1 /* Copyright (c) 2009-2010, 2012-2015. 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"
22 #include "smpi/smpi_interface.h"
25 #include "mc/mc_record.h"
26 #include "simgrid/instr.h"
27 #include "mc/mc_replay.h"
29 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf,
30 "About the configuration of simgrid");
32 xbt_cfg_t _sg_cfg_set = NULL;
34 /* 0: beginning of time (config cannot be changed yet);
35 * 1: initialized: cfg_set created (config can now be changed);
36 * 2: configured: command line parsed and config part of platform file was
37 * integrated also, platform construction ongoing or done.
38 * (Config cannot be changed anymore!)
40 int _sg_cfg_init_status = 0;
42 /* instruct the upper layer (simix or simdag) to exit as soon as possible
44 int _sg_cfg_exit_asap = 0;
46 #define sg_cfg_exit_early() do { _sg_cfg_exit_asap = 1; return; } while (0)
48 /* Parse the command line, looking for options */
49 static void sg_config_cmd_line(int *argc, char **argv)
55 for (j = i = 1; i < *argc; i++) {
56 if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
57 opt = strchr(argv[i], '=');
60 xbt_cfg_set_parse(_sg_cfg_set, opt);
61 XBT_DEBUG("Did apply '%s' as config setting", opt);
62 } else if (!strcmp(argv[i], "--version")) {
63 printf("%s\n", SIMGRID_VERSION_STRING);
65 } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
67 ("Description of the configuration accepted by this simulator:\n");
68 xbt_cfg_help(_sg_cfg_set);
71 "Each of these configurations can be used by adding\n"
72 " --cfg=<option name>:<option value>\n"
73 "to the command line.\n"
75 "You can also use --help-models to see the details of all models known by this simulator.\n"
77 "You can also use --help-tracing to see the details of all tracing options known by this simulator.\n"
79 "You can also use --help-logs and --help-log-categories to see the details of logging output.\n"
81 "You can also use --version to get SimGrid version information.\n"
85 } else if (!strcmp(argv[i], "--help-models")) {
88 model_help("host", surf_host_model_description);
90 model_help("CPU", surf_cpu_model_description);
92 model_help("network", surf_network_model_description);
93 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
94 for (k = 0; surf_optimization_mode_description[k].name; k++)
96 surf_optimization_mode_description[k].name,
97 surf_optimization_mode_description[k].description);
98 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
100 } else if (!strcmp(argv[i], "--help-tracing")) {
115 /* callback of the plugin variable */
116 static void _sg_cfg_cb__plugin(const char *name, int pos)
121 xbt_assert(_sg_cfg_init_status < 2,
122 "Cannot load a plugin after the initialization");
124 val = xbt_cfg_get_string(_sg_cfg_set, name);
126 if (!strcmp(val, "help")) {
127 model_help("plugin", surf_plugin_description);
131 /* New Module missing */
132 int plugin_id = find_model_description(surf_plugin_description, val);
133 surf_plugin_description[plugin_id].model_init_preparse();
136 /* callback of the host/model variable */
137 static void _sg_cfg_cb__host_model(const char *name, int pos)
141 xbt_assert(_sg_cfg_init_status < 2,
142 "Cannot change the model after the initialization");
144 val = xbt_cfg_get_string(_sg_cfg_set, name);
146 if (!strcmp(val, "help")) {
147 model_help("host", surf_host_model_description);
151 /* Make sure that the model exists */
152 find_model_description(surf_host_model_description, val);
155 /* callback of the vm/model variable */
156 static void _sg_cfg_cb__vm_model(const char *name, int pos)
160 xbt_assert(_sg_cfg_init_status < 2,
161 "Cannot change the model after the initialization");
163 val = xbt_cfg_get_string(_sg_cfg_set, name);
165 if (!strcmp(val, "help")) {
166 model_help("vm", surf_vm_model_description);
170 /* Make sure that the model exists */
171 find_model_description(surf_vm_model_description, val);
174 /* callback of the cpu/model variable */
175 static void _sg_cfg_cb__cpu_model(const char *name, int pos)
179 xbt_assert(_sg_cfg_init_status < 2,
180 "Cannot change the model after the initialization");
182 val = xbt_cfg_get_string(_sg_cfg_set, name);
184 if (!strcmp(val, "help")) {
185 model_help("CPU", surf_cpu_model_description);
189 /* New Module missing */
190 find_model_description(surf_cpu_model_description, val);
193 /* callback of the cpu/model variable */
194 static void _sg_cfg_cb__optimization_mode(const char *name, int pos)
198 xbt_assert(_sg_cfg_init_status < 2,
199 "Cannot change the model after the initialization");
201 val = xbt_cfg_get_string(_sg_cfg_set, name);
203 if (!strcmp(val, "help")) {
204 model_help("optimization", surf_optimization_mode_description);
208 /* New Module missing */
209 find_model_description(surf_optimization_mode_description, val);
212 /* callback of the cpu/model variable */
213 static void _sg_cfg_cb__storage_mode(const char *name, int pos)
217 xbt_assert(_sg_cfg_init_status < 2,
218 "Cannot change the model after the initialization");
220 val = xbt_cfg_get_string(_sg_cfg_set, name);
222 if (!strcmp(val, "help")) {
223 model_help("storage", surf_storage_model_description);
227 /* New Module missing */
228 find_model_description(surf_storage_model_description, val);
231 /* callback of the network_model variable */
232 static void _sg_cfg_cb__network_model(const char *name, int pos)
236 xbt_assert(_sg_cfg_init_status < 2,
237 "Cannot change the model after the initialization");
239 val = xbt_cfg_get_string(_sg_cfg_set, name);
241 if (!strcmp(val, "help")) {
242 model_help("network", surf_network_model_description);
246 /* New Module missing */
247 find_model_description(surf_network_model_description, val);
250 /* callbacks of the network models values */
251 static void _sg_cfg_cb__tcp_gamma(const char *name, int pos)
253 sg_tcp_gamma = xbt_cfg_get_double(_sg_cfg_set, name);
256 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
258 sg_maxmin_precision = xbt_cfg_get_double(_sg_cfg_set, name);
261 static void _sg_cfg_cb__surf_precision(const char* name, int pos)
263 sg_surf_precision = xbt_cfg_get_double(_sg_cfg_set, name);
266 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
268 sg_sender_gap = xbt_cfg_get_double(_sg_cfg_set, name);
271 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
273 sg_latency_factor = xbt_cfg_get_double(_sg_cfg_set, name);
276 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
278 sg_bandwidth_factor = xbt_cfg_get_double(_sg_cfg_set, name);
281 static void _sg_cfg_cb__weight_S(const char *name, int pos)
283 sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
287 /* callback of the mpi collectives */
288 static void _sg_cfg_cb__coll(const char *category,
289 s_mpi_coll_description_t * table,
290 const char *name, int pos)
294 xbt_assert(_sg_cfg_init_status < 2,
295 "Cannot change the model after the initialization");
297 val = xbt_cfg_get_string(_sg_cfg_set, name);
299 if (!strcmp(val, "help")) {
300 coll_help(category, table);
304 /* New Module missing */
305 find_coll_description(table, val, category);
307 static void _sg_cfg_cb__coll_gather(const char *name, int pos){
308 _sg_cfg_cb__coll("gather", mpi_coll_gather_description, name, pos);
310 static void _sg_cfg_cb__coll_allgather(const char *name, int pos){
311 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
313 static void _sg_cfg_cb__coll_allgatherv(const char *name, int pos){
314 _sg_cfg_cb__coll("allgatherv", mpi_coll_allgatherv_description, name, pos);
316 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
318 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
320 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
322 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
324 static void _sg_cfg_cb__coll_alltoallv(const char *name, int pos)
326 _sg_cfg_cb__coll("alltoallv", mpi_coll_alltoallv_description, name, pos);
328 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
330 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
332 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
334 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
336 static void _sg_cfg_cb__coll_reduce_scatter(const char *name, int pos){
337 _sg_cfg_cb__coll("reduce_scatter", mpi_coll_reduce_scatter_description, name, pos);
339 static void _sg_cfg_cb__coll_scatter(const char *name, int pos){
340 _sg_cfg_cb__coll("scatter", mpi_coll_scatter_description, name, pos);
342 static void _sg_cfg_cb__coll_barrier(const char *name, int pos){
343 _sg_cfg_cb__coll("barrier", mpi_coll_barrier_description, name, pos);
346 static void _sg_cfg_cb__wtime_sleep(const char *name, int pos){
347 smpi_wtime_sleep = xbt_cfg_get_double(_sg_cfg_set, name);
350 static void _sg_cfg_cb__iprobe_sleep(const char *name, int pos){
351 smpi_iprobe_sleep = xbt_cfg_get_double(_sg_cfg_set, name);
354 static void _sg_cfg_cb__test_sleep(const char *name, int pos){
355 smpi_test_sleep = xbt_cfg_get_double(_sg_cfg_set, name);
362 /* callback of the inclusion path */
363 static void _sg_cfg_cb__surf_path(const char *name, int pos)
365 char *path = xbt_cfg_get_string_at(_sg_cfg_set, name, pos);
366 xbt_dynar_push(surf_path, &path);
369 /* callback to decide if we want to use the model-checking */
370 #include "xbt_modinter.h"
373 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
374 extern int _sg_do_model_check_record;
377 static void _sg_cfg_cb_model_check_replay(const char *name, int pos)
379 MC_record_path = xbt_cfg_get_string(_sg_cfg_set, name);
382 static void _sg_cfg_cb_model_check_record(const char *name, int pos)
385 _sg_do_model_check_record = xbt_cfg_get_boolean(_sg_cfg_set, name);
387 if (xbt_cfg_get_boolean(_sg_cfg_set, name)) {
388 xbt_die("You tried to activate the model-checking record from the command line, but it was not compiled in. Change your settings in cmake, recompile and try again");
393 extern int _sg_do_verbose_exit;
395 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
397 _sg_do_verbose_exit = xbt_cfg_get_boolean(_sg_cfg_set, name);
400 extern int _sg_do_clean_atexit;
402 static void _sg_cfg_cb_clean_atexit(const char *name, int pos)
404 _sg_do_clean_atexit = xbt_cfg_get_boolean(_sg_cfg_set, name);
407 static void _sg_cfg_cb_context_factory(const char *name, int pos)
409 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
412 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
414 smx_context_stack_size_was_set = 1;
415 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
418 static void _sg_cfg_cb_context_guard_size(const char *name, int pos)
420 smx_context_guard_size_was_set = 1;
421 smx_context_guard_size = xbt_cfg_get_int(_sg_cfg_set, name) * xbt_pagesize;
424 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
426 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
429 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
431 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
434 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
436 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
437 if (!strcmp(mode_name, "posix")) {
438 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
440 else if (!strcmp(mode_name, "futex")) {
441 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
443 else if (!strcmp(mode_name, "busy_wait")) {
444 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
447 xbt_die("Command line setting of the parallel synchronization mode should "
448 "be one of \"posix\", \"futex\" or \"busy_wait\"");
452 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
455 static int already_set = 0;
456 int val = xbt_cfg_get_boolean(_sg_cfg_set, name);
459 COORD_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_dynar_free_voidp);
460 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
465 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
468 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
471 sg_network_crosstraffic = xbt_cfg_get_boolean(_sg_cfg_set, name);
474 /* build description line with possible values */
475 static void describe_model(char *result,
476 const s_surf_model_description_t model_description[],
478 const char *description)
481 sprintf(result, "%s. Possible values: %s", description,
482 model_description[0].name ? model_description[0].name : "n/a");
484 for (i = 1; model_description[i].name; i++)
485 p += sprintf(p, ", %s", model_description[i].name);
487 ".\n (use 'help' as a value to see the long description of each %s)",
491 /* create the config set, register what should be and parse the command line*/
492 void sg_config_init(int *argc, char **argv)
494 char description[1024];
496 /* Create the configuration support */
497 if (_sg_cfg_init_status == 0) { /* Only create stuff if not already inited */
499 /* Plugins configuration */
500 describe_model(description, surf_plugin_description,
501 "plugin", "The plugins");
502 xbt_cfg_register(&_sg_cfg_set, "plugin", description,
503 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__plugin, NULL);
505 describe_model(description, surf_cpu_model_description,
506 "model", "The model to use for the CPU");
507 xbt_cfg_register(&_sg_cfg_set, "cpu/model", description,
508 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__cpu_model, NULL);
509 xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/model", "Cas01");
511 describe_model(description, surf_optimization_mode_description,
513 "The optimization modes to use for the CPU");
514 xbt_cfg_register(&_sg_cfg_set, "cpu/optim", description,
515 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
516 xbt_cfg_setdefault_string(_sg_cfg_set, "cpu/optim", "Lazy");
518 describe_model(description, surf_storage_model_description,
519 "model", "The model to use for the storage");
520 xbt_cfg_register(&_sg_cfg_set, "storage/model", description,
521 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__storage_mode, NULL);
522 xbt_cfg_setdefault_string(_sg_cfg_set, "storage/model", "default");
524 describe_model(description, surf_network_model_description,
525 "model", "The model to use for the network");
526 xbt_cfg_register(&_sg_cfg_set, "network/model", description,
527 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__network_model, NULL);
528 xbt_cfg_setdefault_string(_sg_cfg_set, "network/model", "LV08");
530 describe_model(description, surf_optimization_mode_description,
532 "The optimization modes to use for the network");
533 xbt_cfg_register(&_sg_cfg_set, "network/optim", description,
534 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__optimization_mode, NULL);
535 xbt_cfg_setdefault_string(_sg_cfg_set, "network/optim", "Lazy");
537 describe_model(description, surf_host_model_description,
538 "model", "The model to use for the host");
539 xbt_cfg_register(&_sg_cfg_set, "host/model", description,
540 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__host_model, NULL);
541 xbt_cfg_setdefault_string(_sg_cfg_set, "host/model", "default");
543 describe_model(description, surf_vm_model_description,
544 "model", "The model to use for the vm");
545 xbt_cfg_register(&_sg_cfg_set, "vm/model", description,
546 xbt_cfgelm_string, 1, 1, &_sg_cfg_cb__vm_model, NULL);
547 xbt_cfg_setdefault_string(_sg_cfg_set, "vm/model", "default");
549 xbt_cfg_register(&_sg_cfg_set, "network/TCP_gamma",
550 "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)",
551 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__tcp_gamma, NULL);
552 xbt_cfg_setdefault_double(_sg_cfg_set, "network/TCP_gamma", 4194304.0);
554 xbt_cfg_register(&_sg_cfg_set, "surf/precision",
555 "Numerical precision used when updating simulation times (hence this value is expressed in seconds)",
556 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__surf_precision, NULL);
557 xbt_cfg_setdefault_double(_sg_cfg_set, "surf/precision", 0.00001);
559 xbt_cfg_register(&_sg_cfg_set, "maxmin/precision",
560 "Numerical precision used when computing resource sharing (hence this value is expressed in ops/sec or bytes/sec)",
561 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__maxmin_precision, NULL);
562 xbt_cfg_setdefault_double(_sg_cfg_set, "maxmin/precision", 0.00001);
564 /* The parameters of network models */
566 xbt_cfg_register(&_sg_cfg_set, "network/sender_gap",
567 "Minimum gap between two overlapping sends",
568 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__sender_gap, NULL);
569 /* real default for "network/sender_gap" is set in network_smpi.cpp */
570 xbt_cfg_setdefault_double(_sg_cfg_set, "network/sender_gap", NAN);
572 xbt_cfg_register(&_sg_cfg_set, "network/latency_factor",
573 "Correction factor to apply to the provided latency (default value set by network model)",
574 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__latency_factor, NULL);
575 xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 1.0);
577 xbt_cfg_register(&_sg_cfg_set, "network/bandwidth_factor",
578 "Correction factor to apply to the provided bandwidth (default value set by network model)",
579 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__bandwidth_factor, NULL);
580 xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 1.0);
582 xbt_cfg_register(&_sg_cfg_set, "network/weight_S",
583 "Correction factor to apply to the weight of competing streams (default value set by network model)",
584 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__weight_S, NULL);
585 /* real default for "network/weight_S" is set in network_*.cpp */
586 xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", NAN);
589 xbt_cfg_register(&_sg_cfg_set, "path",
590 "Lookup path for inclusions in platform and deployment XML files",
591 xbt_cfgelm_string, 1, 0, _sg_cfg_cb__surf_path, NULL);
593 xbt_cfg_register(&_sg_cfg_set, "cpu/maxmin_selective_update",
594 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
595 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
596 xbt_cfg_setdefault_boolean(_sg_cfg_set, "cpu/maxmin_selective_update", "no");
598 xbt_cfg_register(&_sg_cfg_set, "network/maxmin_selective_update",
599 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
600 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
601 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/maxmin_selective_update", "no");
603 /* Replay (this part is enabled event if MC it disabled) */
604 xbt_cfg_register(&_sg_cfg_set, "model-check/replay",
605 "Uenable replay mode with the given path",
606 xbt_cfgelm_string, 0, 1, _sg_cfg_cb_model_check_replay, NULL);
609 /* do model-checking-record */
610 xbt_cfg_register(&_sg_cfg_set, "model-check/record",
611 "Record the model-checking paths",
612 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_model_check_record, NULL);
613 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/record", "no");
615 /* do stateful model-checking */
616 xbt_cfg_register(&_sg_cfg_set, "model-check/checkpoint",
617 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
618 "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.",
619 xbt_cfgelm_int, 1, 1, _mc_cfg_cb_checkpoint, NULL);
620 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/checkpoint", 0);
622 /* do stateful model-checking */
623 xbt_cfg_register(&_sg_cfg_set, "model-check/sparse-checkpoint",
624 "Use sparse per-page snapshots.",
625 xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_sparse_checkpoint, NULL);
626 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/sparse-checkpoint", "no");
628 /* do liveness model-checking */
629 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
630 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
631 xbt_cfgelm_string, 1, 1, _mc_cfg_cb_property, NULL);
632 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
634 /* do communications determinism model-checking */
635 xbt_cfg_register(&_sg_cfg_set, "model-check/communications_determinism",
636 "Enable/disable the detection of determinism in the communications schemes",
637 xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_comms_determinism, NULL);
638 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/communications_determinism", "no");
640 /* do send determinism model-checking */
641 xbt_cfg_register(&_sg_cfg_set, "model-check/send_determinism",
642 "Enable/disable the detection of send-determinism in the communications schemes",
643 xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_send_determinism, NULL);
644 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/send_determinism", "no");
646 /* Specify the kind of model-checking reduction */
647 xbt_cfg_register(&_sg_cfg_set, "model-check/reduction",
648 "Specify the kind of exploration reduction (either none or DPOR)",
649 xbt_cfgelm_string, 1, 1, _mc_cfg_cb_reduce, NULL);
650 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/reduction", "dpor");
652 /* Enable/disable timeout for wait requests with model-checking */
653 xbt_cfg_register(&_sg_cfg_set, "model-check/timeout",
654 "Enable/Disable timeout for wait requests",
655 xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_timeout, NULL);
656 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/timeout", "no");
658 /* Enable/disable global hash computation with model-checking */
659 xbt_cfg_register(&_sg_cfg_set, "model-check/hash",
660 "Enable/Disable state hash for state comparison (exprimental)",
661 xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_hash, NULL);
662 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/hash", "no");
664 /* Set max depth exploration */
665 /* Currently, this option cannot be used. */
666 xbt_cfg_register(&_sg_cfg_set, "model-check/snapshot_fds",
667 "Whether file descriptors must be snapshoted",
668 xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_snapshot_fds, NULL);
669 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/snapshot_fds", "no");
671 /* Set max depth exploration */
672 xbt_cfg_register(&_sg_cfg_set, "model-check/max_depth",
673 "Specify the max depth of exploration (default : 1000)",
674 xbt_cfgelm_int, 1, 1, _mc_cfg_cb_max_depth, NULL);
675 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/max_depth", 1000);
677 /* Set number of visited state stored for state comparison reduction*/
678 xbt_cfg_register(&_sg_cfg_set, "model-check/visited",
679 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
680 xbt_cfgelm_int, 1, 1, _mc_cfg_cb_visited, NULL);
681 xbt_cfg_setdefault_int(_sg_cfg_set, "model-check/visited", 0);
683 /* Set file name for dot output of graph state */
684 xbt_cfg_register(&_sg_cfg_set, "model-check/dot_output",
685 "Specify the name of dot file corresponding to graph state",
686 xbt_cfgelm_string, 1, 1, _mc_cfg_cb_dot_output, NULL);
687 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/dot_output", "");
689 /* Enable/disable non progressive cycles detection with model-checking */
690 xbt_cfg_register(&_sg_cfg_set, "model-check/termination",
691 "Enable/Disable non progressive cycle detection",
692 xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_termination, NULL);
693 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/termination", "no");
696 /* do verbose-exit */
697 xbt_cfg_register(&_sg_cfg_set, "verbose-exit",
698 "Activate the \"do nothing\" mode in Ctrl-C",
699 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_verbose_exit, NULL);
700 xbt_cfg_setdefault_boolean(_sg_cfg_set, "verbose-exit", "yes");
702 /* context factory */
703 const char *dflt_ctx_fact = "thread";
705 char *p = description +
707 "Context factory to use in SIMIX. Possible values: %s",
709 #ifdef CONTEXT_UCONTEXT
710 dflt_ctx_fact = "ucontext";
711 p += sprintf(p, ", %s", dflt_ctx_fact);
714 dflt_ctx_fact = "raw";
715 p += sprintf(p, ", %s", dflt_ctx_fact);
719 xbt_cfg_register(&_sg_cfg_set, "contexts/factory", description,
720 xbt_cfgelm_string, 1, 1, _sg_cfg_cb_context_factory, NULL);
721 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/factory", dflt_ctx_fact);
723 /* stack size of contexts in KiB */
724 xbt_cfg_register(&_sg_cfg_set, "contexts/stack_size",
725 "Stack size of contexts in KiB",
726 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_stack_size, NULL);
727 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/stack_size", 8*1024);
728 /* No, it was not set yet (the above setdefault() changed this to 1). */
729 smx_context_stack_size_was_set = 0;
731 /* guard size for contexts stacks in memory pages */
732 xbt_cfg_register(&_sg_cfg_set, "contexts/guard_size",
733 "Guard size for contexts stacks in memory pages",
734 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_guard_size, NULL);
735 #if defined(_XBT_WIN32) || (PTH_STACKGROWTH != -1)
736 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/guard_size", 0);
738 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/guard_size", 1);
740 /* No, it was not set yet (the above setdefault() changed this to 1). */
741 smx_context_guard_size_was_set = 0;
743 /* number of parallel threads for user processes */
744 xbt_cfg_register(&_sg_cfg_set, "contexts/nthreads",
745 "Number of parallel threads used to execute user contexts",
746 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_nthreads, NULL);
747 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/nthreads", 1);
749 /* minimal number of user contexts to be run in parallel */
750 xbt_cfg_register(&_sg_cfg_set, "contexts/parallel_threshold",
751 "Minimal number of user contexts to be run in parallel (raw contexts only)",
752 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_contexts_parallel_threshold, NULL);
753 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/parallel_threshold", 2);
755 /* synchronization mode for parallel user contexts */
756 xbt_cfg_register(&_sg_cfg_set, "contexts/synchro",
757 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
758 xbt_cfgelm_string, 1, 1, _sg_cfg_cb_contexts_parallel_mode, NULL);
760 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "futex");
761 #else //No futex on mac and posix is unimplememted yet
762 xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "busy_wait");
765 xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
766 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
767 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_coordinates, NULL);
768 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/coordinates", "no");
770 xbt_cfg_register(&_sg_cfg_set, "network/crosstraffic",
771 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
772 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_crosstraffic, NULL);
773 xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", "no");
776 xbt_cfg_register(&_sg_cfg_set, "ns3/TcpModel",
777 "The ns3 tcp model can be : NewReno or Reno or Tahoe",
778 xbt_cfgelm_string, 1, 1, NULL, NULL);
779 xbt_cfg_setdefault_string(_sg_cfg_set, "ns3/TcpModel", "default");
782 //For smpi/bw_factor and smpi/lat_factor
783 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
784 //test is if( size >= thresholdN ) return valueN;
785 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
786 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
787 // SMPI model can be used without enable_smpi, so keep this the ifdef.
788 xbt_cfg_register(&_sg_cfg_set, "smpi/bw_factor",
789 "Bandwidth factors for smpi.",
790 xbt_cfgelm_string, 1, 1, NULL, NULL);
791 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");
793 xbt_cfg_register(&_sg_cfg_set, "smpi/lat_factor",
794 "Latency factors for smpi.",
795 xbt_cfgelm_string, 1, 1, NULL, NULL);
796 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");
798 xbt_cfg_register(&_sg_cfg_set, "smpi/IB_penalty_factors",
799 "Correction factor to communications using Infiniband model with contention (default value based on Stampede cluster profiling)",
800 xbt_cfgelm_string, 1, 1, NULL, NULL);
801 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/IB_penalty_factors", "0.965;0.925;1.35");
804 xbt_cfg_register(&_sg_cfg_set, "smpi/running_power",
805 "Power of the host running the simulation (in flop/s). Used to bench the operations.",
806 xbt_cfgelm_double, 1, 1, NULL, NULL);
807 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/running_power", 20000.0);
809 xbt_cfg_register(&_sg_cfg_set, "smpi/display_timing",
810 "Boolean indicating whether we should display the timing after simulation.",
811 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
812 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/display_timing", "no");
814 xbt_cfg_register(&_sg_cfg_set, "smpi/simulate_computation",
815 "Boolean indicating whether the computational part of the simulated application should be simulated.",
816 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
817 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/simulate_computation", "yes");
819 xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
820 "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
821 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
822 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", "yes");
824 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
825 "Minimal computation time (in seconds) not discarded, or -1 for infinity.",
826 xbt_cfgelm_double, 1, 1, NULL, NULL);
827 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/cpu_threshold", 1e-6);
829 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thres",
830 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
831 xbt_cfgelm_int, 1, 1, NULL, NULL);
832 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/async_small_thres", 0);
834 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thres",
835 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
836 xbt_cfgelm_int, 1, 1, NULL, NULL);
837 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/send_is_detached_thres", 65536);
839 xbt_cfg_register(&_sg_cfg_set, "smpi/privatize_global_variables",
840 "Boolean indicating whether we should privatize global variable at runtime.",
841 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
842 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/privatize_global_variables", "no");
844 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
845 "Small messages timings (MPI_Send minimum time for small messages)",
846 xbt_cfgelm_string, 1, 1, NULL, NULL);
847 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/os", "1:0:0:0:0");
849 xbt_cfg_register(&_sg_cfg_set, "smpi/ois",
850 "Small messages timings (MPI_Isend minimum time for small messages)",
851 xbt_cfgelm_string, 1, 1, NULL, NULL);
852 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
854 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
855 "Small messages timings (MPI_Recv minimum time for small messages)",
856 xbt_cfgelm_string, 1, 1, NULL, NULL);
857 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
859 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
860 "Minimum time to inject inside a call to MPI_Iprobe",
861 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__iprobe_sleep, NULL);
862 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/iprobe", 1e-4);
864 xbt_cfg_register(&_sg_cfg_set, "smpi/test",
865 "Minimum time to inject inside a call to MPI_Test",
866 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__test_sleep, NULL);
867 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/test", 1e-4);
869 xbt_cfg_register(&_sg_cfg_set, "smpi/wtime",
870 "Minimum time to inject inside a call to MPI_Wtime",
871 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__wtime_sleep, NULL);
872 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/wtime", 0.0);
874 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
875 "Which collective selector to use",
876 xbt_cfgelm_string, 1, 1, NULL, NULL);
877 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/coll_selector", "default");
879 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
880 "Which collective to use for gather",
881 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_gather, NULL);
883 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
884 "Which collective to use for allgather",
885 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allgather, NULL);
887 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
888 "Which collective to use for barrier",
889 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_barrier, NULL);
891 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
892 "Which collective to use for reduce_scatter",
893 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_reduce_scatter, NULL);
895 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
896 "Which collective to use for scatter",
897 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_scatter, NULL);
899 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
900 "Which collective to use for allgatherv",
901 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allgatherv, NULL);
903 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
904 "Which collective to use for allreduce",
905 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allreduce, NULL);
907 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
908 "Which collective to use for alltoall",
909 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_alltoall, NULL);
911 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoallv",
912 "Which collective to use for alltoallv",
913 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_alltoallv, NULL);
915 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
916 "Which collective to use for bcast",
917 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_bcast, NULL);
919 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
920 "Which collective to use for reduce",
921 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_reduce, NULL);
924 xbt_cfg_register(&_sg_cfg_set, "exception/cutpath",
925 "\"yes\" or \"no\". \"yes\" will cut all path information from call traces, used e.g. in exceptions.",
926 xbt_cfgelm_boolean, 1, 1, NULL, NULL);
927 xbt_cfg_setdefault_boolean(_sg_cfg_set, "exception/cutpath", "no");
929 xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
930 "\"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.",
931 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_clean_atexit, NULL);
932 xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", "yes");
935 /* retrieves the current directory of the current process */
936 const char *initial_path = __surf_get_initial_path();
937 xbt_assert((initial_path),
938 "__surf_get_initial_path() failed! Can't resolve current Windows directory");
940 surf_path = xbt_dynar_new(sizeof(char *), NULL);
941 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
944 xbt_cfg_check(_sg_cfg_set);
945 _sg_cfg_init_status = 1;
947 sg_config_cmd_line(argc, argv);
949 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
952 XBT_WARN("Call to sg_config_init() after initialization ignored");
956 void sg_config_finalize(void)
958 if (!_sg_cfg_init_status)
959 return; /* Not initialized yet. Nothing to do */
961 xbt_cfg_free(&_sg_cfg_set);
962 _sg_cfg_init_status = 0;
965 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
966 void surf_config_models_setup()
968 const char *host_model_name;
969 const char *vm_model_name;
972 char *network_model_name = NULL;
973 char *cpu_model_name = NULL;
975 char *storage_model_name = NULL;
977 host_model_name = xbt_cfg_get_string(_sg_cfg_set, "host/model");
978 vm_model_name = xbt_cfg_get_string(_sg_cfg_set, "vm/model");
979 network_model_name = xbt_cfg_get_string(_sg_cfg_set, "network/model");
980 cpu_model_name = xbt_cfg_get_string(_sg_cfg_set, "cpu/model");
981 storage_model_name = xbt_cfg_get_string(_sg_cfg_set, "storage/model");
983 /* Check whether we use a net/cpu model differing from the default ones, in which case
984 * we should switch to the "compound" host model to correctly dispatch stuff to
985 * the right net/cpu models.
988 if ((!xbt_cfg_is_default_value(_sg_cfg_set, "network/model") ||
989 !xbt_cfg_is_default_value(_sg_cfg_set, "cpu/model")) &&
990 xbt_cfg_is_default_value(_sg_cfg_set, "host/model")) {
991 host_model_name = "compound";
992 xbt_cfg_set_string(_sg_cfg_set, "host/model", host_model_name);
995 XBT_DEBUG("host model: %s", host_model_name);
996 host_id = find_model_description(surf_host_model_description, host_model_name);
997 if (!strcmp(host_model_name, "compound")) {
1001 xbt_assert(cpu_model_name,
1002 "Set a cpu model to use with the 'compound' host model");
1004 xbt_assert(network_model_name,
1005 "Set a network model to use with the 'compound' host model");
1007 if(surf_cpu_model_init_preparse){
1008 surf_cpu_model_init_preparse();
1011 find_model_description(surf_cpu_model_description, cpu_model_name);
1012 surf_cpu_model_description[cpu_id].model_init_preparse();
1016 find_model_description(surf_network_model_description,
1017 network_model_name);
1018 surf_network_model_description[network_id].model_init_preparse();
1021 XBT_DEBUG("Call host_model_init");
1022 surf_host_model_description[host_id].model_init_preparse();
1024 XBT_DEBUG("Call vm_model_init");
1025 vm_id = find_model_description(surf_vm_model_description, vm_model_name);
1026 surf_vm_model_description[vm_id].model_init_preparse();
1028 XBT_DEBUG("Call storage_model_init");
1029 storage_id = find_model_description(surf_storage_model_description, storage_model_name);
1030 surf_storage_model_description[storage_id].model_init_preparse();
1034 int sg_cfg_is_default_value(const char *name)
1036 return xbt_cfg_is_default_value(_sg_cfg_set, name);
1039 int sg_cfg_get_int(const char* name)
1041 return xbt_cfg_get_int(_sg_cfg_set, name);
1044 double sg_cfg_get_double(const char* name)
1046 return xbt_cfg_get_double(_sg_cfg_set, name);
1049 char* sg_cfg_get_string(const char* name)
1051 return xbt_cfg_get_string(_sg_cfg_set, name);
1054 int sg_cfg_get_boolean(const char* name)
1056 return xbt_cfg_get_boolean(_sg_cfg_set, name);
1059 void sg_cfg_get_peer(const char *name, char **peer, int *port)
1061 xbt_cfg_get_peer(_sg_cfg_set, name, peer, port);
1064 xbt_dynar_t sg_cfg_get_dynar(const char* name)
1066 return xbt_cfg_get_dynar(_sg_cfg_set, name);