src/surf/workstation.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 "xbt/ex.h"
   8 #include "xbt/dict.h"
   9 #include "portable.h"
  10 #include "surf_private.h"
  11 #include "storage_private.h"
  12 #include "surf/surf_resource.h"
  13 #include "simgrid/sg_config.h"
  14 #include "workstation_private.h"
  15 #include "vm_workstation_private.h"
  16 #include "cpu_cas01_private.h"
  17 #include "maxmin_private.h"
  18
  19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_workstation, surf,
  20                                 "Logging specific to the SURF workstation module");
  21
  22 surf_model_t surf_workstation_model = NULL;
  23
  24
  25 static void workstation_new(sg_platf_host_cbarg_t host)
  26 {
  27   const char *name = host->id;
  28
  29   /* NOTE: The properties object is NULL, because the current code uses that of
  30    * that of a cpu resource. */
  31   workstation_CLM03_t ws = (workstation_CLM03_t) surf_resource_new(sizeof(s_workstation_CLM03_t), surf_workstation_model, name, NULL);
  32
  33   ws->storage = xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
  34   ws->net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  35
  36   XBT_DEBUG("Create ws %s with %ld mounted disks", name, xbt_dynar_length(ws->storage));
  37   xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, ws);
  38 }
  39
  40
  41 static void ws_parallel_action_cancel(surf_action_t action)
  42 {
  43   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
  44 }
  45
  46 static int ws_parallel_action_free(surf_action_t action)
  47 {
  48   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
  49   return -1;
  50 }
  51
  52 int ws_action_unref(surf_action_t action)
  53 {
  54   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  55     return surf_network_model->action_unref(action);
  56   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  57     return action->model_obj->action_unref(action);
  58       // previously was: Adrien/Arnaud 6 feb
  59           // surf_cpu_model->action_unref(action);
  60   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  61     return ws_parallel_action_free(action);
  62   else
  63     DIE_IMPOSSIBLE;
  64   return 0;
  65 }
  66
  67 void ws_action_cancel(surf_action_t action)
  68 {
  69   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  70     surf_network_model->action_cancel(action);
  71   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  72     action->model_obj->action_cancel(action);
  73   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  74     ws_parallel_action_cancel(action);
  75   else
  76     DIE_IMPOSSIBLE;
  77   return;
  78 }
  79
  80 static void ws_action_state_set(surf_action_t action,
  81                                 e_surf_action_state_t state)
  82 {
  83   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  84     surf_network_model->action_state_set(action, state);
  85   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  86     action->model_obj->action_state_set(action, state);
  87   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  88     surf_action_state_set(action, state);
  89   else
  90     DIE_IMPOSSIBLE;
  91   return;
  92 }
  93
  94
  95 /* -- The callback functions at model_private -- */
  96 /* These callbacks are also used for the vm workstation model. */
  97 int ws_resource_used(void *resource_id)
  98 {
  99   /* This model does not implement parallel tasks */
 100   THROW_IMPOSSIBLE;
 101   return -1;
 102 }
 103
 104
 105 /* TODO: The current code would be slow due to the iteration. Later, we can
 106  * make it faster. */
 107 static int constraint_is_active(cpu_Cas01_t cpu_cas01)
 108 {
 109   surf_model_t cpu_model = cpu_cas01->generic_resource.model;
 110   lmm_system_t sys = cpu_model->model_private->maxmin_system;
 111   int found = 0;
 112   lmm_constraint_t cnst_tmp;
 113
 114   xbt_swag_foreach(cnst_tmp, &sys->active_constraint_set) {
 115     if (cnst_tmp == cpu_cas01->constraint) {
 116       found = 1;
 117       break;
 118     }
 119   }
 120
 121   return found;
 122 }
 123
 124 static void adjust_weight_of_dummy_cpu_actions(void)
 125 {
 126   /* iterate for all hosts including virtual machines */
 127   xbt_lib_cursor_t cursor;
 128   char *key;
 129   void **ind_host;
 130
 131   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 132     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 133     cpu_Cas01_t cpu_cas01 = ind_host[SURF_CPU_LEVEL];
 134
 135     if (!ws_clm03)
 136       continue;
 137     /* skip if it is not a virtual machine */
 138     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 139       continue;
 140     xbt_assert(cpu_cas01, "cpu-less workstation");
 141
 142     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 143     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 144
 145     if (constraint_is_active(cpu_cas01)) {
 146       /* some tasks exist on this VM */
 147       XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
 148
 149       /* FIXME: we shoud use lmm_update_variable_weight() ? */
 150       /* FIXME: If we assgign 1.05 and 0.05, the system makes apparently wrong values. */
 151       surf_action_set_priority(ws_vm2013->cpu_action, 1);
 152
 153     } else {
 154       /* no task exits on this VM */
 155       XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
 156
 157       surf_action_set_priority(ws_vm2013->cpu_action, 0);
 158     }
 159   }
 160 }
 161
 162
 163 double ws_share_resources(surf_model_t workstation_model, double now)
 164 {
 165   if (workstation_model->type == SURF_MODEL_TYPE_WORKSTATION)
 166     adjust_weight_of_dummy_cpu_actions();
 167
 168   /* Invoke the share_resources() callback of the physical cpu model object and
 169    * the network model objects. */
 170   surf_model_t cpu_model = workstation_model->extension.workstation.cpu_model;
 171   surf_model_t net_model = surf_network_model;
 172
 173   double min_by_cpu = cpu_model->model_private->share_resources(cpu_model, now);
 174   double min_by_net = net_model->model_private->share_resources(net_model, now);
 175
 176   XBT_DEBUG("model %p, %s min_by_cpu %f, %s min_by_net %f",
 177       workstation_model, cpu_model->name, min_by_cpu, net_model->name, min_by_net);
 178
 179   if (min_by_cpu >= 0.0 && min_by_net >= 0.0)
 180     return min(min_by_cpu, min_by_net);
 181   else if (min_by_cpu >= 0.0)
 182     return min_by_cpu;
 183   else if (min_by_net >= 0.0)
 184     return min_by_net;
 185   else
 186     return min_by_cpu;  /* probably min_by_cpu == min_by_net == -1 */
 187 }
 188
 189 void ws_update_actions_state(surf_model_t workstation_model, double now, double delta)
 190 {
 191   return;
 192 }
 193
 194 void ws_update_resource_state(void *id, tmgr_trace_event_t event_type, double value, double date)
 195 {
 196   /* This model does not implement parallel tasks */
 197   THROW_IMPOSSIBLE;
 198 }
 199
 200 void ws_finalize(surf_model_t workstation_model)
 201 {
 202   surf_model_exit(workstation_model);
 203   workstation_model = NULL;
 204 }
 205
 206
 207
 208 surf_action_t ws_execute(void *workstation, double size)
 209 {
 210   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 211   return cpu->model->extension.cpu.execute(workstation, size);
 212 }
 213
 214 surf_action_t ws_action_sleep(void *workstation, double duration)
 215 {
 216   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 217   return cpu->model->extension.cpu.sleep(workstation, duration);
 218 }
 219
 220 void ws_action_suspend(surf_action_t action)
 221 {
 222   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 223     surf_network_model->suspend(action);
 224   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 225     action->model_obj->suspend(action);
 226   else
 227     DIE_IMPOSSIBLE;
 228 }
 229
 230 void ws_action_resume(surf_action_t action)
 231 {
 232   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 233     surf_network_model->resume(action);
 234   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 235     action->model_obj->resume(action);
 236   else
 237     DIE_IMPOSSIBLE;
 238 }
 239
 240 static int ws_action_is_suspended(surf_action_t action)
 241 {
 242   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 243     return surf_network_model->is_suspended(action);
 244   if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 245     return action->model_obj->is_suspended(action);
 246   DIE_IMPOSSIBLE;
 247   return -1;
 248 }
 249
 250 static void ws_action_set_max_duration(surf_action_t action,
 251                                        double duration)
 252 {
 253   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 254     surf_network_model->set_max_duration(action, duration);
 255   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 256     action->model_obj->set_max_duration(action, duration);
 257   else
 258     DIE_IMPOSSIBLE;
 259 }
 260
 261 void ws_action_set_priority(surf_action_t action, double priority)
 262 {
 263   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 264     surf_network_model->set_priority(action, priority);
 265   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 266     action->model_obj->set_priority(action, priority);
 267   else
 268     DIE_IMPOSSIBLE;
 269 }
 270
 271 #ifdef HAVE_TRACING
 272 static void ws_action_set_category(surf_action_t action, const char *category)
 273 {
 274   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 275     surf_network_model->set_category(action, category);
 276   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 277     action->model_obj->set_category(action, category);
 278   else
 279     DIE_IMPOSSIBLE;
 280 }
 281 #endif
 282
 283 #ifdef HAVE_LATENCY_BOUND_TRACKING
 284 static int ws_get_latency_limited(surf_action_t action)
 285 {
 286   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 287     return surf_network_model->get_latency_limited(action);
 288   else
 289     return 0;
 290 }
 291 #endif
 292
 293 double ws_action_get_remains(surf_action_t action)
 294 {
 295   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 296     return surf_network_model->get_remains(action);
 297   if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 298     return action->model_obj->get_remains(action);
 299   DIE_IMPOSSIBLE;
 300   return -1.0;
 301 }
 302
 303 static surf_action_t ws_communicate(void *workstation_src,
 304                                     void *workstation_dst, double size,
 305                                     double rate)
 306 {
 307   workstation_CLM03_t src = surf_workstation_resource_priv(workstation_src);
 308   workstation_CLM03_t dst = surf_workstation_resource_priv(workstation_dst);
 309   return surf_network_model->extension.network.
 310       communicate(src->net_elm,
 311                   dst->net_elm, size, rate);
 312 }
 313
 314 e_surf_resource_state_t ws_get_state(void *workstation)
 315 {
 316   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 317   return cpu->model->extension.cpu.get_state(workstation);
 318 }
 319
 320 static double ws_get_speed(void *workstation, double load)
 321 {
 322   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 323   return cpu->model->extension.cpu.get_speed(workstation, load);
 324 }
 325
 326 static double ws_get_available_speed(void *workstation)
 327 {
 328   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 329   return cpu->model->extension.cpu.get_available_speed(workstation);
 330 }
 331
 332 static surf_action_t ws_execute_parallel_task(int workstation_nb,
 333                                               void **workstation_list,
 334                                               double *computation_amount,
 335                                               double *communication_amount,
 336                                               double rate)
 337 {
 338 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
 339   if ((workstation_nb == 1)
 340       && (cost_or_zero(communication_amount, 0) == 0.0))
 341     return ws_execute(workstation_list[0], computation_amount[0]);
 342   else if ((workstation_nb == 1)
 343            && (cost_or_zero(computation_amount, 0) == 0.0))
 344     return ws_communicate(workstation_list[0], workstation_list[0],communication_amount[0], rate);
 345   else if ((workstation_nb == 2)
 346              && (cost_or_zero(computation_amount, 0) == 0.0)
 347              && (cost_or_zero(computation_amount, 1) == 0.0)) {
 348     int i,nb = 0;
 349     double value = 0.0;
 350
 351     for (i = 0; i < workstation_nb * workstation_nb; i++) {
 352       if (cost_or_zero(communication_amount, i) > 0.0) {
 353         nb++;
 354         value = cost_or_zero(communication_amount, i);
 355       }
 356     }
 357     if (nb == 1)
 358       return ws_communicate(workstation_list[0], workstation_list[1],value, rate);
 359   }
 360 #undef cost_or_zero
 361
 362   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
 363   return NULL;
 364 }
 365
 366
 367 /* returns an array of network_link_CM02_t */
 368 static xbt_dynar_t ws_get_route(void *workstation_src, void *workstation_dst)
 369 {
 370   XBT_DEBUG("ws_get_route");
 371   workstation_CLM03_t src = surf_workstation_resource_priv(workstation_src);
 372   workstation_CLM03_t dst = surf_workstation_resource_priv(workstation_dst);
 373   return surf_network_model->extension.
 374       network.get_route(src->net_elm,
 375                   dst->net_elm);
 376 }
 377
 378 static double ws_get_link_bandwidth(const void *link)
 379 {
 380   return surf_network_model->extension.network.get_link_bandwidth(link);
 381 }
 382
 383 static double ws_get_link_latency(const void *link)
 384 {
 385   return surf_network_model->extension.network.get_link_latency(link);
 386 }
 387
 388 static int ws_link_shared(const void *link)
 389 {
 390   return surf_network_model->extension.network.link_shared(link);
 391 }
 392
 393 static xbt_dict_t ws_get_properties(const void *ws)
 394 {
 395   return surf_resource_properties(surf_cpu_resource_priv(ws));
 396 }
 397
 398 static storage_t find_storage_on_mount_list(void *workstation,const char* storage)
 399 {
 400   storage_t st = NULL;
 401   s_mount_t mnt;
 402   unsigned int cursor;
 403   workstation_CLM03_t ws = (workstation_CLM03_t) surf_workstation_resource_priv(workstation);
 404   xbt_dynar_t storage_list = ws->storage;
 405
 406   XBT_DEBUG("Search for storage name '%s' on '%s'",storage,ws->generic_resource.name);
 407   xbt_dynar_foreach(storage_list,cursor,mnt)
 408   {
 409     XBT_DEBUG("See '%s'",mnt.name);
 410     if(!strcmp(storage,mnt.name)){
 411       st = mnt.id;
 412       break;
 413     }
 414   }
 415   if(!st) xbt_die("Can't find mount '%s' for '%s'",storage,ws->generic_resource.name);
 416   return st;
 417 }
 418
 419 static surf_action_t ws_action_open(void *workstation, const char* mount, const char* path, const char* mode)
 420 {
 421   storage_t st = find_storage_on_mount_list(workstation, mount);
 422   XBT_DEBUG("OPEN on disk '%s'",st->generic_resource.name);
 423   surf_model_t model = st->generic_resource.model;
 424   return model->extension.storage.open(st, mount, path, mode);
 425 }
 426
 427 static surf_action_t ws_action_close(void *workstation, surf_file_t fp)
 428 {
 429   storage_t st = find_storage_on_mount_list(workstation, fp->storage);
 430   XBT_DEBUG("CLOSE on disk '%s'",st->generic_resource.name);
 431   surf_model_t model = st->generic_resource.model;
 432   return model->extension.storage.close(st, fp);
 433 }
 434
 435 static surf_action_t ws_action_read(void *workstation, void* ptr, size_t size, size_t nmemb, surf_file_t stream)
 436 {
 437   storage_t st = find_storage_on_mount_list(workstation, stream->storage);
 438   XBT_DEBUG("READ on disk '%s'",st->generic_resource.name);
 439   surf_model_t model = st->generic_resource.model;
 440   return model->extension.storage.read(st, ptr, (double)size, nmemb, stream);
 441 }
 442
 443 static surf_action_t ws_action_write(void *workstation, const void* ptr, size_t size, size_t nmemb, surf_file_t stream)
 444 {
 445   storage_t st = find_storage_on_mount_list(workstation, stream->storage);
 446   XBT_DEBUG("WRITE on disk '%s'",st->generic_resource.name);
 447   surf_model_t model = st->generic_resource.model;
 448   return model->extension.storage.write(st,  ptr, size, nmemb, stream);
 449 }
 450
 451 static surf_action_t ws_action_stat(void *workstation, surf_file_t stream)
 452 {
 453   storage_t st = find_storage_on_mount_list(workstation, stream->storage);
 454   XBT_DEBUG("STAT on disk '%s'",st->generic_resource.name);
 455   surf_model_t model = st->generic_resource.model;
 456   return model->extension.storage.stat(st,  stream);
 457 }
 458
 459 static surf_action_t ws_action_unlink(void *workstation, surf_file_t stream)
 460 {
 461   storage_t st = find_storage_on_mount_list(workstation, stream->storage);
 462   XBT_DEBUG("UNLINK on disk '%s'",st->generic_resource.name);
 463   surf_model_t model = st->generic_resource.model;
 464   return model->extension.storage.unlink(st,  stream);
 465 }
 466
 467 static surf_action_t ws_action_ls(void *workstation, const char* mount, const char *path)
 468 {
 469   XBT_DEBUG("LS on mount '%s' and file '%s'",mount, path);
 470   storage_t st = find_storage_on_mount_list(workstation, mount);
 471   surf_model_t model = st->generic_resource.model;
 472   return model->extension.storage.ls(st, path);
 473 }
 474
 475 void ws_get_params(void *ws, ws_params_t params)
 476 {
 477   workstation_CLM03_t ws_clm03 = surf_workstation_resource_priv(ws);
 478   memcpy(params, &ws_clm03->params, sizeof(s_ws_params_t));
 479 }
 480
 481 void ws_set_params(void *ws, ws_params_t params)
 482 {
 483   workstation_CLM03_t ws_clm03 = surf_workstation_resource_priv(ws);
 484   /* may check something here. */
 485   memcpy(&ws_clm03->params, params, sizeof(s_ws_params_t));
 486 }
 487
 488 static xbt_dynar_t ws_get_vms(void *pm)
 489 {
 490   xbt_dynar_t dyn = xbt_dynar_new(sizeof(smx_host_t), NULL);
 491
 492   /* iterate for all hosts including virtual machines */
 493   xbt_lib_cursor_t cursor;
 494   char *key;
 495   void **ind_host;
 496   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 497     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 498     if (!ws_clm03)
 499       continue;
 500     /* skip if it is not a virtual machine */
 501     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 502       continue;
 503
 504     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 505     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 506     if (pm == ws_vm2013->sub_ws)
 507       xbt_dynar_push(dyn, &ws_vm2013->sub_ws);
 508   }
 509
 510   return dyn;
 511 }
 512
 513
 514 static void surf_workstation_model_init_internal(void)
 515 {
 516   surf_model_t model = surf_model_init();
 517
 518   model->name = "Workstation";
 519   model->type = SURF_MODEL_TYPE_WORKSTATION;
 520   model->action_unref     = ws_action_unref;
 521   model->action_cancel    = ws_action_cancel;
 522   model->action_state_set = ws_action_state_set;
 523
 524   model->model_private->resource_used         = ws_resource_used;
 525   model->model_private->share_resources       = ws_share_resources;
 526   model->model_private->update_actions_state  = ws_update_actions_state;
 527   model->model_private->update_resource_state = ws_update_resource_state;
 528   model->model_private->finalize              = ws_finalize;
 529
 530   model->suspend          = ws_action_suspend;
 531   model->resume           = ws_action_resume;
 532   model->is_suspended     = ws_action_is_suspended;
 533   model->set_max_duration = ws_action_set_max_duration;
 534   model->set_priority     = ws_action_set_priority;
 535   #ifdef HAVE_TRACING
 536   model->set_category     = ws_action_set_category;
 537   #endif
 538   model->get_remains      = ws_action_get_remains;
 539   #ifdef HAVE_LATENCY_BOUND_TRACKING
 540   model->get_latency_limited = ws_get_latency_limited;
 541   #endif
 542
 543   /* For VM support, we have a surf cpu model object for each workstation model
 544    * object. The physical workstation model object has the cpu model object of
 545    * the physical machine layer. */
 546   xbt_assert(surf_cpu_model_pm);
 547   model->extension.workstation.cpu_model = surf_cpu_model_pm;
 548
 549   model->extension.workstation.execute   = ws_execute;
 550   model->extension.workstation.sleep     = ws_action_sleep;
 551   model->extension.workstation.get_state = ws_get_state;
 552   model->extension.workstation.get_speed = ws_get_speed;
 553   model->extension.workstation.get_available_speed = ws_get_available_speed;
 554
 555   model->extension.workstation.communicate           = ws_communicate;
 556   model->extension.workstation.get_route             = ws_get_route;
 557   model->extension.workstation.execute_parallel_task = ws_execute_parallel_task;
 558   model->extension.workstation.get_link_bandwidth    = ws_get_link_bandwidth;
 559   model->extension.workstation.get_link_latency      = ws_get_link_latency;
 560   model->extension.workstation.link_shared           = ws_link_shared;
 561   model->extension.workstation.get_properties        = ws_get_properties;
 562
 563   model->extension.workstation.open   = ws_action_open;
 564   model->extension.workstation.close  = ws_action_close;
 565   model->extension.workstation.read   = ws_action_read;
 566   model->extension.workstation.write  = ws_action_write;
 567   model->extension.workstation.stat   = ws_action_stat;
 568   model->extension.workstation.unlink = ws_action_unlink;
 569   model->extension.workstation.ls     = ws_action_ls;
 570
 571   model->extension.workstation.get_params = ws_get_params;
 572   model->extension.workstation.set_params = ws_set_params;
 573   model->extension.workstation.get_vms    = ws_get_vms;
 574
 575   surf_workstation_model = model;
 576 }
 577
 578 void surf_workstation_model_init_current_default(void)
 579 {
 580   xbt_cfg_setdefault_int(_sg_cfg_set, "network/crosstraffic", 1);
 581   surf_cpu_model_init_Cas01();
 582   surf_network_model_init_LegrandVelho();
 583
 584   /* surf_cpu_mode_pm and surf_network_model must be initialized in advance. */
 585   xbt_assert(surf_cpu_model_pm);
 586   xbt_assert(surf_network_model);
 587   surf_workstation_model_init_internal();
 588
 589   xbt_dynar_push(model_list, &surf_workstation_model);
 590   xbt_dynar_push(model_list_invoke, &surf_workstation_model);
 591   sg_platf_host_add_cb(workstation_new);
 592 }
 593
 594 void surf_workstation_model_init_compound()
 595 {
 596   xbt_assert(surf_cpu_model_pm, "No CPU model defined yet!");
 597   xbt_assert(surf_network_model, "No network model defined yet!");
 598
 599   surf_workstation_model_init_internal();
 600   xbt_dynar_push(model_list, &surf_workstation_model);
 601   xbt_dynar_push(model_list_invoke, &surf_workstation_model);
 602   sg_platf_host_add_cb(workstation_new);
 603 }