src/surf/network.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   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. */
   7
   8 #include "network_private.h"
   9 #include "xbt/log.h"
  10 #include "xbt/str.h"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  13                                 "Logging specific to the SURF network module");
  14
  15 surf_model_t surf_network_model = NULL;
  16 static lmm_system_t network_maxmin_system = NULL;
  17 static void (*network_solve) (lmm_system_t) = NULL;
  18 xbt_dict_t link_set = NULL;
  19
  20 double latency_factor = 1.0;    /* default value */
  21 double bandwidth_factor = 1.0;  /* default value */
  22 double weight_S_parameter = 0.0;        /* default value */
  23
  24 int card_number = 0;
  25 int host_number = 0;
  26 link_CM02_t **routing_table = NULL;
  27 int *routing_table_size = NULL;
  28 static link_CM02_t loopback = NULL;
  29 double sg_tcp_gamma = 0.0;
  30
  31
  32 static void create_routing_table(void)
  33 {
  34   routing_table = xbt_new0(link_CM02_t *,       /*card_number * card_number */
  35                            host_number * host_number);
  36   routing_table_size =
  37     xbt_new0(int, /*card_number * card_number */ host_number * host_number);
  38 }
  39
  40 static void link_free(void *nw_link)
  41 {
  42   xbt_dict_free(&(((link_CM02_t) nw_link)->properties));
  43   surf_resource_free(nw_link);
  44 }
  45
  46 static link_CM02_t link_new(char *name,
  47                             double bw_initial,
  48                             tmgr_trace_t bw_trace,
  49                             double lat_initial,
  50                             tmgr_trace_t lat_trace,
  51                             e_surf_link_state_t
  52                             state_initial,
  53                             tmgr_trace_t state_trace,
  54                             e_surf_link_sharing_policy_t
  55                             policy, xbt_dict_t properties)
  56 {
  57   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  58   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  59               "Link '%s' declared several times in the platform file.", name);
  60
  61   nw_link->generic_resource.model = surf_network_model;
  62   nw_link->generic_resource.name = name;
  63   nw_link->bw_current = bw_initial;
  64   if (bw_trace)
  65     nw_link->bw_event =
  66       tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  67   nw_link->lat_current = lat_initial;
  68   if (lat_trace)
  69     nw_link->lat_event =
  70       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  71   nw_link->state_current = state_initial;
  72   if (state_trace)
  73     nw_link->state_event =
  74       tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  75
  76   nw_link->constraint =
  77     lmm_constraint_new(network_maxmin_system, nw_link,
  78                        bandwidth_factor * nw_link->bw_current);
  79
  80   if (policy == SURF_LINK_FATPIPE)
  81     lmm_constraint_shared(nw_link->constraint);
  82
  83   nw_link->properties = properties;
  84
  85   current_property_set = properties;
  86
  87   xbt_dict_set(link_set, name, nw_link, link_free);
  88
  89   return nw_link;
  90 }
  91
  92 static int network_card_new(const char *card_name)
  93 {
  94   network_card_CM02_t card =
  95     surf_model_resource_by_name(surf_network_model, card_name);
  96
  97   if (!card) {
  98     card = xbt_new0(s_network_card_CM02_t, 1);
  99     card->generic_resource.name = xbt_strdup(card_name);
 100     card->id = host_number++;
 101     xbt_dict_set(surf_model_resource_set(surf_network_model), card_name, card,
 102                  surf_resource_free);
 103   }
 104   return card->id;
 105 }
 106
 107 static void route_new(int src_id, int dst_id,
 108                       link_CM02_t * link_list, int nb_link)
 109 {
 110   ROUTE_SIZE(src_id, dst_id) = nb_link;
 111   ROUTE(src_id, dst_id) = link_list =
 112     xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 113 }
 114
 115 static void parse_link_init(void)
 116 {
 117   char *name_link;
 118   double bw_initial;
 119   tmgr_trace_t bw_trace;
 120   double lat_initial;
 121   tmgr_trace_t lat_trace;
 122   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 123   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 124   tmgr_trace_t state_trace;
 125
 126   name_link = xbt_strdup(A_surfxml_link_id);
 127   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 128   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 129   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 130   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 131
 132   xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
 133               || (A_surfxml_link_state ==
 134                   A_surfxml_link_state_OFF), "Invalid state");
 135   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 136     state_initial_link = SURF_LINK_ON;
 137   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
 138     state_initial_link = SURF_LINK_OFF;
 139
 140   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
 141     policy_initial_link = SURF_LINK_SHARED;
 142   else if (A_surfxml_link_sharing_policy ==
 143            A_surfxml_link_sharing_policy_FATPIPE)
 144     policy_initial_link = SURF_LINK_FATPIPE;
 145
 146   surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
 147
 148   link_new(name_link, bw_initial, bw_trace,
 149            lat_initial, lat_trace, state_initial_link, state_trace,
 150            policy_initial_link, xbt_dict_new());
 151
 152 }
 153
 154 static int src_id = -1;
 155 static int dst_id = -1;
 156
 157 static void parse_route_set_endpoints(void)
 158 {
 159   src_id = network_card_new(A_surfxml_route_src);
 160   dst_id = network_card_new(A_surfxml_route_dst);
 161   route_action = A_surfxml_route_action;
 162 }
 163
 164 static void parse_route_set_route(void)
 165 {
 166   char *name;
 167   if (src_id != -1 && dst_id != -1) {
 168     name = bprintf("%x#%x", src_id, dst_id);
 169     manage_route(route_table, name, route_action, 0);
 170     free(name);
 171   }
 172 }
 173
 174 static void add_loopback(void)
 175 {
 176   int i;
 177   /* Adding loopback if needed */
 178   for (i = 0; i < host_number; i++)
 179     if (!ROUTE_SIZE(i, i)) {
 180       if (!loopback)
 181         loopback = link_new(xbt_strdup("__MSG_loopback__"),
 182                             498000000, NULL, 0.000015, NULL,
 183                             SURF_LINK_ON, NULL, SURF_LINK_FATPIPE, NULL);
 184       ROUTE_SIZE(i, i) = 1;
 185       ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
 186       ROUTE(i, i)[0] = loopback;
 187     }
 188 }
 189
 190 static void add_route(void)
 191 {
 192   xbt_ex_t e;
 193   int nb_link = 0;
 194   unsigned int cpt = 0;
 195   int link_list_capacity = 0;
 196   link_CM02_t *link_list = NULL;
 197   xbt_dict_cursor_t cursor = NULL;
 198   char *key, *data, *end;
 199   const char *sep = "#";
 200   xbt_dynar_t links, keys;
 201
 202   if (routing_table == NULL)
 203     create_routing_table();
 204
 205   xbt_dict_foreach(route_table, cursor, key, data) {
 206     char *link = NULL;
 207     nb_link = 0;
 208     links = (xbt_dynar_t) data;
 209     keys = xbt_str_split_str(key, sep);
 210
 211     link_list_capacity = xbt_dynar_length(links);
 212     link_list = xbt_new(link_CM02_t, link_list_capacity);
 213
 214     src_id = strtol(xbt_dynar_get_as(keys, 0, char *), &end, 16);
 215     dst_id = strtol(xbt_dynar_get_as(keys, 1, char *), &end, 16);
 216     xbt_dynar_free(&keys);
 217
 218     xbt_dynar_foreach(links, cpt, link) {
 219       TRY {
 220         link_list[nb_link++] = xbt_dict_get(link_set, link);
 221       }
 222       CATCH(e) {
 223         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 224       }
 225     }
 226     route_new(src_id, dst_id, link_list, nb_link);
 227   }
 228 }
 229
 230 static void count_hosts(void)
 231 {
 232   host_number++;
 233 }
 234
 235
 236 static void add_traces(void)
 237 {
 238   xbt_dict_cursor_t cursor = NULL;
 239   char *trace_name, *elm;
 240
 241   static int called = 0;
 242   if (called)
 243     return;
 244   called = 1;
 245
 246   /* connect all traces relative to network */
 247   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 248     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 249     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 250
 251     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 252                 trace_name, elm);
 253     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 254                 trace_name, elm);
 255
 256     link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 257   }
 258
 259   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 260     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 261     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 262
 263     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 264                 trace_name, elm);
 265     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 266                 trace_name, elm);
 267
 268     link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 269   }
 270
 271   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 272     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 273     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 274
 275     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 276                 trace_name, elm);
 277     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 278                 trace_name, elm);
 279
 280     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 281   }
 282 }
 283
 284 static void define_callbacks(const char *file)
 285 {
 286   /* Figuring out the network links */
 287   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 288   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 289   surfxml_add_callback(STag_surfxml_route_cb_list,
 290                        &parse_route_set_endpoints);
 291   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 292   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 293   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 294   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 295 }
 296
 297 static int resource_used(void *resource_id)
 298 {
 299   return lmm_constraint_used(network_maxmin_system,
 300                              ((link_CM02_t) resource_id)->constraint);
 301 }
 302
 303 static int action_unref(surf_action_t action)
 304 {
 305   action->refcount--;
 306   if (!action->refcount) {
 307     xbt_swag_remove(action, action->state_set);
 308     if (((surf_action_network_CM02_t) action)->variable)
 309       lmm_variable_free(network_maxmin_system,
 310                         ((surf_action_network_CM02_t) action)->variable);
 311     free(action);
 312     return 1;
 313   }
 314   return 0;
 315 }
 316
 317 static void action_ref(surf_action_t action)
 318 {
 319   action->refcount++;
 320 }
 321
 322 static void action_cancel(surf_action_t action)
 323 {
 324   return;
 325 }
 326
 327 static void action_recycle(surf_action_t action)
 328 {
 329   return;
 330 }
 331
 332 static double share_resources(double now)
 333 {
 334   s_surf_action_network_CM02_t s_action;
 335   surf_action_network_CM02_t action = NULL;
 336   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 337   double min;
 338
 339   min = generic_maxmin_share_resources(running_actions,
 340                                        xbt_swag_offset(s_action,
 341                                                        variable),
 342                                        network_maxmin_system, network_solve);
 343
 344 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 345
 346   xbt_swag_foreach(action, running_actions) {
 347     if (action->latency > 0) {
 348       if (min < 0)
 349         min = action->latency;
 350       else if (action->latency < min)
 351         min = action->latency;
 352     }
 353   }
 354
 355   return min;
 356 }
 357
 358 static void update_actions_state(double now, double delta)
 359 {
 360   double deltap = 0.0;
 361   surf_action_network_CM02_t action = NULL;
 362   surf_action_network_CM02_t next_action = NULL;
 363   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 364   /*
 365      xbt_swag_t failed_actions =
 366      surf_network_model->states.failed_action_set;
 367    */
 368
 369   xbt_swag_foreach_safe(action, next_action, running_actions) {
 370     deltap = delta;
 371     if (action->latency > 0) {
 372       if (action->latency > deltap) {
 373         double_update(&(action->latency), deltap);
 374         deltap = 0.0;
 375       } else {
 376         double_update(&(deltap), action->latency);
 377         action->latency = 0.0;
 378       }
 379       if ((action->latency == 0.0) && !(action->suspended))
 380         lmm_update_variable_weight(network_maxmin_system, action->variable,
 381                                    action->weight);
 382     }
 383     double_update(&(action->generic_action.remains),
 384                   lmm_variable_getvalue(action->variable) * deltap);
 385     if (action->generic_action.max_duration != NO_MAX_DURATION)
 386       double_update(&(action->generic_action.max_duration), delta);
 387
 388     if ((action->generic_action.remains <= 0) &&
 389         (lmm_get_variable_weight(action->variable) > 0)) {
 390       action->generic_action.finish = surf_get_clock();
 391       surf_network_model->action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 392     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 393                (action->generic_action.max_duration <= 0)) {
 394       action->generic_action.finish = surf_get_clock();
 395       surf_network_model->action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 396     }
 397   }
 398
 399   return;
 400 }
 401
 402 static void update_resource_state(void *id,
 403                                   tmgr_trace_event_t event_type,
 404                                   double value, double date)
 405 {
 406   link_CM02_t nw_link = id;
 407   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 408   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 409   /*     value, event_type); */
 410
 411   if (event_type == nw_link->bw_event) {
 412     double delta =
 413       weight_S_parameter / value - weight_S_parameter / nw_link->bw_current;
 414     lmm_variable_t var = NULL;
 415     lmm_element_t elem = NULL;
 416     surf_action_network_CM02_t action = NULL;
 417
 418     nw_link->bw_current = value;
 419     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 420                                 bandwidth_factor * nw_link->bw_current);
 421     if (weight_S_parameter > 0) {
 422       while ((var = lmm_get_var_from_cnst
 423               (network_maxmin_system, nw_link->constraint, &elem))) {
 424         action = lmm_variable_id(var);
 425         action->weight += delta;
 426         if (!(action->suspended))
 427           lmm_update_variable_weight(network_maxmin_system, action->variable,
 428                                      action->weight);
 429       }
 430     }
 431   } else if (event_type == nw_link->lat_event) {
 432     double delta = value - nw_link->lat_current;
 433     lmm_variable_t var = NULL;
 434     lmm_element_t elem = NULL;
 435     surf_action_network_CM02_t action = NULL;
 436
 437     nw_link->lat_current = value;
 438     while ((var = lmm_get_var_from_cnst
 439             (network_maxmin_system, nw_link->constraint, &elem))) {
 440       action = lmm_variable_id(var);
 441       action->lat_current += delta;
 442       action->weight += delta;
 443       if (action->rate < 0)
 444         lmm_update_variable_bound(network_maxmin_system, action->variable,
 445                                   sg_tcp_gamma / (2.0 * action->lat_current));
 446       else
 447         lmm_update_variable_bound(network_maxmin_system, action->variable,
 448                                   min(action->rate,
 449                                       sg_tcp_gamma / (2.0 *
 450                                                       action->lat_current)));
 451       if (!(action->suspended))
 452         lmm_update_variable_weight(network_maxmin_system, action->variable,
 453                                    action->weight);
 454
 455     }
 456   } else if (event_type == nw_link->state_event) {
 457     if (value > 0)
 458       nw_link->state_current = SURF_LINK_ON;
 459     else {
 460       lmm_constraint_t cnst = nw_link->constraint;
 461       lmm_variable_t var = NULL;
 462       lmm_element_t elem = NULL;
 463
 464       nw_link->state_current = SURF_LINK_OFF;
 465       while ((var = lmm_get_var_from_cnst
 466               (network_maxmin_system, cnst, &elem))) {
 467         surf_action_t action = lmm_variable_id(var);
 468
 469         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 470             surf_action_state_get(action) == SURF_ACTION_READY) {
 471           action->finish = date;
 472           surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 473         }
 474       }
 475     }
 476   } else {
 477     CRITICAL0("Unknown event ! \n");
 478     xbt_abort();
 479   }
 480
 481   return;
 482 }
 483
 484 static surf_action_t communicate(void *src, void *dst, double size,
 485                                  double rate)
 486 {
 487   surf_action_network_CM02_t action = NULL;
 488   /* LARGE PLATFORMS HACK:
 489      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 490      Use the cluster_id for ->id */
 491   network_card_CM02_t card_src = src;
 492   network_card_CM02_t card_dst = dst;
 493   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 494   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 495   /* LARGE PLATFORMS HACK:
 496      total_route_size = route_size + src->link_nb + dst->nb */
 497   int i;
 498
 499   XBT_IN4("(%s,%s,%g,%g)", card_src->generic_resource.name, card_dst->generic_resource.name, size, rate);
 500   /* LARGE PLATFORMS HACK:
 501      assert on total_route_size */
 502   xbt_assert2(route_size,
 503               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 504               card_src->generic_resource.name, card_dst->generic_resource.name);
 505
 506   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 507
 508   action->generic_action.refcount = 1;
 509   action->generic_action.cost = size;
 510   action->generic_action.remains = size;
 511   action->generic_action.max_duration = NO_MAX_DURATION;
 512   action->generic_action.start = surf_get_clock();
 513   action->generic_action.finish = -1.0;
 514   action->generic_action.model_type = surf_network_model;
 515   action->suspended = 0;        /* Should be useless because of the
 516                                    calloc but it seems to help valgrind... */
 517   action->generic_action.state_set =
 518     surf_network_model->states.running_action_set;
 519   for (i = 0; i < route_size; i++)
 520     if (route[i]->state_current == SURF_LINK_OFF) {
 521       action->generic_action.state_set =
 522         surf_network_model->states.failed_action_set;
 523       break;
 524     }
 525
 526   xbt_swag_insert(action, action->generic_action.state_set);
 527   action->rate = rate;
 528
 529   action->latency = 0.0;
 530   action->weight = 0.0;
 531   for (i = 0; i < route_size; i++) {
 532     action->latency += route[i]->lat_current;
 533     action->weight +=
 534       route[i]->lat_current + weight_S_parameter / route[i]->bw_current;
 535   }
 536   /* LARGE PLATFORMS HACK:
 537      Add src->link and dst->link latencies */
 538   action->lat_current = action->latency;
 539   action->latency *= latency_factor;
 540
 541   /* LARGE PLATFORMS HACK:
 542      lmm_variable_new(..., total_route_size) */
 543   if (action->latency > 0)
 544     action->variable =
 545       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0, route_size);
 546   else
 547     action->variable =
 548       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0, route_size);
 549
 550   if (action->rate < 0) {
 551     if (action->lat_current > 0)
 552       lmm_update_variable_bound(network_maxmin_system, action->variable,
 553                                 sg_tcp_gamma / (2.0 * action->lat_current));
 554     else
 555       lmm_update_variable_bound(network_maxmin_system, action->variable,
 556                                 -1.0);
 557   } else {
 558     if (action->lat_current > 0)
 559       lmm_update_variable_bound(network_maxmin_system, action->variable,
 560                                 min(action->rate,
 561                                     sg_tcp_gamma / (2.0 *
 562                                                     action->lat_current)));
 563     else
 564       lmm_update_variable_bound(network_maxmin_system, action->variable,
 565                                 action->rate);
 566   }
 567
 568   for (i = 0; i < route_size; i++)
 569     lmm_expand(network_maxmin_system, route[i]->constraint,
 570                action->variable, 1.0);
 571   /* LARGE PLATFORMS HACK:
 572      expand also with src->link and dst->link */
 573
 574   XBT_OUT;
 575
 576   return (surf_action_t) action;
 577 }
 578
 579 /* returns an array of link_CM02_t */
 580 static const void **get_route(void *src, void *dst)
 581 {
 582   network_card_CM02_t card_src = src;
 583   network_card_CM02_t card_dst = dst;
 584   return (const void **) ROUTE(card_src->id, card_dst->id);
 585 }
 586
 587 static int get_route_size(void *src, void *dst)
 588 {
 589   network_card_CM02_t card_src = src;
 590   network_card_CM02_t card_dst = dst;
 591   return ROUTE_SIZE(card_src->id, card_dst->id);
 592 }
 593
 594 static double get_link_bandwidth(const void *link)
 595 {
 596   return ((link_CM02_t) link)->bw_current;
 597 }
 598
 599 static double get_link_latency(const void *link)
 600 {
 601   return ((link_CM02_t) link)->lat_current;
 602 }
 603
 604 static int link_shared(const void *link)
 605 {
 606   return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
 607 }
 608
 609 static xbt_dict_t get_properties(void *link)
 610 {
 611   return ((link_CM02_t) link)->properties;
 612 }
 613
 614 static void action_suspend(surf_action_t action)
 615 {
 616   ((surf_action_network_CM02_t) action)->suspended = 1;
 617   lmm_update_variable_weight(network_maxmin_system,
 618                              ((surf_action_network_CM02_t) action)->variable,
 619                              0.0);
 620 }
 621
 622 static void action_resume(surf_action_t action)
 623 {
 624   if (((surf_action_network_CM02_t) action)->suspended) {
 625     lmm_update_variable_weight(network_maxmin_system,
 626                                ((surf_action_network_CM02_t)
 627                                 action)->variable,
 628                                ((surf_action_network_CM02_t) action)->weight);
 629     ((surf_action_network_CM02_t) action)->suspended = 0;
 630   }
 631 }
 632
 633 static int action_is_suspended(surf_action_t action)
 634 {
 635   return ((surf_action_network_CM02_t) action)->suspended;
 636 }
 637
 638 static void action_set_max_duration(surf_action_t action, double duration)
 639 {
 640   action->max_duration = duration;
 641 }
 642
 643 static void finalize(void)
 644 {
 645   int i, j;
 646
 647   xbt_dict_free(&link_set);
 648
 649   surf_model_exit(surf_network_model);
 650   surf_network_model = NULL;
 651
 652   loopback = NULL;
 653   for (i = 0; i < host_number; i++)
 654     for (j = 0; j < host_number; j++)
 655       free(ROUTE(i, j));
 656   free(routing_table);
 657   routing_table = NULL;
 658   free(routing_table_size);
 659   routing_table_size = NULL;
 660   host_number = 0;
 661   lmm_system_free(network_maxmin_system);
 662   network_maxmin_system = NULL;
 663 }
 664
 665 static void surf_network_model_init_internal(void)
 666 {
 667   surf_network_model = surf_model_init();
 668
 669   surf_network_model->name = "network";
 670   surf_network_model->action_unref = action_unref;
 671   surf_network_model->action_ref = action_ref;
 672   surf_network_model->action_cancel = action_cancel;
 673   surf_network_model->action_recycle = action_recycle;
 674
 675   surf_network_model->model_private->resource_used = resource_used;
 676   surf_network_model->model_private->share_resources = share_resources;
 677   surf_network_model->model_private->update_actions_state =
 678     update_actions_state;
 679   surf_network_model->model_private->update_resource_state =
 680     update_resource_state;
 681   surf_network_model->model_private->finalize = finalize;
 682
 683   surf_network_model->suspend = action_suspend;
 684   surf_network_model->resume = action_resume;
 685   surf_network_model->is_suspended = action_is_suspended;
 686   surf_cpu_model->set_max_duration = action_set_max_duration;
 687
 688   surf_network_model->extension.network.communicate = communicate;
 689   surf_network_model->extension.network.get_route = get_route;
 690   surf_network_model->extension.network.get_route_size = get_route_size;
 691   surf_network_model->extension.network.get_link_bandwidth =
 692     get_link_bandwidth;
 693   surf_network_model->extension.network.get_link_latency = get_link_latency;
 694   surf_network_model->extension.network.link_shared = link_shared;
 695
 696   surf_network_model->get_properties = get_properties;
 697
 698   link_set = xbt_dict_new();
 699
 700   if (!network_maxmin_system)
 701     network_maxmin_system = lmm_system_new();
 702 }
 703
 704 /************************************************************************/
 705 /* New model based on optimizations discussed during this thesis        */
 706 /************************************************************************/
 707 void surf_network_model_init_LegrandVelho(const char *filename)
 708 {
 709
 710   if (surf_network_model)
 711     return;
 712   surf_network_model_init_internal();
 713   define_callbacks(filename);
 714   xbt_dynar_push(model_list, &surf_network_model);
 715   network_solve = lmm_solve;
 716
 717   latency_factor = 10.4;
 718   bandwidth_factor = 0.92;
 719   weight_S_parameter = 8775;
 720
 721   update_model_description(surf_network_model_description,
 722                            "LegrandVelho", surf_network_model);
 723 }
 724
 725 /***************************************************************************/
 726 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 727 /***************************************************************************/
 728 /* @TechReport{      rr-lip2002-40, */
 729 /*   author        = {Henri Casanova and Loris Marchal}, */
 730 /*   institution   = {LIP}, */
 731 /*   title         = {A Network Model for Simulation of Grid Application}, */
 732 /*   number        = {2002-40}, */
 733 /*   month         = {oct}, */
 734 /*   year          = {2002} */
 735 /* } */
 736 void surf_network_model_init_CM02(const char *filename)
 737 {
 738
 739   if (surf_network_model)
 740     return;
 741   surf_network_model_init_internal();
 742   define_callbacks(filename);
 743   xbt_dynar_push(model_list, &surf_network_model);
 744   network_solve = lmm_solve;
 745
 746   update_model_description(surf_network_model_description,
 747                            "CM02", surf_network_model);
 748 }
 749
 750 void surf_network_model_init_Reno(const char *filename)
 751 {
 752   if (surf_network_model)
 753     return;
 754   surf_network_model_init_internal();
 755   define_callbacks(filename);
 756
 757   xbt_dynar_push(model_list, &surf_network_model);
 758   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 759   network_solve = lagrange_solve;
 760
 761   latency_factor = 10.4;
 762   bandwidth_factor = 0.92;
 763   weight_S_parameter = 8775;
 764
 765   update_model_description(surf_network_model_description,
 766                            "Reno", surf_network_model);
 767 }
 768
 769
 770 void surf_network_model_init_Reno2(const char *filename)
 771 {
 772   if (surf_network_model)
 773     return;
 774   surf_network_model_init_internal();
 775   define_callbacks(filename);
 776
 777   xbt_dynar_push(model_list, &surf_network_model);
 778   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 779                                     func_reno2_fpi);
 780   network_solve = lagrange_solve;
 781
 782   latency_factor = 10.4;
 783   bandwidth_factor = 0.92;
 784   weight_S_parameter = 8775;
 785
 786   update_model_description(surf_network_model_description,
 787                            "Reno2", surf_network_model);
 788 }
 789
 790 void surf_network_model_init_Vegas(const char *filename)
 791 {
 792   if (surf_network_model)
 793     return;
 794   surf_network_model_init_internal();
 795   define_callbacks(filename);
 796
 797   xbt_dynar_push(model_list, &surf_network_model);
 798   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 799                                     func_vegas_fpi);
 800   network_solve = lagrange_solve;
 801
 802   latency_factor = 10.4;
 803   bandwidth_factor = 0.92;
 804   weight_S_parameter = 8775;
 805
 806   update_model_description(surf_network_model_description,
 807                            "Vegas", surf_network_model);
 808 }
 809
 810 #ifdef HAVE_SDP
 811 void surf_network_model_init_SDP(const char *filename)
 812 {
 813   if (surf_network_model)
 814     return;
 815   surf_network_model_init_internal();
 816   define_callbacks(filename);
 817
 818   xbt_dynar_push(model_list, &surf_network_model);
 819   network_solve = sdp_solve;
 820
 821   update_model_description(surf_network_model_description,
 822                            "SDP", surf_network_model);
 823 }
 824 #endif