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"
237 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
239 static void _sg_cfg_cb_model_check(const char *name, int pos)
241 _sg_do_model_check = xbt_cfg_get_int(_sg_cfg_set, name);
244 if (_sg_do_model_check) {
245 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");
250 extern int _sg_do_verbose_exit;
252 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
254 _sg_do_verbose_exit = xbt_cfg_get_int(_sg_cfg_set, name);
258 static void _sg_cfg_cb_context_factory(const char *name, int pos) {
259 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
262 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
264 smx_context_stack_size_was_set = 1;
265 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
268 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
270 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
273 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
275 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
278 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
280 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
281 if (!strcmp(mode_name, "posix")) {
282 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
284 else if (!strcmp(mode_name, "futex")) {
285 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
287 else if (!strcmp(mode_name, "busy_wait")) {
288 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
291 xbt_die("Command line setting of the parallel synchronization mode should "
292 "be one of \"posix\", \"futex\" or \"busy_wait\"");
296 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
299 char *val = xbt_cfg_get_string(_sg_cfg_set, name);
300 if (!strcmp(val, "yes")) {
301 if (!COORD_HOST_LEVEL) {
302 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
303 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
305 } else if (!strcmp(val, "no")) {
306 if (COORD_HOST_LEVEL)
307 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
309 xbt_die("Command line setting of whether to use coordinates must be either \"yes\" or \"no\"");
313 static void _sg_cfg_cb_surf_nthreads(const char *name, int pos)
315 surf_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
318 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
321 sg_network_crosstraffic = xbt_cfg_get_int(_sg_cfg_set, name);
325 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
327 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
330 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
332 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
336 /* create the config set, register what should be and parse the command line*/
337 void sg_config_init(int *argc, char **argv)
339 char *description = xbt_malloc(1024), *p = description;
341 double double_default_value;
342 int default_value_int;
345 /* Create the configuration support */
346 if (_sg_init_status == 0) { /* Only create stuff if not already inited */
348 "The model to use for the CPU. Possible values: ");
350 while (*(++p) != '\0');
351 for (i = 0; surf_cpu_model_description[i].name; i++)
352 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
353 surf_cpu_model_description[i].name);
355 ".\n (use 'help' as a value to see the long description of each model)");
356 default_value = xbt_strdup("Cas01");
357 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string,
358 &default_value, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
361 "The optimization modes to use for the CPU. Possible values: ");
363 while (*(++p) != '\0');
364 for (i = 0; surf_optimization_mode_description[i].name; i++)
365 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
366 surf_optimization_mode_description[i].name);
368 ".\n (use 'help' as a value to see the long description of each optimization mode)");
369 default_value = xbt_strdup("Lazy");
370 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description, xbt_cfgelm_string,
371 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
374 "The model to use for the storage. Possible values: ");
376 while (*(++p) != '\0');
377 for (i = 0; surf_storage_model_description[i].name; i++)
378 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
379 surf_storage_model_description[i].name);
381 ".\n (use 'help' as a value to see the long description of each model)");
382 default_value = xbt_strdup("default");
383 xbt_cfg_register(&_sg_cfg_set, "storage/model", description, xbt_cfgelm_string,
384 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
387 /* ********************************************************************* */
388 /* TUTORIAL: New model */
390 "The model to use for the New model. Possible values: ");
392 while (*(++p) != '\0');
393 for (i = 0; surf_new_model_description[i].name; i++)
394 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
395 surf_new_model_description[i].name);
397 ".\n (use 'help' as a value to see the long description of each model)");
398 default_value = xbt_strdup("default");
399 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description, xbt_cfgelm_string,
400 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
402 /* ********************************************************************* */
405 "The model to use for the network. Possible values: ");
407 while (*(++p) != '\0');
408 for (i = 0; surf_network_model_description[i].name; i++)
409 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
410 surf_network_model_description[i].name);
412 ".\n (use 'help' as a value to see the long description of each model)");
413 default_value = xbt_strdup("LV08");
414 xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string,
415 &default_value, 1, 1, &_sg_cfg_cb__network_model,
419 "The optimization modes to use for the network. Possible values: ");
421 while (*(++p) != '\0');
422 for (i = 0; surf_optimization_mode_description[i].name; i++)
423 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
424 surf_optimization_mode_description[i].name);
426 ".\n (use 'help' as a value to see the long description of each optimization mode)");
427 default_value = xbt_strdup("Lazy");
428 xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string,
429 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
432 "The model to use for the workstation. Possible values: ");
434 while (*(++p) != '\0');
435 for (i = 0; surf_workstation_model_description[i].name; i++)
436 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
437 surf_workstation_model_description[i].name);
439 ".\n (use 'help' as a value to see the long description of each model)");
440 default_value = xbt_strdup("default");
441 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description, xbt_cfgelm_string,
442 &default_value, 1, 1,
443 &_sg_cfg_cb__workstation_model, NULL);
445 xbt_free(description);
447 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
448 "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)",
449 xbt_cfgelm_double, NULL, 1, 1,
450 _sg_cfg_cb__tcp_gamma, NULL);
451 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
453 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
454 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
455 xbt_cfgelm_double, NULL, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
456 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001); // FIXME use setdefault everywhere here!
458 /* The parameters of network models */
460 double_default_value = 0.0;
461 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
462 "Minimum gap between two overlapping sends",
463 xbt_cfgelm_double, &double_default_value, 1, 1,
464 _sg_cfg_cb__sender_gap, NULL);
466 double_default_value = 1.0;
467 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
468 "Correction factor to apply to the provided latency (default value set by network model)",
469 xbt_cfgelm_double, &double_default_value, 1, 1,
470 _sg_cfg_cb__latency_factor, NULL);
471 double_default_value = 1.0;
472 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
473 "Correction factor to apply to the provided bandwidth (default value set by network model)",
474 xbt_cfgelm_double, &double_default_value, 1, 1,
475 _sg_cfg_cb__bandwidth_factor, NULL);
476 double_default_value = 0.0;
477 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
478 "Correction factor to apply to the weight of competing streams(default value set by network model)",
479 xbt_cfgelm_double, &double_default_value, 1, 1,
480 _sg_cfg_cb__weight_S, NULL);
483 xbt_cfg_register(&_sg_cfg_set, "path",
484 "Lookup path for inclusions in platform and deployment XML files",
485 xbt_cfgelm_string, NULL, 0, 0,
486 _sg_cfg_cb__surf_path, NULL);
488 default_value_int = 0;
489 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
490 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
491 xbt_cfgelm_int, &default_value_int, 0, 1,
493 default_value_int = 0;
494 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
495 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
496 xbt_cfgelm_int, &default_value_int, 0, 1,
500 /* do model-checking */
501 xbt_cfg_register(&_sg_cfg_set, "model-check",
502 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
503 xbt_cfgelm_int, NULL, 0, 1,
504 _sg_cfg_cb_model_check, NULL);
505 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check", 0);
507 /* do stateful model-checking */
508 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
509 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
510 "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.",
511 xbt_cfgelm_int, NULL, 0, 1,
512 _mc_cfg_cb_checkpoint, NULL);
513 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
515 /* do liveness model-checking */
516 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
517 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
518 xbt_cfgelm_string, NULL, 0, 1,
519 _mc_cfg_cb_property, NULL);
520 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
522 /* Specify the kind of model-checking reduction */
523 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
524 "Specify the kind of exploration reduction (either none or DPOR)",
525 xbt_cfgelm_string, NULL, 0, 1,
526 _mc_cfg_cb_reduce, NULL);
527 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
529 /* Enable/disable timeout for wait requests with model-checking */
530 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
531 "Enable/Disable timeout for wait requests",
532 xbt_cfgelm_int, NULL, 0, 1,
533 _mc_cfg_cb_timeout, NULL);
534 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/timeout", 0);
536 /* Set max depth exploration */
537 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
538 "Specify the max depth of exploration (default : 1000)",
539 xbt_cfgelm_int, NULL, 0, 1,
540 _mc_cfg_cb_max_depth, NULL);
541 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
543 /* Set number of visited state stored for state comparison reduction*/
544 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
545 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
546 xbt_cfgelm_int, NULL, 0, 1,
547 _mc_cfg_cb_visited, NULL);
548 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
551 /* do verbose-exit */
552 default_value_int = 1;
553 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
554 "Activate the \"do nothing\" mode in Ctrl-C",
555 xbt_cfgelm_int, &default_value_int, 0, 1,
556 _sg_cfg_cb_verbose_exit, NULL);
559 /* context factory */
560 default_value = xbt_strdup("ucontext");
561 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
562 "Context factory to use in SIMIX (ucontext, thread or raw)",
563 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
565 /* stack size of contexts in Ko */
566 default_value_int = 128;
567 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
568 "Stack size of contexts in Kib (ucontext or raw only)",
569 xbt_cfgelm_int, &default_value_int, 1, 1,
570 _sg_cfg_cb_context_stack_size, NULL);
572 /* number of parallel threads for user processes */
573 default_value_int = 1;
574 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
575 "Number of parallel threads used to execute user contexts",
576 xbt_cfgelm_int, &default_value_int, 1, 1,
577 _sg_cfg_cb_contexts_nthreads, NULL);
579 /* minimal number of user contexts to be run in parallel */
580 default_value_int = 2;
581 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
582 "Minimal number of user contexts to be run in parallel (raw contexts only)",
583 xbt_cfgelm_int, &default_value_int, 1, 1,
584 _sg_cfg_cb_contexts_parallel_threshold, NULL);
586 /* synchronization mode for parallel user contexts */
588 default_value = xbt_strdup("futex");
589 #else //No futex on mac and posix is unimplememted yet
590 default_value = xbt_strdup("busy_wait");
592 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
593 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
594 xbt_cfgelm_string, &default_value, 1, 1,
595 _sg_cfg_cb_contexts_parallel_mode, NULL);
597 /* number of parallel threads for Surf */
598 default_value_int = surf_get_nthreads();
599 xbt_cfg_register(&_sg_cfg_set, "surf/nthreads",
600 "Number of parallel threads used to update Surf models",
601 xbt_cfgelm_int, &default_value_int, 1, 1,
602 _sg_cfg_cb_surf_nthreads, NULL);
604 default_value = xbt_strdup("no");
605 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
606 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
607 xbt_cfgelm_string, &default_value, 1, 1,
608 _sg_cfg_cb__surf_network_coordinates, NULL);
609 xbt_cfg_setdefault_string(_sg_cfg_set, "network/coordinates", default_value);
611 default_value_int = 0;
612 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
613 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
614 xbt_cfgelm_int, &default_value_int, 0, 1,
615 _sg_cfg_cb__surf_network_crosstraffic, NULL);
616 xbt_cfg_setdefault_int(_sg_cfg_set, "network/crosstraffic", default_value_int);
619 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
620 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
621 xbt_cfgelm_double, NULL, 1, 1,
622 _sg_cfg_cb__gtnets_jitter, NULL);
623 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
625 default_value_int = 10;
626 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
627 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
628 xbt_cfgelm_int, &default_value_int, 0, 1,
629 _sg_cfg_cb__gtnets_jitter_seed, NULL);
632 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
633 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
634 xbt_cfgelm_string, NULL, 1, 1,
636 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
640 double default_reference_speed = 20000.0;
641 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
642 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
643 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
646 int default_display_timing = 0;
647 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
648 "Boolean indicating whether we should display the timing after simulation.",
649 xbt_cfgelm_int, &default_display_timing, 1, 1, NULL,
652 double default_threshold = 1e-6;
653 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
654 "Minimal computation time (in seconds) not discarded.",
655 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
658 int default_small_messages_threshold = 0;
659 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
660 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
661 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
664 //For smpi/bw_factor and smpi/lat_factor
665 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
666 //test is if( size >= thresholdN ) return valueN;
667 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
668 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
669 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
670 "Bandwidth factors for smpi.",
671 xbt_cfgelm_string, NULL, 1, 1, NULL,
673 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");
675 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
676 "Latency factors for smpi.",
677 xbt_cfgelm_string, NULL, 1, 1, NULL,
679 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");
684 /* retrieves the current directory of the current process */
685 const char *initial_path = __surf_get_initial_path();
686 xbt_assert((initial_path),
687 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
689 surf_path = xbt_dynar_new(sizeof(char *), NULL);
690 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
695 sg_config_cmd_line(argc, argv);
697 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
700 XBT_WARN("Call to sg_config_init() after initialization ignored");
704 void sg_config_finalize(void)
706 if (!_sg_init_status)
707 return; /* Not initialized yet. Nothing to do */
709 xbt_cfg_free(&_sg_cfg_set);
713 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
714 void surf_config_models_setup()
716 char *workstation_model_name;
717 int workstation_id = -1;
718 char *network_model_name = NULL;
719 char *cpu_model_name = NULL;
721 char *storage_model_name = NULL;
723 workstation_model_name =
724 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
725 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
726 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
727 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
729 /* Check whether we use a net/cpu model differing from the default ones, in which case
730 * we should switch to the "compound" workstation model to correctly dispatch stuff to
731 * the right net/cpu models.
734 if((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
735 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
736 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model"))
738 const char *val = "compound";
740 ("Switching workstation model to compound since you changed the network and/or cpu model(s)");
741 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
742 workstation_model_name = (char *) "compound";
745 XBT_DEBUG("Workstation model: %s", workstation_model_name);
747 find_model_description(surf_workstation_model_description,
748 workstation_model_name);
749 if (!strcmp(workstation_model_name, "compound")) {
753 xbt_assert(cpu_model_name,
754 "Set a cpu model to use with the 'compound' workstation model");
756 xbt_assert(network_model_name,
757 "Set a network model to use with the 'compound' workstation model");
760 find_model_description(surf_network_model_description,
763 find_model_description(surf_cpu_model_description, cpu_model_name);
765 surf_cpu_model_description[cpu_id].model_init_preparse();
766 surf_network_model_description[network_id].model_init_preparse();
769 XBT_DEBUG("Call workstation_model_init");
770 surf_workstation_model_description[workstation_id].model_init_preparse();
772 XBT_DEBUG("Call storage_model_init");
773 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
774 surf_storage_model_description[storage_id].model_init_preparse();
776 /* ********************************************************************* */
777 /* TUTORIAL: New model */
778 int new_model_id = -1;
779 char *new_model_name = NULL;
780 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
781 XBT_DEBUG("Call new model_init");
782 new_model_id = find_model_description(surf_new_model_description, new_model_name);
783 surf_new_model_description[new_model_id].model_init_preparse();
784 /* ********************************************************************* */
787 int sg_cfg_get_int(const char* name)
789 return xbt_cfg_get_int(_sg_cfg_set,name);
791 double sg_cfg_get_double(const char* name)
793 return xbt_cfg_get_double(_sg_cfg_set,name);
795 char* sg_cfg_get_string(const char* name)
797 return xbt_cfg_get_string(_sg_cfg_set,name);
799 void sg_cfg_get_peer(const char *name, char **peer, int *port)
801 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
803 xbt_dynar_t sg_cfg_get_dynar(const char* name)
805 return xbt_cfg_get_dynar(_sg_cfg_set,name);