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_allgather(const char *name, int pos){
251 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
253 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
255 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
257 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
259 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
261 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
263 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
265 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
267 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
271 /* callback of the inclusion path */
272 static void _sg_cfg_cb__surf_path(const char *name, int pos)
274 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
275 xbt_dynar_push(surf_path, &path);
278 /* callback to decide if we want to use the model-checking */
279 #include "xbt_modinter.h"
281 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
284 static void _sg_cfg_cb_model_check(const char *name, int pos)
287 _sg_do_model_check = xbt_cfg_get_int(_sg_cfg_set, name);
289 if (xbt_cfg_get_int(_sg_cfg_set, name)) {
290 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");
295 extern int _sg_do_verbose_exit;
297 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
299 _sg_do_verbose_exit = xbt_cfg_get_int(_sg_cfg_set, name);
303 static void _sg_cfg_cb_context_factory(const char *name, int pos) {
304 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
307 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
309 smx_context_stack_size_was_set = 1;
310 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
313 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
315 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
318 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
320 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
323 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
325 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
326 if (!strcmp(mode_name, "posix")) {
327 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
329 else if (!strcmp(mode_name, "futex")) {
330 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
332 else if (!strcmp(mode_name, "busy_wait")) {
333 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
336 xbt_die("Command line setting of the parallel synchronization mode should "
337 "be one of \"posix\", \"futex\" or \"busy_wait\"");
341 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
344 char *val = xbt_cfg_get_string(_sg_cfg_set, name);
345 if (!strcmp(val, "yes")) {
346 if (!COORD_HOST_LEVEL) {
347 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
348 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
350 } else if (!strcmp(val, "no")) {
351 if (COORD_HOST_LEVEL)
352 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
354 xbt_die("Command line setting of whether to use coordinates must be either \"yes\" or \"no\"");
358 static void _sg_cfg_cb_surf_nthreads(const char *name, int pos)
360 surf_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
363 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
366 sg_network_crosstraffic = xbt_cfg_get_int(_sg_cfg_set, name);
370 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
372 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
375 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
377 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
381 /* create the config set, register what should be and parse the command line*/
382 void sg_config_init(int *argc, char **argv)
384 char *description = xbt_malloc(1024), *p = description;
386 double double_default_value;
387 int default_value_int;
390 /* Create the configuration support */
391 if (_sg_init_status == 0) { /* Only create stuff if not already inited */
393 "The model to use for the CPU. Possible values: ");
395 while (*(++p) != '\0');
396 for (i = 0; surf_cpu_model_description[i].name; i++)
397 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
398 surf_cpu_model_description[i].name);
400 ".\n (use 'help' as a value to see the long description of each model)");
401 default_value = xbt_strdup("Cas01");
402 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string,
403 &default_value, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
406 "The optimization modes to use for the CPU. Possible values: ");
408 while (*(++p) != '\0');
409 for (i = 0; surf_optimization_mode_description[i].name; i++)
410 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
411 surf_optimization_mode_description[i].name);
413 ".\n (use 'help' as a value to see the long description of each optimization mode)");
414 default_value = xbt_strdup("Lazy");
415 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description, xbt_cfgelm_string,
416 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
419 "The model to use for the storage. Possible values: ");
421 while (*(++p) != '\0');
422 for (i = 0; surf_storage_model_description[i].name; i++)
423 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
424 surf_storage_model_description[i].name);
426 ".\n (use 'help' as a value to see the long description of each model)");
427 default_value = xbt_strdup("default");
428 xbt_cfg_register(&_sg_cfg_set, "storage/model", description, xbt_cfgelm_string,
429 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
432 /* ********************************************************************* */
433 /* TUTORIAL: New model */
435 "The model to use for the New model. Possible values: ");
437 while (*(++p) != '\0');
438 for (i = 0; surf_new_model_description[i].name; i++)
439 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
440 surf_new_model_description[i].name);
442 ".\n (use 'help' as a value to see the long description of each model)");
443 default_value = xbt_strdup("default");
444 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description, xbt_cfgelm_string,
445 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
447 /* ********************************************************************* */
450 "The model to use for the network. Possible values: ");
452 while (*(++p) != '\0');
453 for (i = 0; surf_network_model_description[i].name; i++)
454 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
455 surf_network_model_description[i].name);
457 ".\n (use 'help' as a value to see the long description of each model)");
458 default_value = xbt_strdup("LV08");
459 xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string,
460 &default_value, 1, 1, &_sg_cfg_cb__network_model,
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 default_value = xbt_strdup("Lazy");
473 xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string,
474 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
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 default_value = xbt_strdup("default");
486 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description, xbt_cfgelm_string,
487 &default_value, 1, 1,
488 &_sg_cfg_cb__workstation_model, NULL);
490 xbt_free(description);
492 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
493 "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)",
494 xbt_cfgelm_double, NULL, 1, 1,
495 _sg_cfg_cb__tcp_gamma, NULL);
496 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
498 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
499 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
500 xbt_cfgelm_double, NULL, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
501 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
503 /* The parameters of network models */
505 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
506 "Minimum gap between two overlapping sends",
507 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
508 _sg_cfg_cb__sender_gap, NULL);
510 double_default_value = 1.0; // FIXME use setdefault everywhere here!
511 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
512 "Correction factor to apply to the provided latency (default value set by network model)",
513 xbt_cfgelm_double, &double_default_value, 1, 1,
514 _sg_cfg_cb__latency_factor, NULL);
515 double_default_value = 1.0;
516 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
517 "Correction factor to apply to the provided bandwidth (default value set by network model)",
518 xbt_cfgelm_double, &double_default_value, 1, 1,
519 _sg_cfg_cb__bandwidth_factor, NULL);
521 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
522 "Correction factor to apply to the weight of competing streams (default value set by network model)",
523 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
524 _sg_cfg_cb__weight_S, NULL);
527 xbt_cfg_register(&_sg_cfg_set, "path",
528 "Lookup path for inclusions in platform and deployment XML files",
529 xbt_cfgelm_string, NULL, 0, 0,
530 _sg_cfg_cb__surf_path, NULL);
532 default_value_int = 0;
533 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
534 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
535 xbt_cfgelm_int, &default_value_int, 0, 1,
537 default_value_int = 0;
538 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
539 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
540 xbt_cfgelm_int, &default_value_int, 0, 1,
544 /* do model-checking */
545 xbt_cfg_register(&_sg_cfg_set, "model-check",
546 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
547 xbt_cfgelm_int, NULL, 0, 1,
548 _sg_cfg_cb_model_check, NULL);
549 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check", 0);
551 /* do stateful model-checking */
552 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
553 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
554 "If value=1, one checkpoint is saved for each step => faster verification, but huge memory consumption; higher values are good compromises between speed and memory consumption.",
555 xbt_cfgelm_int, NULL, 0, 1,
556 _mc_cfg_cb_checkpoint, NULL);
557 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
559 /* do liveness model-checking */
560 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
561 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
562 xbt_cfgelm_string, NULL, 0, 1,
563 _mc_cfg_cb_property, NULL);
564 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
566 /* Specify the kind of model-checking reduction */
567 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
568 "Specify the kind of exploration reduction (either none or DPOR)",
569 xbt_cfgelm_string, NULL, 0, 1,
570 _mc_cfg_cb_reduce, NULL);
571 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
573 /* Enable/disable timeout for wait requests with model-checking */
574 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
575 "Enable/Disable timeout for wait requests",
576 xbt_cfgelm_int, NULL, 0, 1,
577 _mc_cfg_cb_timeout, NULL);
578 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/timeout", 0);
580 /* Set max depth exploration */
581 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
582 "Specify the max depth of exploration (default : 1000)",
583 xbt_cfgelm_int, NULL, 0, 1,
584 _mc_cfg_cb_max_depth, NULL);
585 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
587 /* Set number of visited state stored for state comparison reduction*/
588 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
589 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
590 xbt_cfgelm_int, NULL, 0, 1,
591 _mc_cfg_cb_visited, NULL);
592 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
594 /* Set file name for dot output of graph state */
595 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
596 "Specify the name of dot file corresponding to graph state",
597 xbt_cfgelm_string, NULL, 0, 1,
598 _mc_cfg_cb_dot_output, NULL);
599 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
602 /* do verbose-exit */
603 default_value_int = 1;
604 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
605 "Activate the \"do nothing\" mode in Ctrl-C",
606 xbt_cfgelm_int, &default_value_int, 0, 1,
607 _sg_cfg_cb_verbose_exit, NULL);
610 /* context factory */
611 default_value = xbt_strdup("ucontext");
612 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
613 "Context factory to use in SIMIX (ucontext, thread or raw)",
614 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
616 /* stack size of contexts in Ko */
617 default_value_int = 128;
618 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
619 "Stack size of contexts in Kib (ucontext or raw only)",
620 xbt_cfgelm_int, &default_value_int, 1, 1,
621 _sg_cfg_cb_context_stack_size, NULL);
623 /* number of parallel threads for user processes */
624 default_value_int = 1;
625 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
626 "Number of parallel threads used to execute user contexts",
627 xbt_cfgelm_int, &default_value_int, 1, 1,
628 _sg_cfg_cb_contexts_nthreads, NULL);
630 /* minimal number of user contexts to be run in parallel */
631 default_value_int = 2;
632 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
633 "Minimal number of user contexts to be run in parallel (raw contexts only)",
634 xbt_cfgelm_int, &default_value_int, 1, 1,
635 _sg_cfg_cb_contexts_parallel_threshold, NULL);
637 /* synchronization mode for parallel user contexts */
639 default_value = xbt_strdup("futex");
640 #else //No futex on mac and posix is unimplememted yet
641 default_value = xbt_strdup("busy_wait");
643 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
644 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
645 xbt_cfgelm_string, &default_value, 1, 1,
646 _sg_cfg_cb_contexts_parallel_mode, NULL);
648 /* number of parallel threads for Surf */
649 default_value_int = surf_get_nthreads();
650 xbt_cfg_register(&_sg_cfg_set, "surf/nthreads",
651 "Number of parallel threads used to update Surf models",
652 xbt_cfgelm_int, &default_value_int, 1, 1,
653 _sg_cfg_cb_surf_nthreads, NULL);
655 default_value = xbt_strdup("no");
656 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
657 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
658 xbt_cfgelm_string, &default_value, 1, 1,
659 _sg_cfg_cb__surf_network_coordinates, NULL);
660 xbt_cfg_setdefault_string(_sg_cfg_set, "network/coordinates", default_value);
662 default_value_int = 0;
663 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
664 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
665 xbt_cfgelm_int, &default_value_int, 0, 1,
666 _sg_cfg_cb__surf_network_crosstraffic, NULL);
667 xbt_cfg_setdefault_int(_sg_cfg_set, "network/crosstraffic", default_value_int);
670 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
671 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
672 xbt_cfgelm_double, NULL, 1, 1,
673 _sg_cfg_cb__gtnets_jitter, NULL);
674 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
676 default_value_int = 10;
677 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
678 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
679 xbt_cfgelm_int, &default_value_int, 0, 1,
680 _sg_cfg_cb__gtnets_jitter_seed, NULL);
683 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
684 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
685 xbt_cfgelm_string, NULL, 1, 1,
687 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
691 double default_reference_speed = 20000.0;
692 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
693 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
694 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
697 int default_display_timing = 0;
698 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
699 "Boolean indicating whether we should display the timing after simulation.",
700 xbt_cfgelm_int, &default_display_timing, 1, 1, NULL,
703 double default_threshold = 1e-6;
704 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
705 "Minimal computation time (in seconds) not discarded.",
706 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
709 int default_small_messages_threshold = 0;
710 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
711 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
712 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
715 int default_send_is_detached_threshold = 65536;
716 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
717 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
718 xbt_cfgelm_int, &default_send_is_detached_threshold, 1, 1, NULL,
721 //For smpi/bw_factor and smpi/lat_factor
722 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
723 //test is if( size >= thresholdN ) return valueN;
724 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
725 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
726 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
727 "Bandwidth factors for smpi.",
728 xbt_cfgelm_string, NULL, 1, 1, NULL,
730 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");
732 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
733 "Latency factors for smpi.",
734 xbt_cfgelm_string, NULL, 1, 1, NULL,
736 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");
738 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
739 "Small messages timings (MPI_Send minimum time for small messages)",
740 xbt_cfgelm_string, NULL, 1, 1, NULL,
742 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
744 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
745 "Small messages timings (MPI_Isend minimum time for small messages)",
746 xbt_cfgelm_string, NULL, 1, 1, NULL,
748 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
750 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
751 "Small messages timings (MPI_Recv minimum time for small messages)",
752 xbt_cfgelm_string, NULL, 1, 1, NULL,
754 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
756 default_value = xbt_strdup("default");
757 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
758 "Which collective to use for allgather",
759 xbt_cfgelm_string, &default_value, 1, 1, &_sg_cfg_cb__coll_allgather,
762 default_value = xbt_strdup("default");
763 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
764 "Which collective to use for allreduce",
765 xbt_cfgelm_string, &default_value, 1, 1, &_sg_cfg_cb__coll_allreduce,
768 default_value = xbt_strdup("ompi");
769 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
770 "Which collective to use for alltoall",
771 xbt_cfgelm_string, &default_value, 1, 1, &_sg_cfg_cb__coll_alltoall,
774 default_value = xbt_strdup("default");
775 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
776 "Which collective to use for bcast",
777 xbt_cfgelm_string, &default_value, 1, 1, &_sg_cfg_cb__coll_bcast,
781 default_value = xbt_strdup("default");
782 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
783 "Which collective to use for reduce",
784 xbt_cfgelm_string, &default_value, 1, 1, &_sg_cfg_cb__coll_reduce,
789 /* retrieves the current directory of the current process */
790 const char *initial_path = __surf_get_initial_path();
791 xbt_assert((initial_path),
792 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
794 surf_path = xbt_dynar_new(sizeof(char *), NULL);
795 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
800 sg_config_cmd_line(argc, argv);
802 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
805 XBT_WARN("Call to sg_config_init() after initialization ignored");
809 void sg_config_finalize(void)
811 if (!_sg_init_status)
812 return; /* Not initialized yet. Nothing to do */
814 xbt_cfg_free(&_sg_cfg_set);
818 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
819 void surf_config_models_setup()
821 char *workstation_model_name;
822 int workstation_id = -1;
823 char *network_model_name = NULL;
824 char *cpu_model_name = NULL;
826 char *storage_model_name = NULL;
828 workstation_model_name =
829 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
830 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
831 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
832 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
834 /* Check whether we use a net/cpu model differing from the default ones, in which case
835 * we should switch to the "compound" workstation model to correctly dispatch stuff to
836 * the right net/cpu models.
839 if((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
840 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
841 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model"))
843 const char *val = "compound";
845 ("Switching workstation model to compound since you changed the network and/or cpu model(s)");
846 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
847 workstation_model_name = (char *) "compound";
850 XBT_DEBUG("Workstation model: %s", workstation_model_name);
852 find_model_description(surf_workstation_model_description,
853 workstation_model_name);
854 if (!strcmp(workstation_model_name, "compound")) {
858 xbt_assert(cpu_model_name,
859 "Set a cpu model to use with the 'compound' workstation model");
861 xbt_assert(network_model_name,
862 "Set a network model to use with the 'compound' workstation model");
865 find_model_description(surf_network_model_description,
868 find_model_description(surf_cpu_model_description, cpu_model_name);
870 surf_cpu_model_description[cpu_id].model_init_preparse();
871 surf_network_model_description[network_id].model_init_preparse();
874 XBT_DEBUG("Call workstation_model_init");
875 surf_workstation_model_description[workstation_id].model_init_preparse();
877 XBT_DEBUG("Call storage_model_init");
878 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
879 surf_storage_model_description[storage_id].model_init_preparse();
881 /* ********************************************************************* */
882 /* TUTORIAL: New model */
883 int new_model_id = -1;
884 char *new_model_name = NULL;
885 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
886 XBT_DEBUG("Call new model_init");
887 new_model_id = find_model_description(surf_new_model_description, new_model_name);
888 surf_new_model_description[new_model_id].model_init_preparse();
889 /* ********************************************************************* */
892 int sg_cfg_get_int(const char* name)
894 return xbt_cfg_get_int(_sg_cfg_set,name);
896 double sg_cfg_get_double(const char* name)
898 return xbt_cfg_get_double(_sg_cfg_set,name);
900 char* sg_cfg_get_string(const char* name)
902 return xbt_cfg_get_string(_sg_cfg_set,name);
904 void sg_cfg_get_peer(const char *name, char **peer, int *port)
906 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
908 xbt_dynar_t sg_cfg_get_dynar(const char* name)
910 return xbt_cfg_get_dynar(_sg_cfg_set,name);