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