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},
119 "Realistic network model with lmm_solve and no correction factors",
120 NULL, surf_network_model_init_CM02},
122 "Realistic network model with lmm_solve and these correction factors: latency*=10.4, bandwidth*=.92, S=8775",
123 NULL, surf_network_model_init_LegrandVelho},
125 "Realistic network model with lmm_solve and correction factors on three intervals (< 1KiB, < 64 KiB, >= 64 KiB)",
126 NULL, surf_network_model_init_SMPI},
129 "Network Pseudo-model using the GTNets simulator instead of an analytic model",
130 NULL, surf_network_model_init_GTNETS},
133 "Model using lagrange_solve instead of lmm_solve (experts only)", NULL,
134 surf_network_model_init_Reno},
136 "Model using lagrange_solve instead of lmm_solve (experts only)", NULL,
137 surf_network_model_init_Reno2},
139 "Model using lagrange_solve instead of lmm_solve (experts only)", NULL,
140 surf_network_model_init_Vegas},
141 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
144 s_surf_model_description_t surf_cpu_model_description[] = {
145 {"Cas01_fullupdate", "CPU classical model time=size/power", NULL,
146 surf_cpu_model_init_Cas01},
148 "Variation of Cas01_fullupdate with partial invalidation optimization of lmm system. Should produce the same values, only faster",
149 NULL, surf_cpu_model_init_Cas01_im},
151 "Variation of Cas01 with also trace integration. Should produce the same values, only faster if you use availability traces",
152 NULL, surf_cpu_model_init_ti},
153 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
156 s_surf_model_description_t surf_workstation_model_description[] = {
158 "Default workstation model, using LV08 and CM02 as network and CPU",
159 NULL, surf_workstation_model_init_CLM03, create_workstations},
161 "Workstation model allowing you to use other network and CPU models",
162 NULL, surf_workstation_model_init_compound, create_workstations},
163 {"ptask_L07", "Workstation model with better parallel task modeling",
164 NULL, surf_workstation_model_init_ptask_L07, NULL},
165 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
168 void update_model_description(s_surf_model_description_t * table,
169 const char *name, surf_model_t model)
171 int i = find_model_description(table, name);
172 table[i].model = model;
175 /** Displays the long description of all registered models, and quit */
176 void model_help(const char *category, s_surf_model_description_t * table)
179 printf("Long description of the %s models accepted by this simulator:\n",
181 for (i = 0; table[i].name; i++)
182 printf(" %s: %s\n", table[i].name, table[i].description);
185 int find_model_description(s_surf_model_description_t * table,
189 char *name_list = NULL;
191 for (i = 0; table[i].name; i++)
192 if (!strcmp(name, table[i].name)) {
195 name_list = strdup(table[0].name);
196 for (i = 1; table[i].name; i++) {
198 xbt_realloc(name_list,
199 strlen(name_list) + strlen(table[i].name) + 2);
200 strcat(name_list, ", ");
201 strcat(name_list, table[i].name);
203 xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.", name,
207 double generic_maxmin_share_resources(xbt_swag_t running_actions,
210 void (*solve) (lmm_system_t))
212 surf_action_t action = NULL;
215 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
217 xbt_assert0(solve, "Give me a real solver function!");
220 xbt_swag_foreach(action, running_actions) {
221 value = lmm_variable_getvalue(VARIABLE(action));
222 if ((value > 0) || (action->max_duration >= 0))
230 if (action->remains > 0)
231 min = action->remains / value;
234 if ((action->max_duration >= 0) && (action->max_duration < min))
235 min = action->max_duration;
237 min = action->max_duration;
240 for (action = xbt_swag_getNext(action, running_actions->offset);
242 action = xbt_swag_getNext(action, running_actions->offset)) {
243 value = lmm_variable_getvalue(VARIABLE(action));
245 if (action->remains > 0)
246 value = action->remains / value;
251 DEBUG2("Updating min (value) with %p: %f", action, min);
254 if ((action->max_duration >= 0) && (action->max_duration < min)) {
255 min = action->max_duration;
256 DEBUG2("Updating min (duration) with %p: %f", action, min);
259 DEBUG1("min value : %f", min);
265 XBT_LOG_EXTERNAL_CATEGORY(surf_cpu);
266 XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
267 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange);
268 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange_dichotomy);
269 XBT_LOG_EXTERNAL_CATEGORY(surf_maxmin);
270 XBT_LOG_EXTERNAL_CATEGORY(surf_network);
271 XBT_LOG_EXTERNAL_CATEGORY(surf_trace);
272 XBT_LOG_EXTERNAL_CATEGORY(surf_parse);
273 XBT_LOG_EXTERNAL_CATEGORY(surf_timer);
274 XBT_LOG_EXTERNAL_CATEGORY(surf_workstation);
275 XBT_LOG_EXTERNAL_CATEGORY(surf_config);
276 XBT_LOG_EXTERNAL_CATEGORY(surf_route);
279 XBT_LOG_EXTERNAL_CATEGORY(surf_network_gtnets);
282 void surf_init(int *argc, char **argv)
284 /* Connect our log channels: that must be done manually under windows */
285 XBT_LOG_CONNECT(surf_cpu, surf);
286 XBT_LOG_CONNECT(surf_kernel, surf);
287 XBT_LOG_CONNECT(surf_lagrange, surf);
288 XBT_LOG_CONNECT(surf_lagrange_dichotomy, surf_lagrange);
289 XBT_LOG_CONNECT(surf_maxmin, surf);
290 XBT_LOG_CONNECT(surf_network, surf);
291 XBT_LOG_CONNECT(surf_trace, surf);
292 XBT_LOG_CONNECT(surf_parse, surf);
293 XBT_LOG_CONNECT(surf_timer, surf);
294 XBT_LOG_CONNECT(surf_workstation, surf);
295 XBT_LOG_CONNECT(surf_config, surf);
296 XBT_LOG_CONNECT(surf_route, surf);
299 XBT_LOG_CONNECT(surf_network_gtnets, surf);
302 xbt_init(argc, argv);
304 model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
306 history = tmgr_history_new();
308 surf_config_init(argc, argv);
314 # define FILE_DELIM "\\"
316 # define FILE_DELIM "/" /* FIXME: move to better location */
319 FILE *surf_fopen(const char *name, const char *mode)
322 char *path_elm = NULL;
328 if (__surf_is_absolute_file_path(name)) /* don't mess with absolute file names */
329 return fopen(name, mode);
331 /* search relative files in the path */
332 xbt_dynar_foreach(surf_path, cpt, path_elm) {
333 buff = bprintf("%s" FILE_DELIM "%s", path_elm, name);
334 file = fopen(buff, mode);
346 surf_model_t model = NULL;
348 surf_config_finalize();
350 xbt_dynar_foreach(model_list, iter, model)
351 model->model_private->finalize();
352 xbt_dynar_free(&model_list);
355 lmm_system_free(maxmin_system);
356 maxmin_system = NULL;
359 tmgr_history_free(history);
364 xbt_dynar_free(&surf_path);
367 surf_parse_lex_destroy();
368 surf_parse_free_callbacks();
369 NOW = 0; /* Just in case the user plans to restart the simulation afterward */
372 void surf_presolve(void)
374 double next_event_date = -1.0;
375 tmgr_trace_event_t event = NULL;
377 surf_resource_t resource = NULL;
378 surf_model_t model = NULL;
382 ("First Run! Let's \"purge\" events and put models in the right state");
383 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
384 if (next_event_date > NOW)
387 tmgr_history_get_next_event_leq(history, next_event_date,
389 (void **) &resource))) {
390 resource->model->model_private->update_resource_state(resource,
395 xbt_dynar_foreach(model_list, iter, model)
396 model->model_private->update_actions_state(NOW, 0.0);
399 double surf_solve(double max_date)
401 double min = -1.0; /* duration */
402 double next_event_date = -1.0;
403 double model_next_action_end = -1.0;
405 surf_resource_t resource = NULL;
406 surf_model_t model = NULL;
407 tmgr_trace_event_t event = NULL;
410 if (max_date != -1.0 && max_date != NOW) {
411 min = max_date - NOW;
414 DEBUG0("Looking for next action end");
415 xbt_dynar_foreach(model_list, iter, model) {
416 DEBUG1("Running for Resource [%s]", model->name);
417 model_next_action_end = model->model_private->share_resources(NOW);
418 DEBUG2("Resource [%s] : next action end = %f",
419 model->name, model_next_action_end);
420 if (((min < 0.0) || (model_next_action_end < min))
421 && (model_next_action_end >= 0.0))
422 min = model_next_action_end;
424 DEBUG1("Next action end : %f", min);
426 DEBUG0("Looking for next event");
427 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
428 DEBUG1("Next TRACE event : %f", next_event_date);
429 if ((min != -1.0) && (next_event_date > NOW + min))
431 DEBUG0("Updating models");
433 tmgr_history_get_next_event_leq(history, next_event_date,
435 (void **) &resource))) {
436 if (resource->model->model_private->resource_used(resource)) {
437 min = next_event_date - NOW;
439 ("This event will modify model state. Next event set to %f",
442 /* update state of model_obj according to new value. Does not touch lmm.
443 It will be modified if needed when updating actions */
444 DEBUG2("Calling update_resource_state for resource %s with min %lf",
445 resource->model->name, min);
446 resource->model->model_private->update_resource_state(resource,
453 /* FIXME: Moved this test to here to avoid stoping simulation if there are actions running on cpus and all cpus are with availability = 0.
454 * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
455 * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
459 DEBUG1("Duration set to %f", min);
463 xbt_dynar_foreach(model_list, iter, model)
464 model->model_private->update_actions_state(NOW, min);
469 XBT_INLINE double surf_get_clock(void)