src/surf/network.c

   1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #include "network_private.h"
   8 #include "xbt/log.h"
   9 #include "xbt/str.h"
  10
  11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  12                                 "Logging specific to the SURF network module");
  13
  14 surf_model_t surf_network_model = NULL;
  15 static lmm_system_t network_maxmin_system = NULL;
  16 static void (*network_solve) (lmm_system_t) = NULL;
  17
  18 double sg_latency_factor = 1.0;    /* default value; can be set by model or from command line */
  19 double sg_bandwidth_factor = 1.0;  /* default value; can be set by model or from command line */
  20 double sg_weight_S_parameter = 0.0;/* default value; can be set by model or from command line */
  21
  22 double sg_tcp_gamma = 0.0;
  23
  24
  25 static link_CM02_t net_link_new(char *name,
  26                             double bw_initial,
  27                             tmgr_trace_t bw_trace,
  28                             double lat_initial,
  29                             tmgr_trace_t lat_trace,
  30                             e_surf_resource_state_t
  31                             state_initial,
  32                             tmgr_trace_t state_trace,
  33                             e_surf_link_sharing_policy_t
  34                             policy, xbt_dict_t properties)
  35 {
  36   link_CM02_t nw_link = (link_CM02_t)
  37     surf_resource_lmm_new(sizeof(s_link_CM02_t),
  38                           surf_network_model, name, properties,
  39                           network_maxmin_system,
  40                           sg_bandwidth_factor * bw_initial,
  41                           history,
  42                           state_initial, state_trace,
  43                           bw_initial, bw_trace);
  44
  45   xbt_assert1(!xbt_dict_get_or_null(surf_network_model->resource_set, name),
  46               "Link '%s' declared several times in the platform file.", name);
  47
  48   nw_link->lat_current = lat_initial;
  49   if (lat_trace)
  50     nw_link->lat_event =
  51       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  52
  53   if (policy == SURF_LINK_FATPIPE)
  54     lmm_constraint_shared(nw_link->lmm_resource.constraint);
  55
  56   xbt_dict_set(surf_network_model->resource_set, name, nw_link,
  57                surf_resource_free);
  58 #ifdef HAVE_TRACING
  59   TRACE_surf_link_declaration (name, bw_initial, lat_initial);
  60 #endif
  61
  62   return nw_link;
  63 }
  64
  65 static void net_parse_link_init(void)
  66 {
  67   char *name_link;
  68   double bw_initial;
  69   tmgr_trace_t bw_trace;
  70   double lat_initial;
  71   tmgr_trace_t lat_trace;
  72   e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
  73   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
  74   tmgr_trace_t state_trace;
  75
  76   name_link = xbt_strdup(A_surfxml_link_id);
  77   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
  78   bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
  79   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
  80   lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
  81
  82   xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
  83               || (A_surfxml_link_state ==
  84                   A_surfxml_link_state_OFF), "Invalid state");
  85   if (A_surfxml_link_state == A_surfxml_link_state_ON)
  86     state_initial_link = SURF_RESOURCE_ON;
  87   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
  88     state_initial_link = SURF_RESOURCE_OFF;
  89
  90   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
  91     policy_initial_link = SURF_LINK_SHARED;
  92   else if (A_surfxml_link_sharing_policy ==
  93            A_surfxml_link_sharing_policy_FATPIPE)
  94     policy_initial_link = SURF_LINK_FATPIPE;
  95
  96   state_trace = tmgr_trace_new(A_surfxml_link_state_file);
  97
  98   net_link_new(name_link, bw_initial, bw_trace,
  99            lat_initial, lat_trace, state_initial_link, state_trace,
 100            policy_initial_link, xbt_dict_new());
 101
 102 }
 103
 104 static void net_add_traces(void)
 105 {
 106   xbt_dict_cursor_t cursor = NULL;
 107   char *trace_name, *elm;
 108
 109   static int called = 0;
 110   if (called)
 111     return;
 112   called = 1;
 113
 114   /* connect all traces relative to network */
 115   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 116     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 117     link_CM02_t link =
 118       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 119
 120     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 121                 trace_name, elm);
 122     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 123                 trace_name, elm);
 124
 125     link->lmm_resource.state_event =
 126       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 127   }
 128
 129   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 130     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 131     link_CM02_t link =
 132       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 133
 134     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 135                 trace_name, elm);
 136     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 137                 trace_name, elm);
 138
 139     link->lmm_resource.power.event =
 140       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 141   }
 142
 143   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 144     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 145     link_CM02_t link =
 146       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 147
 148     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 149                 trace_name, elm);
 150     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 151                 trace_name, elm);
 152
 153     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 154   }
 155 }
 156
 157 static void net_define_callbacks(const char *file)
 158 {
 159   /* Figuring out the network links */
 160   surfxml_add_callback(STag_surfxml_link_cb_list, &net_parse_link_init);
 161   surfxml_add_callback(ETag_surfxml_platform_cb_list, &net_add_traces);
 162 }
 163
 164 static int net_resource_used(void *resource_id)
 165 {
 166   return lmm_constraint_used(network_maxmin_system,
 167                              ((surf_resource_lmm_t) resource_id)->constraint);
 168 }
 169
 170 static int net_action_unref(surf_action_t action)
 171 {
 172   action->refcount--;
 173   if (!action->refcount) {
 174     xbt_swag_remove(action, action->state_set);
 175     if (((surf_action_network_CM02_t) action)->variable)
 176       lmm_variable_free(network_maxmin_system,
 177                         ((surf_action_network_CM02_t) action)->variable);
 178     free(action);
 179     return 1;
 180   }
 181   return 0;
 182 }
 183
 184 static void net_action_cancel(surf_action_t action)
 185 {
 186   surf_network_model->action_state_set((surf_action_t) action,
 187                                        SURF_ACTION_FAILED);
 188   return;
 189 }
 190
 191 static void net_action_recycle(surf_action_t action)
 192 {
 193   return;
 194 }
 195
 196 static double net_action_get_remains(surf_action_t action)
 197 {
 198   return action->remains;
 199 }
 200
 201 static double net_share_resources(double now)
 202 {
 203   s_surf_action_network_CM02_t s_action;
 204   surf_action_network_CM02_t action = NULL;
 205   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 206   double min;
 207
 208   min = generic_maxmin_share_resources(running_actions,
 209                                        xbt_swag_offset(s_action,
 210                                                        variable),
 211                                        network_maxmin_system, network_solve);
 212
 213 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 214
 215   xbt_swag_foreach(action, running_actions) {
 216     if (action->latency > 0) {
 217       if (min < 0)
 218         min = action->latency;
 219       else if (action->latency < min)
 220         min = action->latency;
 221     }
 222   }
 223
 224   return min;
 225 }
 226
 227 static void net_update_actions_state(double now, double delta)
 228 {
 229   double deltap = 0.0;
 230   surf_action_network_CM02_t action = NULL;
 231   surf_action_network_CM02_t next_action = NULL;
 232   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 233   /*
 234      xbt_swag_t failed_actions =
 235      surf_network_model->states.failed_action_set;
 236    */
 237
 238   xbt_swag_foreach_safe(action, next_action, running_actions) {
 239
 240 #ifdef HAVE_TRACING
 241     xbt_dynar_t route = used_routing->get_route(action->src, action->dst);
 242     link_CM02_t link;
 243     unsigned int i;
 244     xbt_dynar_foreach(route, i, link) {
 245         TRACE_surf_link_set_utilization (link->lmm_resource.generic_resource.name,
 246           action->generic_action.data, lmm_variable_getvalue(action->variable), now-delta, delta);
 247     }
 248 #endif
 249
 250     deltap = delta;
 251     if (action->latency > 0) {
 252       if (action->latency > deltap) {
 253         double_update(&(action->latency), deltap);
 254         deltap = 0.0;
 255       } else {
 256         double_update(&(deltap), action->latency);
 257         action->latency = 0.0;
 258       }
 259       if ((action->latency == 0.0) && !(action->suspended))
 260         lmm_update_variable_weight(network_maxmin_system, action->variable,
 261                                    action->weight);
 262     }
 263     double_update(&(action->generic_action.remains),
 264                   lmm_variable_getvalue(action->variable) * deltap);
 265     if (action->generic_action.max_duration != NO_MAX_DURATION)
 266       double_update(&(action->generic_action.max_duration), delta);
 267
 268     if ((action->generic_action.remains <= 0) &&
 269         (lmm_get_variable_weight(action->variable) > 0)) {
 270       action->generic_action.finish = surf_get_clock();
 271       surf_network_model->action_state_set((surf_action_t) action,
 272                                            SURF_ACTION_DONE);
 273     } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
 274                && (action->generic_action.max_duration <= 0)) {
 275       action->generic_action.finish = surf_get_clock();
 276       surf_network_model->action_state_set((surf_action_t) action,
 277                                            SURF_ACTION_DONE);
 278     }
 279   }
 280
 281   return;
 282 }
 283
 284 static void net_update_resource_state(void *id,
 285                                   tmgr_trace_event_t event_type,
 286                                   double value, double date)
 287 {
 288   link_CM02_t nw_link = id;
 289   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 290   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 291   /*     value, event_type); */
 292
 293   if (event_type == nw_link->lmm_resource.power.event) {
 294     double delta =
 295       sg_weight_S_parameter / value - sg_weight_S_parameter /
 296       (nw_link->lmm_resource.power.peak * nw_link->lmm_resource.power.scale);
 297     lmm_variable_t var = NULL;
 298     lmm_element_t elem = NULL;
 299     surf_action_network_CM02_t action = NULL;
 300
 301     nw_link->lmm_resource.power.peak = value;
 302     lmm_update_constraint_bound(network_maxmin_system,
 303                                 nw_link->lmm_resource.constraint,
 304                                 sg_bandwidth_factor *
 305                                 (nw_link->lmm_resource.power.peak *
 306                                  nw_link->lmm_resource.power.scale));
 307 #ifdef HAVE_TRACING
 308     TRACE_surf_link_set_bandwidth (date, nw_link->lmm_resource.generic_resource.name, sg_bandwidth_factor * (nw_link->lmm_resource.power.peak * nw_link->lmm_resource.power.scale));
 309 #endif
 310     if (sg_weight_S_parameter > 0) {
 311       while ((var = lmm_get_var_from_cnst
 312               (network_maxmin_system, nw_link->lmm_resource.constraint,
 313                &elem))) {
 314         action = lmm_variable_id(var);
 315         action->weight += delta;
 316         if (!(action->suspended))
 317           lmm_update_variable_weight(network_maxmin_system, action->variable,
 318                                      action->weight);
 319       }
 320     }
 321     if (tmgr_trace_event_free(event_type))
 322       nw_link->lmm_resource.power.event = NULL;
 323   } else if (event_type == nw_link->lat_event) {
 324     double delta = value - nw_link->lat_current;
 325     lmm_variable_t var = NULL;
 326     lmm_element_t elem = NULL;
 327     surf_action_network_CM02_t action = NULL;
 328
 329     nw_link->lat_current = value;
 330     while ((var = lmm_get_var_from_cnst
 331             (network_maxmin_system, nw_link->lmm_resource.constraint,
 332              &elem))) {
 333       action = lmm_variable_id(var);
 334       action->lat_current += delta;
 335       action->weight += delta;
 336       if (action->rate < 0)
 337         lmm_update_variable_bound(network_maxmin_system, action->variable,
 338                                   sg_tcp_gamma / (2.0 * action->lat_current));
 339       else
 340         lmm_update_variable_bound(network_maxmin_system, action->variable,
 341                                   min(action->rate,
 342                                       sg_tcp_gamma / (2.0 *
 343                                                       action->lat_current)));
 344       if (!(action->suspended))
 345         lmm_update_variable_weight(network_maxmin_system, action->variable,
 346                                    action->weight);
 347
 348     }
 349     if (tmgr_trace_event_free(event_type))
 350       nw_link->lat_event = NULL;
 351   } else if (event_type == nw_link->lmm_resource.state_event) {
 352     if (value > 0)
 353       nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
 354     else {
 355       lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
 356       lmm_variable_t var = NULL;
 357       lmm_element_t elem = NULL;
 358
 359       nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
 360       while ((var = lmm_get_var_from_cnst
 361               (network_maxmin_system, cnst, &elem))) {
 362         surf_action_t action = lmm_variable_id(var);
 363
 364         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 365             surf_action_state_get(action) == SURF_ACTION_READY) {
 366           action->finish = date;
 367           surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 368         }
 369       }
 370     }
 371     if (tmgr_trace_event_free(event_type))
 372       nw_link->lmm_resource.state_event = NULL;
 373   } else {
 374     CRITICAL0("Unknown event ! \n");
 375     xbt_abort();
 376   }
 377
 378   return;
 379 }
 380
 381 static surf_action_t net_communicate(const char *src_name, const char *dst_name,
 382                                  int src, int dst, double size, double rate)
 383 {
 384   surf_action_network_CM02_t action = NULL;
 385   /* LARGE PLATFORMS HACK:
 386      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 387      Use the cluster_id for ->id */
 388   xbt_dynar_t route = used_routing->get_route(src, dst);
 389   /* LARGE PLATFORMS HACK:
 390      total_route_size = route_size + src->link_nb + dst->nb */
 391   unsigned int i;
 392
 393   XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
 394   /* LARGE PLATFORMS HACK:
 395      assert on total_route_size */
 396   xbt_assert2(xbt_dynar_length(route),
 397               "You're trying to send data from %s to %s but there is no connection between these two hosts.",
 398               src_name, dst_name);
 399
 400   link_CM02_t link;
 401   int failed = 0;
 402   xbt_dynar_foreach(route, i, link) {
 403     if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
 404       failed = 1;
 405       break;
 406     }
 407   }
 408   action =
 409     surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
 410                     surf_network_model, failed);
 411
 412   xbt_swag_insert(action, action->generic_action.state_set);
 413   action->rate = rate;
 414
 415   action->latency = 0.0;
 416   action->weight = 0.0;
 417   xbt_dynar_foreach(route, i, link) {
 418     action->latency += link->lat_current;
 419     action->weight +=
 420       link->lat_current +
 421       sg_weight_S_parameter /
 422       (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 423   }
 424   /* LARGE PLATFORMS HACK:
 425      Add src->link and dst->link latencies */
 426   action->lat_current = action->latency;
 427   action->latency *= sg_latency_factor;
 428
 429   /* LARGE PLATFORMS HACK:
 430      lmm_variable_new(..., total_route_size) */
 431   if (action->latency > 0)
 432     action->variable =
 433       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 434                        xbt_dynar_length(route));
 435   else
 436     action->variable =
 437       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 438                        xbt_dynar_length(route));
 439
 440   if (action->rate < 0) {
 441     if (action->lat_current > 0)
 442       lmm_update_variable_bound(network_maxmin_system, action->variable,
 443                                 sg_tcp_gamma / (2.0 * action->lat_current));
 444     else
 445       lmm_update_variable_bound(network_maxmin_system, action->variable,
 446                                 -1.0);
 447   } else {
 448     if (action->lat_current > 0)
 449       lmm_update_variable_bound(network_maxmin_system, action->variable,
 450                                 min(action->rate,
 451                                     sg_tcp_gamma / (2.0 *
 452                                                     action->lat_current)));
 453     else
 454       lmm_update_variable_bound(network_maxmin_system, action->variable,
 455                                 action->rate);
 456   }
 457
 458   xbt_dynar_foreach(route, i, link) {
 459     lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 460                action->variable, 1.0);
 461   }
 462   /* LARGE PLATFORMS HACK:
 463      expand also with src->link and dst->link */
 464
 465   /* saving the src and dst of this communication */
 466   action->src = src;
 467   action->dst = dst;
 468
 469   XBT_OUT;
 470
 471   return (surf_action_t) action;
 472 }
 473
 474 static double net_get_link_bandwidth(const void *link)
 475 {
 476   surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
 477   return lmm->power.peak * lmm->power.scale;
 478 }
 479
 480 static double net_get_link_latency(const void *link)
 481 {
 482   return ((link_CM02_t) link)->lat_current;
 483 }
 484
 485 static int net_link_shared(const void *link)
 486 {
 487   return lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
 488 }
 489
 490 static void net_action_suspend(surf_action_t action)
 491 {
 492   ((surf_action_network_CM02_t) action)->suspended = 1;
 493   lmm_update_variable_weight(network_maxmin_system,
 494                              ((surf_action_network_CM02_t) action)->variable,
 495                              0.0);
 496 }
 497
 498 static void net_action_resume(surf_action_t action)
 499 {
 500   if (((surf_action_network_CM02_t) action)->suspended) {
 501     lmm_update_variable_weight(network_maxmin_system,
 502                                ((surf_action_network_CM02_t)
 503                                 action)->variable,
 504                                ((surf_action_network_CM02_t) action)->weight);
 505     ((surf_action_network_CM02_t) action)->suspended = 0;
 506   }
 507 }
 508
 509 static int net_action_is_suspended(surf_action_t action)
 510 {
 511   return ((surf_action_network_CM02_t) action)->suspended;
 512 }
 513
 514 static void net_action_set_max_duration(surf_action_t action, double duration)
 515 {
 516   action->max_duration = duration;
 517 }
 518
 519 static void net_finalize(void)
 520 {
 521   surf_model_exit(surf_network_model);
 522   surf_network_model = NULL;
 523
 524   used_routing->finalize();
 525   lmm_system_free(network_maxmin_system);
 526   network_maxmin_system = NULL;
 527 }
 528
 529 static void surf_network_model_init_internal(void)
 530 {
 531   surf_network_model = surf_model_init();
 532
 533   surf_network_model->name = "network";
 534   surf_network_model->action_unref = net_action_unref;
 535   surf_network_model->action_cancel = net_action_cancel;
 536   surf_network_model->action_recycle = net_action_recycle;
 537   surf_network_model->get_remains = net_action_get_remains;
 538
 539   surf_network_model->model_private->resource_used = net_resource_used;
 540   surf_network_model->model_private->share_resources = net_share_resources;
 541   surf_network_model->model_private->update_actions_state =
 542     net_update_actions_state;
 543   surf_network_model->model_private->update_resource_state =
 544     net_update_resource_state;
 545   surf_network_model->model_private->finalize = net_finalize;
 546
 547   surf_network_model->suspend = net_action_suspend;
 548   surf_network_model->resume = net_action_resume;
 549   surf_network_model->is_suspended = net_action_is_suspended;
 550   surf_cpu_model->set_max_duration = net_action_set_max_duration;
 551
 552   surf_network_model->extension.network.communicate = net_communicate;
 553   surf_network_model->extension.network.get_link_bandwidth =
 554     net_get_link_bandwidth;
 555   surf_network_model->extension.network.get_link_latency = net_get_link_latency;
 556   surf_network_model->extension.network.link_shared = net_link_shared;
 557
 558   if (!network_maxmin_system)
 559     network_maxmin_system = lmm_system_new();
 560
 561   routing_model_create(sizeof(link_CM02_t),
 562                        net_link_new(xbt_strdup("__loopback__"),
 563                                 498000000, NULL, 0.000015, NULL,
 564                                 SURF_RESOURCE_ON, NULL, SURF_LINK_FATPIPE,
 565                                 NULL));
 566 }
 567
 568 /************************************************************************/
 569 /* New model based on optimizations discussed during this thesis        */
 570 /************************************************************************/
 571 void surf_network_model_init_LegrandVelho(const char *filename)
 572 {
 573
 574   if (surf_network_model)
 575     return;
 576   surf_network_model_init_internal();
 577   net_define_callbacks(filename);
 578   xbt_dynar_push(model_list, &surf_network_model);
 579   network_solve = lmm_solve;
 580
 581   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor",10.4);
 582   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 583   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 584
 585   update_model_description(surf_network_model_description,
 586                            "LV08", surf_network_model);
 587 }
 588
 589 /***************************************************************************/
 590 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 591 /***************************************************************************/
 592 /* @TechReport{      rr-lip2002-40, */
 593 /*   author        = {Henri Casanova and Loris Marchal}, */
 594 /*   institution   = {LIP}, */
 595 /*   title         = {A Network Model for Simulation of Grid Application}, */
 596 /*   number        = {2002-40}, */
 597 /*   month         = {oct}, */
 598 /*   year          = {2002} */
 599 /* } */
 600 void surf_network_model_init_CM02(const char *filename)
 601 {
 602
 603   if (surf_network_model)
 604     return;
 605   surf_network_model_init_internal();
 606   net_define_callbacks(filename);
 607   xbt_dynar_push(model_list, &surf_network_model);
 608   network_solve = lmm_solve;
 609
 610   update_model_description(surf_network_model_description,
 611                            "CM02", surf_network_model);
 612 }
 613
 614 void surf_network_model_init_Reno(const char *filename)
 615 {
 616   if (surf_network_model)
 617     return;
 618   surf_network_model_init_internal();
 619   net_define_callbacks(filename);
 620
 621   xbt_dynar_push(model_list, &surf_network_model);
 622   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 623   network_solve = lagrange_solve;
 624
 625   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 626   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 627   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 628
 629   update_model_description(surf_network_model_description,
 630                            "Reno", surf_network_model);
 631 }
 632
 633
 634 void surf_network_model_init_Reno2(const char *filename)
 635 {
 636   if (surf_network_model)
 637     return;
 638   surf_network_model_init_internal();
 639   net_define_callbacks(filename);
 640
 641   xbt_dynar_push(model_list, &surf_network_model);
 642   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 643                                     func_reno2_fpi);
 644   network_solve = lagrange_solve;
 645
 646   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 647   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 648   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S_parameter", 8775);
 649
 650   update_model_description(surf_network_model_description,
 651                            "Reno2", surf_network_model);
 652 }
 653
 654 void surf_network_model_init_Vegas(const char *filename)
 655 {
 656   if (surf_network_model)
 657     return;
 658   surf_network_model_init_internal();
 659   net_define_callbacks(filename);
 660
 661   xbt_dynar_push(model_list, &surf_network_model);
 662   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 663                                     func_vegas_fpi);
 664   network_solve = lagrange_solve;
 665
 666   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 667   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 668   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 669
 670   update_model_description(surf_network_model_description,
 671                            "Vegas", surf_network_model);
 672 }