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 int sg_network_fullduplex = 0;
  24
  25
  26 /******************************************************************************/
  27 /*                           Factors callbacks                                */
  28 /******************************************************************************/
  29 static double constant_latency_factor(double size)
  30 {
  31   return sg_latency_factor;
  32 }
  33
  34 static double constant_bandwidth_factor(double size)
  35 {
  36   return sg_bandwidth_factor;
  37 }
  38
  39 static double constant_bandwidth_constraint(double rate, double bound, double size)
  40 {
  41   return rate;
  42 }
  43
  44 /**********************/
  45 /*   SMPI callbacks   */
  46 /**********************/
  47 static double smpi_latency_factor(double size)
  48 {
  49   /* 1 B <= size <= 1 KiB */
  50   if (size <= 1024.0) {
  51     return 1.0056;
  52   }
  53
  54   /* 2 KiB <= size <= 32 KiB */
  55   if (size <= 32768.0) {
  56     return 1.8805;
  57   }
  58
  59   /* 64 KiB <= size <= 4 MiB */
  60   return 22.7111;
  61 }
  62
  63 static double smpi_bandwidth_factor(double size)
  64 {
  65   /* 1 B <= size <= 1 KiB */
  66   if (size <= 1024.0) {
  67     return 0.2758;
  68   }
  69
  70   /* 2 KiB <= size <= 32 KiB */
  71   if (size <= 32768.0) {
  72     return 0.5477;
  73   }
  74
  75   /* 64 KiB <= size <= 4 MiB */
  76   return 0.9359;
  77 }
  78
  79 static double smpi_bandwidth_constraint(double rate, double bound, double size)
  80 {
  81   return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
  82 }
  83
  84
  85 static double (*latency_factor_callback)(double) = &constant_latency_factor;
  86 static double (*bandwidth_factor_callback)(double) = &constant_bandwidth_factor;
  87 static double (*bandwidth_constraint_callback)(double, double, double) = &constant_bandwidth_constraint;
  88
  89
  90 static link_CM02_t net_link_new(char *name,
  91                             double bw_initial,
  92                             tmgr_trace_t bw_trace,
  93                             double lat_initial,
  94                             tmgr_trace_t lat_trace,
  95                             e_surf_resource_state_t
  96                             state_initial,
  97                             tmgr_trace_t state_trace,
  98                             e_surf_link_sharing_policy_t
  99                             policy, xbt_dict_t properties)
 100 {
 101   link_CM02_t nw_link = (link_CM02_t)
 102     surf_resource_lmm_new(sizeof(s_link_CM02_t),
 103                           surf_network_model, name, properties,
 104                           network_maxmin_system,
 105                           sg_bandwidth_factor * bw_initial,
 106                           history,
 107                           state_initial, state_trace,
 108                           bw_initial, bw_trace);
 109
 110   xbt_assert1(!xbt_dict_get_or_null(surf_network_model->resource_set, name),
 111               "Link '%s' declared several times in the platform file.", name);
 112
 113   nw_link->lat_current = lat_initial;
 114   if (lat_trace)
 115     nw_link->lat_event =
 116       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
 117
 118   if (policy == SURF_LINK_FATPIPE)
 119     lmm_constraint_shared(nw_link->lmm_resource.constraint);
 120
 121   xbt_dict_set(surf_network_model->resource_set, name, nw_link,
 122                surf_resource_free);
 123 #ifdef HAVE_TRACING
 124   TRACE_surf_link_declaration (name, bw_initial, lat_initial);
 125 #endif
 126
 127   return nw_link;
 128 }
 129
 130 static void net_parse_link_init(void)
 131 {
 132   char *name_link;
 133   double bw_initial;
 134   tmgr_trace_t bw_trace;
 135   double lat_initial;
 136   tmgr_trace_t lat_trace;
 137   e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
 138   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 139   tmgr_trace_t state_trace;
 140
 141   name_link = xbt_strdup(A_surfxml_link_id);
 142   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 143   bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
 144   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 145   lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
 146
 147   xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
 148               || (A_surfxml_link_state ==
 149                   A_surfxml_link_state_OFF), "Invalid state");
 150   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 151     state_initial_link = SURF_RESOURCE_ON;
 152   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
 153     state_initial_link = SURF_RESOURCE_OFF;
 154
 155   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
 156     policy_initial_link = SURF_LINK_SHARED;
 157   else if (A_surfxml_link_sharing_policy ==
 158            A_surfxml_link_sharing_policy_FATPIPE)
 159     policy_initial_link = SURF_LINK_FATPIPE;
 160
 161   state_trace = tmgr_trace_new(A_surfxml_link_state_file);
 162
 163   net_link_new(name_link, bw_initial, bw_trace,
 164            lat_initial, lat_trace, state_initial_link, state_trace,
 165            policy_initial_link, xbt_dict_new());
 166
 167 }
 168
 169 static void net_create_resource(char *name,
 170         double bw_initial,
 171         tmgr_trace_t bw_trace,
 172         double lat_initial,
 173         tmgr_trace_t lat_trace,
 174         e_surf_resource_state_t
 175         state_initial,
 176         tmgr_trace_t state_trace,
 177         e_surf_link_sharing_policy_t policy,
 178         xbt_dict_t properties)
 179 {
 180         net_link_new(name, bw_initial, bw_trace,
 181                    lat_initial, lat_trace, state_initial, state_trace,
 182                    policy, xbt_dict_new());
 183 }
 184 static void net_add_traces(void)
 185 {
 186   xbt_dict_cursor_t cursor = NULL;
 187   char *trace_name, *elm;
 188
 189   static int called = 0;
 190   if (called)
 191     return;
 192   called = 1;
 193
 194   /* connect all traces relative to network */
 195   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 196     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 197     link_CM02_t link =
 198       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 199
 200     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 201                 trace_name, elm);
 202     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 203                 trace_name, elm);
 204
 205     link->lmm_resource.state_event =
 206       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 207   }
 208
 209   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 210     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 211     link_CM02_t link =
 212       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 213
 214     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 215                 trace_name, elm);
 216     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 217                 trace_name, elm);
 218
 219     link->lmm_resource.power.event =
 220       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 221   }
 222
 223   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 224     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 225     link_CM02_t link =
 226       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 227
 228     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 229                 trace_name, elm);
 230     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 231                 trace_name, elm);
 232
 233     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 234   }
 235 }
 236
 237 static void net_define_callbacks(const char *file)
 238 {
 239   /* Figuring out the network links */
 240   surfxml_add_callback(STag_surfxml_link_cb_list, &net_parse_link_init);
 241   surfxml_add_callback(ETag_surfxml_platform_cb_list, &net_add_traces);
 242 }
 243
 244 static int net_resource_used(void *resource_id)
 245 {
 246   return lmm_constraint_used(network_maxmin_system,
 247                              ((surf_resource_lmm_t) resource_id)->constraint);
 248 }
 249
 250 static int net_action_unref(surf_action_t action)
 251 {
 252   action->refcount--;
 253   if (!action->refcount) {
 254     xbt_swag_remove(action, action->state_set);
 255     if (((surf_action_network_CM02_t) action)->variable)
 256       lmm_variable_free(network_maxmin_system,
 257                         ((surf_action_network_CM02_t) action)->variable);
 258     free(action);
 259     return 1;
 260   }
 261   return 0;
 262 }
 263
 264 static void net_action_cancel(surf_action_t action)
 265 {
 266   surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 267 }
 268
 269 void net_action_recycle(surf_action_t action)
 270 {
 271   return;
 272 }
 273
 274 int net_get_link_latency(surf_action_t action)
 275 {
 276   return action->latency_limited;
 277 }
 278
 279 double net_action_get_remains(surf_action_t action)
 280 {
 281   return action->remains;
 282 }
 283
 284 static double net_share_resources(double now)
 285 {
 286   s_surf_action_network_CM02_t s_action;
 287   surf_action_network_CM02_t action = NULL;
 288   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 289   double min;
 290
 291   min = generic_maxmin_share_resources(running_actions,
 292                                        xbt_swag_offset(s_action,
 293                                                        variable),
 294                                        network_maxmin_system, network_solve);
 295
 296 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 297
 298   xbt_swag_foreach(action, running_actions) {
 299         if( lmm_is_variable_limited_by_latency(action->variable) ){
 300                 (action->generic_action).latency_limited = 1;
 301         }else{
 302                 (action->generic_action).latency_limited = 0;
 303         }
 304     if (action->latency > 0) {
 305       if (min < 0)
 306         min = action->latency;
 307       else if (action->latency < min)
 308         min = action->latency;
 309     }
 310   }
 311
 312   return min;
 313 }
 314
 315 static void net_update_actions_state(double now, double delta)
 316 {
 317   double deltap = 0.0;
 318   surf_action_network_CM02_t action = NULL;
 319   surf_action_network_CM02_t next_action = NULL;
 320   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 321   /*
 322      xbt_swag_t failed_actions =
 323      surf_network_model->states.failed_action_set;
 324    */
 325
 326   xbt_swag_foreach_safe(action, next_action, running_actions) {
 327     deltap = delta;
 328     if (action->latency > 0) {
 329       if (action->latency > deltap) {
 330         double_update(&(action->latency), deltap);
 331         deltap = 0.0;
 332       } else {
 333         double_update(&(deltap), action->latency);
 334         action->latency = 0.0;
 335       }
 336       if ((action->latency == 0.0) && !(action->suspended))
 337         lmm_update_variable_weight(network_maxmin_system, action->variable,
 338                                    action->weight);
 339     }
 340 #ifdef HAVE_TRACING
 341     xbt_dynar_t route = used_routing->get_route(action->src, action->dst);
 342     link_CM02_t link;
 343     unsigned int i;
 344     xbt_dynar_foreach(route, i, link) {
 345       TRACE_surf_link_set_utilization (link->lmm_resource.generic_resource.name,
 346           action->generic_action.data, lmm_variable_getvalue(action->variable), now-delta, delta);
 347     }
 348 #endif
 349     double_update(&(action->generic_action.remains),
 350                   lmm_variable_getvalue(action->variable) * deltap);
 351     if (action->generic_action.max_duration != NO_MAX_DURATION)
 352       double_update(&(action->generic_action.max_duration), delta);
 353
 354     if ((action->generic_action.remains <= 0) &&
 355         (lmm_get_variable_weight(action->variable) > 0)) {
 356       action->generic_action.finish = surf_get_clock();
 357       surf_network_model->action_state_set((surf_action_t) action,
 358                                            SURF_ACTION_DONE);
 359     } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
 360                && (action->generic_action.max_duration <= 0)) {
 361       action->generic_action.finish = surf_get_clock();
 362       surf_network_model->action_state_set((surf_action_t) action,
 363                                            SURF_ACTION_DONE);
 364     }
 365   }
 366
 367   return;
 368 }
 369
 370 static void net_update_resource_state(void *id,
 371                                   tmgr_trace_event_t event_type,
 372                                   double value, double date)
 373 {
 374   link_CM02_t nw_link = id;
 375   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 376   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 377   /*     value, event_type); */
 378
 379   if (event_type == nw_link->lmm_resource.power.event) {
 380     double delta =
 381       sg_weight_S_parameter / value - sg_weight_S_parameter /
 382       (nw_link->lmm_resource.power.peak * nw_link->lmm_resource.power.scale);
 383     lmm_variable_t var = NULL;
 384     lmm_element_t elem = NULL;
 385     surf_action_network_CM02_t action = NULL;
 386
 387     nw_link->lmm_resource.power.peak = value;
 388     lmm_update_constraint_bound(network_maxmin_system,
 389                                 nw_link->lmm_resource.constraint,
 390                                 sg_bandwidth_factor *
 391                                 (nw_link->lmm_resource.power.peak *
 392                                  nw_link->lmm_resource.power.scale));
 393 #ifdef HAVE_TRACING
 394     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));
 395 #endif
 396     if (sg_weight_S_parameter > 0) {
 397       while ((var = lmm_get_var_from_cnst
 398               (network_maxmin_system, nw_link->lmm_resource.constraint,
 399                &elem))) {
 400         action = lmm_variable_id(var);
 401         action->weight += delta;
 402         if (!(action->suspended))
 403           lmm_update_variable_weight(network_maxmin_system, action->variable,
 404                                      action->weight);
 405       }
 406     }
 407     if (tmgr_trace_event_free(event_type))
 408       nw_link->lmm_resource.power.event = NULL;
 409   } else if (event_type == nw_link->lat_event) {
 410     double delta = value - nw_link->lat_current;
 411     lmm_variable_t var = NULL;
 412     lmm_element_t elem = NULL;
 413     surf_action_network_CM02_t action = NULL;
 414
 415     nw_link->lat_current = value;
 416     while ((var = lmm_get_var_from_cnst
 417             (network_maxmin_system, nw_link->lmm_resource.constraint,
 418              &elem))) {
 419       action = lmm_variable_id(var);
 420       action->lat_current += delta;
 421       action->weight += delta;
 422       if (action->rate < 0)
 423         lmm_update_variable_bound(network_maxmin_system, action->variable,
 424                                   sg_tcp_gamma / (2.0 * action->lat_current));
 425       else{
 426         lmm_update_variable_bound(network_maxmin_system, action->variable,
 427                                   min(action->rate,
 428                                       sg_tcp_gamma / (2.0 *
 429                                                       action->lat_current)));
 430
 431         if(action->rate < sg_tcp_gamma / (2.0 * action->lat_current) ){
 432                 INFO0("Flow is limited BYBANDWIDTH");
 433         }else{
 434                 INFO1("Flow is limited BYLATENCY, latency of flow is %f",action->lat_current);
 435         }
 436       }
 437       if (!(action->suspended))
 438         lmm_update_variable_weight(network_maxmin_system, action->variable,
 439                                    action->weight);
 440
 441     }
 442     if (tmgr_trace_event_free(event_type))
 443       nw_link->lat_event = NULL;
 444   } else if (event_type == nw_link->lmm_resource.state_event) {
 445     if (value > 0)
 446       nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
 447     else {
 448       lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
 449       lmm_variable_t var = NULL;
 450       lmm_element_t elem = NULL;
 451
 452       nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
 453       while ((var = lmm_get_var_from_cnst
 454               (network_maxmin_system, cnst, &elem))) {
 455         surf_action_t action = lmm_variable_id(var);
 456
 457         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 458             surf_action_state_get(action) == SURF_ACTION_READY) {
 459           action->finish = date;
 460           surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 461         }
 462       }
 463     }
 464     if (tmgr_trace_event_free(event_type))
 465       nw_link->lmm_resource.state_event = NULL;
 466   } else {
 467     CRITICAL0("Unknown event ! \n");
 468     xbt_abort();
 469   }
 470
 471   return;
 472 }
 473
 474
 475 static surf_action_t net_communicate(const char *src_name, const char *dst_name,
 476                                  int src, int dst, double size, double rate)
 477 {
 478   unsigned int i;
 479   link_CM02_t link;
 480   int failed = 0;
 481   surf_action_network_CM02_t action = NULL;
 482   double bandwidth_bound;
 483   /* LARGE PLATFORMS HACK:
 484      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 485      Use the cluster_id for ->id */
 486   xbt_dynar_t route = used_routing->get_route(src, dst);
 487   xbt_dynar_t back_route = NULL;
 488   int constraints_per_variable = 0;
 489
 490   if( sg_network_fullduplex == 1){
 491           back_route = used_routing->get_route(dst, src);
 492   }
 493
 494   /* LARGE PLATFORMS HACK:
 495      total_route_size = route_size + src->link_nb + dst->nb */
 496
 497   XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
 498   /* LARGE PLATFORMS HACK:
 499      assert on total_route_size */
 500   xbt_assert2(xbt_dynar_length(route),
 501               "You're trying to send data from %s to %s but there is no connection between these two hosts.",
 502               src_name, dst_name);
 503
 504   xbt_dynar_foreach(route, i, link) {
 505     if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
 506       failed = 1;
 507       break;
 508     }
 509   }
 510   action =
 511     surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
 512                     surf_network_model, failed);
 513   (action->generic_action).latency_limited = 0;
 514
 515   xbt_swag_insert(action, action->generic_action.state_set);
 516   action->rate = rate;
 517
 518   action->latency = 0.0;
 519   action->weight = 0.0;
 520   bandwidth_bound = -1.0;
 521   xbt_dynar_foreach(route, i, link) {
 522     action->latency += link->lat_current;
 523     action->weight +=
 524       link->lat_current +
 525       sg_weight_S_parameter /
 526       (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 527     if(bandwidth_bound < 0.0)
 528       bandwidth_bound = (*bandwidth_factor_callback)(size) * (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 529     else
 530       bandwidth_bound = min(bandwidth_bound, (*bandwidth_factor_callback)(size) * (link->lmm_resource.power.peak * link->lmm_resource.power.scale));
 531   }
 532   /* LARGE PLATFORMS HACK:
 533      Add src->link and dst->link latencies */
 534   action->lat_current = action->latency;
 535   action->latency *= (*latency_factor_callback)(size);
 536   action->rate = (*bandwidth_constraint_callback)(action->rate, bandwidth_bound, size);
 537
 538   /* LARGE PLATFORMS HACK:
 539      lmm_variable_new(..., total_route_size) */
 540   if(back_route != NULL){
 541           constraints_per_variable = xbt_dynar_length(route)+xbt_dynar_length(back_route);
 542   }else{
 543           constraints_per_variable = xbt_dynar_length(route);
 544   }
 545
 546   if (action->latency > 0)
 547     action->variable =
 548       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,constraints_per_variable);
 549   else
 550     action->variable =
 551       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,constraints_per_variable);
 552
 553   if (action->rate < 0) {
 554     if (action->lat_current > 0)
 555       lmm_update_variable_bound(network_maxmin_system, action->variable,
 556                                 sg_tcp_gamma / (2.0 * action->lat_current));
 557     else
 558       lmm_update_variable_bound(network_maxmin_system, action->variable,
 559                                 -1.0);
 560   } else {
 561     if (action->lat_current > 0)
 562       lmm_update_variable_bound(network_maxmin_system, action->variable,
 563                                 min(action->rate,
 564                                     sg_tcp_gamma / (2.0 *
 565                                                     action->lat_current)));
 566     else
 567       lmm_update_variable_bound(network_maxmin_system, action->variable,
 568                                 action->rate);
 569   }
 570
 571   xbt_dynar_foreach(route, i, link) {
 572     lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 573                action->variable, 1.0);
 574   }
 575
 576   if( sg_network_fullduplex == 1){
 577           DEBUG1("Fullduplex active adding backward flow using 5%c", '%');
 578           xbt_dynar_foreach(back_route, i, link) {
 579                   lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 580                action->variable, .05);
 581           }
 582   }  /* LARGE PLATFORMS HACK:
 583      expand also with src->link and dst->link */
 584
 585   /* saving the src and dst of this communication */
 586   action->src = src;
 587   action->dst = dst;
 588
 589   XBT_OUT;
 590
 591   return (surf_action_t) action;
 592 }
 593
 594 static double net_get_link_bandwidth(const void *link)
 595 {
 596   surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
 597   return lmm->power.peak * lmm->power.scale;
 598 }
 599
 600 static int net_link_shared(const void *link)
 601 {
 602   return lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
 603 }
 604
 605 static void net_action_suspend(surf_action_t action)
 606 {
 607   ((surf_action_network_CM02_t) action)->suspended = 1;
 608   lmm_update_variable_weight(network_maxmin_system,
 609                              ((surf_action_network_CM02_t) action)->variable,
 610                              0.0);
 611 }
 612
 613 static void net_action_resume(surf_action_t action)
 614 {
 615   if (((surf_action_network_CM02_t) action)->suspended) {
 616     lmm_update_variable_weight(network_maxmin_system,
 617                                ((surf_action_network_CM02_t)
 618                                 action)->variable,
 619                                ((surf_action_network_CM02_t) action)->weight);
 620     ((surf_action_network_CM02_t) action)->suspended = 0;
 621   }
 622 }
 623
 624 static int net_action_is_suspended(surf_action_t action)
 625 {
 626   return ((surf_action_network_CM02_t) action)->suspended;
 627 }
 628
 629 void net_action_set_max_duration(surf_action_t action, double duration)
 630 {
 631   action->max_duration = duration;
 632 }
 633
 634 static void net_finalize(void)
 635 {
 636   surf_model_exit(surf_network_model);
 637   surf_network_model = NULL;
 638
 639   used_routing->finalize();
 640   lmm_system_free(network_maxmin_system);
 641   network_maxmin_system = NULL;
 642 }
 643
 644 static void surf_network_model_init_internal(void)
 645 {
 646   surf_network_model = surf_model_init();
 647
 648   surf_network_model->name = "network";
 649   surf_network_model->action_unref = net_action_unref;
 650   surf_network_model->action_cancel = net_action_cancel;
 651   surf_network_model->action_recycle = net_action_recycle;
 652   surf_network_model->get_remains = net_action_get_remains;
 653   surf_network_model->get_latency_limited = net_get_link_latency;
 654
 655   surf_network_model->model_private->resource_used = net_resource_used;
 656   surf_network_model->model_private->share_resources = net_share_resources;
 657   surf_network_model->model_private->update_actions_state =
 658     net_update_actions_state;
 659   surf_network_model->model_private->update_resource_state =
 660     net_update_resource_state;
 661   surf_network_model->model_private->finalize = net_finalize;
 662
 663   surf_network_model->suspend = net_action_suspend;
 664   surf_network_model->resume = net_action_resume;
 665   surf_network_model->is_suspended = net_action_is_suspended;
 666   surf_cpu_model->set_max_duration = net_action_set_max_duration;
 667
 668   surf_network_model->extension.network.communicate = net_communicate;
 669   surf_network_model->extension.network.get_link_bandwidth =
 670     net_get_link_bandwidth;
 671   surf_network_model->extension.network.link_shared = net_link_shared;
 672   surf_network_model->extension.network.add_traces = net_add_traces;
 673   surf_network_model->extension.network.create_resource = net_create_resource;
 674
 675   if (!network_maxmin_system)
 676     network_maxmin_system = lmm_system_new();
 677
 678   routing_model_create(sizeof(link_CM02_t),
 679                        net_link_new(xbt_strdup("__loopback__"),
 680                                 498000000, NULL, 0.000015, NULL,
 681                                 SURF_RESOURCE_ON, NULL, SURF_LINK_FATPIPE,
 682                                 NULL));
 683 }
 684
 685
 686
 687 /************************************************************************/
 688 /* New model based on LV08 and experimental results of MPI ping-pongs   */
 689 /************************************************************************/
 690 void surf_network_model_init_SMPI(const char *filename)
 691 {
 692
 693   if (surf_network_model)
 694     return;
 695   surf_network_model_init_internal();
 696   latency_factor_callback = &smpi_latency_factor;
 697   bandwidth_factor_callback = &smpi_bandwidth_factor;
 698   bandwidth_constraint_callback = &smpi_bandwidth_constraint;
 699   net_define_callbacks(filename);
 700   xbt_dynar_push(model_list, &surf_network_model);
 701   network_solve = lmm_solve;
 702
 703   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 704
 705   update_model_description(surf_network_model_description,
 706                            "SMPI", surf_network_model);
 707 }
 708
 709 /************************************************************************/
 710 /* New model based on optimizations discussed during this thesis        */
 711 /************************************************************************/
 712 void surf_network_model_init_LegrandVelho(const char *filename)
 713 {
 714
 715   if (surf_network_model)
 716     return;
 717   surf_network_model_init_internal();
 718   net_define_callbacks(filename);
 719   xbt_dynar_push(model_list, &surf_network_model);
 720   network_solve = lmm_solve;
 721
 722   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor",10.4);
 723   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 724   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 725
 726   update_model_description(surf_network_model_description,
 727                            "LV08", surf_network_model);
 728 }
 729
 730 /***************************************************************************/
 731 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 732 /***************************************************************************/
 733 /* @TechReport{      rr-lip2002-40, */
 734 /*   author        = {Henri Casanova and Loris Marchal}, */
 735 /*   institution   = {LIP}, */
 736 /*   title         = {A Network Model for Simulation of Grid Application}, */
 737 /*   number        = {2002-40}, */
 738 /*   month         = {oct}, */
 739 /*   year          = {2002} */
 740 /* } */
 741 void surf_network_model_init_CM02(const char *filename)
 742 {
 743
 744   if (surf_network_model)
 745     return;
 746   surf_network_model_init_internal();
 747   net_define_callbacks(filename);
 748   xbt_dynar_push(model_list, &surf_network_model);
 749   network_solve = lmm_solve;
 750
 751   update_model_description(surf_network_model_description,
 752                            "CM02", surf_network_model);
 753 }
 754
 755 void surf_network_model_init_Reno(const char *filename)
 756 {
 757   if (surf_network_model)
 758     return;
 759   surf_network_model_init_internal();
 760   net_define_callbacks(filename);
 761
 762   xbt_dynar_push(model_list, &surf_network_model);
 763   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 764   network_solve = lagrange_solve;
 765
 766   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 767   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 768   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 769
 770   update_model_description(surf_network_model_description,
 771                            "Reno", surf_network_model);
 772 }
 773
 774
 775 void surf_network_model_init_Reno2(const char *filename)
 776 {
 777   if (surf_network_model)
 778     return;
 779   surf_network_model_init_internal();
 780   net_define_callbacks(filename);
 781
 782   xbt_dynar_push(model_list, &surf_network_model);
 783   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 784                                     func_reno2_fpi);
 785   network_solve = lagrange_solve;
 786
 787   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 788   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 789   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S_parameter", 8775);
 790
 791   update_model_description(surf_network_model_description,
 792                            "Reno2", surf_network_model);
 793 }
 794
 795 void surf_network_model_init_Vegas(const char *filename)
 796 {
 797   if (surf_network_model)
 798     return;
 799   surf_network_model_init_internal();
 800   net_define_callbacks(filename);
 801
 802   xbt_dynar_push(model_list, &surf_network_model);
 803   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 804                                     func_vegas_fpi);
 805   network_solve = lagrange_solve;
 806
 807   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 808   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 809   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 810
 811   update_model_description(surf_network_model_description,
 812                            "Vegas", surf_network_model);
 813 }
 814
 815