation_model_name);
913 find_model_description(surf_workstation_model_description,
914 workstation_model_name);
915 if (!strcmp(workstation_model_name, "compound")) {
919 xbt_assert(cpu_model_name,
920 "Set a cpu model to use with the 'compound' workstation model");
922 xbt_assert(network_model_name,
923 "Set a network model to use with the 'compound' workstation model");
926 find_model_description(surf_network_model_description,
929 find_model_description(surf_cpu_model_description, cpu_model_name);
931 surf_cpu_model_description[cpu_id].model_init_preparse();
932 surf_network_model_description[network_id].model_init_preparse();
935 XBT_DEBUG("Call workstation_model_init");
936 surf_workstation_model_description[workstation_id].model_init_preparse();
938 XBT_DEBUG("Call storage_model_init");
939 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
940 surf_storage_model_description[storage_id].model_init_preparse();
942 /* ********************************************************************* */
943 /* TUTORIAL: New model */
944 int new_model_id = -1;
945 char *new_model_name = NULL;
946 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
947 XBT_DEBUG("Call new model_init");
948 new_model_id = find_model_description(surf_new_model_description, new_model_name);
949 surf_new_model_description[new_model_id].model_init_preparse();
950 /* ********************************************************************* */
953 int sg_cfg_get_int(const char* name)
955 return xbt_cfg_get_int(_sg_cfg_set,name);
957 double sg_cfg_get_double(const char* name)
959 return xbt_cfg_get_double(_sg_cfg_set,name);
961 char* sg_cfg_get_string(const char* name)
963 return xbt_cfg_get_string(_sg_cfg_set,name);
965 int sg_cfg_get_boolean(const char* name)
967 return xbt_cfg_get_boolean(_sg_cfg_set,name);
969 void sg_cfg_get_peer(const char *name, char **peer, int *port)
971 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
973 xbt_dynar_t sg_cfg_get_dynar(const char* name)
975 return xbt_cfg_get_dynar(_sg_cfg_set,name);