1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 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. */
9 #include "surf_private.h"
10 #include "xbt/module.h"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
14 "Logging specific to SURF (kernel)");
16 /* Additional declarations for Windows potability. */
24 static const char *disk_drives_letter_table[MAX_DRIVE] = {
52 #endif /* #ifdef _XBT_WIN32 */
55 * Returns the initial path. On Windows the initial path is
56 * the current directory for the current process in the other
57 * case the function returns "./" that represents the current
58 * directory on Unix/Linux platforms.
61 const char *__surf_get_initial_path(void)
66 char current_directory[MAX_PATH + 1] = { 0 };
67 unsigned int len = GetCurrentDirectory(MAX_PATH + 1, current_directory);
73 strncpy(root, current_directory, 3);
75 for (i = 0; i < MAX_DRIVE; i++) {
76 if (toupper(root[0]) == disk_drives_letter_table[i][0])
77 return disk_drives_letter_table[i];
86 /* The __surf_is_absolute_file_path() returns 1 if
87 * file_path is a absolute file path, in the other
88 * case the function returns 0.
90 int __surf_is_absolute_file_path(const char *file_path)
93 WIN32_FIND_DATA wfd = { 0 };
94 HANDLE hFile = FindFirstFile(file_path, &wfd);
96 if (INVALID_HANDLE_VALUE == hFile)
102 return (file_path[0] == '/');
108 xbt_dynar_t model_list = NULL;
109 tmgr_history_t history = NULL;
110 lmm_system_t maxmin_system = NULL;
111 xbt_dynar_t surf_path = NULL;
113 /* Don't forget to update the option description in smx_config when you change this */
114 s_surf_model_description_t surf_network_model_description[] = {
116 "Simplistic network model where all communication take a constant time (one second)",
117 NULL, surf_network_model_init_Constant},
118 {"Vivaldi", "Scalable network model using the Vivaldi coordinate ideas",
119 NULL, surf_network_model_init_Vivaldi},
121 "Realistic network model with lmm_solve and no correction factors",
122 NULL, surf_network_model_init_CM02},
124 "Realistic network model with lmm_solve and these correction factors: latency*=10.4, bandwidth*=.92, S=8775",
125 NULL, surf_network_model_init_LegrandVelho},
127 "Realistic network model with lmm_solve and correction factors on three intervals (< 1KiB, < 64 KiB, >= 64 KiB)",
128 NULL, surf_network_model_init_SMPI},
131 "Network Pseudo-model using the GTNets simulator instead of an analytic model",
132 NULL, surf_network_model_init_GTNETS},
135 "Model using lagrange_solve instead of lmm_solve (experts only)", NULL,
136 surf_network_model_init_Reno},
138 "Model using lagrange_solve instead of lmm_solve (experts only)", NULL,
139 surf_network_model_init_Reno2},
141 "Model using lagrange_solve instead of lmm_solve (experts only)", NULL,
142 surf_network_model_init_Vegas},
143 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
146 s_surf_model_description_t surf_cpu_model_description[] = {
147 {"Cas01_fullupdate", "CPU classical model time=size/power", NULL,
148 surf_cpu_model_init_Cas01},
150 "Variation of Cas01_fullupdate with partial invalidation optimization of lmm system. Should produce the same values, only faster",
151 NULL, surf_cpu_model_init_Cas01_im},
153 "Variation of Cas01 with also trace integration. Should produce the same values, only faster if you use availability traces",
154 NULL, surf_cpu_model_init_ti},
155 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
158 s_surf_model_description_t surf_workstation_model_description[] = {
160 "Default workstation model, using LV08 and CM02 as network and CPU",
161 NULL, surf_workstation_model_init_CLM03, create_workstations},
163 "Workstation model allowing you to use other network and CPU models",
164 NULL, surf_workstation_model_init_compound, create_workstations},
165 {"ptask_L07", "Workstation model with better parallel task modeling",
166 NULL, surf_workstation_model_init_ptask_L07, NULL},
167 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
170 void update_model_description(s_surf_model_description_t * table,
171 const char *name, surf_model_t model)
173 int i = find_model_description(table, name);
174 table[i].model = model;
177 /** Displays the long description of all registered models, and quit */
178 void model_help(const char *category, s_surf_model_description_t * table)
181 printf("Long description of the %s models accepted by this simulator:\n",
183 for (i = 0; table[i].name; i++)
184 printf(" %s: %s\n", table[i].name, table[i].description);
187 int find_model_description(s_surf_model_description_t * table,
191 char *name_list = NULL;
193 for (i = 0; table[i].name; i++)
194 if (!strcmp(name, table[i].name)) {
197 name_list = strdup(table[0].name);
198 for (i = 1; table[i].name; i++) {
200 xbt_realloc(name_list,
201 strlen(name_list) + strlen(table[i].name) + 2);
202 strcat(name_list, ", ");
203 strcat(name_list, table[i].name);
205 xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.", name,
209 double generic_maxmin_share_resources(xbt_swag_t running_actions,
212 void (*solve) (lmm_system_t))
214 surf_action_t action = NULL;
217 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
219 xbt_assert0(solve, "Give me a real solver function!");
222 xbt_swag_foreach(action, running_actions) {
223 value = lmm_variable_getvalue(VARIABLE(action));
224 if ((value > 0) || (action->max_duration >= 0))
232 if (action->remains > 0)
233 min = action->remains / value;
236 if ((action->max_duration >= 0) && (action->max_duration < min))
237 min = action->max_duration;
239 min = action->max_duration;
242 for (action = xbt_swag_getNext(action, running_actions->offset);
244 action = xbt_swag_getNext(action, running_actions->offset)) {
245 value = lmm_variable_getvalue(VARIABLE(action));
247 if (action->remains > 0)
248 value = action->remains / value;
253 DEBUG2("Updating min (value) with %p: %f", action, min);
256 if ((action->max_duration >= 0) && (action->max_duration < min)) {
257 min = action->max_duration;
258 DEBUG2("Updating min (duration) with %p: %f", action, min);
261 DEBUG1("min value : %f", min);
267 XBT_LOG_EXTERNAL_CATEGORY(surf_cpu);
268 XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
269 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange);
270 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange_dichotomy);
271 XBT_LOG_EXTERNAL_CATEGORY(surf_maxmin);
272 XBT_LOG_EXTERNAL_CATEGORY(surf_network);
273 XBT_LOG_EXTERNAL_CATEGORY(surf_trace);
274 XBT_LOG_EXTERNAL_CATEGORY(surf_parse);
275 XBT_LOG_EXTERNAL_CATEGORY(surf_timer);
276 XBT_LOG_EXTERNAL_CATEGORY(surf_workstation);
277 XBT_LOG_EXTERNAL_CATEGORY(surf_config);
278 XBT_LOG_EXTERNAL_CATEGORY(surf_route);
281 XBT_LOG_EXTERNAL_CATEGORY(surf_network_gtnets);
284 void surf_init(int *argc, char **argv)
286 /* Connect our log channels: that must be done manually under windows */
287 XBT_LOG_CONNECT(surf_cpu, surf);
288 XBT_LOG_CONNECT(surf_kernel, surf);
289 XBT_LOG_CONNECT(surf_lagrange, surf);
290 XBT_LOG_CONNECT(surf_lagrange_dichotomy, surf_lagrange);
291 XBT_LOG_CONNECT(surf_maxmin, surf);
292 XBT_LOG_CONNECT(surf_network, surf);
293 XBT_LOG_CONNECT(surf_trace, surf);
294 XBT_LOG_CONNECT(surf_parse, surf);
295 XBT_LOG_CONNECT(surf_timer, surf);
296 XBT_LOG_CONNECT(surf_workstation, surf);
297 XBT_LOG_CONNECT(surf_config, surf);
298 XBT_LOG_CONNECT(surf_route, surf);
301 XBT_LOG_CONNECT(surf_network_gtnets, surf);
304 xbt_init(argc, argv);
306 model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
308 history = tmgr_history_new();
310 surf_config_init(argc, argv);
312 if (_surf_do_model_check)
318 # define FILE_DELIM "\\"
320 # define FILE_DELIM "/" /* FIXME: move to better location */
323 FILE *surf_fopen(const char *name, const char *mode)
326 char *path_elm = NULL;
332 if (__surf_is_absolute_file_path(name)) /* don't mess with absolute file names */
333 return fopen(name, mode);
335 /* search relative files in the path */
336 xbt_dynar_foreach(surf_path, cpt, path_elm) {
337 buff = bprintf("%s" FILE_DELIM "%s", path_elm, name);
338 file = fopen(buff, mode);
350 surf_model_t model = NULL;
352 surf_config_finalize();
354 xbt_dynar_foreach(model_list, iter, model)
355 model->model_private->finalize();
356 xbt_dynar_free(&model_list);
359 lmm_system_free(maxmin_system);
360 maxmin_system = NULL;
363 tmgr_history_free(history);
368 xbt_dynar_free(&surf_path);
371 surf_parse_lex_destroy();
372 surf_parse_free_callbacks();
373 NOW = 0; /* Just in case the user plans to restart the simulation afterward */
376 void surf_presolve(void)
378 double next_event_date = -1.0;
379 tmgr_trace_event_t event = NULL;
381 surf_resource_t resource = NULL;
382 surf_model_t model = NULL;
386 ("First Run! Let's \"purge\" events and put models in the right state");
387 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
388 if (next_event_date > NOW)
391 tmgr_history_get_next_event_leq(history, next_event_date,
393 (void **) &resource))) {
394 resource->model->model_private->update_resource_state(resource,
399 xbt_dynar_foreach(model_list, iter, model)
400 model->model_private->update_actions_state(NOW, 0.0);
403 double surf_solve(void)
406 double next_event_date = -1.0;
407 double model_next_action_end = -1.0;
409 surf_resource_t resource = NULL;
410 surf_model_t model = NULL;
411 tmgr_trace_event_t event = NULL;
416 DEBUG0("Looking for next action end");
417 xbt_dynar_foreach(model_list, iter, model) {
418 DEBUG1("Running for Resource [%s]", model->name);
419 model_next_action_end = model->model_private->share_resources(NOW);
420 DEBUG2("Resource [%s] : next action end = %f",
421 model->name, model_next_action_end);
422 if (((min < 0.0) || (model_next_action_end < min))
423 && (model_next_action_end >= 0.0))
424 min = model_next_action_end;
426 DEBUG1("Next action end : %f", min);
428 DEBUG0("Looking for next event");
429 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
430 DEBUG1("Next TRACE event : %f", next_event_date);
431 if ((min != -1.0) && (next_event_date > NOW + min))
433 DEBUG0("Updating models");
435 tmgr_history_get_next_event_leq(history, next_event_date,
437 (void **) &resource))) {
438 if (resource->model->model_private->resource_used(resource)) {
439 min = next_event_date - NOW;
441 ("This event will modify model state. Next event set to %f",
444 /* update state of model_obj according to new value. Does not touch lmm.
445 It will be modified if needed when updating actions */
446 DEBUG2("Calling update_resource_state for resource %s with min %lf",
447 resource->model->name, min);
448 resource->model->model_private->update_resource_state(resource,
454 /* FIXME: Moved this test to here to avoid stoping simulation if there are actions running on cpus and all cpus are with availability = 0.
455 * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
456 * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
460 DEBUG1("Duration set to %f", min);
464 xbt_dynar_foreach(model_list, iter, model)
465 model->model_private->update_actions_state(NOW, min);
470 double surf_get_clock(void)