src/surf/host_ptask_L07.cpp

   1 /* Copyright (c) 2007-2010, 2013-2015. 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 "host_ptask_L07.hpp"
   8
   9 #include "cpu_interface.hpp"
  10 #include "surf_routing.hpp"
  11 #include "xbt/lib.h"
  12
  13 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_host);
  14
  15 static int ptask_host_count = 0;
  16 static xbt_dict_t ptask_parallel_task_link_set = NULL;
  17 lmm_system_t ptask_maxmin_system = NULL;
  18
  19
  20 /**************************************/
  21 /*** Resource Creation & Destruction **/
  22 /**************************************/
  23
  24 static void ptask_netlink_parse_init(sg_platf_link_cbarg_t link)
  25 {
  26   netlink_parse_init(link);
  27   current_property_set = NULL;
  28 }
  29
  30 void surf_host_model_init_ptask_L07(void)
  31 {
  32   XBT_INFO("Switching to the L07 model to handle parallel tasks.");
  33   xbt_assert(!surf_cpu_model_pm, "CPU model type already defined");
  34   xbt_assert(!surf_network_model, "network model type already defined");
  35
  36   // Define the callbacks to parse the XML
  37   sg_platf_host_add_cb(cpu_parse_init);
  38   sg_platf_host_add_cb(host_parse_init);
  39   sg_platf_link_add_cb(ptask_netlink_parse_init);
  40   sg_platf_postparse_add_cb(host_add_traces);
  41
  42   surf_host_model = new HostL07Model();
  43   Model *model = surf_host_model;
  44   xbt_dynar_push(model_list, &model);
  45   xbt_dynar_push(model_list_invoke, &model);
  46 }
  47
  48
  49 HostL07Model::HostL07Model() : HostModel() {
  50   if (!ptask_maxmin_system)
  51         ptask_maxmin_system = lmm_system_new(1);
  52   surf_host_model = NULL;
  53   surf_network_model = new NetworkL07Model();
  54   surf_cpu_model_pm = new CpuL07Model();
  55
  56   routing_model_create(surf_network_model->createLink("__loopback__",
  57                                                           498000000, NULL,
  58                                                           0.000015, NULL,
  59                                                           SURF_RESOURCE_ON, NULL,
  60                                                           SURF_LINK_FATPIPE, NULL));
  61 }
  62
  63 HostL07Model::~HostL07Model() {
  64   xbt_dict_free(&ptask_parallel_task_link_set);
  65
  66   delete surf_cpu_model_pm;
  67   delete surf_network_model;
  68   ptask_host_count = 0;
  69
  70   if (ptask_maxmin_system) {
  71     lmm_system_free(ptask_maxmin_system);
  72     ptask_maxmin_system = NULL;
  73   }
  74 }
  75
  76 double HostL07Model::shareResources(double /*now*/)
  77 {
  78   L07Action *action;
  79
  80   ActionList *running_actions = getRunningActionSet();
  81   double min = this->shareResourcesMaxMin(running_actions,
  82                                               ptask_maxmin_system,
  83                                               bottleneck_solve);
  84
  85   for(ActionList::iterator it(running_actions->begin()), itend(running_actions->end())
  86          ; it != itend ; ++it) {
  87         action = static_cast<L07Action*>(&*it);
  88     if (action->m_latency > 0) {
  89       if (min < 0) {
  90         min = action->m_latency;
  91         XBT_DEBUG("Updating min (value) with %p (start %f): %f", action,
  92                action->getStartTime(), min);
  93       } else if (action->m_latency < min) {
  94         min = action->m_latency;
  95         XBT_DEBUG("Updating min (latency) with %p (start %f): %f", action,
  96                action->getStartTime(), min);
  97       }
  98     }
  99   }
 100
 101   XBT_DEBUG("min value : %f", min);
 102
 103   return min;
 104 }
 105
 106 void HostL07Model::updateActionsState(double /*now*/, double delta) {
 107
 108   L07Action *action;
 109   ActionList *actionSet = getRunningActionSet();
 110
 111   for(ActionList::iterator it = actionSet->begin(), itNext = it
 112          ; it != actionSet->end()
 113          ; it =  itNext) {
 114         ++itNext;
 115     action = static_cast<L07Action*>(&*it);
 116     if (action->m_latency > 0) {
 117       if (action->m_latency > delta) {
 118         double_update(&(action->m_latency), delta, sg_surf_precision);
 119       } else {
 120         action->m_latency = 0.0;
 121       }
 122       if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
 123         action->updateBound();
 124         lmm_update_variable_weight(ptask_maxmin_system, action->getVariable(), 1.0);
 125       }
 126     }
 127     XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
 128            action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
 129     action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
 130
 131     if (action->getMaxDuration() != NO_MAX_DURATION)
 132       action->updateMaxDuration(delta);
 133
 134     XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
 135
 136     /* In the next if cascade, the action can be finished either because:
 137      *  - The amount of remaining work reached 0
 138      *  - The max duration was reached
 139      * If it's not done, it may have failed.
 140      */
 141
 142     if ((action->getRemains() <= 0) &&
 143         (lmm_get_variable_weight(action->getVariable()) > 0)) {
 144       action->finish();
 145       action->setState(SURF_ACTION_DONE);
 146     } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
 147                (action->getMaxDuration() <= 0)) {
 148       action->finish();
 149       action->setState(SURF_ACTION_DONE);
 150     } else {
 151       /* Need to check that none of the model has failed */
 152       lmm_constraint_t cnst = NULL;
 153       int i = 0;
 154
 155       while ((cnst = lmm_get_cnst_from_var(ptask_maxmin_system, action->getVariable(), i++))) {
 156         void *constraint_id = lmm_constraint_id(cnst);
 157
 158         if (static_cast<Host*>(constraint_id)->getState() == SURF_RESOURCE_OFF) {
 159           XBT_DEBUG("Action (%p) Failed!!", action);
 160           action->finish();
 161           action->setState(SURF_ACTION_FAILED);
 162           break;
 163         }
 164       }
 165     }
 166   }
 167   return;
 168 }
 169
 170 Action *HostL07Model::executeParallelTask(int host_nb,
 171                                           sg_host_t*host_list,
 172                                                                                   double *flops_amount,
 173                                                                                   double *bytes_amount,
 174                                                                                   double rate)
 175 {
 176   L07Action *action = new L07Action(this, 1, 0);
 177   unsigned int cpt;
 178   int nb_link = 0;
 179   int nb_host = 0;
 180   double latency = 0.0;
 181
 182   action->p_edgeList->reserve(host_nb);
 183   for (int i = 0; i<host_nb; i++)
 184           action->p_edgeList->push_back(sg_host_edge(host_list[i]));
 185
 186   if (ptask_parallel_task_link_set == NULL)
 187     ptask_parallel_task_link_set = xbt_dict_new_homogeneous(NULL);
 188
 189   xbt_dict_reset(ptask_parallel_task_link_set);
 190
 191   /* Compute the number of affected resources... */
 192   for (int i = 0; i < host_nb; i++) {
 193     for (int j = 0; j < host_nb; j++) {
 194       xbt_dynar_t route=NULL;
 195
 196       if (bytes_amount[i * host_nb + j] > 0) {
 197         double lat=0.0;
 198         unsigned int cpt;
 199         void *_link;
 200         LinkL07 *link;
 201
 202         routing_platf->getRouteAndLatency((*action->p_edgeList)[i], (*action->p_edgeList)[j],
 203                                                   &route, &lat);
 204         latency = MAX(latency, lat);
 205
 206         xbt_dynar_foreach(route, cpt, _link) {
 207            link = static_cast<LinkL07*>(_link);
 208            xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, NULL);
 209         }
 210       }
 211     }
 212   }
 213
 214   nb_link = xbt_dict_length(ptask_parallel_task_link_set);
 215   xbt_dict_reset(ptask_parallel_task_link_set);
 216
 217   for (int i = 0; i < host_nb; i++)
 218     if (flops_amount[i] > 0)
 219       nb_host++;
 220
 221   XBT_DEBUG("Creating a parallel task (%p) with %d cpus and %d links.",
 222          action, host_nb, nb_link);
 223   action->m_suspended = 0; /* valgrind seems to want it despite the calloc... */
 224   action->p_computationAmount = flops_amount;
 225   action->p_communicationAmount = bytes_amount;
 226   action->m_latency = latency;
 227   action->m_rate = rate;
 228
 229   action->p_variable = lmm_variable_new(ptask_maxmin_system, action, 1.0,
 230                                         (rate > 0 ? rate : -1.0),
 231                                                                                 host_nb + nb_link);
 232
 233   if (action->m_latency > 0)
 234     lmm_update_variable_weight(ptask_maxmin_system, action->getVariable(), 0.0);
 235
 236   for (int i = 0; i < host_nb; i++)
 237     lmm_expand(ptask_maxmin_system,
 238                sg_host_surfcpu(host_list[i])->getConstraint(),
 239                action->getVariable(), flops_amount[i]);
 240
 241   for (int i = 0; i < host_nb; i++) {
 242     for (int j = 0; j < host_nb; j++) {
 243       void *_link;
 244
 245       xbt_dynar_t route=NULL;
 246       if (bytes_amount[i * host_nb + j] == 0.0)
 247         continue;
 248
 249       routing_platf->getRouteAndLatency((*action->p_edgeList)[i], (*action->p_edgeList)[j],
 250                                             &route, NULL);
 251
 252       xbt_dynar_foreach(route, cpt, _link) {
 253         LinkL07 *link = static_cast<LinkL07*>(_link);
 254         lmm_expand_add(ptask_maxmin_system, link->getConstraint(),
 255                        action->getVariable(),
 256                        bytes_amount[i * host_nb + j]);
 257       }
 258     }
 259   }
 260
 261   if (nb_link + nb_host == 0) {
 262     action->setCost(1.0);
 263     action->setRemains(0.0);
 264   }
 265
 266   return action;
 267 }
 268
 269 Host *HostL07Model::createHost(const char *name)
 270 {
 271   HostL07 *wk = NULL;
 272   sg_host_t sg_host = sg_host_by_name(name);
 273
 274   xbt_assert(!surf_host_resource_priv(sg_host),
 275               "Host '%s' declared several times in the platform file.",
 276               name);
 277
 278   wk = new HostL07(this, name, NULL,
 279                                   sg_host_edge(sg_host),
 280                                                   sg_host_surfcpu(sg_host));
 281
 282   xbt_lib_set(host_lib, name, SURF_HOST_LEVEL, wk);
 283
 284   return wk;
 285 }
 286
 287 Action *NetworkL07Model::communicate(RoutingEdge *src, RoutingEdge *dst,
 288                                        double size, double rate)
 289 {
 290   sg_host_t*host_list = xbt_new0(sg_host_t, 2);
 291   double *flops_amount = xbt_new0(double, 2);
 292   double *bytes_amount = xbt_new0(double, 4);
 293   Action *res = NULL;
 294
 295   host_list[0] = sg_host_by_name(src->getName());
 296   host_list[1] = sg_host_by_name(dst->getName());
 297   bytes_amount[1] = size;
 298
 299   res = p_hostModel->executeParallelTask(2, host_list,
 300                                     flops_amount,
 301                                     bytes_amount, rate);
 302
 303   return res;
 304 }
 305
 306 xbt_dynar_t HostL07Model::getRoute(Host *src, Host *dst)
 307 {
 308   xbt_dynar_t route=NULL;
 309   routing_platf->getRouteAndLatency(src->p_netElm, dst->p_netElm, &route, NULL);
 310   return route;
 311 }
 312
 313 Cpu *CpuL07Model::createCpu(const char *name,  xbt_dynar_t powerPeak,
 314                           int pstate, double power_scale,
 315                           tmgr_trace_t power_trace, int core,
 316                           e_surf_resource_state_t state_initial,
 317                           tmgr_trace_t state_trace,
 318                           xbt_dict_t cpu_properties)
 319 {
 320   double power_initial = xbt_dynar_get_as(powerPeak, pstate, double);
 321   xbt_dynar_free(&powerPeak);   // kill memory leak
 322   sg_host_t sg_host = sg_host_by_name(name);
 323
 324   xbt_assert(!surf_host_resource_priv(sg_host),
 325               "Host '%s' declared several times in the platform file.",
 326               name);
 327
 328   CpuL07 *cpu = new CpuL07(this, name, cpu_properties,
 329                                      power_initial, power_scale, power_trace,
 330                          core, state_initial, state_trace);
 331
 332   sg_host_surfcpu_set(sg_host, cpu);
 333
 334   return cpu;
 335 }
 336
 337 Link* NetworkL07Model::createLink(const char *name,
 338                                  double bw_initial,
 339                                  tmgr_trace_t bw_trace,
 340                                  double lat_initial,
 341                                  tmgr_trace_t lat_trace,
 342                                  e_surf_resource_state_t state_initial,
 343                                  tmgr_trace_t state_trace,
 344                                  e_surf_link_sharing_policy_t policy,
 345                                  xbt_dict_t properties)
 346 {
 347   xbt_assert(!Link::byName(name),
 348                  "Link '%s' declared several times in the platform file.", name);
 349
 350   return new LinkL07(this, name, properties,
 351                              bw_initial, bw_trace,
 352                                          lat_initial, lat_trace,
 353                                          state_initial, state_trace,
 354                                          policy);
 355 }
 356
 357 void HostL07Model::addTraces()
 358 {
 359   xbt_dict_cursor_t cursor = NULL;
 360   char *trace_name, *elm;
 361
 362   if (!trace_connect_list_host_avail)
 363     return;
 364
 365   /* Connect traces relative to cpu */
 366   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 367     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 368     CpuL07 *host = static_cast<CpuL07*>(sg_host_surfcpu(sg_host_by_name(elm)));
 369
 370     xbt_assert(host, "Host %s undefined", elm);
 371     xbt_assert(trace, "Trace %s undefined", trace_name);
 372
 373     host->p_stateEvent = tmgr_history_add_trace(history, trace, 0.0, 0, host);
 374   }
 375
 376   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 377     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 378     CpuL07 *host = static_cast<CpuL07*>(sg_host_surfcpu(sg_host_by_name(elm)));
 379
 380     xbt_assert(host, "Host %s undefined", elm);
 381     xbt_assert(trace, "Trace %s undefined", trace_name);
 382
 383     host->p_powerEvent = tmgr_history_add_trace(history, trace, 0.0, 0, host);
 384   }
 385
 386   /* Connect traces relative to network */
 387   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 388     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 389     LinkL07 *link = static_cast<LinkL07*>(Link::byName(elm));
 390
 391     xbt_assert(link, "Link %s undefined", elm);
 392     xbt_assert(trace, "Trace %s undefined", trace_name);
 393
 394     link->p_stateEvent = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 395   }
 396
 397   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 398     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 399     LinkL07 *link = static_cast<LinkL07*>(Link::byName(elm));
 400
 401     xbt_assert(link, "Link %s undefined", elm);
 402     xbt_assert(trace, "Trace %s undefined", trace_name);
 403
 404     link->p_bwEvent = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 405   }
 406
 407   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 408     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 409     LinkL07 *link = static_cast<LinkL07*>(Link::byName(elm));
 410
 411     xbt_assert(link, "Link %s undefined", elm);
 412     xbt_assert(trace, "Trace %s undefined", trace_name);
 413
 414     link->p_latEvent = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 415   }
 416 }
 417
 418 /************
 419  * Resource *
 420  ************/
 421
 422 HostL07::HostL07(HostModel *model, const char* name, xbt_dict_t props, RoutingEdge *netElm, Cpu *cpu)
 423   : Host(model, name, props, NULL, netElm, cpu)
 424 {
 425 }
 426
 427 double HostL07::getPowerPeakAt(int /*pstate_index*/)
 428 {
 429         THROW_UNIMPLEMENTED;
 430 }
 431
 432 int HostL07::getNbPstates()
 433 {
 434         THROW_UNIMPLEMENTED;
 435 }
 436
 437 void HostL07::setPstate(int /*pstate_index*/)
 438 {
 439         THROW_UNIMPLEMENTED;
 440 }
 441
 442 int HostL07::getPstate()
 443 {
 444         THROW_UNIMPLEMENTED;
 445 }
 446
 447 double HostL07::getConsumedEnergy()
 448 {
 449         THROW_UNIMPLEMENTED;
 450 }
 451
 452 CpuL07::CpuL07(CpuL07Model *model, const char* name, xbt_dict_t props,
 453                      double power_initial, double power_scale, tmgr_trace_t power_trace,
 454                            int core, e_surf_resource_state_t state_initial, tmgr_trace_t state_trace)
 455  : Cpu(model, name, props, lmm_constraint_new(ptask_maxmin_system, this, power_initial * power_scale),
 456            core, power_initial, power_scale)
 457 {
 458   xbt_assert(m_powerScale > 0, "Power has to be >0");
 459
 460   if (power_trace)
 461     p_powerEvent = tmgr_history_add_trace(history, power_trace, 0.0, 0, this);
 462   else
 463     p_powerEvent = NULL;
 464
 465   setState(state_initial);
 466   if (state_trace)
 467         p_stateEvent = tmgr_history_add_trace(history, state_trace, 0.0, 0, this);
 468 }
 469
 470 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props,
 471                          double bw_initial,
 472                          tmgr_trace_t bw_trace,
 473                          double lat_initial,
 474                          tmgr_trace_t lat_trace,
 475                          e_surf_resource_state_t state_initial,
 476                          tmgr_trace_t state_trace,
 477                          e_surf_link_sharing_policy_t policy)
 478  : Link(model, name, props, lmm_constraint_new(ptask_maxmin_system, this, bw_initial), history, state_trace)
 479 {
 480   m_bwCurrent = bw_initial;
 481   if (bw_trace)
 482     p_bwEvent = tmgr_history_add_trace(history, bw_trace, 0.0, 0, this);
 483
 484   setState(state_initial);
 485   m_latCurrent = lat_initial;
 486
 487   if (lat_trace)
 488         p_latEvent = tmgr_history_add_trace(history, lat_trace, 0.0, 0, this);
 489
 490   if (policy == SURF_LINK_FATPIPE)
 491         lmm_constraint_shared(getConstraint());
 492 }
 493
 494 bool CpuL07::isUsed(){
 495   return lmm_constraint_used(ptask_maxmin_system, getConstraint());
 496 }
 497
 498 bool LinkL07::isUsed(){
 499   return lmm_constraint_used(ptask_maxmin_system, getConstraint());
 500 }
 501
 502 void CpuL07::updateState(tmgr_trace_event_t event_type, double value, double /*date*/){
 503   XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
 504   if (event_type == p_powerEvent) {
 505           m_powerScale = value;
 506     lmm_update_constraint_bound(ptask_maxmin_system, getConstraint(), m_powerPeak * m_powerScale);
 507     if (tmgr_trace_event_free(event_type))
 508       p_powerEvent = NULL;
 509   } else if (event_type == p_stateEvent) {
 510     if (value > 0)
 511       setState(SURF_RESOURCE_ON);
 512     else
 513       setState(SURF_RESOURCE_OFF);
 514     if (tmgr_trace_event_free(event_type))
 515       p_stateEvent = NULL;
 516   } else {
 517     XBT_CRITICAL("Unknown event ! \n");
 518     xbt_abort();
 519   }
 520   return;
 521 }
 522
 523 void LinkL07::updateState(tmgr_trace_event_t event_type, double value, double date) {
 524   XBT_DEBUG("Updating link %s (%p) with value=%f for date=%g", getName(), this, value, date);
 525   if (event_type == p_bwEvent) {
 526     updateBandwidth(value, date);
 527     if (tmgr_trace_event_free(event_type))
 528       p_bwEvent = NULL;
 529   } else if (event_type == p_latEvent) {
 530     updateLatency(value, date);
 531     if (tmgr_trace_event_free(event_type))
 532       p_latEvent = NULL;
 533   } else if (event_type == p_stateEvent) {
 534     if (value > 0)
 535       setState(SURF_RESOURCE_ON);
 536     else
 537       setState(SURF_RESOURCE_OFF);
 538     if (tmgr_trace_event_free(event_type))
 539       p_stateEvent = NULL;
 540   } else {
 541     XBT_CRITICAL("Unknown event ! \n");
 542     xbt_abort();
 543   }
 544   return;
 545 }
 546
 547 e_surf_resource_state_t HostL07::getState() {
 548   return p_cpu->getState();
 549 }
 550
 551 Action *HostL07::execute(double size)
 552 {
 553   sg_host_t*host_list = xbt_new0(sg_host_t, 1);
 554   double *flops_amount = xbt_new0(double, 1);
 555   double *bytes_amount = xbt_new0(double, 1);
 556
 557   host_list[0] = sg_host_by_name(getName());
 558   flops_amount[0] = size;
 559
 560   return static_cast<HostL07Model*>(getModel())->executeParallelTask(1, host_list,
 561                                               flops_amount,
 562                                      bytes_amount, -1);
 563 }
 564
 565 Action *HostL07::sleep(double duration)
 566 {
 567   L07Action *action = NULL;
 568
 569   XBT_IN("(%s,%g)", getName(), duration);
 570
 571   action = static_cast<L07Action*>(execute(1.0));
 572   action->m_maxDuration = duration;
 573   action->m_suspended = 2;
 574   lmm_update_variable_weight(ptask_maxmin_system, action->getVariable(), 0.0);
 575
 576   XBT_OUT();
 577   return action;
 578 }
 579
 580 double LinkL07::getBandwidth()
 581 {
 582   return m_bwCurrent;
 583 }
 584
 585 void LinkL07::updateBandwidth(double value, double date)
 586 {
 587   m_bwCurrent = value;
 588   lmm_update_constraint_bound(ptask_maxmin_system, getConstraint(), m_bwCurrent);
 589 }
 590
 591 double LinkL07::getLatency()
 592 {
 593   return m_latCurrent;
 594 }
 595
 596 void LinkL07::updateLatency(double value, double date)
 597 {
 598   lmm_variable_t var = NULL;
 599   L07Action *action;
 600   lmm_element_t elem = NULL;
 601
 602   m_latCurrent = value;
 603   while ((var = lmm_get_var_from_cnst(ptask_maxmin_system, getConstraint(), &elem))) {
 604     action = static_cast<L07Action*>(lmm_variable_id(var));
 605     action->updateBound();
 606   }
 607 }
 608
 609
 610 bool LinkL07::isShared()
 611 {
 612   return lmm_constraint_is_shared(getConstraint());
 613 }
 614
 615 /**********
 616  * Action *
 617  **********/
 618
 619 L07Action::~L07Action(){
 620   free(p_communicationAmount);
 621   free(p_computationAmount);
 622 }
 623
 624 void L07Action::updateBound()
 625 {
 626   double lat_current = 0.0;
 627   double lat_bound = -1.0;
 628   int i, j;
 629
 630   int hostNb = p_edgeList->size();
 631
 632   for (i = 0; i < hostNb; i++) {
 633     for (j = 0; j < hostNb; j++) {
 634       xbt_dynar_t route=NULL;
 635
 636       if (p_communicationAmount[i * hostNb + j] > 0) {
 637         double lat = 0.0;
 638         routing_platf->getRouteAndLatency((*p_edgeList)[i], (*p_edgeList)[j],
 639                                                           &route, &lat);
 640
 641         lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
 642       }
 643     }
 644   }
 645   lat_bound = sg_tcp_gamma / (2.0 * lat_current);
 646   XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
 647   if ((m_latency == 0.0) && (m_suspended == 0)) {
 648     if (m_rate < 0)
 649       lmm_update_variable_bound(ptask_maxmin_system, getVariable(), lat_bound);
 650     else
 651       lmm_update_variable_bound(ptask_maxmin_system, getVariable(), min(m_rate, lat_bound));
 652   }
 653 }
 654
 655 int L07Action::unref()
 656 {
 657   m_refcount--;
 658   if (!m_refcount) {
 659     if (action_hook.is_linked())
 660           p_stateSet->erase(p_stateSet->iterator_to(*this));
 661     if (getVariable())
 662       lmm_variable_free(ptask_maxmin_system, getVariable());
 663     delete this;
 664     return 1;
 665   }
 666   return 0;
 667 }
 668
 669 void L07Action::cancel()
 670 {
 671   setState(SURF_ACTION_FAILED);
 672   return;
 673 }
 674
 675 void L07Action::suspend()
 676 {
 677   XBT_IN("(%p))", this);
 678   if (m_suspended != 2) {
 679     m_suspended = 1;
 680     lmm_update_variable_weight(ptask_maxmin_system, getVariable(), 0.0);
 681   }
 682   XBT_OUT();
 683 }
 684
 685 void L07Action::resume()
 686 {
 687   XBT_IN("(%p)", this);
 688   if (m_suspended != 2) {
 689     lmm_update_variable_weight(ptask_maxmin_system, getVariable(), 1.0);
 690     m_suspended = 0;
 691   }
 692   XBT_OUT();
 693 }
 694
 695 bool L07Action::isSuspended()
 696 {
 697   return m_suspended == 1;
 698 }
 699
 700 void L07Action::setMaxDuration(double duration)
 701 {                               /* FIXME: should inherit */
 702   XBT_IN("(%p,%g)", this, duration);
 703   m_maxDuration = duration;
 704   XBT_OUT();
 705 }
 706
 707 void L07Action::setPriority(double priority)
 708 {                               /* FIXME: should inherit */
 709   XBT_IN("(%p,%g)", this, priority);
 710   m_priority = priority;
 711   XBT_OUT();
 712 }
 713
 714 double L07Action::getRemains()
 715 {
 716   XBT_IN("(%p)", this);
 717   XBT_OUT();
 718   return m_remains;
 719 }