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 /* surf_config: configuration infrastructure for the simulation world */
10 #include "xbt/config.h"
13 #include "surf/surf_private.h"
14 #include "surf/surf_routing.h" /* COORD_HOST_LEVEL and COORD_ASR_LEVEL */
15 #include "simgrid/simix.h"
16 #include "mc/mc.h" /* configuration callbacks of model-checking */
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf,
19 "About the configuration of surf (and the rest of the simulation)");
21 xbt_cfg_t _surf_cfg_set = NULL;
23 /* Parse the command line, looking for options */
24 static void surf_config_cmd_line(int *argc, char **argv)
30 for (j = i = 1; i < *argc; i++) {
31 if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
32 opt = strchr(argv[i], '=');
35 xbt_cfg_set_parse(_surf_cfg_set, opt);
36 XBT_DEBUG("Did apply '%s' as config setting", opt);
37 } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
39 ("Description of the configuration accepted by this simulator:\n");
40 xbt_cfg_help(_surf_cfg_set);
43 "Each of these configurations can be used by adding\n"
44 " --cfg=<option name>:<option value>\n"
45 "to the command line.\n"
46 "You can also use --help-models to see the details of all models known by this simulator.\n"
49 "You can also use --help-tracing to see the details of all tracing options known by this simulator.\n"
52 "You can also use --help-logs and --help-log-categories to see the details of logging output.\n"
56 } else if (!strcmp(argv[i], "--help-models")) {
59 model_help("workstation", surf_workstation_model_description);
61 model_help("CPU", surf_cpu_model_description);
63 model_help("network", surf_network_model_description);
64 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
65 for (k = 0; surf_optimization_mode_description[k].name; k++)
67 surf_optimization_mode_description[k].name,
68 surf_optimization_mode_description[k].description);
69 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
72 } else if (!strcmp(argv[i], "--help-tracing")) {
89 int _surf_init_status = 0; /* 0: beginning of time (config cannot be changed yet);
90 1: initialized: cfg_set created (config can now be changed);
91 2: configured: command line parsed and config part of platform file was integrated also, platform construction ongoing or done.
92 (Config cannot be changed anymore!) */
94 /* callback of the workstation/model variable */
95 static void _surf_cfg_cb__workstation_model(const char *name, int pos)
99 xbt_assert(_surf_init_status == 1,
100 "Cannot change the model after the initialization");
102 val = xbt_cfg_get_string(_surf_cfg_set, name);
104 if (!strcmp(val, "help")) {
105 model_help("workstation", surf_workstation_model_description);
109 /* Make sure that the model exists */
110 find_model_description(surf_workstation_model_description, val);
113 /* callback of the cpu/model variable */
114 static void _surf_cfg_cb__cpu_model(const char *name, int pos)
118 xbt_assert(_surf_init_status == 1,
119 "Cannot change the model after the initialization");
121 val = xbt_cfg_get_string(_surf_cfg_set, name);
123 if (!strcmp(val, "help")) {
124 model_help("CPU", surf_cpu_model_description);
128 /* New Module missing */
129 find_model_description(surf_cpu_model_description, val);
132 /* callback of the cpu/model variable */
133 static void _surf_cfg_cb__optimization_mode(const char *name, int pos)
137 xbt_assert(_surf_init_status == 1,
138 "Cannot change the model after the initialization");
140 val = xbt_cfg_get_string(_surf_cfg_set, name);
142 if (!strcmp(val, "help")) {
143 model_help("optimization", surf_optimization_mode_description);
147 /* New Module missing */
148 find_model_description(surf_optimization_mode_description, val);
151 /* callback of the cpu/model variable */
152 static void _surf_cfg_cb__storage_mode(const char *name, int pos)
156 xbt_assert(_surf_init_status == 1,
157 "Cannot change the model after the initialization");
159 val = xbt_cfg_get_string(_surf_cfg_set, name);
161 if (!strcmp(val, "help")) {
162 model_help("storage", surf_storage_model_description);
166 /* New Module missing */
167 find_model_description(surf_storage_model_description, val);
170 /* callback of the workstation_model variable */
171 static void _surf_cfg_cb__network_model(const char *name, int pos)
175 xbt_assert(_surf_init_status == 1,
176 "Cannot change the model after the initialization");
178 val = xbt_cfg_get_string(_surf_cfg_set, name);
180 if (!strcmp(val, "help")) {
181 model_help("network", surf_network_model_description);
185 /* New Module missing */
186 find_model_description(surf_network_model_description, val);
190 /* callbacks of the network models values */
191 static void _surf_cfg_cb__tcp_gamma(const char *name, int pos)
193 sg_tcp_gamma = xbt_cfg_get_double(_surf_cfg_set, name);
196 static void _surf_cfg_cb__maxmin_precision(const char* name, int pos)
198 sg_maxmin_precision = xbt_cfg_get_double(_surf_cfg_set, name);
201 static void _surf_cfg_cb__sender_gap(const char* name, int pos)
203 sg_sender_gap = xbt_cfg_get_double(_surf_cfg_set, name);
206 static void _surf_cfg_cb__latency_factor(const char *name, int pos)
208 sg_latency_factor = xbt_cfg_get_double(_surf_cfg_set, name);
211 static void _surf_cfg_cb__bandwidth_factor(const char *name, int pos)
213 sg_bandwidth_factor = xbt_cfg_get_double(_surf_cfg_set, name);
216 static void _surf_cfg_cb__weight_S(const char *name, int pos)
218 sg_weight_S_parameter = xbt_cfg_get_double(_surf_cfg_set, name);
221 /* callback of the inclusion path */
222 static void _surf_cfg_cb__surf_path(const char *name, int pos)
224 char *path = xbt_cfg_get_string_at(_surf_cfg_set, name, pos);
225 xbt_dynar_push(surf_path, &path);
228 /* callback to decide if we want to use the model-checking */
229 #include "xbt_modinter.h"
230 extern int _surf_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
232 static void _surf_cfg_cb_model_check(const char *name, int pos)
234 _surf_do_model_check = xbt_cfg_get_int(_surf_cfg_set, name);
237 if (_surf_do_model_check) {
238 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");
243 extern int _surf_do_verbose_exit;
245 static void _surf_cfg_cb_verbose_exit(const char *name, int pos)
247 _surf_do_verbose_exit = xbt_cfg_get_int(_surf_cfg_set, name);
251 static void _surf_cfg_cb_context_factory(const char *name, int pos) {
252 smx_context_factory_name = xbt_cfg_get_string(_surf_cfg_set, name);
255 static void _surf_cfg_cb_context_stack_size(const char *name, int pos)
257 smx_context_stack_size = xbt_cfg_get_int(_surf_cfg_set, name) * 1024;
260 static void _surf_cfg_cb_contexts_nthreads(const char *name, int pos)
262 SIMIX_context_set_nthreads(xbt_cfg_get_int(_surf_cfg_set, name));
265 static void _surf_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
267 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_surf_cfg_set, name));
270 static void _surf_cfg_cb_contexts_parallel_mode(const char *name, int pos)
272 const char* mode_name = xbt_cfg_get_string(_surf_cfg_set, name);
273 if (!strcmp(mode_name, "posix")) {
274 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
276 else if (!strcmp(mode_name, "futex")) {
277 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
279 else if (!strcmp(mode_name, "busy_wait")) {
280 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
283 xbt_die("Command line setting of the parallel synchronization mode should "
284 "be one of \"posix\", \"futex\" or \"busy_wait\"");
288 static void _surf_cfg_cb_surf_nthreads(const char *name, int pos)
290 surf_set_nthreads(xbt_cfg_get_int(_surf_cfg_set, name));
293 static void _surf_cfg_cb__surf_network_coordinates(const char *name,
296 char *val = xbt_cfg_get_string(_surf_cfg_set, name);
297 if (!strcmp(val, "yes")) {
298 if (!COORD_HOST_LEVEL) {
299 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
300 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
302 } else if (!strcmp(val, "no")) {
303 if (COORD_HOST_LEVEL)
304 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
306 xbt_die("Command line setting of whether to use coordinates must be either \"yes\" or \"no\"");
310 static void _surf_cfg_cb__surf_network_crosstraffic(const char *name,
313 sg_network_crosstraffic = xbt_cfg_get_int(_surf_cfg_set, name);
317 static void _surf_cfg_cb__gtnets_jitter(const char *name, int pos)
319 sg_gtnets_jitter = xbt_cfg_get_double(_surf_cfg_set, name);
322 static void _surf_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
324 sg_gtnets_jitter_seed = xbt_cfg_get_int(_surf_cfg_set, name);
328 /* create the config set, register what should be and parse the command line*/
329 void surf_config_init(int *argc, char **argv)
331 char *description = xbt_malloc(1024), *p = description;
333 double double_default_value;
334 int default_value_int;
337 /* Create the configuration support */
338 if (_surf_init_status == 0) { /* Only create stuff if not already inited */
340 "The model to use for the CPU. Possible values: ");
342 while (*(++p) != '\0');
343 for (i = 0; surf_cpu_model_description[i].name; i++)
344 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
345 surf_cpu_model_description[i].name);
347 ".\n (use 'help' as a value to see the long description of each model)");
348 default_value = xbt_strdup("Cas01");
349 xbt_cfg_register(&_surf_cfg_set, "cpu/model", description, xbt_cfgelm_string,
350 &default_value, 1, 1, &_surf_cfg_cb__cpu_model, NULL);
353 "The optimization modes to use for the CPU. Possible values: ");
355 while (*(++p) != '\0');
356 for (i = 0; surf_optimization_mode_description[i].name; i++)
357 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
358 surf_optimization_mode_description[i].name);
360 ".\n (use 'help' as a value to see the long description of each optimization mode)");
361 default_value = xbt_strdup("Lazy");
362 xbt_cfg_register(&_surf_cfg_set, "cpu/optim", description, xbt_cfgelm_string,
363 &default_value, 1, 1, &_surf_cfg_cb__optimization_mode, NULL);
366 "The model to use for the storage. Possible values: ");
368 while (*(++p) != '\0');
369 for (i = 0; surf_storage_model_description[i].name; i++)
370 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
371 surf_storage_model_description[i].name);
373 ".\n (use 'help' as a value to see the long description of each model)");
374 default_value = xbt_strdup("default");
375 xbt_cfg_register(&_surf_cfg_set, "storage/model", description, xbt_cfgelm_string,
376 &default_value, 1, 1, &_surf_cfg_cb__storage_mode,
379 /* ********************************************************************* */
380 /* TUTORIAL: New model */
382 "The model to use for the New model. Possible values: ");
384 while (*(++p) != '\0');
385 for (i = 0; surf_new_model_description[i].name; i++)
386 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
387 surf_new_model_description[i].name);
389 ".\n (use 'help' as a value to see the long description of each model)");
390 default_value = xbt_strdup("default");
391 xbt_cfg_register(&_surf_cfg_set, "new_model/model", description, xbt_cfgelm_string,
392 &default_value, 1, 1, &_surf_cfg_cb__storage_mode,
394 /* ********************************************************************* */
397 "The model to use for the network. Possible values: ");
399 while (*(++p) != '\0');
400 for (i = 0; surf_network_model_description[i].name; i++)
401 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
402 surf_network_model_description[i].name);
404 ".\n (use 'help' as a value to see the long description of each model)");
405 default_value = xbt_strdup("LV08");
406 xbt_cfg_register(&_surf_cfg_set, "network/model", description, xbt_cfgelm_string,
407 &default_value, 1, 1, &_surf_cfg_cb__network_model,
411 "The optimization modes to use for the network. Possible values: ");
413 while (*(++p) != '\0');
414 for (i = 0; surf_optimization_mode_description[i].name; i++)
415 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
416 surf_optimization_mode_description[i].name);
418 ".\n (use 'help' as a value to see the long description of each optimization mode)");
419 default_value = xbt_strdup("Lazy");
420 xbt_cfg_register(&_surf_cfg_set, "network/optim", description, xbt_cfgelm_string,
421 &default_value, 1, 1, &_surf_cfg_cb__optimization_mode, NULL);
424 "The model to use for the workstation. Possible values: ");
426 while (*(++p) != '\0');
427 for (i = 0; surf_workstation_model_description[i].name; i++)
428 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
429 surf_workstation_model_description[i].name);
431 ".\n (use 'help' as a value to see the long description of each model)");
432 default_value = xbt_strdup("default");
433 xbt_cfg_register(&_surf_cfg_set, "workstation/model", description, xbt_cfgelm_string,
434 &default_value, 1, 1,
435 &_surf_cfg_cb__workstation_model, NULL);
437 xbt_free(description);
439 xbt_cfg_register(&_surf_cfg_set, "network/TCP_gamma",
440 "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)",
441 xbt_cfgelm_double, NULL, 1, 1,
442 _surf_cfg_cb__tcp_gamma, NULL);
443 xbt_cfg_setdefault_double(_surf_cfg_set, "network/TCP_gamma", 20000.0);
445 xbt_cfg_register(&_surf_cfg_set, "maxmin/precision",
446 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
447 xbt_cfgelm_double, NULL, 1, 1, _surf_cfg_cb__maxmin_precision, NULL);
448 xbt_cfg_setdefault_double(_surf_cfg_set, "maxmin/precision", 0.00001); // FIXME use setdefault everywhere here!
450 /* The parameters of network models */
452 double_default_value = 0.0;
453 xbt_cfg_register(&_surf_cfg_set, "network/sender_gap",
454 "Minimum gap between two overlapping sends",
455 xbt_cfgelm_double, &double_default_value, 1, 1,
456 _surf_cfg_cb__sender_gap, NULL);
458 double_default_value = 1.0;
459 xbt_cfg_register(&_surf_cfg_set, "network/latency_factor",
460 "Correction factor to apply to the provided latency (default value set by network model)",
461 xbt_cfgelm_double, &double_default_value, 1, 1,
462 _surf_cfg_cb__latency_factor, NULL);
463 double_default_value = 1.0;
464 xbt_cfg_register(&_surf_cfg_set, "network/bandwidth_factor",
465 "Correction factor to apply to the provided bandwidth (default value set by network model)",
466 xbt_cfgelm_double, &double_default_value, 1, 1,
467 _surf_cfg_cb__bandwidth_factor, NULL);
468 double_default_value = 0.0;
469 xbt_cfg_register(&_surf_cfg_set, "network/weight_S",
470 "Correction factor to apply to the weight of competing streams(default value set by network model)",
471 xbt_cfgelm_double, &double_default_value, 1, 1,
472 _surf_cfg_cb__weight_S, NULL);
475 xbt_cfg_register(&_surf_cfg_set, "path",
476 "Lookup path for inclusions in platform and deployment XML files",
477 xbt_cfgelm_string, NULL, 0, 0,
478 _surf_cfg_cb__surf_path, NULL);
480 default_value_int = 0;
481 xbt_cfg_register(&_surf_cfg_set, "cpu/maxmin_selective_update",
482 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
483 xbt_cfgelm_int, &default_value_int, 0, 1,
485 default_value_int = 0;
486 xbt_cfg_register(&_surf_cfg_set, "network/maxmin_selective_update",
487 "Update the constraint set propagating recursively to others constraints (1 by default when optim is set to lazy)",
488 xbt_cfgelm_int, &default_value_int, 0, 1,
492 /* do model-checking */
493 default_value_int = 0;
494 xbt_cfg_register(&_surf_cfg_set, "model-check",
495 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
496 xbt_cfgelm_int, &default_value_int, 0, 1,
497 _surf_cfg_cb_model_check, NULL);
499 /* do stateful model-checking */
500 default_value_int = 0;
501 xbt_cfg_register(&_surf_cfg_set, "model-check/checkpoint",
502 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
503 "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.",
504 xbt_cfgelm_int, &default_value_int, 0, 1,
505 _mc_cfg_cb_checkpoint, NULL);
507 /* do liveness model-checking */
508 default_value = xbt_strdup("");
509 xbt_cfg_register(&_surf_cfg_set, "model-check/property",
510 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
511 xbt_cfgelm_string, &default_value, 0, 1,
512 _mc_cfg_cb_property, NULL);
514 /* Specify the kind of model-checking reduction */
515 default_value = xbt_strdup("unset");
516 xbt_cfg_register(&_surf_cfg_set, "model-check/reduction",
517 "Specify the kind of exploration reduction (either none or DPOR)",
518 xbt_cfgelm_string, &default_value, 0, 1,
519 _mc_cfg_cb_reduce, NULL);
521 /* Enable/disable timeout for wait requests with model-checking */
522 default_value_int = 1;
523 xbt_cfg_register(&_surf_cfg_set, "model-check/timeout",
524 "Enable/Disable timeout for wait requests",
525 xbt_cfgelm_int, &default_value, 0, 1,
526 _mc_cfg_cb_timeout, NULL);
528 /* Set max depth exploration */
529 default_value_int = 1000;
530 xbt_cfg_register(&_surf_cfg_set, "model-check/max_depth",
531 "Specify the max depth of exploration",
532 xbt_cfgelm_int, &default_value, 0, 1,
533 _mc_cfg_cb_max_depth, NULL);
536 /* do verbose-exit */
537 default_value_int = 1;
538 xbt_cfg_register(&_surf_cfg_set, "verbose-exit",
539 "Activate the \"do nothing\" mode in Ctrl-C",
540 xbt_cfgelm_int, &default_value_int, 0, 1,
541 _surf_cfg_cb_verbose_exit, NULL);
544 /* context factory */
545 default_value = xbt_strdup("ucontext");
546 xbt_cfg_register(&_surf_cfg_set, "contexts/factory",
547 "Context factory to use in SIMIX (ucontext, thread or raw)",
548 xbt_cfgelm_string, &default_value, 1, 1, _surf_cfg_cb_context_factory, NULL);
550 /* stack size of contexts in Ko */
551 default_value_int = 128;
552 xbt_cfg_register(&_surf_cfg_set, "contexts/stack_size",
553 "Stack size of contexts in Kib (ucontext or raw only)",
554 xbt_cfgelm_int, &default_value_int, 1, 1,
555 _surf_cfg_cb_context_stack_size, NULL);
557 /* number of parallel threads for user processes */
558 default_value_int = 1;
559 xbt_cfg_register(&_surf_cfg_set, "contexts/nthreads",
560 "Number of parallel threads used to execute user contexts",
561 xbt_cfgelm_int, &default_value_int, 1, 1,
562 _surf_cfg_cb_contexts_nthreads, NULL);
564 /* minimal number of user contexts to be run in parallel */
565 default_value_int = 2;
566 xbt_cfg_register(&_surf_cfg_set, "contexts/parallel_threshold",
567 "Minimal number of user contexts to be run in parallel (raw contexts only)",
568 xbt_cfgelm_int, &default_value_int, 1, 1,
569 _surf_cfg_cb_contexts_parallel_threshold, NULL);
571 /* synchronization mode for parallel user contexts */
573 default_value = xbt_strdup("futex");
574 #else //No futex on mac and posix is unimplememted yet
575 default_value = xbt_strdup("busy_wait");
577 xbt_cfg_register(&_surf_cfg_set, "contexts/synchro",
578 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
579 xbt_cfgelm_string, &default_value, 1, 1,
580 _surf_cfg_cb_contexts_parallel_mode, NULL);
582 /* number of parallel threads for Surf */
583 default_value_int = surf_get_nthreads();
584 xbt_cfg_register(&_surf_cfg_set, "surf/nthreads",
585 "Number of parallel threads used to update Surf models",
586 xbt_cfgelm_int, &default_value_int, 1, 1,
587 _surf_cfg_cb_surf_nthreads, NULL);
589 default_value = xbt_strdup("no");
590 xbt_cfg_register(&_surf_cfg_set, "network/coordinates",
591 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
592 xbt_cfgelm_string, &default_value, 1, 1,
593 _surf_cfg_cb__surf_network_coordinates, NULL);
594 xbt_cfg_setdefault_string(_surf_cfg_set, "network/coordinates", default_value);
596 default_value_int = 0;
597 xbt_cfg_register(&_surf_cfg_set, "network/crosstraffic",
598 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
599 xbt_cfgelm_int, &default_value_int, 0, 1,
600 _surf_cfg_cb__surf_network_crosstraffic, NULL);
601 xbt_cfg_setdefault_int(_surf_cfg_set, "network/crosstraffic", default_value_int);
604 xbt_cfg_register(&_surf_cfg_set, "gtnets/jitter",
605 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
606 xbt_cfgelm_double, NULL, 1, 1,
607 _surf_cfg_cb__gtnets_jitter, NULL);
608 xbt_cfg_setdefault_double(_surf_cfg_set, "gtnets/jitter", 0.0);
610 default_value_int = 10;
611 xbt_cfg_register(&_surf_cfg_set, "gtnets/jitter_seed",
612 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
613 xbt_cfgelm_int, &default_value_int, 0, 1,
614 _surf_cfg_cb__gtnets_jitter_seed, NULL);
617 xbt_cfg_register(&_surf_cfg_set, "ns3/TcpModel",
618 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
619 xbt_cfgelm_string, NULL, 1, 1,
621 xbt_cfg_setdefault_string(_surf_cfg_set, "ns3/TcpModel", "default");
625 double default_reference_speed = 20000.0;
626 xbt_cfg_register(&_surf_cfg_set, "smpi/running_power",
627 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
628 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
631 int default_display_timing = 0;
632 xbt_cfg_register(&_surf_cfg_set, "smpi/display_timing",
633 "Boolean indicating whether we should display the timing after simulation.",
634 xbt_cfgelm_int, &default_display_timing, 1, 1, NULL,
637 double default_threshold = 1e-6;
638 xbt_cfg_register(&_surf_cfg_set, "smpi/cpu_threshold",
639 "Minimal computation time (in seconds) not discarded.",
640 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
643 int default_small_messages_threshold = 0;
644 xbt_cfg_register(&_surf_cfg_set, "smpi/async_small_thres",
645 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
646 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
649 //For smpi/bw_factor and smpi/lat_factor
650 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
651 //test is if( size >= thresholdN ) return valueN;
652 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
653 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
654 xbt_cfg_register(&_surf_cfg_set, "smpi/bw_factor",
655 "Bandwidth factors for smpi.",
656 xbt_cfgelm_string, NULL, 1, 1, NULL,
658 xbt_cfg_setdefault_string(_surf_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");
660 xbt_cfg_register(&_surf_cfg_set, "smpi/lat_factor",
661 "Latency factors for smpi.",
662 xbt_cfgelm_string, NULL, 1, 1, NULL,
664 xbt_cfg_setdefault_string(_surf_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");
669 /* retrieves the current directory of the current process */
670 const char *initial_path = __surf_get_initial_path();
671 xbt_assert((initial_path),
672 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
674 surf_path = xbt_dynar_new(sizeof(char *), NULL);
675 xbt_cfg_setdefault_string(_surf_cfg_set, "path", initial_path);
678 _surf_init_status = 1;
680 surf_config_cmd_line(argc, argv);
683 XBT_WARN("Call to surf_config_init() after initialization ignored");
687 void surf_config_finalize(void)
689 if (!_surf_init_status)
690 return; /* Not initialized yet. Nothing to do */
692 xbt_cfg_free(&_surf_cfg_set);
693 _surf_init_status = 0;
696 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
697 void surf_config_models_setup()
699 char *workstation_model_name;
700 int workstation_id = -1;
701 char *network_model_name = NULL;
702 char *cpu_model_name = NULL;
704 char *storage_model_name = NULL;
706 workstation_model_name =
707 xbt_cfg_get_string(_surf_cfg_set, "workstation/model");
708 network_model_name = xbt_cfg_get_string(_surf_cfg_set, "network/model");
709 cpu_model_name = xbt_cfg_get_string(_surf_cfg_set, "cpu/model");
710 storage_model_name = xbt_cfg_get_string(_surf_cfg_set, "storage/model");
712 /* Check whether we use a net/cpu model differing from the default ones, in which case
713 * we should switch to the "compound" workstation model to correctly dispatch stuff to
714 * the right net/cpu models.
717 if((!xbt_cfg_is_default_value(_surf_cfg_set, "network/model") ||
718 !xbt_cfg_is_default_value(_surf_cfg_set, "cpu/model")) &&
719 xbt_cfg_is_default_value(_surf_cfg_set, "workstation/model"))
721 const char *val = "compound";
723 ("Switching workstation model to compound since you changed the network and/or cpu model(s)");
724 xbt_cfg_set_string(_surf_cfg_set, "workstation/model", val);
725 workstation_model_name = (char *) "compound";
728 XBT_DEBUG("Workstation model: %s", workstation_model_name);
730 find_model_description(surf_workstation_model_description,
731 workstation_model_name);
732 if (!strcmp(workstation_model_name, "compound")) {
736 xbt_assert(cpu_model_name,
737 "Set a cpu model to use with the 'compound' workstation model");
739 xbt_assert(network_model_name,
740 "Set a network model to use with the 'compound' workstation model");
743 find_model_description(surf_network_model_description,
746 find_model_description(surf_cpu_model_description, cpu_model_name);
748 surf_cpu_model_description[cpu_id].model_init_preparse();
749 surf_network_model_description[network_id].model_init_preparse();
752 XBT_DEBUG("Call workstation_model_init");
753 surf_workstation_model_description[workstation_id].model_init_preparse();
755 XBT_DEBUG("Call storage_model_init");
756 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
757 surf_storage_model_description[storage_id].model_init_preparse();
759 /* ********************************************************************* */
760 /* TUTORIAL: New model */
761 int new_model_id = -1;
762 char *new_model_name = NULL;
763 new_model_name = xbt_cfg_get_string(_surf_cfg_set, "new_model/model");
764 XBT_DEBUG("Call new model_init");
765 new_model_id = find_model_description(surf_new_model_description, new_model_name);
766 surf_new_model_description[new_model_id].model_init_preparse();
767 /* ********************************************************************* */