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"
21 #include "simgrid_config.h" /* what was compiled in? */
23 #include "smpi/smpi_interface.h"
26 #include "simgrid/instr.h"
27 #include "src/mc/mc_replay.h"
29 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_config, surf, "About the configuration of SimGrid");
31 xbt_cfg_t _sg_cfg_set = NULL;
33 /* 0: beginning of time (config cannot be changed yet);
34 * 1: initialized: cfg_set created (config can now be changed);
35 * 2: configured: command line parsed and config part of platform file was
36 * integrated also, platform construction ongoing or done.
37 * (Config cannot be changed anymore!)
39 int _sg_cfg_init_status = 0;
41 /* instruct the upper layer (simix or simdag) to exit as soon as possible */
42 int _sg_cfg_exit_asap = 0;
44 #define sg_cfg_exit_early() do { _sg_cfg_exit_asap = 1; return; } while (0)
46 /* Parse the command line, looking for options */
47 static void sg_config_cmd_line(int *argc, char **argv)
53 for (j = i = 1; i < *argc; i++) {
54 if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) {
55 opt = strchr(argv[i], '=');
58 xbt_cfg_set_parse(_sg_cfg_set, opt);
59 XBT_DEBUG("Did apply '%s' as config setting", opt);
60 } else if (!strcmp(argv[i], "--version")) {
61 printf("%s\n", SIMGRID_VERSION_STRING);
63 } else if (!strcmp(argv[i], "--cfg-help") || !strcmp(argv[i], "--help")) {
64 printf("Description of the configuration accepted by this simulator:\n");
65 xbt_cfg_help(_sg_cfg_set);
68 "Each of these configurations can be used by adding\n"
69 " --cfg=<option name>:<option value>\n"
70 "to the command line.\n"
72 "For more information, please refer to:\n"
73 " --help-aliases for the list of all option aliases.\n"
74 " --help-logs and --help-log-categories for the details of logging output.\n"
75 " --help-models for a list of all models known by this simulator.\n"
76 " --help-tracing for the details of all tracing options known by this simulator.\n"
77 " --version to get SimGrid version information.\n"
81 } else if (!strcmp(argv[i], "--help-aliases")) {
82 printf("Here is a list of all deprecated option names, with their replacement.\n");
83 xbt_cfg_aliases(_sg_cfg_set);
84 printf("Please consider using the recent names\n");
86 } else if (!strcmp(argv[i], "--help-models")) {
89 model_help("host", surf_host_model_description);
91 model_help("CPU", surf_cpu_model_description);
93 model_help("network", surf_network_model_description);
94 printf("\nLong description of all optimization levels accepted by the models of this simulator:\n");
95 for (k = 0; surf_optimization_mode_description[k].name; k++)
97 surf_optimization_mode_description[k].name,
98 surf_optimization_mode_description[k].description);
99 printf("Both network and CPU models have 'Lazy' as default optimization level\n\n");
101 } else if (!strcmp(argv[i], "--help-tracing")) {
116 /* callback of the plugin variable */
117 static void _sg_cfg_cb__plugin(const char *name, int pos)
122 xbt_assert(_sg_cfg_init_status < 2,
123 "Cannot load a plugin after the initialization");
125 val = xbt_cfg_get_string(_sg_cfg_set, name);
127 if (!strcmp(val, "help")) {
128 model_help("plugin", surf_plugin_description);
132 /* New Module missing */
133 int plugin_id = find_model_description(surf_plugin_description, val);
134 surf_plugin_description[plugin_id].model_init_preparse();
137 /* callback of the host/model variable */
138 static void _sg_cfg_cb__host_model(const char *name, int pos)
142 xbt_assert(_sg_cfg_init_status < 2,
143 "Cannot change the model after the initialization");
145 val = xbt_cfg_get_string(_sg_cfg_set, name);
147 if (!strcmp(val, "help")) {
148 model_help("host", surf_host_model_description);
152 /* Make sure that the model exists */
153 find_model_description(surf_host_model_description, val);
156 /* callback of the vm/model variable */
157 static void _sg_cfg_cb__vm_model(const char *name, int pos)
161 xbt_assert(_sg_cfg_init_status < 2,
162 "Cannot change the model after the initialization");
164 val = xbt_cfg_get_string(_sg_cfg_set, name);
166 if (!strcmp(val, "help")) {
167 model_help("vm", surf_vm_model_description);
171 /* Make sure that the model exists */
172 find_model_description(surf_vm_model_description, val);
175 /* callback of the cpu/model variable */
176 static void _sg_cfg_cb__cpu_model(const char *name, int pos)
180 xbt_assert(_sg_cfg_init_status < 2,
181 "Cannot change the model after the initialization");
183 val = xbt_cfg_get_string(_sg_cfg_set, name);
185 if (!strcmp(val, "help")) {
186 model_help("CPU", surf_cpu_model_description);
190 /* New Module missing */
191 find_model_description(surf_cpu_model_description, val);
194 /* callback of the cpu/model variable */
195 static void _sg_cfg_cb__optimization_mode(const char *name, int pos)
199 xbt_assert(_sg_cfg_init_status < 2,
200 "Cannot change the model after the initialization");
202 val = xbt_cfg_get_string(_sg_cfg_set, name);
204 if (!strcmp(val, "help")) {
205 model_help("optimization", surf_optimization_mode_description);
209 /* New Module missing */
210 find_model_description(surf_optimization_mode_description, val);
213 /* callback of the cpu/model variable */
214 static void _sg_cfg_cb__storage_mode(const char *name, int pos)
218 xbt_assert(_sg_cfg_init_status < 2,
219 "Cannot change the model after the initialization");
221 val = xbt_cfg_get_string(_sg_cfg_set, name);
223 if (!strcmp(val, "help")) {
224 model_help("storage", surf_storage_model_description);
228 /* New Module missing */
229 find_model_description(surf_storage_model_description, val);
232 /* callback of the network_model variable */
233 static void _sg_cfg_cb__network_model(const char *name, int pos)
237 xbt_assert(_sg_cfg_init_status < 2,
238 "Cannot change the model after the initialization");
240 val = xbt_cfg_get_string(_sg_cfg_set, name);
242 if (!strcmp(val, "help")) {
243 model_help("network", surf_network_model_description);
247 /* New Module missing */
248 find_model_description(surf_network_model_description, val);
251 /* callbacks of the network models values */
252 static void _sg_cfg_cb__tcp_gamma(const char *name, int pos)
254 sg_tcp_gamma = xbt_cfg_get_double(_sg_cfg_set, name);
257 static void _sg_cfg_cb__maxmin_precision(const char* name, int pos)
259 sg_maxmin_precision = xbt_cfg_get_double(_sg_cfg_set, name);
262 static void _sg_cfg_cb__surf_precision(const char* name, int pos)
264 sg_surf_precision = xbt_cfg_get_double(_sg_cfg_set, name);
267 static void _sg_cfg_cb__sender_gap(const char* name, int pos)
269 sg_sender_gap = xbt_cfg_get_double(_sg_cfg_set, name);
272 static void _sg_cfg_cb__latency_factor(const char *name, int pos)
274 sg_latency_factor = xbt_cfg_get_double(_sg_cfg_set, name);
277 static void _sg_cfg_cb__bandwidth_factor(const char *name, int pos)
279 sg_bandwidth_factor = xbt_cfg_get_double(_sg_cfg_set, name);
282 static void _sg_cfg_cb__weight_S(const char *name, int pos)
284 sg_weight_S_parameter = xbt_cfg_get_double(_sg_cfg_set, name);
288 /* callback of the mpi collectives */
289 static void _sg_cfg_cb__coll(const char *category,
290 s_mpi_coll_description_t * table,
291 const char *name, int pos)
295 xbt_assert(_sg_cfg_init_status < 2,
296 "Cannot change the model after the initialization");
298 val = xbt_cfg_get_string(_sg_cfg_set, name);
300 if (!strcmp(val, "help")) {
301 coll_help(category, table);
305 /* New Module missing */
306 find_coll_description(table, val, category);
308 static void _sg_cfg_cb__coll_gather(const char *name, int pos){
309 _sg_cfg_cb__coll("gather", mpi_coll_gather_description, name, pos);
311 static void _sg_cfg_cb__coll_allgather(const char *name, int pos){
312 _sg_cfg_cb__coll("allgather", mpi_coll_allgather_description, name, pos);
314 static void _sg_cfg_cb__coll_allgatherv(const char *name, int pos){
315 _sg_cfg_cb__coll("allgatherv", mpi_coll_allgatherv_description, name, pos);
317 static void _sg_cfg_cb__coll_allreduce(const char *name, int pos)
319 _sg_cfg_cb__coll("allreduce", mpi_coll_allreduce_description, name, pos);
321 static void _sg_cfg_cb__coll_alltoall(const char *name, int pos)
323 _sg_cfg_cb__coll("alltoall", mpi_coll_alltoall_description, name, pos);
325 static void _sg_cfg_cb__coll_alltoallv(const char *name, int pos)
327 _sg_cfg_cb__coll("alltoallv", mpi_coll_alltoallv_description, name, pos);
329 static void _sg_cfg_cb__coll_bcast(const char *name, int pos)
331 _sg_cfg_cb__coll("bcast", mpi_coll_bcast_description, name, pos);
333 static void _sg_cfg_cb__coll_reduce(const char *name, int pos)
335 _sg_cfg_cb__coll("reduce", mpi_coll_reduce_description, name, pos);
337 static void _sg_cfg_cb__coll_reduce_scatter(const char *name, int pos){
338 _sg_cfg_cb__coll("reduce_scatter", mpi_coll_reduce_scatter_description, name, pos);
340 static void _sg_cfg_cb__coll_scatter(const char *name, int pos){
341 _sg_cfg_cb__coll("scatter", mpi_coll_scatter_description, name, pos);
343 static void _sg_cfg_cb__coll_barrier(const char *name, int pos){
344 _sg_cfg_cb__coll("barrier", mpi_coll_barrier_description, name, pos);
347 static void _sg_cfg_cb__wtime_sleep(const char *name, int pos){
348 smpi_wtime_sleep = xbt_cfg_get_double(_sg_cfg_set, name);
351 static void _sg_cfg_cb__iprobe_sleep(const char *name, int pos){
352 smpi_iprobe_sleep = xbt_cfg_get_double(_sg_cfg_set, name);
355 static void _sg_cfg_cb__test_sleep(const char *name, int pos){
356 smpi_test_sleep = xbt_cfg_get_double(_sg_cfg_set, name);
363 /* callback of the inclusion path */
364 static void _sg_cfg_cb__surf_path(const char *name, int pos)
366 char *path = xbt_strdup(xbt_cfg_get_string_at(_sg_cfg_set, name, pos));
367 xbt_dynar_push(surf_path, &path);
370 /* callback to decide if we want to use the model-checking */
371 #include "src/xbt_modinter.h"
374 extern int _sg_do_model_check; /* this variable lives in xbt_main until I find a right location for it */
375 extern int _sg_do_model_check_record;
378 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);
383 static void _sg_cfg_cb_model_check_record(const char *name, int pos) {
384 _sg_do_model_check_record = xbt_cfg_get_boolean(_sg_cfg_set, name);
388 extern int _sg_do_verbose_exit;
390 static void _sg_cfg_cb_verbose_exit(const char *name, int pos)
392 _sg_do_verbose_exit = xbt_cfg_get_boolean(_sg_cfg_set, name);
395 extern int _sg_do_clean_atexit;
397 static void _sg_cfg_cb_clean_atexit(const char *name, int pos)
399 _sg_do_clean_atexit = xbt_cfg_get_boolean(_sg_cfg_set, name);
402 static void _sg_cfg_cb_context_factory(const char *name, int pos)
404 smx_context_factory_name = xbt_cfg_get_string(_sg_cfg_set, name);
407 static void _sg_cfg_cb_context_stack_size(const char *name, int pos)
409 smx_context_stack_size_was_set = 1;
410 smx_context_stack_size = xbt_cfg_get_int(_sg_cfg_set, name) * 1024;
413 static void _sg_cfg_cb_context_guard_size(const char *name, int pos)
415 smx_context_guard_size_was_set = 1;
416 smx_context_guard_size = xbt_cfg_get_int(_sg_cfg_set, name) * xbt_pagesize;
419 static void _sg_cfg_cb_contexts_nthreads(const char *name, int pos)
421 SIMIX_context_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
424 static void _sg_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
426 SIMIX_context_set_parallel_threshold(xbt_cfg_get_int(_sg_cfg_set, name));
429 static void _sg_cfg_cb_contexts_parallel_mode(const char *name, int pos)
431 const char* mode_name = xbt_cfg_get_string(_sg_cfg_set, name);
432 if (!strcmp(mode_name, "posix")) {
433 SIMIX_context_set_parallel_mode(XBT_PARMAP_POSIX);
435 else if (!strcmp(mode_name, "futex")) {
436 SIMIX_context_set_parallel_mode(XBT_PARMAP_FUTEX);
438 else if (!strcmp(mode_name, "busy_wait")) {
439 SIMIX_context_set_parallel_mode(XBT_PARMAP_BUSY_WAIT);
442 xbt_die("Command line setting of the parallel synchronization mode should "
443 "be one of \"posix\", \"futex\" or \"busy_wait\"");
447 static void _sg_cfg_cb__surf_network_coordinates(const char *name,
450 static int already_set = 0;
451 int val = xbt_cfg_get_boolean(_sg_cfg_set, name);
454 COORD_HOST_LEVEL = sg_host_extension_create(xbt_dynar_free_voidp);
455 COORD_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_dynar_free_voidp);
460 xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
463 static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
466 sg_network_crosstraffic = xbt_cfg_get_boolean(_sg_cfg_set, name);
469 /* build description line with possible values */
470 static void describe_model(char *result,
471 const s_surf_model_description_t model_description[],
473 const char *description)
476 sprintf(result, "%s. Possible values: %s", description,
477 model_description[0].name ? model_description[0].name : "n/a");
479 for (i = 1; model_description[i].name; i++)
480 p += sprintf(p, ", %s", model_description[i].name);
482 ".\n (use 'help' as a value to see the long description of each %s)",
486 /* create the config set, register what should be and parse the command line*/
487 void sg_config_init(int *argc, char **argv)
489 char description[1024];
491 /* Create the configuration support */
492 if (_sg_cfg_init_status == 0) { /* Only create stuff if not already inited */
494 /* Plugins configuration */
495 describe_model(description, surf_plugin_description,
496 "plugin", "The plugins");
497 xbt_cfg_register(&_sg_cfg_set, "plugin", description,
498 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__plugin);
500 describe_model(description, surf_cpu_model_description, "model", "The model to use for the CPU");
501 xbt_cfg_register_string(&_sg_cfg_set, "cpu/model", description, "Cas01", &_sg_cfg_cb__cpu_model);
503 describe_model(description, surf_optimization_mode_description, "optimization mode", "The optimization modes to use for the CPU");
504 xbt_cfg_register_string(&_sg_cfg_set, "cpu/optim", description, "Lazy", &_sg_cfg_cb__optimization_mode);
506 describe_model(description, surf_storage_model_description, "model", "The model to use for the storage");
507 xbt_cfg_register_string(&_sg_cfg_set, "storage/model", description, "default", &_sg_cfg_cb__storage_mode);
509 describe_model(description, surf_network_model_description, "model", "The model to use for the network");
510 xbt_cfg_register_string(&_sg_cfg_set, "network/model", description, "LV08", &_sg_cfg_cb__network_model);
512 describe_model(description, surf_optimization_mode_description, "optimization mode", "The optimization modes to use for the network");
513 xbt_cfg_register_string(&_sg_cfg_set, "network/optim", description, "Lazy", &_sg_cfg_cb__optimization_mode);
515 describe_model(description, surf_host_model_description, "model", "The model to use for the host");
516 xbt_cfg_register_string(&_sg_cfg_set, "host/model", description, "default", &_sg_cfg_cb__host_model);
518 describe_model(description, surf_vm_model_description, "model", "The model to use for the vm");
519 xbt_cfg_register_string(&_sg_cfg_set, "vm/model", description, "default", &_sg_cfg_cb__vm_model);
521 xbt_cfg_register_double(&_sg_cfg_set, "network/TCP_gamma",
522 "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)",
523 4194304.0, _sg_cfg_cb__tcp_gamma);
525 xbt_cfg_register_double(&_sg_cfg_set, "surf/precision", "Numerical precision used when updating simulation times (in seconds)",
526 0.00001, _sg_cfg_cb__surf_precision);
528 xbt_cfg_register_double(&_sg_cfg_set, "maxmin/precision",
529 "Numerical precision used when computing resource sharing (in ops/sec or bytes/sec)",
530 0.00001, _sg_cfg_cb__maxmin_precision);
532 /* The parameters of network models */
534 xbt_cfg_register_double(&_sg_cfg_set, "network/sender_gap", "Minimum gap between two overlapping sends",
535 NAN, _sg_cfg_cb__sender_gap); /* real default for "network/sender_gap" is set in network_smpi.cpp */
536 xbt_cfg_register_double(&_sg_cfg_set, "network/latency_factor",
537 "Correction factor to apply to the provided latency (default value set by network model)",
538 1.0, _sg_cfg_cb__latency_factor);
539 xbt_cfg_register_double(&_sg_cfg_set, "network/bandwidth_factor",
540 "Correction factor to apply to the provided bandwidth (default value set by network model)",
541 1.0, _sg_cfg_cb__bandwidth_factor);
542 xbt_cfg_register_double(&_sg_cfg_set, "network/weight_S",
543 "Correction factor to apply to the weight of competing streams (default value set by network model)",
544 NAN, _sg_cfg_cb__weight_S); /* real default for "network/weight_S" is set in network_*.cpp */
547 xbt_cfg_register(&_sg_cfg_set, "path",
548 "Lookup path for inclusions in platform and deployment XML files",
549 xbt_cfgelm_string, 1, 0, _sg_cfg_cb__surf_path);
551 xbt_cfg_register_boolean(&_sg_cfg_set, "cpu/maxmin_selective_update",
552 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
554 xbt_cfg_register_boolean(&_sg_cfg_set, "network/maxmin_selective_update",
555 "Update the constraint set propagating recursively to others constraints (off by default when optim is set to lazy)",
557 /* Replay (this part is enabled even if MC it disabled) */
558 xbt_cfg_register(&_sg_cfg_set, "model-check/replay",
559 "Enable replay mode with the given path", xbt_cfgelm_string, 0, 1, _sg_cfg_cb_model_check_replay);
562 /* do model-checking-record */
563 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/record", "Record the model-checking paths",
564 "no", _sg_cfg_cb_model_check_record);
566 /* do stateful model-checking */
567 xbt_cfg_register_int(&_sg_cfg_set, "model-check/checkpoint",
568 "Specify the amount of steps between checkpoints during stateful model-checking (default: 0 => stateless verification). "
569 "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.",
570 0, _mc_cfg_cb_checkpoint);
572 /* do stateful model-checking */
573 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/sparse_checkpoint", "Use sparse per-page snapshots.",
574 "no", _mc_cfg_cb_sparse_checkpoint);
576 /* do stateful model-checking */
577 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/soft-dirty", "Use sparse per-page snapshots.",
578 "no", _mc_cfg_cb_soft_dirty);
580 xbt_cfg_register(&_sg_cfg_set, "model-check/ksm",
581 "Kernel same-page merging",
582 xbt_cfgelm_boolean, 1, 1, _mc_cfg_cb_ksm);
583 xbt_cfg_setdefault_boolean(_sg_cfg_set, "model-check/ksm", "no");
585 /* do liveness model-checking */
586 xbt_cfg_register(&_sg_cfg_set, "model-check/property",
587 "Specify the name of the file containing the property. It must be the result of the ltl2ba program.",
588 xbt_cfgelm_string, 1, 1, _mc_cfg_cb_property);
589 xbt_cfg_setdefault_string(_sg_cfg_set, "model-check/property", "");
591 /* do communications determinism model-checking */
592 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/communications_determinism",
593 "Enable/disable the detection of determinism in the communications schemes", "no", _mc_cfg_cb_comms_determinism);
595 /* do send determinism model-checking */
596 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/send_determinism",
597 "Enable/disable the detection of send-determinism in the communications schemes", "no", _mc_cfg_cb_send_determinism);
599 /* Specify the kind of model-checking reduction */
600 xbt_cfg_register_string(&_sg_cfg_set, "model-check/reduction", "Specify the kind of exploration reduction (either none or DPOR)",
601 "dpor", _mc_cfg_cb_reduce);
603 /* Enable/disable timeout for wait requests with model-checking */
604 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/timeout", "Enable/Disable timeout for wait requests", "no",
607 /* Enable/disable global hash computation with model-checking */
608 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/hash", "Enable/Disable state hash for state comparison (experimental)", "no",
611 /* Set max depth exploration */
612 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/snapshot_fds", "Whether file descriptors must be snapshoted (currently unusable)", "no",
613 _mc_cfg_cb_snapshot_fds);
615 /* Set max depth exploration */
616 xbt_cfg_register_int(&_sg_cfg_set, "model-check/max_depth", "Specify the max depth of exploration (default: 1000)", 1000,
617 _mc_cfg_cb_max_depth);
619 /* Set number of visited state stored for state comparison reduction*/
620 xbt_cfg_register_int(&_sg_cfg_set, "model-check/visited",
621 "Specify the number of visited state stored for state comparison reduction. If value=5, the last 5 visited states are stored",
622 0, _mc_cfg_cb_visited);
624 /* Set file name for dot output of graph state */
625 xbt_cfg_register_string(&_sg_cfg_set, "model-check/dot_output",
626 "Specify the name of dot file corresponding to graph state",
627 "", _mc_cfg_cb_dot_output);
629 /* Enable/disable non progressive cycles detection with model-checking */
630 xbt_cfg_register_boolean(&_sg_cfg_set, "model-check/termination",
631 "Enable/Disable non progressive cycle detection",
632 "no", _mc_cfg_cb_termination);
635 /* do verbose-exit */
636 xbt_cfg_register_boolean(&_sg_cfg_set, "verbose-exit", "Activate the \"do nothing\" mode in Ctrl-C",
637 "yes", _sg_cfg_cb_verbose_exit);
639 /* context factory */
640 const char *dflt_ctx_fact = "thread";
642 char *p = description +
644 "Context factory to use in SIMIX. Possible values: %s",
646 #if HAVE_UCONTEXT_CONTEXTS
647 dflt_ctx_fact = "ucontext";
648 p += sprintf(p, ", %s", dflt_ctx_fact);
650 #if HAVE_RAW_CONTEXTS
651 dflt_ctx_fact = "raw";
652 p += sprintf(p, ", %s", dflt_ctx_fact);
656 xbt_cfg_register_string(&_sg_cfg_set, "contexts/factory", description, dflt_ctx_fact, _sg_cfg_cb_context_factory);
658 /* stack size of contexts in KiB */
659 xbt_cfg_register_int(&_sg_cfg_set, "contexts/stack_size", "Stack size of contexts in KiB",
660 8*1024, _sg_cfg_cb_context_stack_size);
661 /* (FIXME: this is unpleasant) Reset this static variable that was altered when setting the default value. */
662 smx_context_stack_size_was_set = 0;
664 /* guard size for contexts stacks in memory pages */
665 xbt_cfg_register(&_sg_cfg_set, "contexts/guard_size",
666 "Guard size for contexts stacks in memory pages",
667 xbt_cfgelm_int, 1, 1, _sg_cfg_cb_context_guard_size);
668 #if defined(_WIN32) || (PTH_STACKGROWTH != -1)
669 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/guard_size", 0);
671 xbt_cfg_setdefault_int(_sg_cfg_set, "contexts/guard_size", 1);
673 /* No, it was not set yet (the above setdefault() changed this to 1). */
674 smx_context_guard_size_was_set = 0;
676 /* number of parallel threads for user processes */
677 xbt_cfg_register_int(&_sg_cfg_set, "contexts/nthreads",
678 "Number of parallel threads used to execute user contexts",
679 1, _sg_cfg_cb_contexts_nthreads);
681 /* minimal number of user contexts to be run in parallel */
682 xbt_cfg_register_int(&_sg_cfg_set, "contexts/parallel_threshold",
683 "Minimal number of user contexts to be run in parallel (raw contexts only)",
684 2, _sg_cfg_cb_contexts_parallel_threshold);
686 /* synchronization mode for parallel user contexts */
687 xbt_cfg_register_string(&_sg_cfg_set, "contexts/synchro",
688 "Synchronization mode to use when running contexts in parallel (either futex, posix or busy_wait)",
690 "futex", _sg_cfg_cb_contexts_parallel_mode);
691 #else //No futex on mac and posix is unimplememted yet
692 "busy_wait", _sg_cfg_cb_contexts_parallel_mode);
695 xbt_cfg_register_boolean(&_sg_cfg_set, "network/coordinates",
696 "\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
697 "no", _sg_cfg_cb__surf_network_coordinates);
699 xbt_cfg_register_boolean(&_sg_cfg_set, "network/crosstraffic",
700 "Activate the interferences between uploads and downloads for fluid max-min models (LV08, CM02)",
701 "yes", _sg_cfg_cb__surf_network_crosstraffic);
704 xbt_cfg_register_string(&_sg_cfg_set, "ns3/TcpModel", "The ns3 tcp model can be : NewReno or Reno or Tahoe", "default", NULL);
707 //For smpi/bw_factor and smpi/lat_factor
708 //Default value have to be "threshold0:value0;threshold1:value1;...;thresholdN:valueN"
709 //test is if( size >= thresholdN ) return valueN;
710 //Values can be modified with command line --cfg=smpi/bw_factor:"threshold0:value0;threshold1:value1;...;thresholdN:valueN"
711 // or with tag config put line <prop id="smpi/bw_factor" value="threshold0:value0;threshold1:value1;...;thresholdN:valueN"></prop>
712 // SMPI model can be used without enable_smpi, so keep this out of the ifdef.
713 xbt_cfg_register_string(&_sg_cfg_set, "smpi/bw_factor", "Bandwidth factors for smpi.",
714 "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", NULL);
716 xbt_cfg_register_string(&_sg_cfg_set, "smpi/lat_factor", "Latency factors for smpi.",
717 "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", NULL);
719 xbt_cfg_register_string(&_sg_cfg_set, "smpi/IB_penalty_factors",
720 "Correction factor to communications using Infiniband model with contention (default value based on Stampede cluster profiling)",
721 "0.965;0.925;1.35", NULL);
724 xbt_cfg_register_double(&_sg_cfg_set, "smpi/running_power",
725 "Power of the host running the simulation (in flop/s). Used to bench the operations.", 20000.0, NULL);
727 xbt_cfg_register_boolean(&_sg_cfg_set, "smpi/display_timing",
728 "Boolean indicating whether we should display the timing after simulation.", "no", NULL);
730 xbt_cfg_register_boolean(&_sg_cfg_set, "smpi/simulate_computation",
731 "Boolean indicating whether the computational part of the simulated application should be simulated.", "yes", NULL);
733 xbt_cfg_register(&_sg_cfg_set, "smpi/use_shared_malloc",
734 "Boolean indicating whether we should use shared memory when using SMPI_SHARED_MALLOC. Allows user to disable it for debug purposes.",
735 xbt_cfgelm_boolean, 1, 1, NULL);
736 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/use_shared_malloc", "yes");
738 xbt_cfg_register(&_sg_cfg_set, "smpi/cpu_threshold",
739 "Minimal computation time (in seconds) not discarded, or -1 for infinity.",
740 xbt_cfgelm_double, 1, 1, NULL);
741 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/cpu_threshold", 1e-6);
743 xbt_cfg_register(&_sg_cfg_set, "smpi/async_small_thresh",
744 "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
745 xbt_cfgelm_int, 1, 1, NULL);
746 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/async_small_thresh", 0);
748 xbt_cfg_register(&_sg_cfg_set, "smpi/send_is_detached_thresh",
749 "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
750 xbt_cfgelm_int, 1, 1, NULL);
751 xbt_cfg_setdefault_int(_sg_cfg_set, "smpi/send_is_detached_thresh", 65536);
753 xbt_cfg_register(&_sg_cfg_set, "smpi/privatize_global_variables",
754 "Boolean indicating whether we should privatize global variable at runtime.",
755 xbt_cfgelm_boolean, 1, 1, NULL);
756 xbt_cfg_setdefault_boolean(_sg_cfg_set, "smpi/privatize_global_variables", "no");
758 xbt_cfg_register(&_sg_cfg_set, "smpi/os",
759 "Small messages timings (MPI_Send minimum time for small messages)",
760 xbt_cfgelm_string, 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, 1, 1, NULL);
766 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/ois", "1:0:0:0:0");
768 xbt_cfg_register(&_sg_cfg_set, "smpi/or",
769 "Small messages timings (MPI_Recv minimum time for small messages)",
770 xbt_cfgelm_string, 1, 1, NULL);
771 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/or", "1:0:0:0:0");
773 xbt_cfg_register(&_sg_cfg_set, "smpi/iprobe",
774 "Minimum time to inject inside a call to MPI_Iprobe",
775 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__iprobe_sleep);
776 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/iprobe", 1e-4);
778 xbt_cfg_register(&_sg_cfg_set, "smpi/test",
779 "Minimum time to inject inside a call to MPI_Test",
780 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__test_sleep);
781 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/test", 1e-4);
783 xbt_cfg_register(&_sg_cfg_set, "smpi/wtime",
784 "Minimum time to inject inside a call to MPI_Wtime",
785 xbt_cfgelm_double, 1, 1, _sg_cfg_cb__wtime_sleep);
786 xbt_cfg_setdefault_double(_sg_cfg_set, "smpi/wtime", 0.0);
788 xbt_cfg_register(&_sg_cfg_set, "smpi/coll_selector",
789 "Which collective selector to use",
790 xbt_cfgelm_string, 1, 1, NULL);
791 xbt_cfg_setdefault_string(_sg_cfg_set, "smpi/coll_selector", "default");
793 xbt_cfg_register(&_sg_cfg_set, "smpi/gather",
794 "Which collective to use for gather",
795 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_gather);
797 xbt_cfg_register(&_sg_cfg_set, "smpi/allgather",
798 "Which collective to use for allgather",
799 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allgather);
801 xbt_cfg_register(&_sg_cfg_set, "smpi/barrier",
802 "Which collective to use for barrier",
803 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_barrier);
805 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce_scatter",
806 "Which collective to use for reduce_scatter",
807 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_reduce_scatter);
809 xbt_cfg_register(&_sg_cfg_set, "smpi/scatter",
810 "Which collective to use for scatter",
811 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_scatter);
813 xbt_cfg_register(&_sg_cfg_set, "smpi/allgatherv",
814 "Which collective to use for allgatherv",
815 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allgatherv);
817 xbt_cfg_register(&_sg_cfg_set, "smpi/allreduce",
818 "Which collective to use for allreduce",
819 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_allreduce);
821 xbt_cfg_register(&_sg_cfg_set, "smpi/alltoall",
822 "Which collective to use for alltoall",
823 xbt_cfgelm_string, 0, 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, 0, 1, &_sg_cfg_cb__coll_alltoallv);
829 xbt_cfg_register(&_sg_cfg_set, "smpi/bcast",
830 "Which collective to use for bcast",
831 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_bcast);
833 xbt_cfg_register(&_sg_cfg_set, "smpi/reduce",
834 "Which collective to use for reduce",
835 xbt_cfgelm_string, 0, 1, &_sg_cfg_cb__coll_reduce);
838 xbt_cfg_register(&_sg_cfg_set, "exception/cutpath",
839 "\"yes\" or \"no\". \"yes\" will cut all path information from call traces, used e.g. in exceptions.",
840 xbt_cfgelm_boolean, 1, 1, NULL);
841 xbt_cfg_setdefault_boolean(_sg_cfg_set, "exception/cutpath", "no");
843 xbt_cfg_register(&_sg_cfg_set, "clean_atexit",
844 "\"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.",
845 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_clean_atexit);
846 xbt_cfg_setdefault_boolean(_sg_cfg_set, "clean_atexit", "yes");
849 /* retrieves the current directory of the current process */
850 const char *initial_path = __surf_get_initial_path();
851 xbt_assert((initial_path), "__surf_get_initial_path() failed! Can't resolve current Windows directory");
853 surf_path = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
854 xbt_cfg_setdefault_string(_sg_cfg_set, "path", initial_path);
857 xbt_cfg_check(_sg_cfg_set);
858 _sg_cfg_init_status = 1;
860 sg_config_cmd_line(argc, argv);
862 xbt_mallocator_initialization_is_done(SIMIX_context_is_parallel());
864 XBT_WARN("Call to sg_config_init() after initialization ignored");
868 void sg_config_finalize(void)
870 if (!_sg_cfg_init_status)
871 return; /* Not initialized yet. Nothing to do */
873 xbt_cfg_free(&_sg_cfg_set);
874 _sg_cfg_init_status = 0;
877 int sg_cfg_is_default_value(const char *name)
879 return xbt_cfg_is_default_value(_sg_cfg_set, name);
882 int sg_cfg_get_int(const char* name)
884 return xbt_cfg_get_int(_sg_cfg_set, name);
887 double sg_cfg_get_double(const char* name)
889 return xbt_cfg_get_double(_sg_cfg_set, name);
892 char* sg_cfg_get_string(const char* name)
894 return xbt_cfg_get_string(_sg_cfg_set, name);
897 int sg_cfg_get_boolean(const char* name)
899 return xbt_cfg_get_boolean(_sg_cfg_set, name);
902 xbt_dynar_t sg_cfg_get_dynar(const char* name)
904 return xbt_cfg_get_dynar(_sg_cfg_set, name);