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"
23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf,
24 "About the configuration of simgrid");
26 xbt_cfg_t _sg_cfg_set = NULL;
28 int _sg_init_status = 0; /* 0: beginning of time (config cannot be changed yet);
29 1: initialized: cfg_set created (config can now be changed);
30 2: configured: command line parsed and config part of platform file was integrated also, platform construction ongoing or done.
31 (Config cannot be changed anymore!) */
33 /* Parse the command line, looking for options */
34 static void sg_config_cmd_line(int *argc, char **argv)
40 for (j = i = 1; i < *argc; i++) {
41 if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
42 opt = strchr(argv[i], '=');
45 xbt_cfg_set_parse(_sg_cfg_set, opt);
46 XBT_DEBUG("Did apply '%s' as config setting", opt);
47 } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
49 ("Description of the configuration accepted by this simulator:\n");
50 xbt_cfg_help(_sg_cfg_set);
53 "Each of these configurations can be used by adding\n"
54 " --cfg=<option name>:<option value>\n"
55 "to the command line.\n"
56 "You can also use --help-models to see the details of all models known by this simulator.\n"
59 "You can also use --help-tracing to see the details of all tracing options known by this simulator.\n"
62 "You can also use --help-logs and --help-log-categories to see the details of logging output.\n"
66 } else if (!strcmp(argv[i], "--help-models")) {
69 model_help("workstation", surf_workstation_model_description);
71 model_help("CPU", surf_cpu_model_description);
73 model_help("network", surf_network_model_description);
74 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
75 for (k = 0; surf_optimization_mode_description[k].name; k++)
77 surf_optimization_mode_description[k].name,
78 surf_optimization_mode_description[k].description);
79 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
82 } else if (!strcmp(argv[i], "--help-tracing")) {
95 _sg_init_status=1; // get everything cleanly cleaned on exit
101 /* callback of the workstation/model variable */
102 static void _sg_cfg_cb__workstation_model(const char *name, int pos)
106 xbt_assert(_sg_init_status == 1,
107 "Cannot change the model after the initialization");
109 val = xbt_cfg_get_string(_sg_cfg_set, name);
111 if (!strcmp(val, "help")) {
112 model_help("workstation", surf_workstation_model_description);
116 /* Make sure that the model exists */
117 find_model_description(surf_workstation_model_description, val);
120 /* callback of the cpu/model variable */
121 static void _sg_cfg_cb__cpu_model(const char *name, int pos)
125 xbt_assert(_sg_init_status == 1,
126 "Cannot change the model after the initialization");
128 val = xbt_cfg_get_string(_sg_cfg_set, name);
130 if (!strcmp(val, "help")) {
131 model_help("CPU", surf_cpu_model_description);
135 /* New Module missing */
136 find_model_description(surf_cpu_model_description, val);
139 /* callback of the cpu/model variable */
140 static void _sg_cfg_cb__optimization_mode(const char *name, int pos)
144 xbt_assert(_sg_init_status == 1,
145 "Cannot change the model after the initialization");
147 val = xbt_cfg_get_string(_sg_cfg_set, name);
149 if (!strcmp(val, "help")) {
150 model_help("optimization", surf_optimization_mode_description);
154 /* New Module missing */
155 find_model_description(surf_optimization_mode_description, val);
158 /* callback of the cpu/model variable */
159 static void _sg_cfg_cb__storage_mode(const char *name, int pos)
163 xbt_assert(_sg_init_status == 1,
164 "Cannot change the model after the initialization");
166 val = xbt_cfg_get_string(_sg_cfg_set, name);
168 if (!strcmp(val, "help")) {
169 model_help("storage", surf_storage_model_description);
173 /* New Module missing */
174 find_model_description(surf_storage_model_description, val);
177 /* callback of the workstation_model variable */
178 static void _sg_cfg_cb__network_model(const char *name, int pos)
182 xbt_assert(_sg_init_status == 1,
183 "Cannot change the model after the initialization");
185 val = xbt_cfg_get_string(_sg_cfg_set, name);
187 if (!strcmp(val, "help")) {
188 model_help("network", surf_network_model_description);
192 /* New Module missing */
193 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);
228 /* callback of the inclusion path */
229 static void _sg_cfg_cb__surf_path(const char *name, int pos)
231 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
232 xbt_dynar_push(surf_path, &path);
235 /* callback to decide if we want to use the model-checking */
236 #include "xbt_modinter.h"
238 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
241 static void _sg_cfg_cb_model_check(const char *name, int pos)
244 _sg_do_model_check = xbt_cfg_get_int(_sg_cfg_set, name);
246 if (xbt_cfg_get_int(_sg_cfg_set, name)) {
247 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");
252 extern int _sg_do_verbose_exit;
254 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
256 _sg_do_verbose_exit = xbt_cfg_get_int(_sg_cfg_set, name);
260 static void _sg_cfg_cb_context_factory(const char *name, int pos) {
261 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
264 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
266 smx_context_stack_size_was_set = 1;
267 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
270 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
272 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
275 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
277 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
280 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
282 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
283 if (!strcmp(mode_name, "posix")) {
284 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
286 else if (!strcmp(mode_name, "futex")) {
287 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
289 else if (!strcmp(mode_name, "busy_wait")) {
290 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
293 xbt_die("Command line setting of the parallel synchronization mode should "
294 "be one of \"posix\", \"futex\" or \"busy_wait\"");
298 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
301 char *val = xbt_cfg_get_string(_sg_cfg_set, name);
302 if (!strcmp(val, "yes")) {
303 if (!COORD_HOST_LEVEL) {
304 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
305 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
307 } else if (!strcmp(val, "no")) {
308 if (COORD_HOST_LEVEL)
309 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
311 xbt_die("Command line setting of whether to use coordinates must be either \"yes\" or \"no\"");
315 static void _sg_cfg_cb_surf_nthreads(const char *name, int pos)
317 surf_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
320 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
323 sg_network_crosstraffic = xbt_cfg_get_int(_sg_cfg_set, name);
327 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
329 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
332 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
334 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
338 /* create the config set, register what should be and parse the command line*/
339 void sg_config_init(int *argc, char **argv)
341 char *description = xbt_malloc(1024), *p = description;
343 double double_default_value;
344 int default_value_int;
347 /* Create the configuration support */
348 if (_sg_init_status == 0) { /* Only create stuff if not already inited */
350 "The model to use for the CPU. Possible values: ");
352 while (*(++p) != '\0');
353 for (i = 0; surf_cpu_model_description[i].name; i++)
354 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
355 surf_cpu_model_description[i].name);
357 ".\n (use 'help' as a value to see the long description of each model)");
358 default_value = xbt_strdup("Cas01");
359 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string,
360 &default_value, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
363 "The optimization modes to use for the CPU. Possible values: ");
365 while (*(++p) != '\0');
366 for (i = 0; surf_optimization_mode_description[i].name; i++)
367 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
368 surf_optimization_mode_description[i].name);
370 ".\n (use 'help' as a value to see the long description of each optimization mode)");
371 default_value = xbt_strdup("Lazy");
372 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description, xbt_cfgelm_string,
373 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
376 "The model to use for the storage. Possible values: ");
378 while (*(++p) != '\0');
379 for (i = 0; surf_storage_model_description[i].name; i++)
380 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
381 surf_storage_model_description[i].name);
383 ".\n (use 'help' as a value to see the long description of each model)");
384 default_value = xbt_strdup("default");
385 xbt_cfg_register(&_sg_cfg_set, "storage/model", description, xbt_cfgelm_string,
386 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
389 /* ********************************************************************* */
390 /* TUTORIAL: New model */
392 "The model to use for the New model. Possible values: ");
394 while (*(++p) != '\0');
395 for (i = 0; surf_new_model_description[i].name; i++)
396 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
397 surf_new_model_description[i].name);
399 ".\n (use 'help' as a value to see the long description of each model)");
400 default_value = xbt_strdup("default");
401 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description, xbt_cfgelm_string,
402 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
404 /* ********************************************************************* */
407 "The model to use for the network. Possible values: ");
409 while (*(++p) != '\0');
410 for (i = 0; surf_network_model_description[i].name; i++)
411 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
412 surf_network_model_description[i].name);
414 ".\n (use 'help' as a value to see the long description of each model)");
415 default_value = xbt_strdup("LV08");
416 xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string,
417 &default_value, 1, 1, &_sg_cfg_cb__network_model,
421 "The optimization modes to use for the network. Possible values: ");
423 while (*(++p) != '\0');
424 for (i = 0; surf_optimization_mode_description[i].name; i++)
425 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
426 surf_optimization_mode_description[i].name);
428 ".\n (use 'help' as a value to see the long description of each optimization mode)");
429 default_value = xbt_strdup("Lazy");
430 xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string,
431 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
434 "The model to use for the workstation. Possible values: ");
436 while (*(++p) != '\0');
437 for (i = 0; surf_workstation_model_description[i].name; i++)
438 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
439 surf_workstation_model_description[i].name);
441 ".\n (use 'help' as a value to see the long description of each model)");
442 default_value = xbt_strdup("default");
443 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description, xbt_cfgelm_string,
444 &default_value, 1, 1,
445 &_sg_cfg_cb__workstation_model, NULL);
447 xbt_free(description);
449 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
450 "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)",
451 xbt_cfgelm_double, NULL, 1, 1,
452 _sg_cfg_cb__tcp_gamma, NULL);
453 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
455 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
456 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
457 xbt_cfgelm_double, NULL, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
458 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001); // FIXME use setdefault everywhere here!
460 /* The parameters of network models */
462 double_default_value = 0.0;
463 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
464 "Minimum gap between two overlapping sends",
465 xbt_cfgelm_double, &double_default_value, 1, 1,
466 _sg_cfg_cb__sender_gap, NULL);
468 double_default_value = 1.0;
469 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
470 "Correction factor to apply to the provided latency (default value set by network model)",
471 xbt_cfgelm_double, &double_default_value, 1, 1,
472 _sg_cfg_cb__latency_factor, NULL);
473 double_default_value = 1.0;
474 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
475 "Correction factor to apply to the provided bandwidth (default value set by network model)",
476 xbt_cfgelm_double, &double_default_value, 1, 1,
477 _sg_cfg_cb__bandwidth_factor, NULL);
478 double_default_value = 0.0;
479 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
480 "Correction factor to apply to the weight of competing streams(default value set by network model)",
481 xbt_cfgelm_double, &double_default_value, 1, 1,
482 _sg_cfg_cb__weight_S, NULL);
485 xbt_cfg_register(&_sg_cfg_set, "path",
486 "Lookup path for inclusions in platform and deployment XML files",
487 xbt_cfgelm_string, NULL, 0, 0,
488 _sg_cfg_cb__surf_path, NULL);
490 default_value_int = 0;
491 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
492 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
493 xbt_cfgelm_int, &default_value_int, 0, 1,
495 default_value_int = 0;
496 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
497 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
498 xbt_cfgelm_int, &default_value_int, 0, 1,
502 /* do model-checking */
503 xbt_cfg_register(&_sg_cfg_set, "model-check",
504 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
505 xbt_cfgelm_int, NULL, 0, 1,
506 _sg_cfg_cb_model_check, NULL);
507 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check", 0);
509 /* do stateful model-checking */
510 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
511 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
512 "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.",
513 xbt_cfgelm_int, NULL, 0, 1,
514 _mc_cfg_cb_checkpoint, NULL);
515 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
517 /* do liveness model-checking */
518 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
519 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
520 xbt_cfgelm_string, NULL, 0, 1,
521 _mc_cfg_cb_property, NULL);
522 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
524 /* Specify the kind of model-checking reduction */
525 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
526 "Specify the kind of exploration reduction (either none or DPOR)",
527 xbt_cfgelm_string, NULL, 0, 1,
528 _mc_cfg_cb_reduce, NULL);
529 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
531 /* Enable/disable timeout for wait requests with model-checking */
532 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
533 "Enable/Disable timeout for wait requests",
534 xbt_cfgelm_int, NULL, 0, 1,
535 _mc_cfg_cb_timeout, NULL);
536 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/timeout", 0);
538 /* Set max depth exploration */
539 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
540 "Specify the max depth of exploration (default : 1000)",
541 xbt_cfgelm_int, NULL, 0, 1,
542 _mc_cfg_cb_max_depth, NULL);
543 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
545 /* Set number of visited state stored for state comparison reduction*/
546 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
547 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
548 xbt_cfgelm_int, NULL, 0, 1,
549 _mc_cfg_cb_visited, NULL);
550 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
553 /* do verbose-exit */
554 default_value_int = 1;
555 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
556 "Activate the \"do nothing\" mode in Ctrl-C",
557 xbt_cfgelm_int, &default_value_int, 0, 1,
558 _sg_cfg_cb_verbose_exit, NULL);
561 /* context factory */
562 default_value = xbt_strdup("ucontext");
563 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
564 "Context factory to use in SIMIX (ucontext, thread or raw)",
565 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
567 /* stack size of contexts in Ko */
568 default_value_int = 128;
569 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
570 "Stack size of contexts in Kib (ucontext or raw only)",
571 xbt_cfgelm_int, &default_value_int, 1, 1,
572 _sg_cfg_cb_context_stack_size, NULL);
574 /* number of parallel threads for user processes */
575 default_value_int = 1;
576 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
577 "Number of parallel threads used to execute user contexts",
578 xbt_cfgelm_int, &default_value_int, 1, 1,
579 _sg_cfg_cb_contexts_nthreads, NULL);
581 /* minimal number of user contexts to be run in parallel */
582 default_value_int = 2;
583 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
584 "Minimal number of user contexts to be run in parallel (raw contexts only)",
585 xbt_cfgelm_int, &default_value_int, 1, 1,
586 _sg_cfg_cb_contexts_parallel_threshold, NULL);
588 /* synchronization mode for parallel user contexts */
590 default_value = xbt_strdup("futex");
591 #else //No futex on mac and posix is unimplememted yet
592 default_value = xbt_strdup("busy_wait");
594 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
595 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
596 xbt_cfgelm_string, &default_value, 1, 1,
597 _sg_cfg_cb_contexts_parallel_mode, NULL);
599 /* number of parallel threads for Surf */
600 default_value_int = surf_get_nthreads();
601 xbt_cfg_register(&_sg_cfg_set, "surf/nthreads",
602 "Number of parallel threads used to update Surf models",
603 xbt_cfgelm_int, &default_value_int, 1, 1,
604 _sg_cfg_cb_surf_nthreads, NULL);
606 default_value = xbt_strdup("no");
607 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
608 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
609 xbt_cfgelm_string, &default_value, 1, 1,
610 _sg_cfg_cb__surf_network_coordinates, NULL);
611 xbt_cfg_setdefault_string(_sg_cfg_set, "network/coordinates", default_value);
613 default_value_int = 0;
614 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
615 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
616 xbt_cfgelm_int, &default_value_int, 0, 1,
617 _sg_cfg_cb__surf_network_crosstraffic, NULL);
618 xbt_cfg_setdefault_int(_sg_cfg_set, "network/crosstraffic", default_value_int);
621 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
622 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
623 xbt_cfgelm_double, NULL, 1, 1,
624 _sg_cfg_cb__gtnets_jitter, NULL);
625 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
627 default_value_int = 10;
628 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
629 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
630 xbt_cfgelm_int, &default_value_int, 0, 1,
631 _sg_cfg_cb__gtnets_jitter_seed, NULL);
634 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
635 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
636 xbt_cfgelm_string, NULL, 1, 1,
638 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
642 double default_reference_speed = 20000.0;
643 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
644 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
645 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
648 int default_display_timing = 0;
649 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
650 "Boolean indicating whether we should display the timing after simulation.",
651 xbt_cfgelm_int, &default_display_timing, 1, 1, NULL,
654 double default_threshold = 1e-6;
655 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
656 "Minimal computation time (in seconds) not discarded.",
657 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
660 int default_small_messages_threshold = 0;
661 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
662 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
663 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
666 //For smpi/bw_factor and smpi/lat_factor
667 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
668 //test is if( size >= thresholdN ) return valueN;
669 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
670 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
671 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
672 "Bandwidth factors for smpi.",
673 xbt_cfgelm_string, NULL, 1, 1, NULL,
675 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");
677 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
678 "Latency factors for smpi.",
679 xbt_cfgelm_string, NULL, 1, 1, NULL,
681 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");
686 /* retrieves the current directory of the current process */
687 const char *initial_path = __surf_get_initial_path();
688 xbt_assert((initial_path),
689 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
691 surf_path = xbt_dynar_new(sizeof(char *), NULL);
692 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
697 sg_config_cmd_line(argc, argv);
699 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
702 XBT_WARN("Call to sg_config_init() after initialization ignored");
706 void sg_config_finalize(void)
708 if (!_sg_init_status)
709 return; /* Not initialized yet. Nothing to do */
711 xbt_cfg_free(&_sg_cfg_set);
715 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
716 void surf_config_models_setup()
718 char *workstation_model_name;
719 int workstation_id = -1;
720 char *network_model_name = NULL;
721 char *cpu_model_name = NULL;
723 char *storage_model_name = NULL;
725 workstation_model_name =
726 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
727 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
728 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
729 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
731 /* Check whether we use a net/cpu model differing from the default ones, in which case
732 * we should switch to the "compound" workstation model to correctly dispatch stuff to
733 * the right net/cpu models.
736 if((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
737 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
738 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model"))
740 const char *val = "compound";
742 ("Switching workstation model to compound since you changed the network and/or cpu model(s)");
743 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
744 workstation_model_name = (char *) "compound";
747 XBT_DEBUG("Workstation model: %s", workstation_model_name);
749 find_model_description(surf_workstation_model_description,
750 workstation_model_name);
751 if (!strcmp(workstation_model_name, "compound")) {
755 xbt_assert(cpu_model_name,
756 "Set a cpu model to use with the 'compound' workstation model");
758 xbt_assert(network_model_name,
759 "Set a network model to use with the 'compound' workstation model");
762 find_model_description(surf_network_model_description,
765 find_model_description(surf_cpu_model_description, cpu_model_name);
767 surf_cpu_model_description[cpu_id].model_init_preparse();
768 surf_network_model_description[network_id].model_init_preparse();
771 XBT_DEBUG("Call workstation_model_init");
772 surf_workstation_model_description[workstation_id].model_init_preparse();
774 XBT_DEBUG("Call storage_model_init");
775 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
776 surf_storage_model_description[storage_id].model_init_preparse();
778 /* ********************************************************************* */
779 /* TUTORIAL: New model */
780 int new_model_id = -1;
781 char *new_model_name = NULL;
782 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
783 XBT_DEBUG("Call new model_init");
784 new_model_id = find_model_description(surf_new_model_description, new_model_name);
785 surf_new_model_description[new_model_id].model_init_preparse();
786 /* ********************************************************************* */
789 int sg_cfg_get_int(const char* name)
791 return xbt_cfg_get_int(_sg_cfg_set,name);
793 double sg_cfg_get_double(const char* name)
795 return xbt_cfg_get_double(_sg_cfg_set,name);
797 char* sg_cfg_get_string(const char* name)
799 return xbt_cfg_get_string(_sg_cfg_set,name);
801 void sg_cfg_get_peer(const char *name, char **peer, int *port)
803 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
805 xbt_dynar_t sg_cfg_get_dynar(const char* name)
807 return xbt_cfg_get_dynar(_sg_cfg_set,name);