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);
229 /* callback of the inclusion path */
230 static void _sg_cfg_cb__surf_path(const char *name, int pos)
232 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
233 xbt_dynar_push(surf_path, &path);
236 /* callback to decide if we want to use the model-checking */
237 #include "xbt_modinter.h"
239 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
242 static void _sg_cfg_cb_model_check(const char *name, int pos)
245 _sg_do_model_check = xbt_cfg_get_int(_sg_cfg_set, name);
247 if (xbt_cfg_get_int(_sg_cfg_set, name)) {
248 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");
253 extern int _sg_do_verbose_exit;
255 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
257 _sg_do_verbose_exit = xbt_cfg_get_int(_sg_cfg_set, name);
261 static void _sg_cfg_cb_context_factory(const char *name, int pos) {
262 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
265 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
267 smx_context_stack_size_was_set = 1;
268 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
271 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
273 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
276 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
278 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
281 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
283 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
284 if (!strcmp(mode_name, "posix")) {
285 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
287 else if (!strcmp(mode_name, "futex")) {
288 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
290 else if (!strcmp(mode_name, "busy_wait")) {
291 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
294 xbt_die("Command line setting of the parallel synchronization mode should "
295 "be one of \"posix\", \"futex\" or \"busy_wait\"");
299 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
302 char *val = xbt_cfg_get_string(_sg_cfg_set, name);
303 if (!strcmp(val, "yes")) {
304 if (!COORD_HOST_LEVEL) {
305 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
306 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
308 } else if (!strcmp(val, "no")) {
309 if (COORD_HOST_LEVEL)
310 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
312 xbt_die("Command line setting of whether to use coordinates must be either \"yes\" or \"no\"");
316 static void _sg_cfg_cb_surf_nthreads(const char *name, int pos)
318 surf_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
321 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
324 sg_network_crosstraffic = xbt_cfg_get_int(_sg_cfg_set, name);
328 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
330 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
333 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
335 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
339 /* create the config set, register what should be and parse the command line*/
340 void sg_config_init(int *argc, char **argv)
342 char *description = xbt_malloc(1024), *p = description;
344 double double_default_value;
345 int default_value_int;
348 TRACE_add_start_function(TRACE_surf_alloc);
349 TRACE_add_end_function(TRACE_surf_release);
351 /* Create the configuration support */
352 if (_sg_init_status == 0) { /* Only create stuff if not already inited */
354 "The model to use for the CPU. Possible values: ");
356 while (*(++p) != '\0');
357 for (i = 0; surf_cpu_model_description[i].name; i++)
358 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
359 surf_cpu_model_description[i].name);
361 ".\n (use 'help' as a value to see the long description of each model)");
362 default_value = xbt_strdup("Cas01");
363 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string,
364 &default_value, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
367 "The optimization modes to use for the CPU. Possible values: ");
369 while (*(++p) != '\0');
370 for (i = 0; surf_optimization_mode_description[i].name; i++)
371 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
372 surf_optimization_mode_description[i].name);
374 ".\n (use 'help' as a value to see the long description of each optimization mode)");
375 default_value = xbt_strdup("Lazy");
376 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description, xbt_cfgelm_string,
377 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
380 "The model to use for the storage. Possible values: ");
382 while (*(++p) != '\0');
383 for (i = 0; surf_storage_model_description[i].name; i++)
384 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
385 surf_storage_model_description[i].name);
387 ".\n (use 'help' as a value to see the long description of each model)");
388 default_value = xbt_strdup("default");
389 xbt_cfg_register(&_sg_cfg_set, "storage/model", description, xbt_cfgelm_string,
390 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
393 /* ********************************************************************* */
394 /* TUTORIAL: New model */
396 "The model to use for the New model. Possible values: ");
398 while (*(++p) != '\0');
399 for (i = 0; surf_new_model_description[i].name; i++)
400 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
401 surf_new_model_description[i].name);
403 ".\n (use 'help' as a value to see the long description of each model)");
404 default_value = xbt_strdup("default");
405 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description, xbt_cfgelm_string,
406 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
408 /* ********************************************************************* */
411 "The model to use for the network. Possible values: ");
413 while (*(++p) != '\0');
414 for (i = 0; surf_network_model_description[i].name; i++)
415 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
416 surf_network_model_description[i].name);
418 ".\n (use 'help' as a value to see the long description of each model)");
419 default_value = xbt_strdup("LV08");
420 xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string,
421 &default_value, 1, 1, &_sg_cfg_cb__network_model,
425 "The optimization modes to use for the network. Possible values: ");
427 while (*(++p) != '\0');
428 for (i = 0; surf_optimization_mode_description[i].name; i++)
429 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
430 surf_optimization_mode_description[i].name);
432 ".\n (use 'help' as a value to see the long description of each optimization mode)");
433 default_value = xbt_strdup("Lazy");
434 xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string,
435 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
438 "The model to use for the workstation. Possible values: ");
440 while (*(++p) != '\0');
441 for (i = 0; surf_workstation_model_description[i].name; i++)
442 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
443 surf_workstation_model_description[i].name);
445 ".\n (use 'help' as a value to see the long description of each model)");
446 default_value = xbt_strdup("default");
447 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description, xbt_cfgelm_string,
448 &default_value, 1, 1,
449 &_sg_cfg_cb__workstation_model, NULL);
451 xbt_free(description);
453 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
454 "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)",
455 xbt_cfgelm_double, NULL, 1, 1,
456 _sg_cfg_cb__tcp_gamma, NULL);
457 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
459 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
460 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
461 xbt_cfgelm_double, NULL, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
462 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
464 /* The parameters of network models */
466 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
467 "Minimum gap between two overlapping sends",
468 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
469 _sg_cfg_cb__sender_gap, NULL);
471 double_default_value = 1.0; // FIXME use setdefault everywhere here!
472 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
473 "Correction factor to apply to the provided latency (default value set by network model)",
474 xbt_cfgelm_double, &double_default_value, 1, 1,
475 _sg_cfg_cb__latency_factor, NULL);
476 double_default_value = 1.0;
477 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
478 "Correction factor to apply to the provided bandwidth (default value set by network model)",
479 xbt_cfgelm_double, &double_default_value, 1, 1,
480 _sg_cfg_cb__bandwidth_factor, NULL);
482 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
483 "Correction factor to apply to the weight of competing streams(default value set by network model)",
484 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
485 _sg_cfg_cb__weight_S, NULL);
488 xbt_cfg_register(&_sg_cfg_set, "path",
489 "Lookup path for inclusions in platform and deployment XML files",
490 xbt_cfgelm_string, NULL, 0, 0,
491 _sg_cfg_cb__surf_path, NULL);
493 default_value_int = 0;
494 xbt_cfg_register(&_sg_cfg_set, "cpu/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,
498 default_value_int = 0;
499 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
500 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
501 xbt_cfgelm_int, &default_value_int, 0, 1,
505 /* do model-checking */
506 xbt_cfg_register(&_sg_cfg_set, "model-check",
507 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
508 xbt_cfgelm_int, NULL, 0, 1,
509 _sg_cfg_cb_model_check, NULL);
510 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check", 0);
512 /* do stateful model-checking */
513 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
514 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
515 "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.",
516 xbt_cfgelm_int, NULL, 0, 1,
517 _mc_cfg_cb_checkpoint, NULL);
518 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
520 /* do liveness model-checking */
521 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
522 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
523 xbt_cfgelm_string, NULL, 0, 1,
524 _mc_cfg_cb_property, NULL);
525 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
527 /* Specify the kind of model-checking reduction */
528 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
529 "Specify the kind of exploration reduction (either none or DPOR)",
530 xbt_cfgelm_string, NULL, 0, 1,
531 _mc_cfg_cb_reduce, NULL);
532 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
534 /* Enable/disable timeout for wait requests with model-checking */
535 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
536 "Enable/Disable timeout for wait requests",
537 xbt_cfgelm_int, NULL, 0, 1,
538 _mc_cfg_cb_timeout, NULL);
539 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/timeout", 0);
541 /* Set max depth exploration */
542 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
543 "Specify the max depth of exploration (default : 1000)",
544 xbt_cfgelm_int, NULL, 0, 1,
545 _mc_cfg_cb_max_depth, NULL);
546 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
548 /* Set number of visited state stored for state comparison reduction*/
549 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
550 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
551 xbt_cfgelm_int, NULL, 0, 1,
552 _mc_cfg_cb_visited, NULL);
553 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
556 /* do verbose-exit */
557 default_value_int = 1;
558 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
559 "Activate the \"do nothing\" mode in Ctrl-C",
560 xbt_cfgelm_int, &default_value_int, 0, 1,
561 _sg_cfg_cb_verbose_exit, NULL);
564 /* context factory */
565 default_value = xbt_strdup("ucontext");
566 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
567 "Context factory to use in SIMIX (ucontext, thread or raw)",
568 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
570 /* stack size of contexts in Ko */
571 default_value_int = 128;
572 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
573 "Stack size of contexts in Kib (ucontext or raw only)",
574 xbt_cfgelm_int, &default_value_int, 1, 1,
575 _sg_cfg_cb_context_stack_size, NULL);
577 /* number of parallel threads for user processes */
578 default_value_int = 1;
579 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
580 "Number of parallel threads used to execute user contexts",
581 xbt_cfgelm_int, &default_value_int, 1, 1,
582 _sg_cfg_cb_contexts_nthreads, NULL);
584 /* minimal number of user contexts to be run in parallel */
585 default_value_int = 2;
586 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
587 "Minimal number of user contexts to be run in parallel (raw contexts only)",
588 xbt_cfgelm_int, &default_value_int, 1, 1,
589 _sg_cfg_cb_contexts_parallel_threshold, NULL);
591 /* synchronization mode for parallel user contexts */
593 default_value = xbt_strdup("futex");
594 #else //No futex on mac and posix is unimplememted yet
595 default_value = xbt_strdup("busy_wait");
597 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
598 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
599 xbt_cfgelm_string, &default_value, 1, 1,
600 _sg_cfg_cb_contexts_parallel_mode, NULL);
602 /* number of parallel threads for Surf */
603 default_value_int = surf_get_nthreads();
604 xbt_cfg_register(&_sg_cfg_set, "surf/nthreads",
605 "Number of parallel threads used to update Surf models",
606 xbt_cfgelm_int, &default_value_int, 1, 1,
607 _sg_cfg_cb_surf_nthreads, NULL);
609 default_value = xbt_strdup("no");
610 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
611 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
612 xbt_cfgelm_string, &default_value, 1, 1,
613 _sg_cfg_cb__surf_network_coordinates, NULL);
614 xbt_cfg_setdefault_string(_sg_cfg_set, "network/coordinates", default_value);
616 default_value_int = 0;
617 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
618 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
619 xbt_cfgelm_int, &default_value_int, 0, 1,
620 _sg_cfg_cb__surf_network_crosstraffic, NULL);
621 xbt_cfg_setdefault_int(_sg_cfg_set, "network/crosstraffic", default_value_int);
624 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
625 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
626 xbt_cfgelm_double, NULL, 1, 1,
627 _sg_cfg_cb__gtnets_jitter, NULL);
628 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
630 default_value_int = 10;
631 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
632 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
633 xbt_cfgelm_int, &default_value_int, 0, 1,
634 _sg_cfg_cb__gtnets_jitter_seed, NULL);
637 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
638 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
639 xbt_cfgelm_string, NULL, 1, 1,
641 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
645 double default_reference_speed = 20000.0;
646 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
647 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
648 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
651 int default_display_timing = 0;
652 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
653 "Boolean indicating whether we should display the timing after simulation.",
654 xbt_cfgelm_int, &default_display_timing, 1, 1, NULL,
657 double default_threshold = 1e-6;
658 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
659 "Minimal computation time (in seconds) not discarded.",
660 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
663 int default_small_messages_threshold = 0;
664 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
665 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
666 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
669 //For smpi/bw_factor and smpi/lat_factor
670 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
671 //test is if( size >= thresholdN ) return valueN;
672 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
673 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
674 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
675 "Bandwidth factors for smpi.",
676 xbt_cfgelm_string, NULL, 1, 1, NULL,
678 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");
680 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
681 "Latency factors for smpi.",
682 xbt_cfgelm_string, NULL, 1, 1, NULL,
684 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");
689 /* retrieves the current directory of the current process */
690 const char *initial_path = __surf_get_initial_path();
691 xbt_assert((initial_path),
692 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
694 surf_path = xbt_dynar_new(sizeof(char *), NULL);
695 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
700 sg_config_cmd_line(argc, argv);
702 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
705 XBT_WARN("Call to sg_config_init() after initialization ignored");
709 void sg_config_finalize(void)
711 if (!_sg_init_status)
712 return; /* Not initialized yet. Nothing to do */
714 xbt_cfg_free(&_sg_cfg_set);
718 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
719 void surf_config_models_setup()
721 char *workstation_model_name;
722 int workstation_id = -1;
723 char *network_model_name = NULL;
724 char *cpu_model_name = NULL;
726 char *storage_model_name = NULL;
728 workstation_model_name =
729 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
730 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
731 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
732 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
734 /* Check whether we use a net/cpu model differing from the default ones, in which case
735 * we should switch to the "compound" workstation model to correctly dispatch stuff to
736 * the right net/cpu models.
739 if((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
740 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
741 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model"))
743 const char *val = "compound";
745 ("Switching workstation model to compound since you changed the network and/or cpu model(s)");
746 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
747 workstation_model_name = (char *) "compound";
750 XBT_DEBUG("Workstation model: %s", workstation_model_name);
752 find_model_description(surf_workstation_model_description,
753 workstation_model_name);
754 if (!strcmp(workstation_model_name, "compound")) {
758 xbt_assert(cpu_model_name,
759 "Set a cpu model to use with the 'compound' workstation model");
761 xbt_assert(network_model_name,
762 "Set a network model to use with the 'compound' workstation model");
765 find_model_description(surf_network_model_description,
768 find_model_description(surf_cpu_model_description, cpu_model_name);
770 surf_cpu_model_description[cpu_id].model_init_preparse();
771 surf_network_model_description[network_id].model_init_preparse();
774 XBT_DEBUG("Call workstation_model_init");
775 surf_workstation_model_description[workstation_id].model_init_preparse();
777 XBT_DEBUG("Call storage_model_init");
778 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
779 surf_storage_model_description[storage_id].model_init_preparse();
781 /* ********************************************************************* */
782 /* TUTORIAL: New model */
783 int new_model_id = -1;
784 char *new_model_name = NULL;
785 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
786 XBT_DEBUG("Call new model_init");
787 new_model_id = find_model_description(surf_new_model_description, new_model_name);
788 surf_new_model_description[new_model_id].model_init_preparse();
789 /* ********************************************************************* */
792 int sg_cfg_get_int(const char* name)
794 return xbt_cfg_get_int(_sg_cfg_set,name);
796 double sg_cfg_get_double(const char* name)
798 return xbt_cfg_get_double(_sg_cfg_set,name);
800 char* sg_cfg_get_string(const char* name)
802 return xbt_cfg_get_string(_sg_cfg_set,name);
804 void sg_cfg_get_peer(const char *name, char **peer, int *port)
806 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
808 xbt_dynar_t sg_cfg_get_dynar(const char* name)
810 return xbt_cfg_get_dynar(_sg_cfg_set,name);