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_sender_gap = 0.0;
  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 int sg_network_fullduplex = 0;
  25
  26 xbt_dict_t gap_lookup = NULL;
  27
  28 static double net_get_link_bandwidth(const void *link);
  29
  30 static void gap_append(double size, const link_CM02_t link, surf_action_network_CM02_t action) {
  31    const char* src = link->lmm_resource.generic_resource.name;
  32    xbt_fifo_t fifo;
  33    surf_action_network_CM02_t last_action;
  34    double bw;
  35
  36    if(sg_sender_gap > 0.0) {
  37       if(!gap_lookup) {
  38          gap_lookup = xbt_dict_new();
  39       }
  40       fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, src);
  41       action->sender.gap = 0.0;
  42       if(fifo && xbt_fifo_size(fifo) > 0) {
  43          /* Compute gap from last send */
  44          last_action = (surf_action_network_CM02_t)xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
  45          bw = net_get_link_bandwidth(link);
  46          action->sender.gap = last_action->sender.gap + max(sg_sender_gap, last_action->sender.size / bw);
  47          action->latency += action->sender.gap;
  48       }
  49       /* Append action as last send */
  50       action->sender.link_name = link->lmm_resource.generic_resource.name;
  51       fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
  52       if(!fifo) {
  53          fifo = xbt_fifo_new();
  54          xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
  55       }
  56       action->sender.fifo_item = xbt_fifo_push(fifo, action);
  57       action->sender.size = size;
  58    }
  59 }
  60
  61 static void gap_unknown(surf_action_network_CM02_t action) {
  62    action->sender.gap = 0.0;
  63    action->sender.link_name = NULL;
  64    action->sender.fifo_item = NULL;
  65    action->sender.size = 0.0;
  66 }
  67
  68 static void gap_remove(surf_action_network_CM02_t action) {
  69    xbt_fifo_t fifo;
  70    size_t size;
  71
  72    if(sg_sender_gap > 0.0 && action->sender.link_name && action->sender.fifo_item) {
  73       fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
  74       xbt_fifo_remove_item(fifo, action->sender.fifo_item);
  75       size = xbt_fifo_size(fifo);
  76       if(size == 0) {
  77          xbt_fifo_free(fifo);
  78          xbt_dict_remove(gap_lookup, action->sender.link_name);
  79          size = xbt_dict_size(gap_lookup);
  80          if(size == 0) {
  81             xbt_dict_free(&gap_lookup);
  82          }
  83       }
  84    }
  85 }
  86
  87 /******************************************************************************/
  88 /*                           Factors callbacks                                */
  89 /******************************************************************************/
  90 static double constant_latency_factor(double size)
  91 {
  92   return sg_latency_factor;
  93 }
  94
  95 static double constant_bandwidth_factor(double size)
  96 {
  97   return sg_bandwidth_factor;
  98 }
  99
 100 static double constant_bandwidth_constraint(double rate, double bound,
 101                                             double size)
 102 {
 103   return rate;
 104 }
 105
 106 /**--------- <copy/paste C code snippet in surf/network.c> -------------
 107   * produced by:
 108   * ./regression2.py ./pingpong-in.dat 0.15 100 2 2.4e-5 1.25e8
 109   * outliers: 65
 110   * gnuplot:
 111     plot "./pingpong-in.dat" using 1:2 with lines title "data", \
 112         (x >= 65472) ? 0.00850436*x+558.894 : \
 113         (x >= 15424) ? 0.0114635*x+167.446 : \
 114         (x >= 9376) ? 0.0136219*x+124.464 : \
 115         (x >= 5776) ? 0.00735707*x+105.022 : \
 116         (x >= 3484) ? 0.0103235*x+90.2886 : \
 117         (x >= 1426) ? 0.0131384*x+77.3159 : \
 118         (x >= 732) ? 0.0233927*x+93.6146 : \
 119         (x >= 257) ? 0.0236608*x+93.7637 : \
 120         (x >= 0) ? 0.00985119*x+96.704 : \
 121         1.0 with lines title "piecewise function"
 122   *-------------------------------------------------------------------*/
 123
 124 static double smpi_bandwidth_factor(double size)
 125 {
 126
 127     if (size >= 65472) return 0.940694;
 128     if (size >= 15424) return 0.697866;
 129     if (size >= 9376) return 0.58729;
 130     if (size >= 5776) return 1.08739;
 131     if (size >= 3484) return 0.77493;
 132     if (size >= 1426) return 0.608902;
 133     if (size >= 732) return 0.341987;
 134     if (size >= 257) return 0.338112;
 135     if (size >= 0) return 0.812084;
 136     return 1.0;
 137 }
 138
 139 static double smpi_latency_factor(double size)
 140 {
 141
 142     if (size >= 65472) return 11.6436;
 143     if (size >= 15424) return 3.48845;
 144     if (size >= 9376) return 2.59299;
 145     if (size >= 5776) return 2.18796;
 146     if (size >= 3484) return 1.88101;
 147     if (size >= 1426) return 1.61075;
 148     if (size >= 732) return 1.9503;
 149     if (size >= 257) return 1.95341;
 150     if (size >= 0) return 2.01467;
 151     return 1.0;
 152 }
 153 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
 154
 155 static double smpi_bandwidth_constraint(double rate, double bound,
 156                                         double size)
 157 {
 158   return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
 159 }
 160
 161
 162 static double (*latency_factor_callback) (double) =
 163     &constant_latency_factor;
 164 static double (*bandwidth_factor_callback) (double) =
 165     &constant_bandwidth_factor;
 166 static double (*bandwidth_constraint_callback) (double, double, double) =
 167     &constant_bandwidth_constraint;
 168
 169
 170 static link_CM02_t net_link_new(char *name,
 171                                 double bw_initial,
 172                                 tmgr_trace_t bw_trace,
 173                                 double lat_initial,
 174                                 tmgr_trace_t lat_trace,
 175                                 e_surf_resource_state_t
 176                                 state_initial,
 177                                 tmgr_trace_t state_trace,
 178                                 e_surf_link_sharing_policy_t
 179                                 policy, xbt_dict_t properties)
 180 {
 181   link_CM02_t nw_link = (link_CM02_t)
 182       surf_resource_lmm_new(sizeof(s_link_CM02_t),
 183                             surf_network_model, name, properties,
 184                             network_maxmin_system,
 185                             sg_bandwidth_factor * bw_initial,
 186                             history,
 187                             state_initial, state_trace,
 188                             bw_initial, bw_trace);
 189
 190   xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
 191               "Link '%s' declared several times in the platform file.",
 192               name);
 193
 194   nw_link->lat_current = lat_initial;
 195   if (lat_trace)
 196     nw_link->lat_event =
 197         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
 198
 199   if (policy == SURF_LINK_FATPIPE)
 200     lmm_constraint_shared(nw_link->lmm_resource.constraint);
 201
 202   xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
 203
 204   return nw_link;
 205 }
 206
 207 static void net_parse_link_init(void)
 208 {
 209   char *name_link;
 210   double bw_initial;
 211   tmgr_trace_t bw_trace;
 212   double lat_initial;
 213   tmgr_trace_t lat_trace;
 214   e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
 215   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 216   tmgr_trace_t state_trace;
 217   XBT_DEBUG("link_CM02");
 218   name_link = xbt_strdup(A_surfxml_link_id);
 219   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 220   bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
 221   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 222   lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
 223
 224   xbt_assert((A_surfxml_link_state == A_surfxml_link_state_ON)
 225               || (A_surfxml_link_state ==
 226                   A_surfxml_link_state_OFF), "Invalid state");
 227   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 228     state_initial_link = SURF_RESOURCE_ON;
 229   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
 230     state_initial_link = SURF_RESOURCE_OFF;
 231
 232   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
 233     policy_initial_link = SURF_LINK_SHARED;
 234   else
 235           {
 236           if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FATPIPE)
 237                   policy_initial_link = SURF_LINK_FATPIPE;
 238           else if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FULLDUPLEX)
 239                   policy_initial_link = SURF_LINK_FULLDUPLEX;
 240           }
 241
 242   state_trace = tmgr_trace_new(A_surfxml_link_state_file);
 243
 244   if(policy_initial_link == SURF_LINK_FULLDUPLEX)
 245   {
 246           net_link_new(bprintf("%s_UP",name_link), bw_initial, bw_trace,
 247                        lat_initial, lat_trace, state_initial_link, state_trace,
 248                        policy_initial_link, xbt_dict_new());
 249           net_link_new(bprintf("%s_DOWN",name_link), bw_initial, bw_trace,
 250                        lat_initial, lat_trace, state_initial_link, state_trace,
 251                        policy_initial_link, xbt_dict_new());
 252   }
 253   else
 254   {
 255           net_link_new(name_link, bw_initial, bw_trace,
 256                        lat_initial, lat_trace, state_initial_link, state_trace,
 257                        policy_initial_link, xbt_dict_new());
 258   }
 259
 260 }
 261
 262 static void net_create_resource(char *name,
 263                                 double bw_initial,
 264                                 tmgr_trace_t bw_trace,
 265                                 double lat_initial,
 266                                 tmgr_trace_t lat_trace,
 267                                 e_surf_resource_state_t
 268                                 state_initial,
 269                                 tmgr_trace_t state_trace,
 270                                 e_surf_link_sharing_policy_t policy,
 271                                 xbt_dict_t properties)
 272 {
 273   net_link_new(name, bw_initial, bw_trace,
 274                lat_initial, lat_trace, state_initial, state_trace,
 275                policy, xbt_dict_new());
 276 }
 277
 278 static void net_add_traces(void)
 279 {
 280   xbt_dict_cursor_t cursor = NULL;
 281   char *trace_name, *elm;
 282
 283   static int called = 0;
 284   if (called)
 285     return;
 286   called = 1;
 287
 288   /* connect all traces relative to network */
 289   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 290     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 291     link_CM02_t link =
 292         xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
 293
 294     xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
 295                 trace_name, elm);
 296     xbt_assert(trace,
 297                 "Cannot connect trace %s to link %s: trace undefined",
 298                 trace_name, elm);
 299
 300     link->lmm_resource.state_event =
 301         tmgr_history_add_trace(history, trace, 0.0, 0, link);
 302   }
 303
 304   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 305     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 306     link_CM02_t link =
 307                 xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
 308
 309     xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
 310                 trace_name, elm);
 311     xbt_assert(trace,
 312                 "Cannot connect trace %s to link %s: trace undefined",
 313                 trace_name, elm);
 314
 315     link->lmm_resource.power.event =
 316         tmgr_history_add_trace(history, trace, 0.0, 0, link);
 317   }
 318
 319   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 320     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 321     link_CM02_t link =
 322                 xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
 323
 324     xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
 325                 trace_name, elm);
 326     xbt_assert(trace,
 327                 "Cannot connect trace %s to link %s: trace undefined",
 328                 trace_name, elm);
 329
 330     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 331   }
 332 }
 333
 334 static void net_define_callbacks(const char *file)
 335 {
 336   /* Figuring out the network links */
 337   surfxml_add_callback(STag_surfxml_link_cb_list, &net_parse_link_init);
 338   surfxml_add_callback(ETag_surfxml_platform_cb_list, &net_add_traces);
 339 }
 340
 341 static int net_resource_used(void *resource_id)
 342 {
 343   return lmm_constraint_used(network_maxmin_system,
 344                              ((surf_resource_lmm_t)
 345                               resource_id)->constraint);
 346 }
 347
 348 static int net_action_unref(surf_action_t action)
 349 {
 350   action->refcount--;
 351   if (!action->refcount) {
 352     xbt_swag_remove(action, action->state_set);
 353     if (((surf_action_network_CM02_t) action)->variable)
 354       lmm_variable_free(network_maxmin_system,
 355                         ((surf_action_network_CM02_t) action)->variable);
 356 #ifdef HAVE_TRACING
 357     xbt_free(((surf_action_network_CM02_t) action)->src_name);
 358     xbt_free(((surf_action_network_CM02_t) action)->dst_name);
 359     if (action->category)
 360       xbt_free(action->category);
 361 #endif
 362     surf_action_free(&action);
 363     return 1;
 364   }
 365   return 0;
 366 }
 367
 368 static void net_action_cancel(surf_action_t action)
 369 {
 370   surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 371 }
 372
 373 void net_action_recycle(surf_action_t action)
 374 {
 375   return;
 376 }
 377
 378 #ifdef HAVE_LATENCY_BOUND_TRACKING
 379 int net_get_link_latency_limited(surf_action_t action)
 380 {
 381   return action->latency_limited;
 382 }
 383 #endif
 384
 385 double net_action_get_remains(surf_action_t action)
 386 {
 387   return action->remains;
 388 }
 389
 390 static double net_share_resources(double now)
 391 {
 392   s_surf_action_network_CM02_t s_action;
 393   surf_action_network_CM02_t action = NULL;
 394   xbt_swag_t running_actions =
 395       surf_network_model->states.running_action_set;
 396   double min;
 397
 398   min = generic_maxmin_share_resources(running_actions,
 399                                        xbt_swag_offset(s_action,
 400                                                        variable),
 401                                        network_maxmin_system,
 402                                        network_solve);
 403
 404 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 405
 406   xbt_swag_foreach(action, running_actions) {
 407 #ifdef HAVE_LATENCY_BOUND_TRACKING
 408     if (lmm_is_variable_limited_by_latency(action->variable)) {
 409       (action->generic_action).latency_limited = 1;
 410     } else {
 411       (action->generic_action).latency_limited = 0;
 412     }
 413 #endif
 414     if (action->latency > 0) {
 415       if (min < 0)
 416         min = action->latency;
 417       else if (action->latency < min)
 418         min = action->latency;
 419     }
 420   }
 421
 422   XBT_DEBUG("Min of share resources %f", min);
 423
 424   return min;
 425 }
 426
 427 static void net_update_actions_state(double now, double delta)
 428 {
 429   double deltap = 0.0;
 430   surf_action_network_CM02_t action = NULL;
 431   surf_action_network_CM02_t next_action = NULL;
 432   xbt_swag_t running_actions =
 433       surf_network_model->states.running_action_set;
 434   /*
 435      xbt_swag_t failed_actions =
 436      surf_network_model->states.failed_action_set;
 437    */
 438
 439   xbt_swag_foreach_safe(action, next_action, running_actions) {
 440     deltap = delta;
 441     if (action->latency > 0) {
 442       if (action->latency > deltap) {
 443         double_update(&(action->latency), deltap);
 444         deltap = 0.0;
 445       } else {
 446         double_update(&(deltap), action->latency);
 447         action->latency = 0.0;
 448       }
 449       if ((action->latency == 0.0) && !(action->suspended))
 450         lmm_update_variable_weight(network_maxmin_system, action->variable,
 451                                    action->weight);
 452     }
 453 #ifdef HAVE_TRACING
 454     if (TRACE_is_enabled()) {
 455       xbt_dynar_t route = global_routing->get_route(action->src_name,
 456                                                     action->dst_name);
 457       link_CM02_t link;
 458       unsigned int i;
 459       xbt_dynar_foreach(route, i, link) {
 460         TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
 461                                         action->generic_action.data,
 462                                         (surf_action_t) action,
 463                                         lmm_variable_getvalue
 464                                         (action->variable), now - delta,
 465                                         delta);
 466       }
 467     }
 468 #endif
 469     if(!lmm_get_number_of_cnst_from_var(network_maxmin_system, action->variable)) {
 470                                 /* There is actually no link used, hence an infinite bandwidth.
 471                                  * This happens often when using models like vivaldi.
 472                                  * In such case, just make sure that the action completes immediately.
 473                                  */
 474         double_update(&(action->generic_action.remains),
 475                         action->generic_action.remains);
 476     }
 477     double_update(&(action->generic_action.remains),
 478                   lmm_variable_getvalue(action->variable) * deltap);
 479     if (action->generic_action.max_duration != NO_MAX_DURATION)
 480       double_update(&(action->generic_action.max_duration), delta);
 481
 482     if ((action->generic_action.remains <= 0) &&
 483         (lmm_get_variable_weight(action->variable) > 0)) {
 484       action->generic_action.finish = surf_get_clock();
 485       surf_network_model->action_state_set((surf_action_t) action,
 486                                            SURF_ACTION_DONE);
 487       gap_remove(action);
 488     } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
 489                && (action->generic_action.max_duration <= 0)) {
 490       action->generic_action.finish = surf_get_clock();
 491       surf_network_model->action_state_set((surf_action_t) action,
 492                                            SURF_ACTION_DONE);
 493       gap_remove(action);
 494     }
 495   }
 496
 497   return;
 498 }
 499
 500 static void net_update_resource_state(void *id,
 501                                       tmgr_trace_event_t event_type,
 502                                       double value, double date)
 503 {
 504   link_CM02_t nw_link = id;
 505   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 506   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 507   /*     value, event_type); */
 508
 509   if (event_type == nw_link->lmm_resource.power.event) {
 510     double delta =
 511         sg_weight_S_parameter / value - sg_weight_S_parameter /
 512         (nw_link->lmm_resource.power.peak *
 513          nw_link->lmm_resource.power.scale);
 514     lmm_variable_t var = NULL;
 515     lmm_element_t elem = NULL;
 516     surf_action_network_CM02_t action = NULL;
 517
 518     nw_link->lmm_resource.power.peak = value;
 519     lmm_update_constraint_bound(network_maxmin_system,
 520                                 nw_link->lmm_resource.constraint,
 521                                 sg_bandwidth_factor *
 522                                 (nw_link->lmm_resource.power.peak *
 523                                  nw_link->lmm_resource.power.scale));
 524 #ifdef HAVE_TRACING
 525     TRACE_surf_link_set_bandwidth(date, nw_link->lmm_resource.generic_resource.name,
 526                                   sg_bandwidth_factor *
 527                                   (nw_link->lmm_resource.power.peak *
 528                                    nw_link->lmm_resource.power.scale));
 529 #endif
 530     if (sg_weight_S_parameter > 0) {
 531       while ((var = lmm_get_var_from_cnst
 532               (network_maxmin_system, nw_link->lmm_resource.constraint,
 533                &elem))) {
 534         action = lmm_variable_id(var);
 535         action->weight += delta;
 536         if (!(action->suspended))
 537           lmm_update_variable_weight(network_maxmin_system,
 538                                      action->variable, action->weight);
 539       }
 540     }
 541     if (tmgr_trace_event_free(event_type))
 542       nw_link->lmm_resource.power.event = NULL;
 543   } else if (event_type == nw_link->lat_event) {
 544     double delta = value - nw_link->lat_current;
 545     lmm_variable_t var = NULL;
 546     lmm_element_t elem = NULL;
 547     surf_action_network_CM02_t action = NULL;
 548
 549     nw_link->lat_current = value;
 550     while ((var = lmm_get_var_from_cnst
 551             (network_maxmin_system, nw_link->lmm_resource.constraint,
 552              &elem))) {
 553       action = lmm_variable_id(var);
 554       action->lat_current += delta;
 555       action->weight += delta;
 556       if (action->rate < 0)
 557         lmm_update_variable_bound(network_maxmin_system, action->variable,
 558                                   sg_tcp_gamma / (2.0 *
 559                                                   action->lat_current));
 560       else {
 561         lmm_update_variable_bound(network_maxmin_system, action->variable,
 562                                   min(action->rate,
 563                                       sg_tcp_gamma / (2.0 *
 564                                                       action->lat_current)));
 565
 566         if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
 567           XBT_INFO("Flow is limited BYBANDWIDTH");
 568         } else {
 569           XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
 570                 action->lat_current);
 571         }
 572       }
 573       if (!(action->suspended))
 574         lmm_update_variable_weight(network_maxmin_system, action->variable,
 575                                    action->weight);
 576
 577     }
 578     if (tmgr_trace_event_free(event_type))
 579       nw_link->lat_event = NULL;
 580   } else if (event_type == nw_link->lmm_resource.state_event) {
 581     if (value > 0)
 582       nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
 583     else {
 584       lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
 585       lmm_variable_t var = NULL;
 586       lmm_element_t elem = NULL;
 587
 588       nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
 589       while ((var = lmm_get_var_from_cnst
 590               (network_maxmin_system, cnst, &elem))) {
 591         surf_action_t action = lmm_variable_id(var);
 592
 593         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 594             surf_action_state_get(action) == SURF_ACTION_READY) {
 595           action->finish = date;
 596           surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 597         }
 598       }
 599     }
 600     if (tmgr_trace_event_free(event_type))
 601       nw_link->lmm_resource.state_event = NULL;
 602   } else {
 603     XBT_CRITICAL("Unknown event ! \n");
 604     xbt_abort();
 605   }
 606
 607   return;
 608 }
 609
 610
 611 static surf_action_t net_communicate(const char *src_name,
 612                                      const char *dst_name, double size,
 613                                      double rate)
 614 {
 615   unsigned int i;
 616   link_CM02_t link;
 617   int failed = 0;
 618   surf_action_network_CM02_t action = NULL;
 619   double bandwidth_bound;
 620   double latency=0.0;
 621   /* LARGE PLATFORMS HACK:
 622      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 623      Use the cluster_id for ->id */
 624
 625   xbt_dynar_t back_route = NULL;
 626   int constraints_per_variable = 0;
 627   xbt_dynar_t route;
 628   // I will need this route for some time so require for no cleanup
 629   global_routing->get_route_latency(src_name, dst_name, &route, &latency, 0);
 630
 631   if (sg_network_fullduplex == 1) {
 632     back_route = global_routing->get_route(dst_name, src_name);
 633   }
 634
 635   /* LARGE PLATFORMS HACK:
 636      total_route_size = route_size + src->link_nb + dst->nb */
 637
 638   XBT_IN("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
 639   /* LARGE PLATFORMS HACK:
 640      assert on total_route_size */
 641   xbt_assert(xbt_dynar_length(route) || latency,
 642               "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
 643               src_name, dst_name);
 644
 645   xbt_dynar_foreach(route, i, link) {
 646     if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
 647       failed = 1;
 648       break;
 649     }
 650   }
 651   action =
 652       surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
 653                       surf_network_model, failed);
 654 #ifdef HAVE_LATENCY_BOUND_TRACKING
 655   (action->generic_action).latency_limited = 0;
 656 #endif
 657   action->weight = action->latency = latency;
 658
 659   xbt_swag_insert(action, action->generic_action.state_set);
 660   action->rate = rate;
 661
 662   bandwidth_bound = -1.0;
 663
 664   xbt_dynar_foreach(route, i, link) {
 665     action->weight +=
 666         sg_weight_S_parameter /
 667         (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 668     if (bandwidth_bound < 0.0)
 669       bandwidth_bound =
 670           (*bandwidth_factor_callback) (size) *
 671           (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 672     else
 673       bandwidth_bound =
 674           min(bandwidth_bound,
 675               (*bandwidth_factor_callback) (size) *
 676               (link->lmm_resource.power.peak *
 677                link->lmm_resource.power.scale));
 678   }
 679   /* LARGE PLATFORMS HACK:
 680      Add src->link and dst->link latencies */
 681   action->lat_current = action->latency;
 682   action->latency *= (*latency_factor_callback) (size);
 683   action->rate =
 684       (*bandwidth_constraint_callback) (action->rate, bandwidth_bound,
 685                                         size);
 686
 687   if(xbt_dynar_length(route) > 0) {
 688     link = *(link_CM02_t*)xbt_dynar_get_ptr(route, 0);
 689     gap_append(size, link, action);
 690     XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
 691            action, src_name, dst_name, action->sender.gap, action->latency);
 692   } else {
 693     gap_unknown(action);
 694   }
 695
 696
 697   /* LARGE PLATFORMS HACK:
 698      lmm_variable_new(..., total_route_size) */
 699   if (back_route != NULL) {
 700     constraints_per_variable =
 701         xbt_dynar_length(route) + xbt_dynar_length(back_route);
 702   } else {
 703     constraints_per_variable = xbt_dynar_length(route);
 704   }
 705
 706   if (action->latency > 0)
 707     action->variable =
 708         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 709                          constraints_per_variable);
 710   else
 711     action->variable =
 712         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 713                          constraints_per_variable);
 714
 715   if (action->rate < 0) {
 716     if (action->lat_current > 0)
 717       lmm_update_variable_bound(network_maxmin_system, action->variable,
 718                                 sg_tcp_gamma / (2.0 *
 719                                                 action->lat_current));
 720     else
 721       lmm_update_variable_bound(network_maxmin_system, action->variable,
 722                                 -1.0);
 723   } else {
 724     if (action->lat_current > 0)
 725       lmm_update_variable_bound(network_maxmin_system, action->variable,
 726                                 min(action->rate,
 727                                     sg_tcp_gamma / (2.0 *
 728                                                     action->lat_current)));
 729     else
 730       lmm_update_variable_bound(network_maxmin_system, action->variable,
 731                                 action->rate);
 732   }
 733
 734   xbt_dynar_foreach(route, i, link) {
 735     lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 736                action->variable, 1.0);
 737   }
 738
 739   if (sg_network_fullduplex == 1) {
 740     XBT_DEBUG("Fullduplex active adding backward flow using 5%c", '%');
 741     xbt_dynar_foreach(back_route, i, link) {
 742       lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 743                  action->variable, .05);
 744     }
 745   }
 746   /* LARGE PLATFORMS HACK:
 747      expand also with src->link and dst->link */
 748 #ifdef HAVE_TRACING
 749   if (TRACE_is_enabled()) {
 750     action->src_name = xbt_strdup(src_name);
 751     action->dst_name = xbt_strdup(dst_name);
 752   } else {
 753     action->src_name = action->dst_name = NULL;
 754   }
 755 #endif
 756
 757   xbt_dynar_free(&route);
 758   XBT_OUT();
 759
 760   return (surf_action_t) action;
 761 }
 762
 763 static xbt_dynar_t net_get_route(const char *src, const char *dst)
 764 {
 765   return global_routing->get_route(src, dst);
 766 }
 767
 768 static double net_get_link_bandwidth(const void *link)
 769 {
 770   surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
 771   return lmm->power.peak * lmm->power.scale;
 772 }
 773
 774 static double net_get_link_latency(const void *link)
 775 {
 776   return ((link_CM02_t) link)->lat_current;
 777 }
 778
 779 static int net_link_shared(const void *link)
 780 {
 781   return
 782       lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
 783 }
 784
 785 static void net_action_suspend(surf_action_t action)
 786 {
 787   ((surf_action_network_CM02_t) action)->suspended = 1;
 788   lmm_update_variable_weight(network_maxmin_system,
 789                              ((surf_action_network_CM02_t)
 790                               action)->variable, 0.0);
 791 }
 792
 793 static void net_action_resume(surf_action_t action)
 794 {
 795   if (((surf_action_network_CM02_t) action)->suspended) {
 796     lmm_update_variable_weight(network_maxmin_system,
 797                                ((surf_action_network_CM02_t)
 798                                 action)->variable,
 799                                ((surf_action_network_CM02_t)
 800                                 action)->weight);
 801     ((surf_action_network_CM02_t) action)->suspended = 0;
 802   }
 803 }
 804
 805 static int net_action_is_suspended(surf_action_t action)
 806 {
 807   return ((surf_action_network_CM02_t) action)->suspended;
 808 }
 809
 810 void net_action_set_max_duration(surf_action_t action, double duration)
 811 {
 812   action->max_duration = duration;
 813 }
 814
 815 #ifdef HAVE_TRACING
 816 static void net_action_set_category(surf_action_t action, const char *category)
 817 {
 818   action->category = xbt_strdup (category);
 819 }
 820 #endif
 821
 822 static void net_finalize(void)
 823 {
 824   surf_model_exit(surf_network_model);
 825   surf_network_model = NULL;
 826
 827   global_routing->finalize();
 828
 829   lmm_system_free(network_maxmin_system);
 830   network_maxmin_system = NULL;
 831 }
 832
 833 static void surf_network_model_init_internal(void)
 834 {
 835   surf_network_model = surf_model_init();
 836
 837   surf_network_model->name = "network";
 838   surf_network_model->action_unref = net_action_unref;
 839   surf_network_model->action_cancel = net_action_cancel;
 840   surf_network_model->action_recycle = net_action_recycle;
 841   surf_network_model->get_remains = net_action_get_remains;
 842 #ifdef HAVE_LATENCY_BOUND_TRACKING
 843   surf_network_model->get_latency_limited = net_get_link_latency_limited;
 844 #endif
 845
 846   surf_network_model->model_private->resource_used = net_resource_used;
 847   surf_network_model->model_private->share_resources = net_share_resources;
 848   surf_network_model->model_private->update_actions_state =
 849       net_update_actions_state;
 850   surf_network_model->model_private->update_resource_state =
 851       net_update_resource_state;
 852   surf_network_model->model_private->finalize = net_finalize;
 853
 854   surf_network_model->suspend = net_action_suspend;
 855   surf_network_model->resume = net_action_resume;
 856   surf_network_model->is_suspended = net_action_is_suspended;
 857   surf_network_model->set_max_duration = net_action_set_max_duration;
 858 #ifdef HAVE_TRACING
 859   surf_network_model->set_category = net_action_set_category;
 860 #endif
 861
 862   surf_network_model->extension.network.communicate = net_communicate;
 863   surf_network_model->extension.network.get_route = net_get_route;
 864   surf_network_model->extension.network.get_link_bandwidth =
 865       net_get_link_bandwidth;
 866   surf_network_model->extension.network.get_link_latency =
 867       net_get_link_latency;
 868   surf_network_model->extension.network.link_shared = net_link_shared;
 869   surf_network_model->extension.network.add_traces = net_add_traces;
 870   surf_network_model->extension.network.create_resource =
 871       net_create_resource;
 872
 873   if (!network_maxmin_system)
 874     network_maxmin_system = lmm_system_new();
 875
 876   routing_model_create(sizeof(link_CM02_t),
 877                        net_link_new(xbt_strdup("__loopback__"),
 878                                     498000000, NULL, 0.000015, NULL,
 879                                     SURF_RESOURCE_ON, NULL,
 880                                     SURF_LINK_FATPIPE, NULL),
 881                        net_get_link_latency);
 882 }
 883
 884
 885
 886 /************************************************************************/
 887 /* New model based on LV08 and experimental results of MPI ping-pongs   */
 888 /************************************************************************/
 889 void surf_network_model_init_SMPI(const char *filename)
 890 {
 891
 892   if (surf_network_model)
 893     return;
 894   surf_network_model_init_internal();
 895   latency_factor_callback = &smpi_latency_factor;
 896   bandwidth_factor_callback = &smpi_bandwidth_factor;
 897   bandwidth_constraint_callback = &smpi_bandwidth_constraint;
 898   net_define_callbacks(filename);
 899   xbt_dynar_push(model_list, &surf_network_model);
 900   network_solve = lmm_solve;
 901
 902   xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
 903   xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
 904
 905   update_model_description(surf_network_model_description,
 906                            "SMPI", surf_network_model);
 907 }
 908
 909 /************************************************************************/
 910 /* New model based on optimizations discussed during this thesis        */
 911 /************************************************************************/
 912 void surf_network_model_init_LegrandVelho(const char *filename)
 913 {
 914
 915   if (surf_network_model)
 916     return;
 917   surf_network_model_init_internal();
 918   net_define_callbacks(filename);
 919   xbt_dynar_push(model_list, &surf_network_model);
 920   network_solve = lmm_solve;
 921
 922   xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
 923   xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
 924                             0.92);
 925   xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
 926
 927   update_model_description(surf_network_model_description,
 928                            "LV08", surf_network_model);
 929 }
 930
 931 /***************************************************************************/
 932 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 933 /***************************************************************************/
 934 /* @TechReport{      rr-lip2002-40, */
 935 /*   author        = {Henri Casanova and Loris Marchal}, */
 936 /*   institution   = {LIP}, */
 937 /*   title         = {A Network Model for Simulation of Grid Application}, */
 938 /*   number        = {2002-40}, */
 939 /*   month         = {oct}, */
 940 /*   year          = {2002} */
 941 /* } */
 942 void surf_network_model_init_CM02(const char *filename)
 943 {
 944
 945   if (surf_network_model)
 946     return;
 947   surf_network_model_init_internal();
 948   net_define_callbacks(filename);
 949   xbt_dynar_push(model_list, &surf_network_model);
 950   network_solve = lmm_solve;
 951
 952   update_model_description(surf_network_model_description,
 953                            "CM02", surf_network_model);
 954 }
 955
 956 void surf_network_model_init_Reno(const char *filename)
 957 {
 958   if (surf_network_model)
 959     return;
 960   surf_network_model_init_internal();
 961   net_define_callbacks(filename);
 962
 963   xbt_dynar_push(model_list, &surf_network_model);
 964   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 965                                     func_reno_fpi);
 966   network_solve = lagrange_solve;
 967
 968   xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
 969   xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
 970                             0.92);
 971   xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
 972
 973   update_model_description(surf_network_model_description,
 974                            "Reno", surf_network_model);
 975 }
 976
 977
 978 void surf_network_model_init_Reno2(const char *filename)
 979 {
 980   if (surf_network_model)
 981     return;
 982   surf_network_model_init_internal();
 983   net_define_callbacks(filename);
 984
 985   xbt_dynar_push(model_list, &surf_network_model);
 986   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 987                                     func_reno2_fpi);
 988   network_solve = lagrange_solve;
 989
 990   xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
 991   xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
 992                             0.92);
 993   xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
 994                             8775);
 995
 996   update_model_description(surf_network_model_description,
 997                            "Reno2", surf_network_model);
 998 }
 999
1000 void surf_network_model_init_Vegas(const char *filename)
1001 {
1002   if (surf_network_model)
1003     return;
1004   surf_network_model_init_internal();
1005   net_define_callbacks(filename);
1006
1007   xbt_dynar_push(model_list, &surf_network_model);
1008   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1009                                     func_vegas_fpi);
1010   network_solve = lagrange_solve;
1011
1012   xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1013   xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1014                             0.92);
1015   xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1016
1017   update_model_description(surf_network_model_description,
1018                            "Vegas", surf_network_model);
1019 }