1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011. 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"
12 #include "surf/surf_resource.h"
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
15 "Logging specific to SURF (kernel)");
17 /* Additional declarations for Windows potability. */
25 static const char *disk_drives_letter_table[MAX_DRIVE] = {
53 #endif /* #ifdef _XBT_WIN32 */
56 * Returns the initial path. On Windows the initial path is
57 * the current directory for the current process in the other
58 * case the function returns "./" that represents the current
59 * directory on Unix/Linux platforms.
62 const char *__surf_get_initial_path(void)
67 char current_directory[MAX_PATH + 1] = { 0 };
68 unsigned int len = GetCurrentDirectory(MAX_PATH + 1, current_directory);
74 strncpy(root, current_directory, 3);
76 for (i = 0; i < MAX_DRIVE; i++) {
77 if (toupper(root[0]) == disk_drives_letter_table[i][0])
78 return disk_drives_letter_table[i];
87 /* The __surf_is_absolute_file_path() returns 1 if
88 * file_path is a absolute file path, in the other
89 * case the function returns 0.
91 int __surf_is_absolute_file_path(const char *file_path)
94 WIN32_FIND_DATA wfd = { 0 };
95 HANDLE hFile = FindFirstFile(file_path, &wfd);
97 if (INVALID_HANDLE_VALUE == hFile)
103 return (file_path[0] == '/');
109 xbt_dynar_t model_list = NULL;
110 tmgr_history_t history = NULL;
111 lmm_system_t maxmin_system = NULL;
112 xbt_dynar_t surf_path = NULL;
114 /* Don't forget to update the option description in smx_config when you change this */
115 s_surf_model_description_t surf_network_model_description[] = {
117 "Simplistic network model where all communication take a constant time (one second)",
118 surf_network_model_init_Constant},
120 "Realistic network model with lmm_solve and no correction factors",
121 surf_network_model_init_CM02},
123 "Realistic network model with lmm_solve, adequate correction factors (latency*=10.4, bandwidth*=.92, S=8775) and partial invalidation optimization",
124 im_surf_network_model_init_LegrandVelho},
126 "Realistic network model wit lmm_solve, adequate correction factors (latency*=10.4, bandwidth*=.92, S=8775) but no further optimization. Should produce the same results as LV08, only slower.",
127 surf_network_model_init_LegrandVelho},
129 "Realistic network model with lmm_solve and correction factors on three intervals (< 1KiB, < 64 KiB, >= 64 KiB)",
130 surf_network_model_init_SMPI},
133 "Network Pseudo-model using the GTNets simulator instead of an analytic model",
134 surf_network_model_init_GTNETS},
139 surf_network_model_init_NS3},
142 "Model using lagrange_solve instead of lmm_solve (experts only)",
143 surf_network_model_init_Reno},
145 "Model using lagrange_solve instead of lmm_solve (experts only)",
146 surf_network_model_init_Reno2},
148 "Model using lagrange_solve instead of lmm_solve (experts only)",
149 surf_network_model_init_Vegas},
150 {NULL, NULL, NULL} /* this array must be NULL terminated */
153 s_surf_model_description_t surf_cpu_model_description[] = {
154 {"Cas01_fullupdate", "CPU classical model time=size/power",
155 surf_cpu_model_init_Cas01},
157 "Variation of Cas01_fullupdate with partial invalidation optimization of lmm system. Should produce the same values, only faster",
158 surf_cpu_model_init_Cas01_im},
160 "Variation of Cas01 with also trace integration. Should produce the same values, only faster if you use availability traces",
161 surf_cpu_model_init_ti},
162 {NULL, NULL, NULL} /* this array must be NULL terminated */
165 s_surf_model_description_t surf_workstation_model_description[] = {
167 "Default workstation model, using LV08 and CM02 as network and CPU",
168 surf_workstation_model_init_CLM03},
170 "Workstation model allowing you to use other network and CPU models",
171 surf_workstation_model_init_compound},
172 {"ptask_L07", "Workstation model with better parallel task modeling",
173 surf_workstation_model_init_ptask_L07},
174 {NULL, NULL, NULL} /* this array must be NULL terminated */
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) + 3);
202 strcat(name_list, ", ");
203 strcat(name_list, table[i].name);
205 xbt_die("Model '%s' is invalid! Valid models are: %s.", name, name_list);
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))))
221 xbt_swag_foreach(action, running_actions) {
222 value = lmm_variable_getvalue(VARIABLE(action));
223 if ((value > 0) || (action->max_duration >= 0))
231 if (action->remains > 0)
232 min = action->remains / value;
235 if ((action->max_duration >= 0) && (action->max_duration < min))
236 min = action->max_duration;
238 min = action->max_duration;
241 for (action = xbt_swag_getNext(action, running_actions->offset);
243 action = xbt_swag_getNext(action, running_actions->offset)) {
244 value = lmm_variable_getvalue(VARIABLE(action));
246 if (action->remains > 0)
247 value = action->remains / value;
252 XBT_DEBUG("Updating min (value) with %p: %f", action, min);
255 if ((action->max_duration >= 0) && (action->max_duration < min)) {
256 min = action->max_duration;
257 XBT_DEBUG("Updating min (duration) with %p: %f", action, min);
260 XBT_DEBUG("min value : %f", min);
266 XBT_LOG_EXTERNAL_CATEGORY(surf_cpu);
267 XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
268 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange);
269 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange_dichotomy);
270 XBT_LOG_EXTERNAL_CATEGORY(surf_maxmin);
271 XBT_LOG_EXTERNAL_CATEGORY(surf_network);
272 XBT_LOG_EXTERNAL_CATEGORY(surf_trace);
273 XBT_LOG_EXTERNAL_CATEGORY(surf_parse);
274 XBT_LOG_EXTERNAL_CATEGORY(surf_timer);
275 XBT_LOG_EXTERNAL_CATEGORY(surf_workstation);
276 XBT_LOG_EXTERNAL_CATEGORY(surf_config);
277 XBT_LOG_EXTERNAL_CATEGORY(surf_route);
280 XBT_LOG_EXTERNAL_CATEGORY(surf_network_gtnets);
283 void surf_init(int *argc, char **argv)
285 XBT_DEBUG("Create all Libs");
286 host_lib = xbt_lib_new();
287 link_lib = xbt_lib_new();
288 as_router_lib = xbt_lib_new();
290 XBT_DEBUG("ADD ROUTING LEVEL");
291 ROUTING_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_free);
292 ROUTING_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_free);
294 XBT_DEBUG("ADD SURF LEVELS");
295 SURF_CPU_LEVEL = xbt_lib_add_level(host_lib,surf_resource_free);
296 SURF_WKS_LEVEL = xbt_lib_add_level(host_lib,surf_resource_free);
297 SURF_LINK_LEVEL = xbt_lib_add_level(link_lib,surf_resource_free);
299 /* Connect our log channels: that must be done manually under windows */
300 XBT_LOG_CONNECT(surf_cpu, surf);
301 XBT_LOG_CONNECT(surf_kernel, surf);
302 XBT_LOG_CONNECT(surf_lagrange, surf);
303 XBT_LOG_CONNECT(surf_lagrange_dichotomy, surf_lagrange);
304 XBT_LOG_CONNECT(surf_maxmin, surf);
305 XBT_LOG_CONNECT(surf_network, surf);
306 XBT_LOG_CONNECT(surf_trace, surf);
307 XBT_LOG_CONNECT(surf_parse, surf);
308 XBT_LOG_CONNECT(surf_timer, surf);
309 XBT_LOG_CONNECT(surf_workstation, surf);
310 XBT_LOG_CONNECT(surf_config, surf);
311 XBT_LOG_CONNECT(surf_route, surf);
314 XBT_LOG_CONNECT(surf_network_gtnets, surf);
317 xbt_init(argc, argv);
319 model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
321 history = tmgr_history_new();
323 surf_config_init(argc, argv);
330 # define FILE_DELIM "\\"
332 # define FILE_DELIM "/" /* FIXME: move to better location */
335 FILE *surf_fopen(const char *name, const char *mode)
338 char *path_elm = NULL;
344 if (__surf_is_absolute_file_path(name)) /* don't mess with absolute file names */
345 return fopen(name, mode);
347 /* search relative files in the path */
348 xbt_dynar_foreach(surf_path, cpt, path_elm) {
349 buff = bprintf("%s" FILE_DELIM "%s", path_elm, name);
350 file = fopen(buff, mode);
362 surf_model_t model = NULL;
364 surf_config_finalize();
366 xbt_dynar_foreach(model_list, iter, model)
367 model->model_private->finalize();
368 xbt_dynar_free(&model_list);
372 lmm_system_free(maxmin_system);
373 maxmin_system = NULL;
376 tmgr_history_free(history);
381 xbt_dynar_free(&surf_path);
383 xbt_lib_free(&host_lib);
384 xbt_lib_free(&link_lib);
385 xbt_lib_free(&as_router_lib);
389 surf_parse_lex_destroy();
390 surf_parse_free_callbacks();
392 NOW = 0; /* Just in case the user plans to restart the simulation afterward */
395 void surf_presolve(void)
397 double next_event_date = -1.0;
398 tmgr_trace_event_t event = NULL;
400 surf_resource_t resource = NULL;
401 surf_model_t model = NULL;
405 ("First Run! Let's \"purge\" events and put models in the right state");
406 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
407 if (next_event_date > NOW)
410 tmgr_history_get_next_event_leq(history, next_event_date,
412 (void **) &resource))) {
413 resource->model->model_private->update_resource_state(resource,
418 xbt_dynar_foreach(model_list, iter, model)
419 model->model_private->update_actions_state(NOW, 0.0);
422 double surf_solve(double max_date)
424 double min = -1.0; /* duration */
425 double next_event_date = -1.0;
426 double model_next_action_end = -1.0;
428 surf_resource_t resource = NULL;
429 surf_model_t model = NULL;
430 tmgr_trace_event_t event = NULL;
433 if (max_date != -1.0 && max_date != NOW) {
434 min = max_date - NOW;
437 XBT_DEBUG("Looking for next action end for all models except NS3");
438 xbt_dynar_foreach(model_list, iter, model) {
439 if(strcmp(model->name,"network NS3") ){
440 XBT_DEBUG("Running for Resource [%s]", model->name);
441 model_next_action_end = model->model_private->share_resources(NOW);
442 XBT_DEBUG("Resource [%s] : next action end = %f",
443 model->name, model_next_action_end);
444 if (((min < 0.0) || (model_next_action_end < min))
445 && (model_next_action_end >= 0.0))
446 min = model_next_action_end;
450 XBT_DEBUG("Min for resources (except NS3) : %f", min);
452 XBT_DEBUG("Looking for next trace event");
455 XBT_DEBUG("Next TRACE event : %f", next_event_date);
457 next_event_date = tmgr_history_next_date(history);
459 if(surf_network_model->name && !strcmp(surf_network_model->name,"network NS3")){
460 if(next_event_date!=-1.0 && min!=-1.0) {
461 min = MIN(next_event_date - NOW, min);
463 min = MAX(next_event_date - NOW, min);
466 XBT_DEBUG("Run for NS3 at most %f", min);
467 // run until min or next flow
468 model_next_action_end = surf_network_model->model_private->share_resources(min);
470 XBT_DEBUG("Min for NS3 : %f", model_next_action_end);
471 if(model_next_action_end>=0.0)
472 min = model_next_action_end;
475 if (next_event_date == -1.0) break;
477 if ((min != -1.0) && (next_event_date > NOW + min)) break;
479 XBT_DEBUG("Updating models");
481 tmgr_history_get_next_event_leq(history, next_event_date,
483 (void **) &resource))) {
484 if (resource->model->model_private->resource_used(resource)) {
485 min = next_event_date - NOW;
487 ("This event will modify model state. Next event set to %f",
490 /* update state of model_obj according to new value. Does not touch lmm.
491 It will be modified if needed when updating actions */
492 XBT_DEBUG("Calling update_resource_state for resource %s with min %lf",
493 resource->model->name, min);
494 resource->model->model_private->update_resource_state(resource,
500 /* FIXME: Moved this test to here to avoid stoping simulation if there are actions running on cpus and all cpus are with availability = 0.
501 * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
502 * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
506 XBT_DEBUG("Duration set to %f", min);
510 xbt_dynar_foreach(model_list, iter, model)
511 model->model_private->update_actions_state(NOW, min);
514 TRACE_paje_dump_buffer (0);
520 XBT_INLINE double surf_get_clock(void)