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);
231 /* callback of the mpi collectives */
232 static void _sg_cfg_cb__coll(const char *category,
233 s_mpi_coll_description_t * table,
234 const char *name, int pos)
238 xbt_assert(_sg_init_status == 1,
239 "Cannot change the model after the initialization");
241 val = xbt_cfg_get_string(_sg_cfg_set, name);
243 if (!strcmp(val, "help")) {
244 coll_help(category, table);
248 /* New Module missing */
249 find_coll_description(table, val);
251 static void _sg_cfg_cb__coll_gather(const char *name, int pos){
252 _sg_cfg_cb__coll("gather", mpi_coll_gather_description, name, pos);
254 static void _sg_cfg_cb__coll_allgather(const char *name, int pos){
255 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
257 static void _sg_cfg_cb__coll_allgatherv(const char *name, int pos){
258 _sg_cfg_cb__coll("allgatherv", mpi_coll_allgatherv_description, name, pos);
260 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
262 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
264 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
266 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
268 static void _sg_cfg_cb__coll_alltoallv(const char *name, int pos)
270 _sg_cfg_cb__coll("alltoallv", mpi_coll_alltoallv_description, name, pos);
272 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
274 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
276 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
278 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
280 static void _sg_cfg_cb__coll_reduce_scatter(const char *name, int pos){
281 _sg_cfg_cb__coll("reduce_scatter", mpi_coll_reduce_scatter_description, name, pos);
283 static void _sg_cfg_cb__coll_scatter(const char *name, int pos){
284 _sg_cfg_cb__coll("scatter", mpi_coll_scatter_description, name, pos);
286 static void _sg_cfg_cb__coll_barrier(const char *name, int pos){
287 _sg_cfg_cb__coll("barrier", mpi_coll_barrier_description, name, pos);
291 /* callback of the inclusion path */
292 static void _sg_cfg_cb__surf_path(const char *name, int pos)
294 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
295 xbt_dynar_push(surf_path, &path);
298 /* callback to decide if we want to use the model-checking */
299 #include "xbt_modinter.h"
301 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
304 static void _sg_cfg_cb_model_check(const char *name, int pos)
307 _sg_do_model_check = xbt_cfg_get_boolean(_sg_cfg_set, name);
309 if (xbt_cfg_get_boolean(_sg_cfg_set, name)) {
310 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");
315 extern int _sg_do_verbose_exit;
317 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
319 _sg_do_verbose_exit = xbt_cfg_get_boolean(_sg_cfg_set, name);
323 static void _sg_cfg_cb_context_factory(const char *name, int pos) {
324 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
327 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
329 smx_context_stack_size_was_set = 1;
330 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
333 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
335 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
338 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
340 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
343 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
345 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
346 if (!strcmp(mode_name, "posix")) {
347 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
349 else if (!strcmp(mode_name, "futex")) {
350 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
352 else if (!strcmp(mode_name, "busy_wait")) {
353 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
356 xbt_die("Command line setting of the parallel synchronization mode should "
357 "be one of \"posix\", \"futex\" or \"busy_wait\"");
361 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
364 int val = xbt_cfg_get_boolean(_sg_cfg_set, name);
366 if (!COORD_HOST_LEVEL) {
367 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
368 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
371 if (COORD_HOST_LEVEL)
372 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
375 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
378 sg_network_crosstraffic = xbt_cfg_get_boolean(_sg_cfg_set, name);
382 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
384 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
387 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
389 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
393 /* create the config set, register what should be and parse the command line*/
394 void sg_config_init(int *argc, char **argv)
396 char *description = xbt_malloc(1024), *p = description;
398 double double_default_value;
399 int default_value_int;
402 /* Create the configuration support */
403 if (_sg_init_status == 0) { /* Only create stuff if not already inited */
405 "The model to use for the CPU. Possible values: ");
407 while (*(++p) != '\0');
408 for (i = 0; surf_cpu_model_description[i].name; i++)
409 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
410 surf_cpu_model_description[i].name);
412 ".\n (use 'help' as a value to see the long description of each model)");
413 default_value = xbt_strdup("Cas01");
414 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string,
415 &default_value, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
418 "The optimization modes to use for the CPU. Possible values: ");
420 while (*(++p) != '\0');
421 for (i = 0; surf_optimization_mode_description[i].name; i++)
422 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
423 surf_optimization_mode_description[i].name);
425 ".\n (use 'help' as a value to see the long description of each optimization mode)");
426 default_value = xbt_strdup("Lazy");
427 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description, xbt_cfgelm_string,
428 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
431 "The model to use for the storage. Possible values: ");
433 while (*(++p) != '\0');
434 for (i = 0; surf_storage_model_description[i].name; i++)
435 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
436 surf_storage_model_description[i].name);
438 ".\n (use 'help' as a value to see the long description of each model)");
439 default_value = xbt_strdup("default");
440 xbt_cfg_register(&_sg_cfg_set, "storage/model", description, xbt_cfgelm_string,
441 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
444 /* ********************************************************************* */
445 /* TUTORIAL: New model */
447 "The model to use for the New model. Possible values: ");
449 while (*(++p) != '\0');
450 for (i = 0; surf_new_model_description[i].name; i++)
451 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
452 surf_new_model_description[i].name);
454 ".\n (use 'help' as a value to see the long description of each model)");
455 default_value = xbt_strdup("default");
456 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description, xbt_cfgelm_string,
457 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
459 /* ********************************************************************* */
462 "The model to use for the network. Possible values: ");
464 while (*(++p) != '\0');
465 for (i = 0; surf_network_model_description[i].name; i++)
466 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
467 surf_network_model_description[i].name);
469 ".\n (use 'help' as a value to see the long description of each model)");
470 default_value = xbt_strdup("LV08");
471 xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string,
472 &default_value, 1, 1, &_sg_cfg_cb__network_model,
476 "The optimization modes to use for the network. Possible values: ");
478 while (*(++p) != '\0');
479 for (i = 0; surf_optimization_mode_description[i].name; i++)
480 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
481 surf_optimization_mode_description[i].name);
483 ".\n (use 'help' as a value to see the long description of each optimization mode)");
484 default_value = xbt_strdup("Lazy");
485 xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string,
486 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
489 "The model to use for the workstation. Possible values: ");
491 while (*(++p) != '\0');
492 for (i = 0; surf_workstation_model_description[i].name; i++)
493 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
494 surf_workstation_model_description[i].name);
496 ".\n (use 'help' as a value to see the long description of each model)");
497 default_value = xbt_strdup("default");
498 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description, xbt_cfgelm_string,
499 &default_value, 1, 1,
500 &_sg_cfg_cb__workstation_model, NULL);
502 xbt_free(description);
504 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
505 "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)",
506 xbt_cfgelm_double, NULL, 1, 1,
507 _sg_cfg_cb__tcp_gamma, NULL);
508 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
510 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
511 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
512 xbt_cfgelm_double, NULL, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
513 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
515 /* The parameters of network models */
517 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
518 "Minimum gap between two overlapping sends",
519 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
520 _sg_cfg_cb__sender_gap, NULL);
522 double_default_value = 1.0; // FIXME use setdefault everywhere here!
523 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
524 "Correction factor to apply to the provided latency (default value set by network model)",
525 xbt_cfgelm_double, &double_default_value, 1, 1,
526 _sg_cfg_cb__latency_factor, NULL);
527 double_default_value = 1.0;
528 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
529 "Correction factor to apply to the provided bandwidth (default value set by network model)",
530 xbt_cfgelm_double, &double_default_value, 1, 1,
531 _sg_cfg_cb__bandwidth_factor, NULL);
533 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
534 "Correction factor to apply to the weight of competing streams (default value set by network model)",
535 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
536 _sg_cfg_cb__weight_S, NULL);
539 xbt_cfg_register(&_sg_cfg_set, "path",
540 "Lookup path for inclusions in platform and deployment XML files",
541 xbt_cfgelm_string, NULL, 0, 0,
542 _sg_cfg_cb__surf_path, NULL);
544 default_value = xbt_strdup("off");
545 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
546 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
547 xbt_cfgelm_boolean, &default_value, 0, 1,
549 default_value = xbt_strdup("off");
550 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
551 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
552 xbt_cfgelm_boolean, &default_value, 0, 1,
556 /* do model-checking */
557 default_value = xbt_strdup("off");
558 xbt_cfg_register(&_sg_cfg_set, "model-check",
559 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
560 xbt_cfgelm_boolean, NULL, 0, 1,
561 _sg_cfg_cb_model_check, NULL);
562 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check", default_value);
564 /* do stateful model-checking */
565 default_value = xbt_strdup("off");
566 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
567 "Specify the amount of steps between checkpoints during stateful model-checking (default: off => stateless verification). "
568 "If value=on, one checkpoint is saved for each step => faster verification, but huge memory consumption; higher values are good compromises between speed and memory consumption.",
569 xbt_cfgelm_boolean, NULL, 0, 1,
570 _mc_cfg_cb_checkpoint, NULL);
571 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/checkpoint", default_value);
573 /* do liveness model-checking */
574 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
575 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
576 xbt_cfgelm_string, NULL, 0, 1,
577 _mc_cfg_cb_property, NULL);
578 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
580 /* Specify the kind of model-checking reduction */
581 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
582 "Specify the kind of exploration reduction (either none or DPOR)",
583 xbt_cfgelm_string, NULL, 0, 1,
584 _mc_cfg_cb_reduce, NULL);
585 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
587 /* Enable/disable timeout for wait requests with model-checking */
588 default_value = xbt_strdup("off");
589 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
590 "Enable/Disable timeout for wait requests",
591 xbt_cfgelm_boolean, NULL, 0, 1,
592 _mc_cfg_cb_timeout, NULL);
593 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", default_value);
595 /* Set max depth exploration */
596 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
597 "Specify the max depth of exploration (default : 1000)",
598 xbt_cfgelm_int, NULL, 0, 1,
599 _mc_cfg_cb_max_depth, NULL);
600 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
602 /* Set number of visited state stored for state comparison reduction*/
603 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
604 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
605 xbt_cfgelm_int, NULL, 0, 1,
606 _mc_cfg_cb_visited, NULL);
607 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
609 /* Set file name for dot output of graph state */
610 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
611 "Specify the name of dot file corresponding to graph state",
612 xbt_cfgelm_string, NULL, 0, 1,
613 _mc_cfg_cb_dot_output, NULL);
614 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
617 /* do verbose-exit */
618 default_value = xbt_strdup("on");
619 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
620 "Activate the \"do nothing\" mode in Ctrl-C",
621 xbt_cfgelm_boolean, &default_value, 0, 1,
622 _sg_cfg_cb_verbose_exit, NULL);
625 /* context factory */
626 default_value = xbt_strdup("ucontext");
627 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
628 "Context factory to use in SIMIX (ucontext, thread or raw)",
629 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
631 /* stack size of contexts in Ko */
632 default_value_int = 128;
633 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
634 "Stack size of contexts in Kib (ucontext or raw only)",
635 xbt_cfgelm_int, &default_value_int, 1, 1,
636 _sg_cfg_cb_context_stack_size, NULL);
638 /* number of parallel threads for user processes */
639 default_value_int = 1;
640 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
641 "Number of parallel threads used to execute user contexts",
642 xbt_cfgelm_int, &default_value_int, 1, 1,
643 _sg_cfg_cb_contexts_nthreads, NULL);
645 /* minimal number of user contexts to be run in parallel */
646 default_value_int = 2;
647 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
648 "Minimal number of user contexts to be run in parallel (raw contexts only)",
649 xbt_cfgelm_int, &default_value_int, 1, 1,
650 _sg_cfg_cb_contexts_parallel_threshold, NULL);
652 /* synchronization mode for parallel user contexts */
654 default_value = xbt_strdup("futex");
655 #else //No futex on mac and posix is unimplememted yet
656 default_value = xbt_strdup("busy_wait");
658 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
659 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
660 xbt_cfgelm_string, &default_value, 1, 1,
661 _sg_cfg_cb_contexts_parallel_mode, NULL);
663 default_value = xbt_strdup("no");
664 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
665 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
666 xbt_cfgelm_boolean, &default_value, 1, 1,
667 _sg_cfg_cb__surf_network_coordinates, NULL);
668 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", default_value);
670 default_value = xbt_strdup("no");
671 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
672 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
673 xbt_cfgelm_boolean, &default_value, 0, 1,
674 _sg_cfg_cb__surf_network_crosstraffic, NULL);
675 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", default_value);
678 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
679 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
680 xbt_cfgelm_double, NULL, 1, 1,
681 _sg_cfg_cb__gtnets_jitter, NULL);
682 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
684 default_value_int = 10;
685 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
686 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
687 xbt_cfgelm_int, &default_value_int, 0, 1,
688 _sg_cfg_cb__gtnets_jitter_seed, NULL);
691 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
692 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
693 xbt_cfgelm_string, NULL, 1, 1,
695 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
699 double default_reference_speed = 20000.0;
700 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
701 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
702 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
705 default_value = xbt_strdup("no");
706 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
707 "Boolean indicating whether we should display the timing after simulation.",
708 xbt_cfgelm_boolean, &default_value, 1, 1, NULL,
710 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", default_value);
712 double default_threshold = 1e-6;
713 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
714 "Minimal computation time (in seconds) not discarded.",
715 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
718 int default_small_messages_threshold = 0;
719 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
720 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
721 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
724 int default_send_is_detached_threshold = 65536;
725 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
726 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
727 xbt_cfgelm_int, &default_send_is_detached_threshold, 1, 1, NULL,
730 //For smpi/bw_factor and smpi/lat_factor
731 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
732 //test is if( size >= thresholdN ) return valueN;
733 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
734 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
735 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
736 "Bandwidth factors for smpi.",
737 xbt_cfgelm_string, NULL, 1, 1, NULL,
739 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");
741 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
742 "Latency factors for smpi.",
743 xbt_cfgelm_string, NULL, 1, 1, NULL,
745 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");
747 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
748 "Small messages timings (MPI_Send minimum time for small messages)",
749 xbt_cfgelm_string, NULL, 1, 1, NULL,
751 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
753 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
754 "Small messages timings (MPI_Isend minimum time for small messages)",
755 xbt_cfgelm_string, NULL, 1, 1, NULL,
757 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
759 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
760 "Small messages timings (MPI_Recv minimum time for small messages)",
761 xbt_cfgelm_string, NULL, 1, 1, NULL,
763 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
764 double default_iprobe_time = 1e-4;
765 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
766 "Minimum time to inject inside a call to MPI_Iprobe",
767 xbt_cfgelm_double, &default_iprobe_time, 1, 1, NULL,
769 default_value = xbt_strdup("default");
770 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
771 "Which collective selector to use",
772 xbt_cfgelm_string, &default_value, 1, 1, NULL,
775 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
776 "Which collective to use for gather",
777 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_gather,
780 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
781 "Which collective to use for allgather",
782 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allgather,
785 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
786 "Which collective to use for barrier",
787 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_barrier,
790 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
791 "Which collective to use for reduce_scatter",
792 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_reduce_scatter,
795 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
796 "Which collective to use for scatter",
797 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_scatter,
800 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
801 "Which collective to use for allgatherv",
802 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allgatherv,
805 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
806 "Which collective to use for allreduce",
807 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allreduce,
810 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
811 "Which collective to use for alltoall",
812 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_alltoall,
815 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
816 "Which collective to use for alltoallv",
817 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_alltoallv,
820 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
821 "Which collective to use for bcast",
822 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_bcast,
825 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
826 "Which collective to use for reduce",
827 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_reduce,
832 /* retrieves the current directory of the current process */
833 const char *initial_path = __surf_get_initial_path();
834 xbt_assert((initial_path),
835 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
837 surf_path = xbt_dynar_new(sizeof(char *), NULL);
838 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
843 sg_config_cmd_line(argc, argv);
845 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
848 XBT_WARN("Call to sg_config_init() after initialization ignored");
852 void sg_config_finalize(void)
854 if (!_sg_init_status)
855 return; /* Not initialized yet. Nothing to do */
857 xbt_cfg_free(&_sg_cfg_set);
861 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
862 void surf_config_models_setup()
864 char *workstation_model_name;
865 int workstation_id = -1;
866 char *network_model_name = NULL;
867 char *cpu_model_name = NULL;
869 char *storage_model_name = NULL;
871 workstation_model_name =
872 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
873 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
874 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
875 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
877 /* Check whether we use a net/cpu model differing from the default ones, in which case
878 * we should switch to the "compound" workstation model to correctly dispatch stuff to
879 * the right net/cpu models.
882 if((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
883 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
884 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model"))
886 const char *val = "compound";
888 ("Switching workstation model to compound since you changed the network and/or cpu model(s)");
889 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
890 workstation_model_name = (char *) "compound";
893 XBT_DEBUG("Workstation model: %s", workstation_model_name);
895 find_model_description(surf_workstation_model_description,
896 workstation_model_name);
897 if (!strcmp(workstation_model_name, "compound")) {
901 xbt_assert(cpu_model_name,
902 "Set a cpu model to use with the 'compound' workstation model");
904 xbt_assert(network_model_name,
905 "Set a network model to use with the 'compound' workstation model");
908 find_model_description(surf_network_model_description,
911 find_model_description(surf_cpu_model_description, cpu_model_name);
913 surf_cpu_model_description[cpu_id].model_init_preparse();
914 surf_network_model_description[network_id].model_init_preparse();
917 XBT_DEBUG("Call workstation_model_init");
918 surf_workstation_model_description[workstation_id].model_init_preparse();
920 XBT_DEBUG("Call vm_workstation_model_init");
921 surf_vm_workstation_model_init();
923 XBT_DEBUG("Call storage_model_init");
924 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
925 surf_storage_model_description[storage_id].model_init_preparse();
927 /* ********************************************************************* */
928 /* TUTORIAL: New model */
929 int new_model_id = -1;
930 char *new_model_name = NULL;
931 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
932 XBT_DEBUG("Call new model_init");
933 new_model_id = find_model_description(surf_new_model_description, new_model_name);
934 surf_new_model_description[new_model_id].model_init_preparse();
935 /* ********************************************************************* */
938 int sg_cfg_get_int(const char* name)
940 return xbt_cfg_get_int(_sg_cfg_set,name);
942 double sg_cfg_get_double(const char* name)
944 return xbt_cfg_get_double(_sg_cfg_set,name);
946 char* sg_cfg_get_string(const char* name)
948 return xbt_cfg_get_string(_sg_cfg_set,name);
950 int sg_cfg_get_boolean(const char* name)
952 return xbt_cfg_get_boolean(_sg_cfg_set,name);
954 void sg_cfg_get_peer(const char *name, char **peer, int *port)
956 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
958 xbt_dynar_t sg_cfg_get_dynar(const char* name)
960 return xbt_cfg_get_dynar(_sg_cfg_set,name);