3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "surf_private.h"
11 #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 _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] == '/');
106 static double NOW = 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[] = {
115 {"Constant", "Simplistic network model where all communication take a constant time (one second)", NULL, surf_network_model_init_Constant},
116 {"CM02", "Realistic network model with lmm_solve and no correction factors", NULL, surf_network_model_init_CM02},
117 {"LV08", "Realistic network model with lmm_solve and these correction factors: latency*=10.4, bandwidth*=.92, S=8775" , NULL, surf_network_model_init_LegrandVelho},
119 {"GTNets", "Network Pseudo-model using the GTNets simulator instead of an analytic model", NULL, surf_network_model_init_GTNETS},
121 {"Reno", "Model using lagrange_solve instead of lmm_solve (experts only)", NULL, surf_network_model_init_Reno},
122 {"Reno2", "Model using lagrange_solve instead of lmm_solve (experts only)", NULL, surf_network_model_init_Reno2},
123 {"Vegas", "Model using lagrange_solve instead of lmm_solve (experts only)", NULL, surf_network_model_init_Vegas},
124 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
127 s_surf_model_description_t surf_cpu_model_description[] = {
128 {"Cas01_fullupdate", "CPU classical model time=size/power", NULL, surf_cpu_model_init_Cas01},
129 {"Cas01", "Variation of Cas01_fullupdate with partial invalidation optimization of lmm system. Should produce the same values, only faster", NULL, surf_cpu_model_init_Cas01_im},
130 {"CpuTI", "Variation of Cas01 with also trace integration. Should produce the same values, only faster if you use availability traces", NULL, surf_cpu_model_init_ti},
131 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
134 s_surf_model_description_t surf_workstation_model_description[] = {
135 {"CLM03", "Default workstation model, using LV08 and CM02 as network and CPU", NULL, surf_workstation_model_init_CLM03, create_workstations},
136 {"compound", "Workstation model allowing you to use other network and CPU models", NULL, surf_workstation_model_init_compound, create_workstations},
137 {"ptask_L07", "Workstation model with better parallel task modeling", NULL, surf_workstation_model_init_ptask_L07, NULL},
138 {NULL, NULL, NULL, NULL} /* this array must be NULL terminated */
141 void update_model_description(s_surf_model_description_t * table,
142 const char *name, surf_model_t model)
144 int i = find_model_description(table, name);
145 table[i].model = model;
148 /** Displays the long description of all registered models, and quit */
149 void model_help(const char* category, s_surf_model_description_t * table) {
151 printf("Long description of the %s models accepted by this simulator:\n",category);
152 for (i = 0; table[i].name; i++)
153 printf(" %s: %s\n", table[i].name, table[i].description);
156 int find_model_description(s_surf_model_description_t * table,
160 char *name_list = NULL;
162 for (i = 0; table[i].name; i++)
163 if (!strcmp(name, table[i].name)) {
166 name_list = strdup(table[0].name);
167 for (i = 1; table[i].name; i++) {
169 xbt_realloc(name_list, strlen(name_list) + strlen(table[i].name) + 2);
170 strcat(name_list, ", ");
171 strcat(name_list, table[i].name);
173 xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.", name,
177 double generic_maxmin_share_resources(xbt_swag_t running_actions,
180 void (*solve) (lmm_system_t))
182 surf_action_t action = NULL;
185 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
187 xbt_assert0(solve, "Give me a real solver function!");
190 xbt_swag_foreach(action, running_actions) {
191 value = lmm_variable_getvalue(VARIABLE(action));
192 if ((value > 0) || (action->max_duration >= 0))
200 if (action->remains > 0)
201 min = action->remains / value;
204 if ((action->max_duration >= 0) && (action->max_duration < min))
205 min = action->max_duration;
207 min = action->max_duration;
210 for (action = xbt_swag_getNext(action, running_actions->offset);
211 action; action = xbt_swag_getNext(action, running_actions->offset)) {
212 value = lmm_variable_getvalue(VARIABLE(action));
214 if (action->remains > 0)
215 value = action->remains / value;
220 DEBUG2("Updating min (value) with %p: %f", action, min);
223 if ((action->max_duration >= 0) && (action->max_duration < min)) {
224 min = action->max_duration;
225 DEBUG2("Updating min (duration) with %p: %f", action, min);
228 DEBUG1("min value : %f", min);
235 XBT_LOG_EXTERNAL_CATEGORY(surf_cpu);
236 XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
237 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange);
238 XBT_LOG_EXTERNAL_CATEGORY(surf_lagrange_dichotomy);
239 XBT_LOG_EXTERNAL_CATEGORY(surf_maxmin);
240 XBT_LOG_EXTERNAL_CATEGORY(surf_network);
241 XBT_LOG_EXTERNAL_CATEGORY(surf_trace);
242 XBT_LOG_EXTERNAL_CATEGORY(surf_parse);
243 XBT_LOG_EXTERNAL_CATEGORY(surf_timer);
244 XBT_LOG_EXTERNAL_CATEGORY(surf_workstation);
245 XBT_LOG_EXTERNAL_CATEGORY(surf_config);
246 XBT_LOG_EXTERNAL_CATEGORY(surf_routing);
250 XBT_LOG_EXTERNAL_CATEGORY(surf_network_gtnets);
253 void surf_init(int *argc, char **argv)
255 /* Connect our log channels: that must be done manually under windows */
256 XBT_LOG_CONNECT(surf_cpu, surf);
257 XBT_LOG_CONNECT(surf_kernel, surf);
258 XBT_LOG_CONNECT(surf_lagrange, surf);
259 XBT_LOG_CONNECT(surf_lagrange_dichotomy, surf_lagrange);
260 XBT_LOG_CONNECT(surf_maxmin, surf);
261 XBT_LOG_CONNECT(surf_network, surf);
262 XBT_LOG_CONNECT(surf_trace, surf);
263 XBT_LOG_CONNECT(surf_parse, surf);
264 XBT_LOG_CONNECT(surf_timer, surf);
265 XBT_LOG_CONNECT(surf_workstation, surf);
266 XBT_LOG_CONNECT(surf_config, surf);
267 XBT_LOG_CONNECT(surf_routing, surf);
270 XBT_LOG_CONNECT(surf_network_gtnets, surf);
273 xbt_init(argc, argv);
275 model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
277 history = tmgr_history_new();
279 surf_config_init(argc, argv);
283 # define FILE_DELIM "\\"
285 # define FILE_DELIM "/" /* FIXME: move to better location */
288 FILE *surf_fopen(const char *name, const char *mode)
291 char *path_elm = NULL;
297 if (__surf_is_absolute_file_path(name)) /* don't mess with absolute file names */
298 return fopen(name, mode);
300 /* search relative files in the path */
301 xbt_dynar_foreach(surf_path, cpt, path_elm) {
302 buff = bprintf("%s" FILE_DELIM "%s", path_elm, name);
303 file = fopen(buff, mode);
315 surf_model_t model = NULL;
317 surf_config_finalize();
319 xbt_dynar_foreach(model_list, iter, model)
320 model->model_private->finalize();
321 xbt_dynar_free(&model_list);
324 lmm_system_free(maxmin_system);
325 maxmin_system = NULL;
328 tmgr_history_free(history);
333 xbt_dynar_free(&surf_path);
336 surf_parse_lex_destroy();
337 surf_parse_free_callbacks();
338 xbt_dict_free(&route_table);
339 NOW = 0; /* Just in case the user plans to restart the simulation afterward */
343 void surf_presolve(void)
345 double next_event_date = -1.0;
346 tmgr_trace_event_t event = NULL;
348 surf_resource_t resource = NULL;
349 surf_model_t model = NULL;
353 ("First Run! Let's \"purge\" events and put models in the right state");
354 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
355 if (next_event_date > NOW)
358 tmgr_history_get_next_event_leq(history, next_event_date,
359 &value, (void **) &resource))) {
360 resource->model->model_private->update_resource_state(resource,
365 xbt_dynar_foreach(model_list, iter, model)
366 model->model_private->update_actions_state(NOW, 0.0);
369 double surf_solve(void)
372 double next_event_date = -1.0;
373 double model_next_action_end = -1.0;
375 surf_resource_t resource = NULL;
376 surf_model_t model = NULL;
377 tmgr_trace_event_t event = NULL;
382 DEBUG0("Looking for next action end");
383 xbt_dynar_foreach(model_list, iter, model) {
384 DEBUG1("Running for Resource [%s]", model->name);
385 model_next_action_end = model->model_private->share_resources(NOW);
386 DEBUG2("Resource [%s] : next action end = %f",
387 model->name, model_next_action_end);
388 if (((min < 0.0) || (model_next_action_end < min))
389 && (model_next_action_end >= 0.0))
390 min = model_next_action_end;
392 DEBUG1("Next action end : %f", min);
394 DEBUG0("Looking for next event");
395 while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
396 DEBUG1("Next TRACE event : %f", next_event_date);
397 if ((min != -1.0) && (next_event_date > NOW + min))
399 DEBUG0("Updating models");
401 tmgr_history_get_next_event_leq(history, next_event_date,
402 &value, (void **) &resource))) {
403 if (resource->model->model_private->resource_used(resource)) {
404 min = next_event_date - NOW;
406 ("This event will modify model state. Next event set to %f", min);
408 /* update state of model_obj according to new value. Does not touch lmm.
409 It will be modified if needed when updating actions */
410 DEBUG2("Calling update_resource_state for resource %s with min %lf",
411 resource->model->name, min);
412 resource->model->model_private->update_resource_state(resource, event,
417 /* FIXME: Moved this test to here to avoid stoping simulation if there are actions running on cpus and all cpus are with availability = 0.
418 * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
419 * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
423 DEBUG1("Duration set to %f", min);
427 xbt_dynar_foreach(model_list, iter, model)
428 model->model_private->update_actions_state(NOW, min);
433 double surf_get_clock(void)