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);
197 /* callbacks of the network models values */
198 static void _sg_cfg_cb__tcp_gamma(const char *name, int pos)
200 sg_tcp_gamma = xbt_cfg_get_double(_sg_cfg_set, name);
203 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
205 sg_maxmin_precision = xbt_cfg_get_double(_sg_cfg_set, name);
208 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
210 sg_sender_gap = xbt_cfg_get_double(_sg_cfg_set, name);
213 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
215 sg_latency_factor = xbt_cfg_get_double(_sg_cfg_set, name);
218 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
220 sg_bandwidth_factor = xbt_cfg_get_double(_sg_cfg_set, name);
223 static void _sg_cfg_cb__weight_S(const char *name, int pos)
225 sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
229 /* callback of the mpi collectives */
230 static void _sg_cfg_cb__coll(const char *category,
231 s_mpi_coll_description_t * table,
232 const char *name, int pos)
236 xbt_assert(_sg_init_status == 1,
237 "Cannot change the model after the initialization");
239 val = xbt_cfg_get_string(_sg_cfg_set, name);
241 if (!strcmp(val, "help")) {
242 coll_help(category, table);
246 /* New Module missing */
247 find_coll_description(table, val);
249 static void _sg_cfg_cb__coll_gather(const char *name, int pos){
250 _sg_cfg_cb__coll("gather", mpi_coll_gather_description, name, pos);
252 static void _sg_cfg_cb__coll_allgather(const char *name, int pos){
253 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
255 static void _sg_cfg_cb__coll_allgatherv(const char *name, int pos){
256 _sg_cfg_cb__coll("allgatherv", mpi_coll_allgatherv_description, name, pos);
258 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
260 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
262 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
264 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
266 static void _sg_cfg_cb__coll_alltoallv(const char *name, int pos)
268 _sg_cfg_cb__coll("alltoallv", mpi_coll_alltoallv_description, name, pos);
270 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
272 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
274 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
276 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
278 static void _sg_cfg_cb__coll_reduce_scatter(const char *name, int pos){
279 _sg_cfg_cb__coll("reduce_scatter", mpi_coll_reduce_scatter_description, name, pos);
281 static void _sg_cfg_cb__coll_scatter(const char *name, int pos){
282 _sg_cfg_cb__coll("scatter", mpi_coll_scatter_description, name, pos);
284 static void _sg_cfg_cb__coll_barrier(const char *name, int pos){
285 _sg_cfg_cb__coll("barrier", mpi_coll_barrier_description, name, pos);
289 /* callback of the inclusion path */
290 static void _sg_cfg_cb__surf_path(const char *name, int pos)
292 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
293 xbt_dynar_push(surf_path, &path);
296 /* callback to decide if we want to use the model-checking */
297 #include "xbt_modinter.h"
299 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
302 static void _sg_cfg_cb_model_check(const char *name, int pos)
305 _sg_do_model_check = xbt_cfg_get_boolean(_sg_cfg_set, name);
307 if (xbt_cfg_get_boolean(_sg_cfg_set, name)) {
308 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");
313 extern int _sg_do_verbose_exit;
315 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
317 _sg_do_verbose_exit = xbt_cfg_get_boolean(_sg_cfg_set, name);
320 extern int _sg_do_clean_atexit;
322 static void _sg_cfg_cb_clean_atexit(const char *name, int pos)
324 _sg_do_clean_atexit = xbt_cfg_get_boolean(_sg_cfg_set, name);
327 static void _sg_cfg_cb_context_factory(const char *name, int pos)
329 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
332 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
334 smx_context_stack_size_was_set = 1;
335 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
338 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
340 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
343 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
345 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
348 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
350 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
351 if (!strcmp(mode_name, "posix")) {
352 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
354 else if (!strcmp(mode_name, "futex")) {
355 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
357 else if (!strcmp(mode_name, "busy_wait")) {
358 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
361 xbt_die("Command line setting of the parallel synchronization mode should "
362 "be one of \"posix\", \"futex\" or \"busy_wait\"");
366 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
369 int val = xbt_cfg_get_boolean(_sg_cfg_set, name);
371 if (!COORD_HOST_LEVEL) {
372 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
373 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
376 if (COORD_HOST_LEVEL)
377 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
380 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
383 sg_network_crosstraffic = xbt_cfg_get_boolean(_sg_cfg_set, name);
387 static void _sg_cfg_cb__gtnets_jitter(const char *name, int pos)
389 sg_gtnets_jitter = xbt_cfg_get_double(_sg_cfg_set, name);
392 static void _sg_cfg_cb__gtnets_jitter_seed(const char *name, int pos)
394 sg_gtnets_jitter_seed = xbt_cfg_get_int(_sg_cfg_set, name);
398 /* create the config set, register what should be and parse the command line*/
399 void sg_config_init(int *argc, char **argv)
401 char *description = xbt_malloc(1024), *p = description;
403 double double_default_value;
404 int default_value_int;
407 /* Create the configuration support */
408 if (_sg_init_status == 0) { /* Only create stuff if not already inited */
410 "The model to use for the CPU. Possible values: ");
412 while (*(++p) != '\0');
413 for (i = 0; surf_cpu_model_description[i].name; i++)
414 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
415 surf_cpu_model_description[i].name);
417 ".\n (use 'help' as a value to see the long description of each model)");
418 default_value = xbt_strdup("Cas01");
419 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description, xbt_cfgelm_string,
420 &default_value, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
423 "The optimization modes to use for the CPU. 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, "cpu/optim", description, xbt_cfgelm_string,
433 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
436 "The model to use for the storage. Possible values: ");
438 while (*(++p) != '\0');
439 for (i = 0; surf_storage_model_description[i].name; i++)
440 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
441 surf_storage_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, "storage/model", description, xbt_cfgelm_string,
446 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
449 /* ********************************************************************* */
450 /* TUTORIAL: New model */
452 "The model to use for the New model. Possible values: ");
454 while (*(++p) != '\0');
455 for (i = 0; surf_new_model_description[i].name; i++)
456 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
457 surf_new_model_description[i].name);
459 ".\n (use 'help' as a value to see the long description of each model)");
460 default_value = xbt_strdup("default");
461 xbt_cfg_register(&_sg_cfg_set, "new_model/model", description, xbt_cfgelm_string,
462 &default_value, 1, 1, &_sg_cfg_cb__storage_mode,
464 /* ********************************************************************* */
467 "The model to use for the network. Possible values: ");
469 while (*(++p) != '\0');
470 for (i = 0; surf_network_model_description[i].name; i++)
471 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
472 surf_network_model_description[i].name);
474 ".\n (use 'help' as a value to see the long description of each model)");
475 default_value = xbt_strdup("LV08");
476 xbt_cfg_register(&_sg_cfg_set, "network/model", description, xbt_cfgelm_string,
477 &default_value, 1, 1, &_sg_cfg_cb__network_model,
481 "The optimization modes to use for the network. Possible values: ");
483 while (*(++p) != '\0');
484 for (i = 0; surf_optimization_mode_description[i].name; i++)
485 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
486 surf_optimization_mode_description[i].name);
488 ".\n (use 'help' as a value to see the long description of each optimization mode)");
489 default_value = xbt_strdup("Lazy");
490 xbt_cfg_register(&_sg_cfg_set, "network/optim", description, xbt_cfgelm_string,
491 &default_value, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
494 "The model to use for the workstation. Possible values: ");
496 while (*(++p) != '\0');
497 for (i = 0; surf_workstation_model_description[i].name; i++)
498 p += sprintf(p, "%s%s", (i == 0 ? "" : ", "),
499 surf_workstation_model_description[i].name);
501 ".\n (use 'help' as a value to see the long description of each model)");
502 default_value = xbt_strdup("default");
503 xbt_cfg_register(&_sg_cfg_set, "workstation/model", description, xbt_cfgelm_string,
504 &default_value, 1, 1,
505 &_sg_cfg_cb__workstation_model, NULL);
507 xbt_free(description);
509 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
510 "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)",
511 xbt_cfgelm_double, NULL, 1, 1,
512 _sg_cfg_cb__tcp_gamma, NULL);
513 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
515 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
516 "Numerical precision used when updating simulation models (epsilon in double comparisons)",
517 xbt_cfgelm_double, NULL, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
518 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
520 /* The parameters of network models */
522 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
523 "Minimum gap between two overlapping sends",
524 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
525 _sg_cfg_cb__sender_gap, NULL);
527 double_default_value = 1.0; // FIXME use setdefault everywhere here!
528 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
529 "Correction factor to apply to the provided latency (default value set by network model)",
530 xbt_cfgelm_double, &double_default_value, 1, 1,
531 _sg_cfg_cb__latency_factor, NULL);
532 double_default_value = 1.0;
533 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
534 "Correction factor to apply to the provided bandwidth (default value set by network model)",
535 xbt_cfgelm_double, &double_default_value, 1, 1,
536 _sg_cfg_cb__bandwidth_factor, NULL);
538 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
539 "Correction factor to apply to the weight of competing streams (default value set by network model)",
540 xbt_cfgelm_double, NULL, 1, 1, /* default is set in network.c */
541 _sg_cfg_cb__weight_S, NULL);
544 xbt_cfg_register(&_sg_cfg_set, "path",
545 "Lookup path for inclusions in platform and deployment XML files",
546 xbt_cfgelm_string, NULL, 0, 0,
547 _sg_cfg_cb__surf_path, NULL);
549 default_value = (char*)"off";
550 xbt_cfg_register(&_sg_cfg_set, "cpu/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,
554 default_value = (char*)"off";
555 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
556 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
557 xbt_cfgelm_boolean, &default_value, 0, 1,
561 /* do model-checking */
562 default_value = (char*)"off";
563 xbt_cfg_register(&_sg_cfg_set, "model-check",
564 "Verify the system through model-checking instead of simulating it (EXPERIMENTAL)",
565 xbt_cfgelm_boolean, NULL, 0, 1,
566 _sg_cfg_cb_model_check, NULL);
567 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check", default_value);
569 /* do stateful model-checking */
570 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
571 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
572 "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.",
573 xbt_cfgelm_int, NULL, 0, 1,
574 _mc_cfg_cb_checkpoint, NULL);
575 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
577 /* do liveness model-checking */
578 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
579 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
580 xbt_cfgelm_string, NULL, 0, 1,
581 _mc_cfg_cb_property, NULL);
582 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
584 /* Specify the kind of model-checking reduction */
585 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
586 "Specify the kind of exploration reduction (either none or DPOR)",
587 xbt_cfgelm_string, NULL, 0, 1,
588 _mc_cfg_cb_reduce, NULL);
589 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
591 /* Enable/disable timeout for wait requests with model-checking */
592 default_value = (char*)"off";
593 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
594 "Enable/Disable timeout for wait requests",
595 xbt_cfgelm_boolean, NULL, 0, 1,
596 _mc_cfg_cb_timeout, NULL);
597 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", default_value);
599 /* Set max depth exploration */
600 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
601 "Specify the max depth of exploration (default : 1000)",
602 xbt_cfgelm_int, NULL, 0, 1,
603 _mc_cfg_cb_max_depth, NULL);
604 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
606 /* Set number of visited state stored for state comparison reduction*/
607 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
608 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
609 xbt_cfgelm_int, NULL, 0, 1,
610 _mc_cfg_cb_visited, NULL);
611 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
613 /* Set file name for dot output of graph state */
614 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
615 "Specify the name of dot file corresponding to graph state",
616 xbt_cfgelm_string, NULL, 0, 1,
617 _mc_cfg_cb_dot_output, NULL);
618 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
621 /* do verbose-exit */
622 default_value = (char*)"on";
623 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
624 "Activate the \"do nothing\" mode in Ctrl-C",
625 xbt_cfgelm_boolean, &default_value, 0, 1,
626 _sg_cfg_cb_verbose_exit, NULL);
628 /* context factory */
629 default_value = xbt_strdup("ucontext");
630 xbt_cfg_register(&_sg_cfg_set, "contexts/factory",
631 "Context factory to use in SIMIX (ucontext, thread or raw)",
632 xbt_cfgelm_string, &default_value, 1, 1, _sg_cfg_cb_context_factory, NULL);
634 /* stack size of contexts in Ko */
635 default_value_int = 128;
636 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
637 "Stack size of contexts in Kib (ucontext or raw only)",
638 xbt_cfgelm_int, &default_value_int, 1, 1,
639 _sg_cfg_cb_context_stack_size, NULL);
641 /* number of parallel threads for user processes */
642 default_value_int = 1;
643 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
644 "Number of parallel threads used to execute user contexts",
645 xbt_cfgelm_int, &default_value_int, 1, 1,
646 _sg_cfg_cb_contexts_nthreads, NULL);
648 /* minimal number of user contexts to be run in parallel */
649 default_value_int = 2;
650 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
651 "Minimal number of user contexts to be run in parallel (raw contexts only)",
652 xbt_cfgelm_int, &default_value_int, 1, 1,
653 _sg_cfg_cb_contexts_parallel_threshold, NULL);
655 /* synchronization mode for parallel user contexts */
657 default_value = xbt_strdup("futex");
658 #else //No futex on mac and posix is unimplememted yet
659 default_value = xbt_strdup("busy_wait");
661 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
662 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
663 xbt_cfgelm_string, &default_value, 1, 1,
664 _sg_cfg_cb_contexts_parallel_mode, NULL);
666 default_value = (char*)"no";
667 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
668 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
669 xbt_cfgelm_boolean, &default_value, 1, 1,
670 _sg_cfg_cb__surf_network_coordinates, NULL);
671 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", default_value);
673 default_value = (char*)"no";
674 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
675 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
676 xbt_cfgelm_boolean, &default_value, 0, 1,
677 _sg_cfg_cb__surf_network_crosstraffic, NULL);
678 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", default_value);
681 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter",
682 "Double value to oscillate the link latency, uniformly in random interval [-latency*gtnets_jitter,latency*gtnets_jitter)",
683 xbt_cfgelm_double, NULL, 1, 1,
684 _sg_cfg_cb__gtnets_jitter, NULL);
685 xbt_cfg_setdefault_double(_sg_cfg_set, "gtnets/jitter", 0.0);
687 default_value_int = 10;
688 xbt_cfg_register(&_sg_cfg_set, "gtnets/jitter_seed",
689 "Use a positive seed to reproduce jitted results, value must be in [1,1e8], default is 10",
690 xbt_cfgelm_int, &default_value_int, 0, 1,
691 _sg_cfg_cb__gtnets_jitter_seed, NULL);
694 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
695 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
696 xbt_cfgelm_string, NULL, 1, 1,
698 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
702 double default_reference_speed = 20000.0;
703 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
704 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
705 xbt_cfgelm_double, &default_reference_speed, 1, 1, NULL,
708 default_value = xbt_strdup("no");
709 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
710 "Boolean indicating whether we should display the timing after simulation.",
711 xbt_cfgelm_boolean, &default_value, 1, 1, NULL,
713 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", default_value);
715 default_value = (char*)"yes";
716 xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
717 "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
718 xbt_cfgelm_boolean, &default_value, 1, 1, NULL,
720 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", default_value);
722 double default_threshold = 1e-6;
723 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
724 "Minimal computation time (in seconds) not discarded.",
725 xbt_cfgelm_double, &default_threshold, 1, 1, NULL,
728 int default_small_messages_threshold = 0;
729 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
730 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
731 xbt_cfgelm_int, &default_small_messages_threshold, 1, 1, NULL,
734 int default_send_is_detached_threshold = 65536;
735 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
736 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
737 xbt_cfgelm_int, &default_send_is_detached_threshold, 1, 1, NULL,
740 //For smpi/bw_factor and smpi/lat_factor
741 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
742 //test is if( size >= thresholdN ) return valueN;
743 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
744 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
745 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
746 "Bandwidth factors for smpi.",
747 xbt_cfgelm_string, NULL, 1, 1, NULL,
749 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");
751 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
752 "Latency factors for smpi.",
753 xbt_cfgelm_string, NULL, 1, 1, NULL,
755 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");
757 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
758 "Small messages timings (MPI_Send minimum time for small messages)",
759 xbt_cfgelm_string, NULL, 1, 1, NULL,
761 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
763 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
764 "Small messages timings (MPI_Isend minimum time for small messages)",
765 xbt_cfgelm_string, NULL, 1, 1, NULL,
767 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
769 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
770 "Small messages timings (MPI_Recv minimum time for small messages)",
771 xbt_cfgelm_string, NULL, 1, 1, NULL,
773 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
774 double default_iprobe_time = 1e-4;
775 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
776 "Minimum time to inject inside a call to MPI_Iprobe",
777 xbt_cfgelm_double, &default_iprobe_time, 1, 1, NULL,
779 default_value = xbt_strdup("default");
780 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
781 "Which collective selector to use",
782 xbt_cfgelm_string, &default_value, 1, 1, NULL,
785 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
786 "Which collective to use for gather",
787 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_gather,
790 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
791 "Which collective to use for allgather",
792 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allgather,
795 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
796 "Which collective to use for barrier",
797 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_barrier,
800 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
801 "Which collective to use for reduce_scatter",
802 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_reduce_scatter,
805 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
806 "Which collective to use for scatter",
807 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_scatter,
810 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
811 "Which collective to use for allgatherv",
812 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allgatherv,
815 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
816 "Which collective to use for allreduce",
817 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_allreduce,
820 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
821 "Which collective to use for alltoall",
822 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_alltoall,
825 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
826 "Which collective to use for alltoallv",
827 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_alltoallv,
830 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
831 "Which collective to use for bcast",
832 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_bcast,
835 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
836 "Which collective to use for reduce",
837 xbt_cfgelm_string, NULL, 1, 1, &_sg_cfg_cb__coll_reduce,
841 default_value = (char*)"yes";
842 xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
843 "\"yes\" or \"no\". \"yes\" enables all the cleanups of SimGrid (XBT,SIMIX,MSG) to be registered with atexit. \"no\" may be useful if your code segfaults when calling the exit function.",
844 xbt_cfgelm_boolean, &default_value, 1, 1,
845 _sg_cfg_cb_clean_atexit, NULL);
846 xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", default_value);
849 /* retrieves the current directory of the current process */
850 const char *initial_path = __surf_get_initial_path();
851 xbt_assert((initial_path),
852 "__surf_get_initial_path() failed! Can't resolves current Windows directory");
854 surf_path = xbt_dynar_new(sizeof(char *), NULL);
855 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
860 sg_config_cmd_line(argc, argv);
862 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
865 XBT_WARN("Call to sg_config_init() after initialization ignored");
869 void sg_config_finalize(void)
871 if (!_sg_init_status)
872 return; /* Not initialized yet. Nothing to do */
874 xbt_cfg_free(&_sg_cfg_set);
878 /* Pick the right models for CPU, net and workstation, and call their model_init_preparse */
879 void surf_config_models_setup()
881 char *workstation_model_name;
882 int workstation_id = -1;
883 char *network_model_name = NULL;
884 char *cpu_model_name = NULL;
886 char *storage_model_name = NULL;
888 workstation_model_name =
889 xbt_cfg_get_string(_sg_cfg_set, "workstation/model");
890 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
891 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
892 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
894 /* Check whether we use a net/cpu model differing from the default ones, in which case
895 * we should switch to the "compound" workstation model to correctly dispatch stuff to
896 * the right net/cpu models.
899 if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
900 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
901 xbt_cfg_is_default_value(_sg_cfg_set, "workstation/model")) {
902 const char *val = "compound";
903 XBT_INFO("Switching workstation model to compound since you changed the network and/or cpu model(s)");
904 xbt_cfg_set_string(_sg_cfg_set, "workstation/model", val);
905 workstation_model_name = (char *) "compound";
908 XBT_DEBUG("Workstation model: %s", workstation_model_name);
910 find_model_description(surf_workstation_model_description,
911 workstation_model_name);
912 if (!strcmp(workstation_model_name, "compound")) {
916 xbt_assert(cpu_model_name,
917 "Set a cpu model to use with the 'compound' workstation model");
919 xbt_assert(network_model_name,
920 "Set a network model to use with the 'compound' workstation model");
923 find_model_description(surf_network_model_description,
926 find_model_description(surf_cpu_model_description, cpu_model_name);
928 surf_cpu_model_description[cpu_id].model_init_preparse();
929 surf_network_model_description[network_id].model_init_preparse();
932 XBT_DEBUG("Call workstation_model_init");
933 surf_workstation_model_description[workstation_id].model_init_preparse();
935 XBT_DEBUG("Call storage_model_init");
936 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
937 surf_storage_model_description[storage_id].model_init_preparse();
939 /* ********************************************************************* */
940 /* TUTORIAL: New model */
941 int new_model_id = -1;
942 char *new_model_name = NULL;
943 new_model_name = xbt_cfg_get_string(_sg_cfg_set, "new_model/model");
944 XBT_DEBUG("Call new model_init");
945 new_model_id = find_model_description(surf_new_model_description, new_model_name);
946 surf_new_model_description[new_model_id].model_init_preparse();
947 /* ********************************************************************* */
950 int sg_cfg_get_int(const char* name)
952 return xbt_cfg_get_int(_sg_cfg_set,name);
955 double sg_cfg_get_double(const char* name)
957 return xbt_cfg_get_double(_sg_cfg_set,name);
960 char* sg_cfg_get_string(const char* name)
962 return xbt_cfg_get_string(_sg_cfg_set,name);
965 int sg_cfg_get_boolean(const char* name)
967 return xbt_cfg_get_boolean(_sg_cfg_set,name);
970 void sg_cfg_get_peer(const char *name, char **peer, int *port)
972 xbt_cfg_get_peer(_sg_cfg_set,name, peer, port);
975 xbt_dynar_t sg_cfg_get_dynar(const char* name)
977 return xbt_cfg_get_dynar(_sg_cfg_set,name);