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"
24 #include "surf/vm_workstation_private.h"
26 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf,
27 "About the configuration of simgrid");
29 xbt_cfg_t _sg_cfg_set = NULL;
31 int _sg_init_status = 0; /* 0: beginning of time (config cannot be changed yet);
32 1: initialized: cfg_set created (config can now be changed);
33 2: configured: command line parsed and config part of platform file was integrated also, platform construction ongoing or done.
34 (Config cannot be changed anymore!) */
36 /* Parse the command line, looking for options */
37 static void sg_config_cmd_line(int *argc, char **argv)
43 for (j = i = 1; i < *argc; i++) {
44 if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
45 opt = strchr(argv[i], '=');
48 xbt_cfg_set_parse(_sg_cfg_set, opt);
49 XBT_DEBUG("Did apply '%s' as config setting", opt);
50 } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
52 ("Description of the configuration accepted by this simulator:\n");
53 xbt_cfg_help(_sg_cfg_set);
56 "Each of these configurations can be used by adding\n"
57 " --cfg=<option name>:<option value>\n"
58 "to the command line.\n"
59 "You can also use --help-models to see the details of all models known by this simulator.\n"
62 "You can also use --help-tracing to see the details of all tracing options known by this simulator.\n"
65 "You can also use --help-logs and --help-log-categories to see the details of logging output.\n"
69 } else if (!strcmp(argv[i], "--help-models")) {
72 model_help("workstation", surf_workstation_model_description);
74 model_help("CPU", surf_cpu_model_description);
76 model_help("network", surf_network_model_description);
77 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
78 for (k = 0; surf_optimization_mode_description[k].name; k++)
80 surf_optimization_mode_description[k].name,
81 surf_optimization_mode_description[k].description);
82 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
85 } else if (!strcmp(argv[i], "--help-tracing")) {
98 _sg_init_status=1; // get everything cleanly cleaned on exit
103 /* callback of the workstation/model variable */
104 static void _sg_cfg_cb__workstation_model(const char *name, int pos)
108 xbt_assert(_sg_init_status == 1,
109 "Cannot change the model after the initialization");
111 val = xbt_cfg_get_string(_sg_cfg_set, name);
113 if (!strcmp(val, "help")) {
114 model_help("workstation", surf_workstation_model_description);
118 /* Make sure that the model exists */
119 find_model_description(surf_workstation_model_description, val);
122 /* callback of the cpu/model variable */
123 static void _sg_cfg_cb__cpu_model(const char *name, int pos)
127 xbt_assert(_sg_init_status == 1,
128 "Cannot change the model after the initialization");
130 val = xbt_cfg_get_string(_sg_cfg_set, name);
132 if (!strcmp(val, "help")) {
133 model_help("CPU", surf_cpu_model_description);
137 /* New Module missing */
138 find_model_description(surf_cpu_model_description, val);
141 /* callback of the cpu/model variable */
142 static void _sg_cfg_cb__optimization_mode(const char *name, int pos)
146 xbt_assert(_sg_init_status == 1,
147 "Cannot change the model after the initialization");
149 val = xbt_cfg_get_string(_sg_cfg_set, name);
151 if (!strcmp(val, "help")) {
152 model_help("optimization", surf_optimization_mode_description);
156 /* New Module missing */
157 find_model_description(surf_optimization_mode_description, val);
160 /* callback of the cpu/model variable */
161 static void _sg_cfg_cb__storage_mode(const char *name, int pos)
165 xbt_assert(_sg_init_status == 1,
166 "Cannot change the model after the initialization");
168 val = xbt_cfg_get_string(_sg_cfg_set, name);
170 if (!strcmp(val, "help")) {
171 model_help("storage", surf_storage_model_description);
175 /* New Module missing */
176 find_model_description(surf_storage_model_description, val);
179 /* callback of the workstation_model variable */
180 static void _sg_cfg_cb__network_model(const char *name, int pos)
184 xbt_assert(_sg_init_status == 1,
185 "Cannot change the model after the initialization");
187 val = xbt_cfg_get_string(_sg_cfg_set, name);
189 if (!strcmp(val, "help")) {
190 model_help("network", surf_network_model_description);
194 /* New Module missing */
195 find_model_description(surf_network_model_description, val);
199 /* callbacks of the network models values */
200 static void _sg_cfg_cb__tcp_gamma(const char *name, int pos)
202 sg_tcp_gamma = xbt_cfg_get_double(_sg_cfg_set, name);
205 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
207 sg_maxmin_precision = xbt_cfg_get_double(_sg_cfg_set, name);
210 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
212 sg_sender_gap = xbt_cfg_get_double(_sg_cfg_set, name);
215 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
217 sg_latency_factor = xbt_cfg_get_double(_sg_cfg_set, name);
220 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
222 sg_bandwidth_factor = xbt_cfg_get_double(_sg_cfg_set, name);
225 static void _sg_cfg_cb__weight_S(const char *name, int pos)
227 sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
230 /* callback of the inclusion path */
231 static void _sg_cfg_cb__surf_path(const char *name, int pos)
233 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
234 xbt_dynar_push(surf_path, &path);
237 /* callback to decide if we want to use the model-checking */
238 #include "xbt_modinter.h"
240 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
243 static void _sg_cfg_cb_model_check(const char *name, int pos)
246 _sg_do_model_check = xbt_cfg_get_int(_sg_cfg_set, name);
248 if (xbt_cfg_get_int(_sg_cfg_set, name)) {
249 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");
254 extern int _sg_do_verbose_exit;
256 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
258 _sg_do_verbose_exit = xbt_cfg_get_int(_sg_cfg_set, name);
262 static void _sg_cfg_cb_context_factory(const char *name, int pos) {
263 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
266 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
268 smx_context_stack_size_was_set = 1;
269 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
272 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
274 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
277 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
279 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
282 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
284 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
285 if (!strcmp(mode_name, "posix")) {
286 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
288 else if (!strcmp(mode_name, "futex")) {
289 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
291 else if (!strcmp(mode_name, "busy_wait")) {
292 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
295 xbt_die("Command line setting of the parallel synchronization mode should "
296 "be one of \"posix\", \"futex\" or \"busy_wait\"");
300 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
303 char *val = xbt_cfg_get_string(_sg_cfg_set, name);
304 if (!strcmp(val, "yes")) {
305 if (!COORD_HOST_LEVEL) {
306 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
307 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
309 } else if (!strcmp(val, "no")) {
310 if (COORD_HOST_LEVEL)
311 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
313 xbt_die("Command line setting of whether to use coordinates must be either \"yes\" or \"no\"");
317 static void _sg_cfg_cb_surf_nthreads(const char *name, int pos)
319 surf_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
322 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
325 sg_network_crosstraffic = xbt_cfg_get_int(_sg_cfg_set, name);
329 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
331 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
334 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
336 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
340 /* create the config set, register what should be and parse the command line*/
341 void sg_config_init(int *argc, char **argv)
343 char *description = xbt_malloc(1024), *p = description;
345 double double_default_value;
346 int default_value_int;
349 /* Create the configuration support */
350 if (_sg_init_status == 0) { /* Only create stuff if not already inited */
352 "The model to use for the CPU. Possible values: ");
354 while (*(++p) != '\0');
355 for (i = 0; surf_cpu_model_description[i].name; i++)
356 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
357 surf_cpu_model_description[i].name);
359 ".\n (use 'help' as a value to see the long description of each model)");
360 default_value = xbt_strdup("Cas01");
361 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string,
362 &default_value, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
365 "The optimization modes to use for the CPU. Possible values: ");
367 while (*(++p) != '\0');
368 for (i = 0; surf_optimization_mode_description[i].name; i++)
369 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
370 surf_optimization_mode_description[i].name);
372 ".\n (use 'help' as a value to see the long description of each optimization mode)");
373 default_value = xbt_strdup("Lazy");
374 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description, xbt_cfgelm_string,
375 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
378 "The model to use for the storage. Possible values: ");
380 while (*(++p) != '\0');
381 for (i = 0; surf_storage_model_description[i].name; i++)
382 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
383 surf_storage_model_description[i].name);
385 ".\n (use 'help' as a value to see the long description of each model)");
386 default_value = xbt_strdup("default");
387 xbt_cfg_register(&_sg_cfg_set, "storage/model", description, xbt_cfgelm_string,
388 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
391 /* ********************************************************************* */
392 /* TUTORIAL: New model */
394 "The model to use for the New model. Possible values: ");
396 while (*(++p) != '\0');
397 for (i = 0; surf_new_model_description[i].name; i++)
398 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
399 surf_new_model_description[i].name);
401 ".\n (use 'help' as a value to see the long description of each model)");
402 default_value = xbt_strdup("default");
403 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description, xbt_cfgelm_string,
404 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
406 /* ********************************************************************* */
409 "The model to use for the network. Possible values: ");
411 while (*(++p) != '\0');
412 for (i = 0; surf_network_model_description[i].name; i++)
413 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
414 surf_network_model_description[i].name);
416 ".\n (use 'help' as a value to see the long description of each model)");
417 default_value = xbt_strdup("LV08");
418 xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string,
419 &default_value, 1, 1, &_sg_cfg_cb__network_model,
423 "The optimization modes to use for the network. Possible values: ");
425 while (*(++p) != '\0');
426 for (i = 0; surf_optimization_mode_description[i].name; i++)
427 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
428 surf_optimization_mode_description[i].name);
430 ".\n (use 'help' as a value to see the long description of each optimization mode)");
431 default_value = xbt_strdup("Lazy");
432 xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string,
433 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
436 "The model to use for the workstation. Possible values: ");
438 while (*(++p) != '\0');
439 for (i = 0; surf_workstation_model_description[i].name; i++)
440 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
441 surf_workstation_model_description[i].name);
443 ".\n (use 'help' as a value to see the long description of each model)");
444 default_value = xbt_strdup("default");
445 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description, xbt_cfgelm_string,
446 &default_value, 1, 1,
447 &_sg_cfg_cb__workstation_model, NULL);
449 xbt_free(description);
451 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
452 "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)",
453 xbt_cfgelm_double, NULL, 1, 1,
454 _sg_cfg_cb__tcp_gamma, NULL);
455 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
457 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
458 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
459 xbt_cfgelm_double, NULL, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
460 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
462 /* The parameters of network models */
464 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
465 "Minimum gap between two overlapping sends",
466 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
467 _sg_cfg_cb__sender_gap, NULL);
469 double_default_value = 1.0; // FIXME use setdefault everywhere here!
470 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
471 "Correction factor to apply to the provided latency (default value set by network model)",
472 xbt_cfgelm_double, &double_default_value, 1, 1,
473 _sg_cfg_cb__latency_factor, NULL);
474 double_default_value = 1.0;
475 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
476 "Correction factor to apply to the provided bandwidth (default value set by network model)",
477 xbt_cfgelm_double, &double_default_value, 1, 1,
478 _sg_cfg_cb__bandwidth_factor, NULL);
480 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
481 "Correction factor to apply to the weight of competing streams(default value set by network model)",
482 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
483 _sg_cfg_cb__weight_S, NULL);
486 xbt_cfg_register(&_sg_cfg_set, "path",
487 "Lookup path for inclusions in platform and deployment XML files",
488 xbt_cfgelm_string, NULL, 0, 0,
489 _sg_cfg_cb__surf_path, NULL);
491 default_value_int = 0;
492 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
493 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
494 xbt_cfgelm_int, &default_value_int, 0, 1,
496 default_value_int = 0;
497 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
498 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
499 xbt_cfgelm_int, &default_value_int, 0, 1,
503 /* do model-checking */
504 xbt_cfg_register(&_sg_cfg_set, "model-check",
505 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
506 xbt_cfgelm_int, NULL, 0, 1,
507 _sg_cfg_cb_model_check, NULL);
508 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check", 0);
510 /* do stateful model-checking */
511 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
512 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
513 "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.",
514 xbt_cfgelm_int, NULL, 0, 1,
515 _mc_cfg_cb_checkpoint, NULL);
516 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
518 /* do liveness model-checking */
519 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
520 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
521 xbt_cfgelm_string, NULL, 0, 1,
522 _mc_cfg_cb_property, NULL);
523 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
525 /* Specify the kind of model-checking reduction */
526 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
527 "Specify the kind of exploration reduction (either none or DPOR)",
528 xbt_cfgelm_string, NULL, 0, 1,
529 _mc_cfg_cb_reduce, NULL);
530 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
532 /* Enable/disable timeout for wait requests with model-checking */
533 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
534 "Enable/Disable timeout for wait requests",
535 xbt_cfgelm_int, NULL, 0, 1,
536 _mc_cfg_cb_timeout, NULL);
537 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/timeout", 0);
539 /* Set max depth exploration */
540 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
541 "Specify the max depth of exploration (default : 1000)",
542 xbt_cfgelm_int, NULL, 0, 1,
543 _mc_cfg_cb_max_depth, NULL);
544 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
546 /* Set number of visited state stored for state comparison reduction*/
547 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
548 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
549 xbt_cfgelm_int, NULL, 0, 1,
550 _mc_cfg_cb_visited, NULL);
551 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
554 /* do verbose-exit */
555 default_value_int = 1;
556 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
557 "Activate the \"do nothing\" mode in Ctrl-C",
558 xbt_cfgelm_int, &default_value_int, 0, 1,
559 _sg_cfg_cb_verbose_exit, NULL);
562 /* context factory */
563 default_value = xbt_strdup("ucontext");
564 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
565 "Context factory to use in SIMIX (ucontext, thread or raw)",
566 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
568 /* stack size of contexts in Ko */
569 default_value_int = 128;
570 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
571 "Stack size of contexts in Kib (ucontext or raw only)",
572 xbt_cfgelm_int, &default_value_int, 1, 1,
573 _sg_cfg_cb_context_stack_size, NULL);
575 /* number of parallel threads for user processes */
576 default_value_int = 1;
577 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
578 "Number of parallel threads used to execute user contexts",
579 xbt_cfgelm_int, &default_value_int, 1, 1,
580 _sg_cfg_cb_contexts_nthreads, NULL);
582 /* minimal number of user contexts to be run in parallel */
583 default_value_int = 2;
584 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
585 "Minimal number of user contexts to be run in parallel (raw contexts only)",
586 xbt_cfgelm_int, &default_value_int, 1, 1,
587 _sg_cfg_cb_contexts_parallel_threshold, NULL);
589 /* synchronization mode for parallel user contexts */
591 default_value = xbt_strdup("futex");
592 #else //No futex on mac and posix is unimplememted yet
593 default_value = xbt_strdup("busy_wait");
595 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
596 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
597 xbt_cfgelm_string, &default_value, 1, 1,
598 _sg_cfg_cb_contexts_parallel_mode, NULL);
600 /* number of parallel threads for Surf */
601 default_value_int = surf_get_nthreads();
602 xbt_cfg_register(&_sg_cfg_set, "surf/nthreads",
603 "Number of parallel threads used to update Surf models",
604 xbt_cfgelm_int, &default_value_int, 1, 1,
605 _sg_cfg_cb_surf_nthreads, NULL);
607 default_value = xbt_strdup("no");
608 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
609 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
610 xbt_cfgelm_string, &default_value, 1, 1,
611 _sg_cfg_cb__surf_network_coordinates, NULL);
612 xbt_cfg_setdefault_string(_sg_cfg_set, "network/coordinates", default_value);
614 default_value_int = 0;
615 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
616 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
617 xbt_cfgelm_int, &default_value_int, 0, 1,
618 _sg_cfg_cb__surf_network_crosstraffic, NULL);
619 xbt_cfg_setdefault_int(_sg_cfg_set, "network/crosstraffic", default_value_int);
622 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
623 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
624 xbt_cfgelm_double, NULL, 1, 1,
625 _sg_cfg_cb__gtnets_jitter, NULL);
626 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
628 default_value_int = 10;
629 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
630 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
631 xbt_cfgelm_int, &default_value_int, 0, 1,
632 _sg_cfg_cb__gtnets_jitter_seed, NULL);
635 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
636 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
637 xbt_cfgelm_string, NULL, 1, 1,
639 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
643 double default_reference_speed = 20000.0;
644 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
645 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
646 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
649 int default_display_timing = 0;
650 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
651 "Boolean indicating whether we should display the timing after simulation.",
652 xbt_cfgelm_int, &default_display_timing, 1, 1, NULL,
655 double default_threshold = 1e-6;
656 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
657 "Minimal computation time (in seconds) not discarded.",
658 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
661 int default_small_messages_threshold = 0;
662 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
663 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
664 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
667 int default_send_is_detached_threshold = 65536;
668 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
669 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
670 xbt_cfgelm_int, &default_send_is_detached_threshold, 1, 1, NULL,
673 //For smpi/bw_factor and smpi/lat_factor
674 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
675 //test is if( size >= thresholdN ) return valueN;
676 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
677 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
678 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
679 "Bandwidth factors for smpi.",
680 xbt_cfgelm_string, NULL, 1, 1, NULL,
682 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");
684 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
685 "Latency factors for smpi.",
686 xbt_cfgelm_string, NULL, 1, 1, NULL,
688 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");
690 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
691 "Small messages timings (MPI_Send minimum time for small messages)",
692 xbt_cfgelm_string, NULL, 1, 1, NULL,
694 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
696 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
697 "Small messages timings (MPI_Isend minimum time for small messages)",
698 xbt_cfgelm_string, NULL, 1, 1, NULL,
700 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
702 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
703 "Small messages timings (MPI_Recv minimum time for small messages)",
704 xbt_cfgelm_string, NULL, 1, 1, NULL,
706 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
713 /* retrieves the current directory of the current process */
714 const char *initial_path = __surf_get_initial_path();
715 xbt_assert((initial_path),
716 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
718 surf_path = xbt_dynar_new(sizeof(char *), NULL);
719 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
724 sg_config_cmd_line(argc, argv);
726 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
729 XBT_WARN("Call to sg_config_init() after initialization ignored");
733 void sg_config_finalize(void)
735 if (!_sg_init_status)
736 return; /* Not initialized yet. Nothing to do */
738 xbt_cfg_free(&_sg_cfg_set);
742 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
743 void surf_config_models_setup()
745 char *workstation_model_name;
746 int workstation_id = -1;
747 char *network_model_name = NULL;
748 char *cpu_model_name = NULL;
750 char *storage_model_name = NULL;
752 workstation_model_name =
753 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
754 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
755 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
756 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
758 /* Check whether we use a net/cpu model differing from the default ones, in which case
759 * we should switch to the "compound" workstation model to correctly dispatch stuff to
760 * the right net/cpu models.
763 if((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
764 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
765 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model"))
767 const char *val = "compound";
769 ("Switching workstation model to compound since you changed the network and/or cpu model(s)");
770 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
771 workstation_model_name = (char *) "compound";
774 XBT_DEBUG("Workstation model: %s", workstation_model_name);
776 find_model_description(surf_workstation_model_description,
777 workstation_model_name);
778 if (!strcmp(workstation_model_name, "compound")) {
782 xbt_assert(cpu_model_name,
783 "Set a cpu model to use with the 'compound' workstation model");
785 xbt_assert(network_model_name,
786 "Set a network model to use with the 'compound' workstation model");
789 find_model_description(surf_network_model_description,
792 find_model_description(surf_cpu_model_description, cpu_model_name);
794 surf_cpu_model_description[cpu_id].model_init_preparse();
795 surf_network_model_description[network_id].model_init_preparse();
798 XBT_DEBUG("Call workstation_model_init");
799 surf_workstation_model_description[workstation_id].model_init_preparse();
801 XBT_DEBUG("Call vm_workstation_model_init");
802 surf_vm_workstation_model_init();
804 XBT_DEBUG("Call storage_model_init");
805 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
806 surf_storage_model_description[storage_id].model_init_preparse();
808 /* ********************************************************************* */
809 /* TUTORIAL: New model */
810 int new_model_id = -1;
811 char *new_model_name = NULL;
812 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
813 XBT_DEBUG("Call new model_init");
814 new_model_id = find_model_description(surf_new_model_description, new_model_name);
815 surf_new_model_description[new_model_id].model_init_preparse();
816 /* ********************************************************************* */
819 int sg_cfg_get_int(const char* name)
821 return xbt_cfg_get_int(_sg_cfg_set,name);
823 double sg_cfg_get_double(const char* name)
825 return xbt_cfg_get_double(_sg_cfg_set,name);
827 char* sg_cfg_get_string(const char* name)
829 return xbt_cfg_get_string(_sg_cfg_set,name);
831 void sg_cfg_get_peer(const char *name, char **peer, int *port)
833 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
835 xbt_dynar_t sg_cfg_get_dynar(const char* name)
837 return xbt_cfg_get_dynar(_sg_cfg_set,name);