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_free(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_use(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 void network_action_state_set(surf_action_t action,
 333                                 e_surf_action_state_t state)
 334 {
 335 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 336 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 337 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 338 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 339 /*     } */
 340
 341   surf_action_state_set(action, state);
 342   return;
 343 }
 344
 345 static double share_resources(double now)
 346 {
 347   s_surf_action_network_CM02_t s_action;
 348   surf_action_network_CM02_t action = NULL;
 349   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 350   double min;
 351
 352   min = generic_maxmin_share_resources(running_actions,
 353                                        xbt_swag_offset(s_action,
 354                                                        variable),
 355                                        network_maxmin_system, network_solve);
 356
 357 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 358
 359   xbt_swag_foreach(action, running_actions) {
 360     if (action->latency > 0) {
 361       if (min < 0)
 362         min = action->latency;
 363       else if (action->latency < min)
 364         min = action->latency;
 365     }
 366   }
 367
 368   return min;
 369 }
 370
 371 static void update_actions_state(double now, double delta)
 372 {
 373   double deltap = 0.0;
 374   surf_action_network_CM02_t action = NULL;
 375   surf_action_network_CM02_t next_action = NULL;
 376   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 377   /*
 378      xbt_swag_t failed_actions =
 379      surf_network_model->states.failed_action_set;
 380    */
 381
 382   xbt_swag_foreach_safe(action, next_action, running_actions) {
 383     deltap = delta;
 384     if (action->latency > 0) {
 385       if (action->latency > deltap) {
 386         double_update(&(action->latency), deltap);
 387         deltap = 0.0;
 388       } else {
 389         double_update(&(deltap), action->latency);
 390         action->latency = 0.0;
 391       }
 392       if ((action->latency == 0.0) && !(action->suspended))
 393         lmm_update_variable_weight(network_maxmin_system, action->variable,
 394                                    action->weight);
 395     }
 396     double_update(&(action->generic_action.remains),
 397                   lmm_variable_getvalue(action->variable) * deltap);
 398     if (action->generic_action.max_duration != NO_MAX_DURATION)
 399       double_update(&(action->generic_action.max_duration), delta);
 400
 401     if ((action->generic_action.remains <= 0) &&
 402         (lmm_get_variable_weight(action->variable) > 0)) {
 403       action->generic_action.finish = surf_get_clock();
 404       network_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 405     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 406                (action->generic_action.max_duration <= 0)) {
 407       action->generic_action.finish = surf_get_clock();
 408       network_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 409     }
 410   }
 411
 412   return;
 413 }
 414
 415 static void update_resource_state(void *id,
 416                                   tmgr_trace_event_t event_type,
 417                                   double value, double date)
 418 {
 419   link_CM02_t nw_link = id;
 420   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 421   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 422   /*     value, event_type); */
 423
 424   if (event_type == nw_link->bw_event) {
 425     double delta =
 426       weight_S_parameter / value - weight_S_parameter / nw_link->bw_current;
 427     lmm_variable_t var = NULL;
 428     lmm_element_t elem = NULL;
 429     surf_action_network_CM02_t action = NULL;
 430
 431     nw_link->bw_current = value;
 432     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 433                                 bandwidth_factor * nw_link->bw_current);
 434     if (weight_S_parameter > 0) {
 435       while ((var = lmm_get_var_from_cnst
 436               (network_maxmin_system, nw_link->constraint, &elem))) {
 437         action = lmm_variable_id(var);
 438         action->weight += delta;
 439         if (!(action->suspended))
 440           lmm_update_variable_weight(network_maxmin_system, action->variable,
 441                                      action->weight);
 442       }
 443     }
 444   } else if (event_type == nw_link->lat_event) {
 445     double delta = value - nw_link->lat_current;
 446     lmm_variable_t var = NULL;
 447     lmm_element_t elem = NULL;
 448     surf_action_network_CM02_t action = NULL;
 449
 450     nw_link->lat_current = value;
 451     while ((var = lmm_get_var_from_cnst
 452             (network_maxmin_system, nw_link->constraint, &elem))) {
 453       action = lmm_variable_id(var);
 454       action->lat_current += delta;
 455       action->weight += delta;
 456       if (action->rate < 0)
 457         lmm_update_variable_bound(network_maxmin_system, action->variable,
 458                                   sg_tcp_gamma / (2.0 * action->lat_current));
 459       else
 460         lmm_update_variable_bound(network_maxmin_system, action->variable,
 461                                   min(action->rate,
 462                                       sg_tcp_gamma / (2.0 *
 463                                                       action->lat_current)));
 464       if (!(action->suspended))
 465         lmm_update_variable_weight(network_maxmin_system, action->variable,
 466                                    action->weight);
 467
 468     }
 469   } else if (event_type == nw_link->state_event) {
 470     if (value > 0)
 471       nw_link->state_current = SURF_LINK_ON;
 472     else {
 473       lmm_constraint_t cnst = nw_link->constraint;
 474       lmm_variable_t var = NULL;
 475       lmm_element_t elem = NULL;
 476
 477       nw_link->state_current = SURF_LINK_OFF;
 478       while ((var = lmm_get_var_from_cnst
 479               (network_maxmin_system, cnst, &elem))) {
 480         surf_action_t action = lmm_variable_id(var);
 481
 482         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 483             surf_action_state_get(action) == SURF_ACTION_READY) {
 484           action->finish = date;
 485           network_action_state_set(action, SURF_ACTION_FAILED);
 486         }
 487       }
 488     }
 489   } else {
 490     CRITICAL0("Unknown event ! \n");
 491     xbt_abort();
 492   }
 493
 494   return;
 495 }
 496
 497 static surf_action_t communicate(void *src, void *dst, double size,
 498                                  double rate)
 499 {
 500   surf_action_network_CM02_t action = NULL;
 501   /* LARGE PLATFORMS HACK:
 502      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 503      Use the cluster_id for ->id */
 504   network_card_CM02_t card_src = src;
 505   network_card_CM02_t card_dst = dst;
 506   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 507   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 508   /* LARGE PLATFORMS HACK:
 509      total_route_size = route_size + src->link_nb + dst->nb */
 510   int i;
 511
 512   XBT_IN4("(%s,%s,%g,%g)", card_src->generic_resource.name, card_dst->generic_resource.name, size, rate);
 513   /* LARGE PLATFORMS HACK:
 514      assert on total_route_size */
 515   xbt_assert2(route_size,
 516               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 517               card_src->generic_resource.name, card_dst->generic_resource.name);
 518
 519   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 520
 521   action->generic_action.refcount = 1;
 522   action->generic_action.cost = size;
 523   action->generic_action.remains = size;
 524   action->generic_action.max_duration = NO_MAX_DURATION;
 525   action->generic_action.start = surf_get_clock();
 526   action->generic_action.finish = -1.0;
 527   action->generic_action.model_type = surf_network_model;
 528   action->suspended = 0;        /* Should be useless because of the
 529                                    calloc but it seems to help valgrind... */
 530   action->generic_action.state_set =
 531     surf_network_model->states.running_action_set;
 532   for (i = 0; i < route_size; i++)
 533     if (route[i]->state_current == SURF_LINK_OFF) {
 534       action->generic_action.state_set =
 535         surf_network_model->states.failed_action_set;
 536       break;
 537     }
 538
 539   xbt_swag_insert(action, action->generic_action.state_set);
 540   action->rate = rate;
 541
 542   action->latency = 0.0;
 543   action->weight = 0.0;
 544   for (i = 0; i < route_size; i++) {
 545     action->latency += route[i]->lat_current;
 546     action->weight +=
 547       route[i]->lat_current + weight_S_parameter / route[i]->bw_current;
 548   }
 549   /* LARGE PLATFORMS HACK:
 550      Add src->link and dst->link latencies */
 551   action->lat_current = action->latency;
 552   action->latency *= latency_factor;
 553
 554   /* LARGE PLATFORMS HACK:
 555      lmm_variable_new(..., total_route_size) */
 556   if (action->latency > 0)
 557     action->variable =
 558       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0, route_size);
 559   else
 560     action->variable =
 561       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0, route_size);
 562
 563   if (action->rate < 0) {
 564     if (action->lat_current > 0)
 565       lmm_update_variable_bound(network_maxmin_system, action->variable,
 566                                 sg_tcp_gamma / (2.0 * action->lat_current));
 567     else
 568       lmm_update_variable_bound(network_maxmin_system, action->variable,
 569                                 -1.0);
 570   } else {
 571     if (action->lat_current > 0)
 572       lmm_update_variable_bound(network_maxmin_system, action->variable,
 573                                 min(action->rate,
 574                                     sg_tcp_gamma / (2.0 *
 575                                                     action->lat_current)));
 576     else
 577       lmm_update_variable_bound(network_maxmin_system, action->variable,
 578                                 action->rate);
 579   }
 580
 581   for (i = 0; i < route_size; i++)
 582     lmm_expand(network_maxmin_system, route[i]->constraint,
 583                action->variable, 1.0);
 584   /* LARGE PLATFORMS HACK:
 585      expand also with src->link and dst->link */
 586
 587   XBT_OUT;
 588
 589   return (surf_action_t) action;
 590 }
 591
 592 /* returns an array of link_CM02_t */
 593 static const void **get_route(void *src, void *dst)
 594 {
 595   network_card_CM02_t card_src = src;
 596   network_card_CM02_t card_dst = dst;
 597   return (const void **) ROUTE(card_src->id, card_dst->id);
 598 }
 599
 600 static int get_route_size(void *src, void *dst)
 601 {
 602   network_card_CM02_t card_src = src;
 603   network_card_CM02_t card_dst = dst;
 604   return ROUTE_SIZE(card_src->id, card_dst->id);
 605 }
 606
 607 static double get_link_bandwidth(const void *link)
 608 {
 609   return ((link_CM02_t) link)->bw_current;
 610 }
 611
 612 static double get_link_latency(const void *link)
 613 {
 614   return ((link_CM02_t) link)->lat_current;
 615 }
 616
 617 static int link_shared(const void *link)
 618 {
 619   return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
 620 }
 621
 622 static xbt_dict_t get_properties(void *link)
 623 {
 624   return ((link_CM02_t) link)->properties;
 625 }
 626
 627 static void action_suspend(surf_action_t action)
 628 {
 629   ((surf_action_network_CM02_t) action)->suspended = 1;
 630   lmm_update_variable_weight(network_maxmin_system,
 631                              ((surf_action_network_CM02_t) action)->variable,
 632                              0.0);
 633 }
 634
 635 static void action_resume(surf_action_t action)
 636 {
 637   if (((surf_action_network_CM02_t) action)->suspended) {
 638     lmm_update_variable_weight(network_maxmin_system,
 639                                ((surf_action_network_CM02_t)
 640                                 action)->variable,
 641                                ((surf_action_network_CM02_t) action)->weight);
 642     ((surf_action_network_CM02_t) action)->suspended = 0;
 643   }
 644 }
 645
 646 static int action_is_suspended(surf_action_t action)
 647 {
 648   return ((surf_action_network_CM02_t) action)->suspended;
 649 }
 650
 651 static void action_set_max_duration(surf_action_t action, double duration)
 652 {
 653   action->max_duration = duration;
 654 }
 655
 656 static void finalize(void)
 657 {
 658   int i, j;
 659
 660   xbt_dict_free(&link_set);
 661
 662   surf_model_exit(surf_network_model);
 663   surf_network_model = NULL;
 664
 665   loopback = NULL;
 666   for (i = 0; i < host_number; i++)
 667     for (j = 0; j < host_number; j++)
 668       free(ROUTE(i, j));
 669   free(routing_table);
 670   routing_table = NULL;
 671   free(routing_table_size);
 672   routing_table_size = NULL;
 673   host_number = 0;
 674   lmm_system_free(network_maxmin_system);
 675   network_maxmin_system = NULL;
 676 }
 677
 678 static void surf_network_model_init_internal(void)
 679 {
 680   surf_network_model = surf_model_init();
 681
 682   surf_network_model->name = "network";
 683   surf_network_model->action_free = action_free;
 684   surf_network_model->action_use = action_use;
 685   surf_network_model->action_cancel = action_cancel;
 686   surf_network_model->action_recycle = action_recycle;
 687   surf_network_model->action_state_set = network_action_state_set;
 688
 689   surf_network_model->model_private->resource_used = resource_used;
 690   surf_network_model->model_private->share_resources = share_resources;
 691   surf_network_model->model_private->update_actions_state =
 692     update_actions_state;
 693   surf_network_model->model_private->update_resource_state =
 694     update_resource_state;
 695   surf_network_model->model_private->finalize = finalize;
 696
 697   surf_network_model->suspend = action_suspend;
 698   surf_network_model->resume = action_resume;
 699   surf_network_model->is_suspended = action_is_suspended;
 700   surf_cpu_model->set_max_duration = action_set_max_duration;
 701
 702   surf_network_model->extension.network.communicate = communicate;
 703   surf_network_model->extension.network.get_route = get_route;
 704   surf_network_model->extension.network.get_route_size = get_route_size;
 705   surf_network_model->extension.network.get_link_bandwidth =
 706     get_link_bandwidth;
 707   surf_network_model->extension.network.get_link_latency = get_link_latency;
 708   surf_network_model->extension.network.link_shared = link_shared;
 709
 710   surf_network_model->get_properties = get_properties;
 711
 712   link_set = xbt_dict_new();
 713
 714   if (!network_maxmin_system)
 715     network_maxmin_system = lmm_system_new();
 716 }
 717
 718 /************************************************************************/
 719 /* New model based on optimizations discussed during this thesis        */
 720 /************************************************************************/
 721 void surf_network_model_init_LegrandVelho(const char *filename)
 722 {
 723
 724   if (surf_network_model)
 725     return;
 726   surf_network_model_init_internal();
 727   define_callbacks(filename);
 728   xbt_dynar_push(model_list, &surf_network_model);
 729   network_solve = lmm_solve;
 730
 731   latency_factor = 10.4;
 732   bandwidth_factor = 0.92;
 733   weight_S_parameter = 8775;
 734
 735   update_model_description(surf_network_model_description,
 736                            "LegrandVelho", surf_network_model);
 737 }
 738
 739 /***************************************************************************/
 740 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 741 /***************************************************************************/
 742 /* @TechReport{      rr-lip2002-40, */
 743 /*   author        = {Henri Casanova and Loris Marchal}, */
 744 /*   institution   = {LIP}, */
 745 /*   title         = {A Network Model for Simulation of Grid Application}, */
 746 /*   number        = {2002-40}, */
 747 /*   month         = {oct}, */
 748 /*   year          = {2002} */
 749 /* } */
 750 void surf_network_model_init_CM02(const char *filename)
 751 {
 752
 753   if (surf_network_model)
 754     return;
 755   surf_network_model_init_internal();
 756   define_callbacks(filename);
 757   xbt_dynar_push(model_list, &surf_network_model);
 758   network_solve = lmm_solve;
 759
 760   update_model_description(surf_network_model_description,
 761                            "CM02", surf_network_model);
 762 }
 763
 764 void surf_network_model_init_Reno(const char *filename)
 765 {
 766   if (surf_network_model)
 767     return;
 768   surf_network_model_init_internal();
 769   define_callbacks(filename);
 770
 771   xbt_dynar_push(model_list, &surf_network_model);
 772   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 773   network_solve = lagrange_solve;
 774
 775   latency_factor = 10.4;
 776   bandwidth_factor = 0.92;
 777   weight_S_parameter = 8775;
 778
 779   update_model_description(surf_network_model_description,
 780                            "Reno", surf_network_model);
 781 }
 782
 783
 784 void surf_network_model_init_Reno2(const char *filename)
 785 {
 786   if (surf_network_model)
 787     return;
 788   surf_network_model_init_internal();
 789   define_callbacks(filename);
 790
 791   xbt_dynar_push(model_list, &surf_network_model);
 792   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 793                                     func_reno2_fpi);
 794   network_solve = lagrange_solve;
 795
 796   latency_factor = 10.4;
 797   bandwidth_factor = 0.92;
 798   weight_S_parameter = 8775;
 799
 800   update_model_description(surf_network_model_description,
 801                            "Reno2", surf_network_model);
 802 }
 803
 804 void surf_network_model_init_Vegas(const char *filename)
 805 {
 806   if (surf_network_model)
 807     return;
 808   surf_network_model_init_internal();
 809   define_callbacks(filename);
 810
 811   xbt_dynar_push(model_list, &surf_network_model);
 812   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 813                                     func_vegas_fpi);
 814   network_solve = lagrange_solve;
 815
 816   latency_factor = 10.4;
 817   bandwidth_factor = 0.92;
 818   weight_S_parameter = 8775;
 819
 820   update_model_description(surf_network_model_description,
 821                            "Vegas", surf_network_model);
 822 }
 823
 824 #ifdef HAVE_SDP
 825 void surf_network_model_init_SDP(const char *filename)
 826 {
 827   if (surf_network_model)
 828     return;
 829   surf_network_model_init_internal();
 830   define_callbacks(filename);
 831
 832   xbt_dynar_push(model_list, &surf_network_model);
 833   network_solve = sdp_solve;
 834
 835   update_model_description(surf_network_model_description,
 836                            "SDP", surf_network_model);
 837 }
 838 #endif