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 static void ws_parallel_action_cancel(surf_action_t action)
  41 {
  42   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
  43 }
  44
  45 static int ws_parallel_action_free(surf_action_t action)
  46 {
  47   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
  48   return -1;
  49 }
  50
  51 int ws_action_unref(surf_action_t action)
  52 {
  53   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  54     return surf_network_model->action_unref(action);
  55   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  56     return action->model_obj->action_unref(action);
  57       // previously was: Adrien/Arnaud 6 feb
  58           // surf_cpu_model->action_unref(action);
  59   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  60     return ws_parallel_action_free(action);
  61   else
  62     DIE_IMPOSSIBLE;
  63   return 0;
  64 }
  65
  66 void ws_action_cancel(surf_action_t action)
  67 {
  68   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  69     surf_network_model->action_cancel(action);
  70   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  71     action->model_obj->action_cancel(action);
  72   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  73     ws_parallel_action_cancel(action);
  74   else
  75     DIE_IMPOSSIBLE;
  76   return;
  77 }
  78
  79 static void ws_action_state_set(surf_action_t action,
  80                                 e_surf_action_state_t state)
  81 {
  82   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
  83     surf_network_model->action_state_set(action, state);
  84   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
  85     action->model_obj->action_state_set(action, state);
  86   else if (action->model_obj->type == SURF_MODEL_TYPE_WORKSTATION)
  87     surf_action_state_set(action, state);
  88   else
  89     DIE_IMPOSSIBLE;
  90   return;
  91 }
  92
  93
  94 /* -- The callback functions at model_private -- */
  95 /* These callbacks are also used for the vm workstation model. */
  96 int ws_resource_used(void *resource_id)
  97 {
  98   /* This model does not implement parallel tasks */
  99   THROW_IMPOSSIBLE;
 100   return -1;
 101 }
 102
 103
 104 /* TODO: The current code would be slow due to the iteration. Later, we can
 105  * make it faster. */
 106 static int constraint_is_active(cpu_Cas01_t cpu_cas01)
 107 {
 108   surf_model_t cpu_model = cpu_cas01->generic_resource.model;
 109   lmm_system_t sys = cpu_model->model_private->maxmin_system;
 110   int found = 0;
 111   lmm_constraint_t cnst_tmp;
 112
 113   xbt_swag_foreach(cnst_tmp, &sys->active_constraint_set) {
 114     if (cnst_tmp == cpu_cas01->constraint) {
 115       found = 1;
 116       break;
 117     }
 118   }
 119
 120   return found;
 121 }
 122
 123 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
 124  * constraint (capacity) of the VM in the PM layer. If the VM does not have any
 125  * active task, the dummy CPU action must be deactivated, so that the VM does
 126  * not get any CPU share in the PM layer. */
 127 static void adjust_weight_of_dummy_cpu_actions(void)
 128 {
 129   /* iterate for all hosts including virtual machines */
 130   xbt_lib_cursor_t cursor;
 131   char *key;
 132   void **ind_host;
 133
 134   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 135     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 136     cpu_Cas01_t cpu_cas01 = ind_host[SURF_CPU_LEVEL];
 137
 138     if (!ws_clm03)
 139       continue;
 140     /* skip if it is not a virtual machine */
 141     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 142       continue;
 143     xbt_assert(cpu_cas01, "cpu-less workstation");
 144
 145     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 146     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 147
 148     if (constraint_is_active(cpu_cas01)) {
 149       /* some tasks exist on this VM */
 150       XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
 151
 152       /* FIXME: we shoud use lmm_update_variable_weight() ? */
 153       /* FIXME: If we assgign 1.05 and 0.05, the system makes apparently wrong values. */
 154       surf_action_set_priority(ws_vm2013->cpu_action, 1);
 155
 156     } else {
 157       /* no task exits on this VM */
 158       XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
 159
 160       surf_action_set_priority(ws_vm2013->cpu_action, 0);
 161     }
 162   }
 163 }
 164
 165
 166 double ws_share_resources(surf_model_t workstation_model, double now)
 167 {
 168   if (workstation_model->type == SURF_MODEL_TYPE_WORKSTATION)
 169     adjust_weight_of_dummy_cpu_actions();
 170
 171   /* Invoke the share_resources() callback of the physical cpu model object and
 172    * the network model objects. */
 173   surf_model_t cpu_model = workstation_model->extension.workstation.cpu_model;
 174   surf_model_t net_model = surf_network_model;
 175
 176   double min_by_cpu = cpu_model->model_private->share_resources(cpu_model, now);
 177   double min_by_net = net_model->model_private->share_resources(net_model, now);
 178
 179   XBT_DEBUG("model %p, %s min_by_cpu %f, %s min_by_net %f",
 180       workstation_model, cpu_model->name, min_by_cpu, net_model->name, min_by_net);
 181
 182   if (min_by_cpu >= 0.0 && min_by_net >= 0.0)
 183     return min(min_by_cpu, min_by_net);
 184   else if (min_by_cpu >= 0.0)
 185     return min_by_cpu;
 186   else if (min_by_net >= 0.0)
 187     return min_by_net;
 188   else
 189     return min_by_cpu;  /* probably min_by_cpu == min_by_net == -1 */
 190 }
 191
 192 void ws_update_actions_state(surf_model_t workstation_model, double now, double delta)
 193 {
 194   return;
 195 }
 196
 197 void ws_update_resource_state(void *id, tmgr_trace_event_t event_type, double value, double date)
 198 {
 199   /* This model does not implement parallel tasks */
 200   THROW_IMPOSSIBLE;
 201 }
 202
 203 void ws_finalize(surf_model_t workstation_model)
 204 {
 205   surf_model_exit(workstation_model);
 206   workstation_model = NULL;
 207 }
 208
 209
 210
 211 surf_action_t ws_execute(void *workstation, double size)
 212 {
 213   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 214   return cpu->model->extension.cpu.execute(workstation, size);
 215 }
 216
 217 surf_action_t ws_action_sleep(void *workstation, double duration)
 218 {
 219   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 220   return cpu->model->extension.cpu.sleep(workstation, duration);
 221 }
 222
 223 void ws_action_suspend(surf_action_t action)
 224 {
 225   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 226     surf_network_model->suspend(action);
 227   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 228     action->model_obj->suspend(action);
 229   else
 230     DIE_IMPOSSIBLE;
 231 }
 232
 233 void ws_action_resume(surf_action_t action)
 234 {
 235   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 236     surf_network_model->resume(action);
 237   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 238     action->model_obj->resume(action);
 239   else
 240     DIE_IMPOSSIBLE;
 241 }
 242
 243 static int ws_action_is_suspended(surf_action_t action)
 244 {
 245   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 246     return surf_network_model->is_suspended(action);
 247   if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 248     return action->model_obj->is_suspended(action);
 249   DIE_IMPOSSIBLE;
 250   return -1;
 251 }
 252
 253 static void ws_action_set_max_duration(surf_action_t action,
 254                                        double duration)
 255 {
 256   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 257     surf_network_model->set_max_duration(action, duration);
 258   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 259     action->model_obj->set_max_duration(action, duration);
 260   else
 261     DIE_IMPOSSIBLE;
 262 }
 263
 264 void ws_action_set_priority(surf_action_t action, double priority)
 265 {
 266   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 267     surf_network_model->set_priority(action, priority);
 268   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 269     action->model_obj->set_priority(action, priority);
 270   else
 271     DIE_IMPOSSIBLE;
 272 }
 273
 274 void ws_action_set_bound(surf_action_t action, double bound)
 275 {
 276   /* FIXME: only for CPU model object? */
 277   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 278     surf_network_model->set_bound(action, bound);
 279   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 280     action->model_obj->set_bound(action, bound);
 281   else
 282     DIE_IMPOSSIBLE;
 283 }
 284
 285 #ifdef HAVE_TRACING
 286 static void ws_action_set_category(surf_action_t action, const char *category)
 287 {
 288   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 289     surf_network_model->set_category(action, category);
 290   else if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 291     action->model_obj->set_category(action, category);
 292   else
 293     DIE_IMPOSSIBLE;
 294 }
 295 #endif
 296
 297 #ifdef HAVE_LATENCY_BOUND_TRACKING
 298 static int ws_get_latency_limited(surf_action_t action)
 299 {
 300   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 301     return surf_network_model->get_latency_limited(action);
 302   else
 303     return 0;
 304 }
 305 #endif
 306
 307 double ws_action_get_remains(surf_action_t action)
 308 {
 309   if (action->model_obj->type == SURF_MODEL_TYPE_NETWORK)
 310     return surf_network_model->get_remains(action);
 311   if (action->model_obj->type == SURF_MODEL_TYPE_CPU)
 312     return action->model_obj->get_remains(action);
 313   DIE_IMPOSSIBLE;
 314   return -1.0;
 315 }
 316
 317 static surf_action_t ws_communicate(void *workstation_src,
 318                                     void *workstation_dst, double size,
 319                                     double rate)
 320 {
 321   workstation_CLM03_t src = surf_workstation_resource_priv(workstation_src);
 322   workstation_CLM03_t dst = surf_workstation_resource_priv(workstation_dst);
 323   return surf_network_model->extension.network.
 324       communicate(src->net_elm,
 325                   dst->net_elm, size, rate);
 326 }
 327
 328 e_surf_resource_state_t ws_get_state(void *workstation)
 329 {
 330   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 331   return cpu->model->extension.cpu.get_state(workstation);
 332 }
 333
 334 static void ws_set_state(void *workstation, e_surf_resource_state_t state)
 335 {
 336   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 337   cpu->model->extension.cpu.set_state(workstation, state);
 338 }
 339
 340 double ws_get_speed(void *workstation, double load)
 341 {
 342   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 343   return cpu->model->extension.cpu.get_speed(workstation, load);
 344 }
 345
 346 static int ws_get_core(void *workstation)
 347 {
 348   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 349   return cpu->model->extension.cpu.get_core(workstation);
 350 }
 351 static double ws_get_available_speed(void *workstation)
 352 {
 353   surf_resource_t cpu = ((surf_resource_t) surf_cpu_resource_priv(workstation));
 354   return cpu->model->extension.cpu.get_available_speed(workstation);
 355 }
 356
 357 static surf_action_t ws_execute_parallel_task(int workstation_nb,
 358                                               void **workstation_list,
 359                                               double *computation_amount,
 360                                               double *communication_amount,
 361                                               double rate)
 362 {
 363 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
 364   if ((workstation_nb == 1)
 365       && (cost_or_zero(communication_amount, 0) == 0.0))
 366     return ws_execute(workstation_list[0], computation_amount[0]);
 367   else if ((workstation_nb == 1)
 368            && (cost_or_zero(computation_amount, 0) == 0.0))
 369     return ws_communicate(workstation_list[0], workstation_list[0],communication_amount[0], rate);
 370   else if ((workstation_nb == 2)
 371              && (cost_or_zero(computation_amount, 0) == 0.0)
 372              && (cost_or_zero(computation_amount, 1) == 0.0)) {
 373     int i,nb = 0;
 374     double value = 0.0;
 375
 376     for (i = 0; i < workstation_nb * workstation_nb; i++) {
 377       if (cost_or_zero(communication_amount, i) > 0.0) {
 378         nb++;
 379         value = cost_or_zero(communication_amount, i);
 380       }
 381     }
 382     if (nb == 1)
 383       return ws_communicate(workstation_list[0], workstation_list[1],value, rate);
 384   }
 385 #undef cost_or_zero
 386
 387   THROW_UNIMPLEMENTED;          /* This model does not implement parallel tasks */
 388   return NULL;
 389 }
 390
 391
 392 /* returns an array of network_link_CM02_t */
 393 static xbt_dynar_t ws_get_route(void *workstation_src, void *workstation_dst)
 394 {
 395   XBT_DEBUG("ws_get_route");
 396   workstation_CLM03_t src = surf_workstation_resource_priv(workstation_src);
 397   workstation_CLM03_t dst = surf_workstation_resource_priv(workstation_dst);
 398   return surf_network_model->extension.
 399       network.get_route(src->net_elm,
 400                   dst->net_elm);
 401 }
 402
 403 static double ws_get_link_bandwidth(const void *link)
 404 {
 405   return surf_network_model->extension.network.get_link_bandwidth(link);
 406 }
 407
 408 static double ws_get_link_latency(const void *link)
 409 {
 410   return surf_network_model->extension.network.get_link_latency(link);
 411 }
 412
 413 static int ws_link_shared(const void *link)
 414 {
 415   return surf_network_model->extension.network.link_shared(link);
 416 }
 417
 418 static xbt_dict_t ws_get_properties(const void *ws)
 419 {
 420   return surf_resource_properties(surf_cpu_resource_priv(ws));
 421 }
 422
 423 static storage_t find_storage_on_mount_list(void *workstation,const char* storage)
 424 {
 425   storage_t st = NULL;
 426   s_mount_t mnt;
 427   unsigned int cursor;
 428   workstation_CLM03_t ws = (workstation_CLM03_t) surf_workstation_resource_priv(workstation);
 429   xbt_dynar_t storage_list = ws->storage;
 430
 431   XBT_DEBUG("Search for storage name '%s' on '%s'",storage,ws->generic_resource.name);
 432   xbt_dynar_foreach(storage_list,cursor,mnt)
 433   {
 434     XBT_DEBUG("See '%s'",mnt.name);
 435     if(!strcmp(storage,mnt.name)){
 436       st = mnt.id;
 437       break;
 438     }
 439   }
 440   if(!st) xbt_die("Can't find mount '%s' for '%s'",storage,ws->generic_resource.name);
 441   return st;
 442 }
 443
 444 static surf_action_t ws_action_open(void *workstation, const char* mount,
 445                                     const char* path)
 446 {
 447   storage_t st = find_storage_on_mount_list(workstation, mount);
 448   XBT_DEBUG("OPEN on disk '%s'",st->generic_resource.name);
 449   surf_model_t model = st->generic_resource.model;
 450   return model->extension.storage.open(st, mount, path);
 451 }
 452
 453 static surf_action_t ws_action_close(void *workstation, surf_file_t fd)
 454 {
 455   storage_t st = find_storage_on_mount_list(workstation, fd->storage);
 456   XBT_DEBUG("CLOSE on disk '%s'",st->generic_resource.name);
 457   surf_model_t model = st->generic_resource.model;
 458   return model->extension.storage.close(st, fd);
 459 }
 460
 461 static surf_action_t ws_action_read(void *workstation, void* ptr, size_t size,
 462                                     surf_file_t fd)
 463 {
 464   storage_t st = find_storage_on_mount_list(workstation, fd->storage);
 465   XBT_DEBUG("READ on disk '%s'",st->generic_resource.name);
 466   surf_model_t model = st->generic_resource.model;
 467   return model->extension.storage.read(st, ptr, size, fd);
 468 }
 469
 470 static surf_action_t ws_action_write(void *workstation, const void* ptr,
 471                                      size_t size, surf_file_t fd)
 472 {
 473   storage_t st = find_storage_on_mount_list(workstation, fd->storage);
 474   XBT_DEBUG("WRITE on disk '%s'",st->generic_resource.name);
 475   surf_model_t model = st->generic_resource.model;
 476   return model->extension.storage.write(st,  ptr, size, fd);
 477 }
 478
 479 static int ws_file_unlink(void *workstation, surf_file_t fd)
 480 {
 481   if (!fd){
 482     XBT_WARN("No such file descriptor. Impossible to unlink");
 483     return 0;
 484   } else {
 485 //    XBT_INFO("%s %zu", fd->storage, fd->size);
 486     storage_t st = find_storage_on_mount_list(workstation, fd->storage);
 487     xbt_dict_t content_dict = (st)->content;
 488     /* Check if the file is on this storage */
 489     if (!xbt_dict_get_or_null(content_dict, fd->name)){
 490       XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
 491           st->generic_resource.name);
 492       return 0;
 493     } else {
 494       XBT_DEBUG("UNLINK on disk '%s'",st->generic_resource.name);
 495       st->used_size -= fd->size;
 496
 497       // Remove the file from storage
 498       xbt_dict_remove(content_dict,fd->name);
 499
 500       free(fd->name);
 501       free(fd->storage);
 502       xbt_free(fd);
 503       return 1;
 504     }
 505   }
 506 }
 507
 508 static surf_action_t ws_action_ls(void *workstation, const char* mount,
 509                                   const char *path)
 510 {
 511   XBT_DEBUG("LS on mount '%s' and file '%s'",mount, path);
 512   storage_t st = find_storage_on_mount_list(workstation, mount);
 513   surf_model_t model = st->generic_resource.model;
 514   return model->extension.storage.ls(st, path);
 515 }
 516
 517 static size_t ws_file_get_size(void *workstation, surf_file_t fd)
 518 {
 519   return fd->size;
 520 }
 521
 522 void ws_get_params(void *ws, ws_params_t params)
 523 {
 524   workstation_CLM03_t ws_clm03 = surf_workstation_resource_priv(ws);
 525   memcpy(params, &ws_clm03->params, sizeof(s_ws_params_t));
 526 }
 527
 528 void ws_set_params(void *ws, ws_params_t params)
 529 {
 530   workstation_CLM03_t ws_clm03 = surf_workstation_resource_priv(ws);
 531   /* may check something here. */
 532   memcpy(&ws_clm03->params, params, sizeof(s_ws_params_t));
 533 }
 534
 535 static xbt_dynar_t ws_get_vms(void *pm)
 536 {
 537   xbt_dynar_t dyn = xbt_dynar_new(sizeof(smx_host_t), NULL);
 538
 539   /* iterate for all hosts including virtual machines */
 540   xbt_lib_cursor_t cursor;
 541   char *key;
 542   void **ind_host;
 543   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 544     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 545     if (!ws_clm03)
 546       continue;
 547     /* skip if it is not a virtual machine */
 548     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 549       continue;
 550
 551     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 552     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 553     if (pm == ws_vm2013->sub_ws)
 554       xbt_dynar_push(dyn, &ws_vm2013->sub_ws);
 555   }
 556
 557   return dyn;
 558 }
 559
 560
 561 static void surf_workstation_model_init_internal(void)
 562 {
 563   surf_model_t model = surf_model_init();
 564
 565   model->name = "Workstation";
 566   model->type = SURF_MODEL_TYPE_WORKSTATION;
 567   model->action_unref     = ws_action_unref;
 568   model->action_cancel    = ws_action_cancel;
 569   model->action_state_set = ws_action_state_set;
 570
 571   model->model_private->resource_used         = ws_resource_used;
 572   model->model_private->share_resources       = ws_share_resources;
 573   model->model_private->update_actions_state  = ws_update_actions_state;
 574   model->model_private->update_resource_state = ws_update_resource_state;
 575   model->model_private->finalize              = ws_finalize;
 576
 577   model->suspend          = ws_action_suspend;
 578   model->resume           = ws_action_resume;
 579   model->is_suspended     = ws_action_is_suspended;
 580   model->set_max_duration = ws_action_set_max_duration;
 581   model->set_priority     = ws_action_set_priority;
 582   model->set_bound        = ws_action_set_bound;
 583   #ifdef HAVE_TRACING
 584   model->set_category     = ws_action_set_category;
 585   #endif
 586   model->get_remains      = ws_action_get_remains;
 587   #ifdef HAVE_LATENCY_BOUND_TRACKING
 588   model->get_latency_limited = ws_get_latency_limited;
 589   #endif
 590
 591   /* For VM support, we have a surf cpu model object for each workstation model
 592    * object. The physical workstation model object has the cpu model object of
 593    * the physical machine layer. */
 594   xbt_assert(surf_cpu_model_pm);
 595   model->extension.workstation.cpu_model = surf_cpu_model_pm;
 596
 597   model->extension.workstation.execute   = ws_execute;
 598   model->extension.workstation.sleep     = ws_action_sleep;
 599   model->extension.workstation.get_state = ws_get_state;
 600   model->extension.workstation.set_state = ws_set_state;
 601   model->extension.workstation.get_core  = ws_get_core;
 602   model->extension.workstation.get_speed = ws_get_speed;
 603   model->extension.workstation.get_available_speed =
 604       ws_get_available_speed;
 605
 606   model->extension.workstation.communicate           = ws_communicate;
 607   model->extension.workstation.get_route             = ws_get_route;
 608   model->extension.workstation.execute_parallel_task = ws_execute_parallel_task;
 609   model->extension.workstation.get_link_bandwidth    = ws_get_link_bandwidth;
 610   model->extension.workstation.get_link_latency      = ws_get_link_latency;
 611   model->extension.workstation.link_shared           = ws_link_shared;
 612   model->extension.workstation.get_properties        = ws_get_properties;
 613
 614   model->extension.workstation.open   = ws_action_open;
 615   model->extension.workstation.close  = ws_action_close;
 616   model->extension.workstation.read   = ws_action_read;
 617   model->extension.workstation.write  = ws_action_write;
 618   model->extension.workstation.unlink = ws_file_unlink;
 619   model->extension.workstation.ls     = ws_action_ls;
 620
 621   model->extension.workstation.get_params = ws_get_params;
 622   model->extension.workstation.set_params = ws_set_params;
 623   model->extension.workstation.get_vms    = ws_get_vms;
 624
 625   surf_workstation_model = model;
 626 }
 627
 628 void surf_workstation_model_init_current_default(void)
 629 {
 630   xbt_cfg_setdefault_boolean(_sg_cfg_set, "network/crosstraffic", xbt_strdup("yes"));
 631   surf_cpu_model_init_Cas01();
 632   surf_network_model_init_LegrandVelho();
 633
 634   /* surf_cpu_mode_pm and surf_network_model must be initialized in advance. */
 635   xbt_assert(surf_cpu_model_pm);
 636   xbt_assert(surf_network_model);
 637   surf_workstation_model_init_internal();
 638
 639   xbt_dynar_push(model_list, &surf_workstation_model);
 640   xbt_dynar_push(model_list_invoke, &surf_workstation_model);
 641   sg_platf_host_add_cb(workstation_new);
 642 }
 643
 644 void surf_workstation_model_init_compound()
 645 {
 646   xbt_assert(surf_cpu_model_pm, "No CPU model defined yet!");
 647   xbt_assert(surf_network_model, "No network model defined yet!");
 648
 649   surf_workstation_model_init_internal();
 650   xbt_dynar_push(model_list, &surf_workstation_model);
 651   xbt_dynar_push(model_list_invoke, &surf_workstation_model);
 652   sg_platf_host_add_cb(workstation_new);
 653 }