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
  19 double sg_latency_factor = 1.0;    /* default value; can be set by model or from command line */
  20 double sg_bandwidth_factor = 1.0;  /* default value; can be set by model or from command line */
  21 double sg_weight_S_parameter = 0.0;/* default value; can be set by model or from command line */
  22
  23 double sg_tcp_gamma = 0.0;
  24
  25
  26 static link_CM02_t net_link_new(char *name,
  27                             double bw_initial,
  28                             tmgr_trace_t bw_trace,
  29                             double lat_initial,
  30                             tmgr_trace_t lat_trace,
  31                             e_surf_resource_state_t
  32                             state_initial,
  33                             tmgr_trace_t state_trace,
  34                             e_surf_link_sharing_policy_t
  35                             policy, xbt_dict_t properties)
  36 {
  37   link_CM02_t nw_link = (link_CM02_t)
  38     surf_resource_lmm_new(sizeof(s_link_CM02_t),
  39                           surf_network_model, name, properties,
  40                           network_maxmin_system,
  41                           sg_bandwidth_factor * bw_initial,
  42                           history,
  43                           state_initial, state_trace,
  44                           bw_initial, bw_trace);
  45
  46   xbt_assert1(!xbt_dict_get_or_null(surf_network_model->resource_set, name),
  47               "Link '%s' declared several times in the platform file.", name);
  48
  49   nw_link->lat_current = lat_initial;
  50   if (lat_trace)
  51     nw_link->lat_event =
  52       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  53
  54   if (policy == SURF_LINK_FATPIPE)
  55     lmm_constraint_shared(nw_link->lmm_resource.constraint);
  56
  57   xbt_dict_set(surf_network_model->resource_set, name, nw_link,
  58                surf_resource_free);
  59 #ifdef HAVE_TRACING
  60   TRACE_surf_link_declaration (name, bw_initial, lat_initial);
  61 #endif
  62
  63   return nw_link;
  64 }
  65
  66 static void net_parse_link_init(void)
  67 {
  68   char *name_link;
  69   double bw_initial;
  70   tmgr_trace_t bw_trace;
  71   double lat_initial;
  72   tmgr_trace_t lat_trace;
  73   e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
  74   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
  75   tmgr_trace_t state_trace;
  76
  77   name_link = xbt_strdup(A_surfxml_link_id);
  78   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
  79   bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
  80   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
  81   lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
  82
  83   xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
  84               || (A_surfxml_link_state ==
  85                   A_surfxml_link_state_OFF), "Invalid state");
  86   if (A_surfxml_link_state == A_surfxml_link_state_ON)
  87     state_initial_link = SURF_RESOURCE_ON;
  88   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
  89     state_initial_link = SURF_RESOURCE_OFF;
  90
  91   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
  92     policy_initial_link = SURF_LINK_SHARED;
  93   else if (A_surfxml_link_sharing_policy ==
  94            A_surfxml_link_sharing_policy_FATPIPE)
  95     policy_initial_link = SURF_LINK_FATPIPE;
  96
  97   state_trace = tmgr_trace_new(A_surfxml_link_state_file);
  98
  99   net_link_new(name_link, bw_initial, bw_trace,
 100            lat_initial, lat_trace, state_initial_link, state_trace,
 101            policy_initial_link, xbt_dict_new());
 102
 103 }
 104
 105 static void net_add_traces(void)
 106 {
 107   xbt_dict_cursor_t cursor = NULL;
 108   char *trace_name, *elm;
 109
 110   static int called = 0;
 111   if (called)
 112     return;
 113   called = 1;
 114
 115   /* connect all traces relative to network */
 116   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 117     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 118     link_CM02_t link =
 119       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 120
 121     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 122                 trace_name, elm);
 123     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 124                 trace_name, elm);
 125
 126     link->lmm_resource.state_event =
 127       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 128   }
 129
 130   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 131     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 132     link_CM02_t link =
 133       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 134
 135     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 136                 trace_name, elm);
 137     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 138                 trace_name, elm);
 139
 140     link->lmm_resource.power.event =
 141       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 142   }
 143
 144   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 145     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 146     link_CM02_t link =
 147       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 148
 149     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 150                 trace_name, elm);
 151     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 152                 trace_name, elm);
 153
 154     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 155   }
 156 }
 157
 158 static void net_define_callbacks(const char *file)
 159 {
 160   /* Figuring out the network links */
 161   surfxml_add_callback(STag_surfxml_link_cb_list, &net_parse_link_init);
 162   surfxml_add_callback(ETag_surfxml_platform_cb_list, &net_add_traces);
 163 }
 164
 165 static int net_resource_used(void *resource_id)
 166 {
 167   return lmm_constraint_used(network_maxmin_system,
 168                              ((surf_resource_lmm_t) resource_id)->constraint);
 169 }
 170
 171 static int net_action_unref(surf_action_t action)
 172 {
 173   action->refcount--;
 174   if (!action->refcount) {
 175     xbt_swag_remove(action, action->state_set);
 176     if (((surf_action_network_CM02_t) action)->variable)
 177       lmm_variable_free(network_maxmin_system,
 178                         ((surf_action_network_CM02_t) action)->variable);
 179     free(action);
 180     return 1;
 181   }
 182   return 0;
 183 }
 184
 185 static void net_action_cancel(surf_action_t action)
 186 {
 187   surf_network_model->action_state_set((surf_action_t) action,
 188                                        SURF_ACTION_FAILED);
 189   return;
 190 }
 191
 192 static void net_action_recycle(surf_action_t action)
 193 {
 194   return;
 195 }
 196
 197 static double net_action_get_remains(surf_action_t action)
 198 {
 199   return action->remains;
 200 }
 201
 202 static double net_share_resources(double now)
 203 {
 204   s_surf_action_network_CM02_t s_action;
 205   surf_action_network_CM02_t action = NULL;
 206   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 207   double min;
 208
 209   min = generic_maxmin_share_resources(running_actions,
 210                                        xbt_swag_offset(s_action,
 211                                                        variable),
 212                                        network_maxmin_system, network_solve);
 213
 214 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 215
 216   xbt_swag_foreach(action, running_actions) {
 217     if (action->latency > 0) {
 218       if (min < 0)
 219         min = action->latency;
 220       else if (action->latency < min)
 221         min = action->latency;
 222     }
 223   }
 224
 225   return min;
 226 }
 227
 228 static void net_update_actions_state(double now, double delta)
 229 {
 230   double deltap = 0.0;
 231   surf_action_network_CM02_t action = NULL;
 232   surf_action_network_CM02_t next_action = NULL;
 233   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 234   /*
 235      xbt_swag_t failed_actions =
 236      surf_network_model->states.failed_action_set;
 237    */
 238
 239   xbt_swag_foreach_safe(action, next_action, running_actions) {
 240
 241 #ifdef HAVE_TRACING
 242     xbt_dynar_t route = used_routing->get_route(action->src, action->dst);
 243     link_CM02_t link;
 244     unsigned int i;
 245     xbt_dynar_foreach(route, i, link) {
 246         TRACE_surf_link_set_utilization (link->lmm_resource.generic_resource.name,
 247           action->generic_action.data, lmm_variable_getvalue(action->variable), now-delta, delta);
 248     }
 249 #endif
 250
 251     deltap = delta;
 252     if (action->latency > 0) {
 253       if (action->latency > deltap) {
 254         double_update(&(action->latency), deltap);
 255         deltap = 0.0;
 256       } else {
 257         double_update(&(deltap), action->latency);
 258         action->latency = 0.0;
 259       }
 260       if ((action->latency == 0.0) && !(action->suspended))
 261         lmm_update_variable_weight(network_maxmin_system, action->variable,
 262                                    action->weight);
 263     }
 264     double_update(&(action->generic_action.remains),
 265                   lmm_variable_getvalue(action->variable) * deltap);
 266     if (action->generic_action.max_duration != NO_MAX_DURATION)
 267       double_update(&(action->generic_action.max_duration), delta);
 268
 269     if ((action->generic_action.remains <= 0) &&
 270         (lmm_get_variable_weight(action->variable) > 0)) {
 271       action->generic_action.finish = surf_get_clock();
 272       surf_network_model->action_state_set((surf_action_t) action,
 273                                            SURF_ACTION_DONE);
 274     } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
 275                && (action->generic_action.max_duration <= 0)) {
 276       action->generic_action.finish = surf_get_clock();
 277       surf_network_model->action_state_set((surf_action_t) action,
 278                                            SURF_ACTION_DONE);
 279     }
 280   }
 281
 282   return;
 283 }
 284
 285 static void net_update_resource_state(void *id,
 286                                   tmgr_trace_event_t event_type,
 287                                   double value, double date)
 288 {
 289   link_CM02_t nw_link = id;
 290   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 291   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 292   /*     value, event_type); */
 293
 294   if (event_type == nw_link->lmm_resource.power.event) {
 295     double delta =
 296       sg_weight_S_parameter / value - sg_weight_S_parameter /
 297       (nw_link->lmm_resource.power.peak * nw_link->lmm_resource.power.scale);
 298     lmm_variable_t var = NULL;
 299     lmm_element_t elem = NULL;
 300     surf_action_network_CM02_t action = NULL;
 301
 302     nw_link->lmm_resource.power.peak = value;
 303     lmm_update_constraint_bound(network_maxmin_system,
 304                                 nw_link->lmm_resource.constraint,
 305                                 sg_bandwidth_factor *
 306                                 (nw_link->lmm_resource.power.peak *
 307                                  nw_link->lmm_resource.power.scale));
 308 #ifdef HAVE_TRACING
 309     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));
 310 #endif
 311     if (sg_weight_S_parameter > 0) {
 312       while ((var = lmm_get_var_from_cnst
 313               (network_maxmin_system, nw_link->lmm_resource.constraint,
 314                &elem))) {
 315         action = lmm_variable_id(var);
 316         action->weight += delta;
 317         if (!(action->suspended))
 318           lmm_update_variable_weight(network_maxmin_system, action->variable,
 319                                      action->weight);
 320       }
 321     }
 322     if (tmgr_trace_event_free(event_type))
 323       nw_link->lmm_resource.power.event = NULL;
 324   } else if (event_type == nw_link->lat_event) {
 325     double delta = value - nw_link->lat_current;
 326     lmm_variable_t var = NULL;
 327     lmm_element_t elem = NULL;
 328     surf_action_network_CM02_t action = NULL;
 329
 330     nw_link->lat_current = value;
 331     while ((var = lmm_get_var_from_cnst
 332             (network_maxmin_system, nw_link->lmm_resource.constraint,
 333              &elem))) {
 334       action = lmm_variable_id(var);
 335       action->lat_current += delta;
 336       action->weight += delta;
 337       if (action->rate < 0)
 338         lmm_update_variable_bound(network_maxmin_system, action->variable,
 339                                   sg_tcp_gamma / (2.0 * action->lat_current));
 340       else
 341         lmm_update_variable_bound(network_maxmin_system, action->variable,
 342                                   min(action->rate,
 343                                       sg_tcp_gamma / (2.0 *
 344                                                       action->lat_current)));
 345       if (!(action->suspended))
 346         lmm_update_variable_weight(network_maxmin_system, action->variable,
 347                                    action->weight);
 348
 349     }
 350     if (tmgr_trace_event_free(event_type))
 351       nw_link->lat_event = NULL;
 352   } else if (event_type == nw_link->lmm_resource.state_event) {
 353     if (value > 0)
 354       nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
 355     else {
 356       lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
 357       lmm_variable_t var = NULL;
 358       lmm_element_t elem = NULL;
 359
 360       nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
 361       while ((var = lmm_get_var_from_cnst
 362               (network_maxmin_system, cnst, &elem))) {
 363         surf_action_t action = lmm_variable_id(var);
 364
 365         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 366             surf_action_state_get(action) == SURF_ACTION_READY) {
 367           action->finish = date;
 368           surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 369         }
 370       }
 371     }
 372     if (tmgr_trace_event_free(event_type))
 373       nw_link->lmm_resource.state_event = NULL;
 374   } else {
 375     CRITICAL0("Unknown event ! \n");
 376     xbt_abort();
 377   }
 378
 379   return;
 380 }
 381
 382 static surf_action_t net_communicate(const char *src_name, const char *dst_name,
 383                                  int src, int dst, double size, double rate)
 384 {
 385   surf_action_network_CM02_t action = NULL;
 386   /* LARGE PLATFORMS HACK:
 387      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 388      Use the cluster_id for ->id */
 389   xbt_dynar_t route = used_routing->get_route(src, dst);
 390   /* LARGE PLATFORMS HACK:
 391      total_route_size = route_size + src->link_nb + dst->nb */
 392   unsigned int i;
 393
 394   XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
 395   /* LARGE PLATFORMS HACK:
 396      assert on total_route_size */
 397   xbt_assert2(xbt_dynar_length(route),
 398               "You're trying to send data from %s to %s but there is no connection between these two hosts.",
 399               src_name, dst_name);
 400
 401   link_CM02_t link;
 402   int failed = 0;
 403   xbt_dynar_foreach(route, i, link) {
 404     if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
 405       failed = 1;
 406       break;
 407     }
 408   }
 409   action =
 410     surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
 411                     surf_network_model, failed);
 412
 413   xbt_swag_insert(action, action->generic_action.state_set);
 414   action->rate = rate;
 415
 416   action->latency = 0.0;
 417   action->weight = 0.0;
 418   xbt_dynar_foreach(route, i, link) {
 419     action->latency += link->lat_current;
 420     action->weight +=
 421       link->lat_current +
 422       sg_weight_S_parameter /
 423       (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 424   }
 425   /* LARGE PLATFORMS HACK:
 426      Add src->link and dst->link latencies */
 427   action->lat_current = action->latency;
 428   action->latency *= sg_latency_factor;
 429
 430   /* LARGE PLATFORMS HACK:
 431      lmm_variable_new(..., total_route_size) */
 432   if (action->latency > 0)
 433     action->variable =
 434       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 435                        xbt_dynar_length(route));
 436   else
 437     action->variable =
 438       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 439                        xbt_dynar_length(route));
 440
 441   if (action->rate < 0) {
 442     if (action->lat_current > 0)
 443       lmm_update_variable_bound(network_maxmin_system, action->variable,
 444                                 sg_tcp_gamma / (2.0 * action->lat_current));
 445     else
 446       lmm_update_variable_bound(network_maxmin_system, action->variable,
 447                                 -1.0);
 448   } else {
 449     if (action->lat_current > 0)
 450       lmm_update_variable_bound(network_maxmin_system, action->variable,
 451                                 min(action->rate,
 452                                     sg_tcp_gamma / (2.0 *
 453                                                     action->lat_current)));
 454     else
 455       lmm_update_variable_bound(network_maxmin_system, action->variable,
 456                                 action->rate);
 457   }
 458
 459   xbt_dynar_foreach(route, i, link) {
 460     lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 461                action->variable, 1.0);
 462   }
 463   /* LARGE PLATFORMS HACK:
 464      expand also with src->link and dst->link */
 465
 466   /* saving the src and dst of this communication */
 467   action->src = src;
 468   action->dst = dst;
 469
 470   XBT_OUT;
 471
 472   return (surf_action_t) action;
 473 }
 474
 475 static double net_get_link_bandwidth(const void *link)
 476 {
 477   surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
 478   return lmm->power.peak * lmm->power.scale;
 479 }
 480
 481 static double net_get_link_latency(const void *link)
 482 {
 483   return ((link_CM02_t) link)->lat_current;
 484 }
 485
 486 static int net_link_shared(const void *link)
 487 {
 488   return lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
 489 }
 490
 491 static void net_action_suspend(surf_action_t action)
 492 {
 493   ((surf_action_network_CM02_t) action)->suspended = 1;
 494   lmm_update_variable_weight(network_maxmin_system,
 495                              ((surf_action_network_CM02_t) action)->variable,
 496                              0.0);
 497 }
 498
 499 static void net_action_resume(surf_action_t action)
 500 {
 501   if (((surf_action_network_CM02_t) action)->suspended) {
 502     lmm_update_variable_weight(network_maxmin_system,
 503                                ((surf_action_network_CM02_t)
 504                                 action)->variable,
 505                                ((surf_action_network_CM02_t) action)->weight);
 506     ((surf_action_network_CM02_t) action)->suspended = 0;
 507   }
 508 }
 509
 510 static int net_action_is_suspended(surf_action_t action)
 511 {
 512   return ((surf_action_network_CM02_t) action)->suspended;
 513 }
 514
 515 static void net_action_set_max_duration(surf_action_t action, double duration)
 516 {
 517   action->max_duration = duration;
 518 }
 519
 520 static void net_finalize(void)
 521 {
 522   surf_model_exit(surf_network_model);
 523   surf_network_model = NULL;
 524
 525   used_routing->finalize();
 526   lmm_system_free(network_maxmin_system);
 527   network_maxmin_system = NULL;
 528 }
 529
 530 static void surf_network_model_init_internal(void)
 531 {
 532   surf_network_model = surf_model_init();
 533
 534   surf_network_model->name = "network";
 535   surf_network_model->action_unref = net_action_unref;
 536   surf_network_model->action_cancel = net_action_cancel;
 537   surf_network_model->action_recycle = net_action_recycle;
 538   surf_network_model->get_remains = net_action_get_remains;
 539
 540   surf_network_model->model_private->resource_used = net_resource_used;
 541   surf_network_model->model_private->share_resources = net_share_resources;
 542   surf_network_model->model_private->update_actions_state =
 543     net_update_actions_state;
 544   surf_network_model->model_private->update_resource_state =
 545     net_update_resource_state;
 546   surf_network_model->model_private->finalize = net_finalize;
 547
 548   surf_network_model->suspend = net_action_suspend;
 549   surf_network_model->resume = net_action_resume;
 550   surf_network_model->is_suspended = net_action_is_suspended;
 551   surf_cpu_model->set_max_duration = net_action_set_max_duration;
 552
 553   surf_network_model->extension.network.communicate = net_communicate;
 554   surf_network_model->extension.network.get_link_bandwidth =
 555     net_get_link_bandwidth;
 556   surf_network_model->extension.network.get_link_latency = net_get_link_latency;
 557   surf_network_model->extension.network.link_shared = net_link_shared;
 558
 559   if (!network_maxmin_system)
 560     network_maxmin_system = lmm_system_new();
 561
 562   routing_model_create(sizeof(link_CM02_t),
 563                        net_link_new(xbt_strdup("__loopback__"),
 564                                 498000000, NULL, 0.000015, NULL,
 565                                 SURF_RESOURCE_ON, NULL, SURF_LINK_FATPIPE,
 566                                 NULL));
 567 }
 568
 569 /************************************************************************/
 570 /* New model based on optimizations discussed during this thesis        */
 571 /************************************************************************/
 572 void surf_network_model_init_LegrandVelho(const char *filename)
 573 {
 574
 575   if (surf_network_model)
 576     return;
 577   surf_network_model_init_internal();
 578   net_define_callbacks(filename);
 579   xbt_dynar_push(model_list, &surf_network_model);
 580   network_solve = lmm_solve;
 581
 582   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor",10.4);
 583   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 584   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 585
 586   update_model_description(surf_network_model_description,
 587                            "LV08", surf_network_model);
 588 }
 589
 590 /***************************************************************************/
 591 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 592 /***************************************************************************/
 593 /* @TechReport{      rr-lip2002-40, */
 594 /*   author        = {Henri Casanova and Loris Marchal}, */
 595 /*   institution   = {LIP}, */
 596 /*   title         = {A Network Model for Simulation of Grid Application}, */
 597 /*   number        = {2002-40}, */
 598 /*   month         = {oct}, */
 599 /*   year          = {2002} */
 600 /* } */
 601 void surf_network_model_init_CM02(const char *filename)
 602 {
 603
 604   if (surf_network_model)
 605     return;
 606   surf_network_model_init_internal();
 607   net_define_callbacks(filename);
 608   xbt_dynar_push(model_list, &surf_network_model);
 609   network_solve = lmm_solve;
 610
 611   update_model_description(surf_network_model_description,
 612                            "CM02", surf_network_model);
 613 }
 614
 615 void surf_network_model_init_Reno(const char *filename)
 616 {
 617   if (surf_network_model)
 618     return;
 619   surf_network_model_init_internal();
 620   net_define_callbacks(filename);
 621
 622   xbt_dynar_push(model_list, &surf_network_model);
 623   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 624   network_solve = lagrange_solve;
 625
 626   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 627   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 628   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 629
 630   update_model_description(surf_network_model_description,
 631                            "Reno", surf_network_model);
 632 }
 633
 634
 635 void surf_network_model_init_Reno2(const char *filename)
 636 {
 637   if (surf_network_model)
 638     return;
 639   surf_network_model_init_internal();
 640   net_define_callbacks(filename);
 641
 642   xbt_dynar_push(model_list, &surf_network_model);
 643   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 644                                     func_reno2_fpi);
 645   network_solve = lagrange_solve;
 646
 647   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 648   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 649   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S_parameter", 8775);
 650
 651   update_model_description(surf_network_model_description,
 652                            "Reno2", surf_network_model);
 653 }
 654
 655 void surf_network_model_init_Vegas(const char *filename)
 656 {
 657   if (surf_network_model)
 658     return;
 659   surf_network_model_init_internal();
 660   net_define_callbacks(filename);
 661
 662   xbt_dynar_push(model_list, &surf_network_model);
 663   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 664                                     func_vegas_fpi);
 665   network_solve = lagrange_solve;
 666
 667   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 668   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 669   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 670
 671   update_model_description(surf_network_model_description,
 672                            "Vegas", surf_network_model);
 673 }