src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2014. 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 "simgrid/s4u/engine.hpp"
   8 #include "src/kernel/EngineImpl.hpp"
   9 #include "src/simix/smx_private.h"
  10
  11 #include "src/include/simgrid/sg_config.h"
  12
  13 #include "src/surf/HostImpl.hpp"
  14 #include "src/surf/cpu_interface.hpp"
  15 #include "src/surf/network_interface.hpp"
  16
  17 #include "src/kernel/routing/ClusterZone.hpp"
  18 #include "src/kernel/routing/DijkstraZone.hpp"
  19 #include "src/kernel/routing/DragonflyZone.hpp"
  20 #include "src/kernel/routing/EmptyZone.hpp"
  21 #include "src/kernel/routing/FatTreeZone.hpp"
  22 #include "src/kernel/routing/FloydZone.hpp"
  23 #include "src/kernel/routing/FullZone.hpp"
  24 #include "src/kernel/routing/NetCard.hpp"
  25 #include "src/kernel/routing/NetZoneImpl.hpp"
  26 #include "src/kernel/routing/TorusZone.hpp"
  27 #include "src/kernel/routing/VivaldiZone.hpp"
  28
  29 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  30
  31 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
  32
  33 namespace simgrid {
  34 namespace surf {
  35
  36 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  37 simgrid::xbt::signal<void(void)> on_postparse;
  38
  39 }
  40 }
  41
  42 static int surf_parse_models_setup_already_called = 0;
  43
  44 /** The current AS in the parsing */
  45 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  46 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  47 {
  48   return current_routing;
  49 }
  50
  51 /** Module management function: creates all internal data structures */
  52 void sg_platf_init() {
  53 }
  54
  55 /** Module management function: frees all internal data structures */
  56 void sg_platf_exit() {
  57   simgrid::surf::on_cluster.disconnect_all_slots();
  58   simgrid::surf::on_postparse.disconnect_all_slots();
  59
  60   /* make sure that we will reinit the models while loading the platf once reinited */
  61   surf_parse_models_setup_already_called = 0;
  62   surf_parse_lex_destroy();
  63 }
  64
  65 /** @brief Add an host to the current AS */
  66 void sg_platf_new_host(sg_platf_host_cbarg_t args)
  67 {
  68   simgrid::s4u::Host* host = routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount);
  69
  70   new simgrid::surf::HostImpl(host, mount_list);
  71   xbt_lib_set(storage_lib, args->id, ROUTING_STORAGE_HOST_LEVEL, static_cast<void*>(mount_list));
  72   mount_list = nullptr;
  73
  74   if (args->properties) {
  75     xbt_dict_cursor_t cursor=nullptr;
  76     char *key,*data;
  77     xbt_dict_foreach (args->properties, cursor, key, data)
  78       host->setProperty(key, data);
  79     xbt_dict_free(&args->properties);
  80   }
  81
  82   /* Change from the defaults */
  83   if (args->state_trace)
  84     host->pimpl_cpu->setStateTrace(args->state_trace);
  85   if (args->speed_trace)
  86     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
  87   if (args->pstate != 0)
  88     host->pimpl_cpu->setPState(args->pstate);
  89   if (args->coord && strcmp(args->coord, ""))
  90     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netcard, args->coord);
  91
  92   simgrid::s4u::Host::onCreation(*host);
  93
  94   if (TRACE_is_enabled() && TRACE_needs_platform())
  95     sg_instr_new_host(*host);
  96 }
  97
  98 /** @brief Add a "router" to the network element list */
  99 simgrid::kernel::routing::NetCard* sg_platf_new_router(const char* name, const char* coords)
 100 {
 101   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
 102
 103   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 104     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 105   xbt_assert(nullptr == simgrid::s4u::Engine::instance()->netcardByNameOrNull(name),
 106              "Refusing to create a router named '%s': this name already describes a node.", name);
 107
 108   simgrid::kernel::routing::NetCard* netcard =
 109       new simgrid::kernel::routing::NetCard(name, simgrid::kernel::routing::NetCard::Type::Router, current_routing);
 110   XBT_DEBUG("Router '%s' has the id %d", name, netcard->id());
 111
 112   if (coords && strcmp(coords, ""))
 113     new simgrid::kernel::routing::vivaldi::Coords(netcard, coords);
 114
 115   if (TRACE_is_enabled() && TRACE_needs_platform())
 116     sg_instr_new_router(name, coords);
 117
 118   return netcard;
 119 }
 120
 121 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 122   std::vector<char*> names;
 123
 124   if (link->policy == SURF_LINK_FULLDUPLEX) {
 125     names.push_back(bprintf("%s_UP", link->id));
 126     names.push_back(bprintf("%s_DOWN", link->id));
 127   } else {
 128     names.push_back(xbt_strdup(link->id));
 129   }
 130   for (auto link_name : names) {
 131     Link* l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
 132
 133     if (link->properties) {
 134       xbt_dict_cursor_t cursor = nullptr;
 135       char *key, *data;
 136       xbt_dict_foreach (link->properties, cursor, key, data)
 137         l->setProperty(key, data);
 138       xbt_dict_free(&link->properties);
 139     }
 140
 141     if (link->latency_trace)
 142       l->setLatencyTrace(link->latency_trace);
 143     if (link->bandwidth_trace)
 144       l->setBandwidthTrace(link->bandwidth_trace);
 145     if (link->state_trace)
 146       l->setStateTrace(link->state_trace);
 147
 148     xbt_free(link_name);
 149   }
 150 }
 151
 152 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 153 {
 154   using simgrid::kernel::routing::ClusterZone;
 155   using simgrid::kernel::routing::DragonflyZone;
 156   using simgrid::kernel::routing::FatTreeZone;
 157   using simgrid::kernel::routing::TorusZone;
 158
 159   int rankId=0;
 160
 161   s_sg_platf_link_cbarg_t link;
 162
 163   // What an inventive way of initializing the AS that I have as ancestor :-(
 164   s_sg_platf_AS_cbarg_t AS;
 165   AS.id = cluster->id;
 166   switch (cluster->topology) {
 167   case SURF_CLUSTER_TORUS:
 168     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 169     break;
 170   case SURF_CLUSTER_DRAGONFLY:
 171     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 172     break;
 173   case SURF_CLUSTER_FAT_TREE:
 174     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 175     break;
 176   default:
 177     AS.routing = A_surfxml_AS_routing_Cluster;
 178     break;
 179   }
 180   sg_platf_new_AS_begin(&AS);
 181   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 182   current_as->parse_specific_arguments(cluster);
 183
 184   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 185     current_as->linkCountPerNode_++;
 186     current_as->hasLoopback_ = 1;
 187   }
 188
 189   if(cluster->limiter_link!=0){
 190     current_as->linkCountPerNode_++;
 191     current_as->hasLimiter_ = 1;
 192   }
 193
 194   for (int i : *cluster->radicals) {
 195     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 196     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 197
 198     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 199
 200     s_sg_platf_host_cbarg_t host;
 201     memset(&host, 0, sizeof(host));
 202     host.id = host_id;
 203     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 204       xbt_dict_cursor_t cursor=nullptr;
 205       char *key,*data;
 206       host.properties = xbt_dict_new_homogeneous(free);
 207
 208       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 209         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 210       }
 211     }
 212
 213     host.speed_per_pstate.push_back(cluster->speed);
 214     host.pstate = 0;
 215     host.core_amount = cluster->core_amount;
 216     host.coord = "";
 217     sg_platf_new_host(&host);
 218     XBT_DEBUG("</host>");
 219
 220     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 221
 222     // All links are saved in a matrix;
 223     // every row describes a single node; every node may have multiple links.
 224     // the first column may store a link from x to x if p_has_loopback is set
 225     // the second column may store a limiter link if p_has_limiter is set
 226     // other columns are to store one or more link for the node
 227
 228     //add a loopback link
 229     Link* linkUp   = nullptr;
 230     Link* linkDown = nullptr;
 231     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 232       char *tmp_link = bprintf("%s_loopback", link_id);
 233       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 234
 235       memset(&link, 0, sizeof(link));
 236       link.id        = tmp_link;
 237       link.bandwidth = cluster->loopback_bw;
 238       link.latency   = cluster->loopback_lat;
 239       link.policy    = SURF_LINK_FATPIPE;
 240       sg_platf_new_link(&link);
 241       linkUp   = Link::byName(tmp_link);
 242       linkDown = Link::byName(tmp_link);
 243       free(tmp_link);
 244
 245       auto as_cluster = static_cast<ClusterZone*>(current_as);
 246       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 247     }
 248
 249     //add a limiter link (shared link to account for maximal bandwidth of the node)
 250     linkUp   = nullptr;
 251     linkDown = nullptr;
 252     if(cluster->limiter_link!=0){
 253       char *tmp_link = bprintf("%s_limiter", link_id);
 254       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 255
 256       memset(&link, 0, sizeof(link));
 257       link.id = tmp_link;
 258       link.bandwidth = cluster->limiter_link;
 259       link.latency = 0;
 260       link.policy = SURF_LINK_SHARED;
 261       sg_platf_new_link(&link);
 262       linkUp = linkDown = Link::byName(tmp_link);
 263       free(tmp_link);
 264       current_as->privateLinks_.insert(
 265           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 266     }
 267
 268     //call the cluster function that adds the others links
 269     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 270       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 271     }
 272     else {
 273       current_as->create_links_for_node(cluster, i, rankId,
 274           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 275     }
 276     xbt_free(link_id);
 277     xbt_free(host_id);
 278     rankId++;
 279   }
 280
 281   // Add a router.
 282   XBT_DEBUG(" ");
 283   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 284   if (!cluster->router_id || !strcmp(cluster->router_id, "")) {
 285     char* newid         = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 286     current_as->router_ = sg_platf_new_router(newid, NULL);
 287     free(newid);
 288   } else {
 289     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 290   }
 291
 292   //Make the backbone
 293   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 294
 295     memset(&link, 0, sizeof(link));
 296     link.id        = bprintf("%s_backbone", cluster->id);
 297     link.bandwidth = cluster->bb_bw;
 298     link.latency   = cluster->bb_lat;
 299     link.policy    = cluster->bb_sharing_policy;
 300
 301     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 302     sg_platf_new_link(&link);
 303
 304     routing_cluster_add_backbone(Link::byName(link.id));
 305     free((char*)link.id);
 306   }
 307
 308   XBT_DEBUG("</AS>");
 309   sg_platf_new_AS_seal();
 310
 311   simgrid::surf::on_cluster(cluster);
 312   delete cluster->radicals;
 313 }
 314 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 315   simgrid::kernel::routing::ClusterZone* cluster =
 316       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 317
 318   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 319   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 320
 321   cluster->backbone_ = bb;
 322   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 323 }
 324
 325 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 326 {
 327   for (int radical : *cabinet->radicals) {
 328     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 329     s_sg_platf_host_cbarg_t host;
 330     memset(&host, 0, sizeof(host));
 331     host.pstate           = 0;
 332     host.core_amount      = 1;
 333     host.id               = hostname;
 334     host.speed_per_pstate.push_back(cabinet->speed);
 335     sg_platf_new_host(&host);
 336
 337     s_sg_platf_link_cbarg_t link;
 338     memset(&link, 0, sizeof(link));
 339     link.policy    = SURF_LINK_FULLDUPLEX;
 340     link.latency   = cabinet->lat;
 341     link.bandwidth = cabinet->bw;
 342     link.id        = bprintf("link_%s",hostname);
 343     sg_platf_new_link(&link);
 344     free((char*)link.id);
 345
 346     s_sg_platf_host_link_cbarg_t host_link;
 347     memset(&host_link, 0, sizeof(host_link));
 348     host_link.id        = hostname;
 349     host_link.link_up   = bprintf("link_%s_UP",hostname);
 350     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 351     sg_platf_new_hostlink(&host_link);
 352     free((char*)host_link.link_up);
 353     free((char*)host_link.link_down);
 354
 355     free(hostname);
 356   }
 357   delete cabinet->radicals;
 358 }
 359
 360 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 361 {
 362   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 363                "Refusing to add a second storage named \"%s\"", storage->id);
 364
 365   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 366   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 367
 368   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 369       storage->id,
 370       storage->type_id,
 371       storage->content);
 372
 373   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 374
 375   // if storage content is not specified use the content of storage_type if any
 376   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 377     storage->content = ((storage_type_t) stype)->content;
 378     storage->content_type = ((storage_type_t) stype)->content_type;
 379     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 380         storage->id,((storage_type_t) stype)->content_type,
 381         ((storage_type_t) stype)->type_id);
 382   }
 383
 384   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 385       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 386       "\n\t\tproperties '%p''\n",
 387       storage->id,
 388       ((storage_type_t) stype)->model,
 389       ((storage_type_t) stype)->type_id,
 390       storage->content,
 391       storage->content_type,
 392     storage->properties);
 393
 394   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
 395                                              storage->content_type, storage->attach);
 396
 397   if (storage->properties) {
 398     xbt_dict_cursor_t cursor = nullptr;
 399     char *key, *data;
 400     xbt_dict_foreach (storage->properties, cursor, key, data)
 401       s->setProperty(key, data);
 402     xbt_dict_free(&storage->properties);
 403   }
 404 }
 405 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 406
 407   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 408                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 409
 410   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 411   stype->model = xbt_strdup(storage_type->model);
 412   stype->properties = storage_type->properties;
 413   stype->content = xbt_strdup(storage_type->content);
 414   stype->content_type = xbt_strdup(storage_type->content_type);
 415   stype->type_id = xbt_strdup(storage_type->id);
 416   stype->size = storage_type->size;
 417   stype->model_properties = storage_type->model_properties;
 418
 419   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 420       "content '%s', and content_type '%s'",
 421       stype->type_id,
 422       stype->model,
 423       storage_type->content,
 424       storage_type->content_type);
 425
 426   xbt_lib_set(storage_type_lib,
 427       stype->type_id,
 428       ROUTING_STORAGE_TYPE_LEVEL,
 429       (void *) stype);
 430 }
 431
 432 static void mount_free(void *p)
 433 {
 434   mount_t mnt = (mount_t) p;
 435   xbt_free(mnt->name);
 436 }
 437
 438 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 439   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 440       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 441
 442   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 443
 444   s_mount_t mnt;
 445   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 446   mnt.name = xbt_strdup(mount->name);
 447
 448   if(!mount_list){
 449     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 450     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 451   }
 452   xbt_dynar_push(mount_list, &mnt);
 453 }
 454
 455 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 456 {
 457   routing_get_current()->addRoute(route);
 458 }
 459
 460 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 461 {
 462   routing_get_current()->addBypassRoute(bypassRoute);
 463 }
 464
 465 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 466 {
 467   sg_host_t host = sg_host_by_name(process->host);
 468   if (!host) {
 469     // The requested host does not exist. Do a nice message to the user
 470     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 471     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 472     free(tmp);
 473     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 474     simgrid::s4u::Host* host;
 475     unsigned int cursor;
 476     xbt_dynar_foreach(all_hosts,cursor, host) {
 477       xbt_strbuff_append(msg, host->cname());
 478       xbt_strbuff_append(msg,"', '");
 479       if (msg->used > 1024) {
 480         msg->data[msg->used-3]='\0';
 481         msg->used -= 3;
 482
 483         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 484         break;
 485       }
 486     }
 487     msg->data[msg->used-3]='\0';
 488     xbt_die("%s", msg->data);
 489   }
 490   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 491   xbt_assert(factory, "Function '%s' unknown", process->function);
 492
 493   double start_time = process->start_time;
 494   double kill_time  = process->kill_time;
 495   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 496
 497   std::vector<std::string> args(process->argv, process->argv + process->argc);
 498   std::function<void()> code = factory(std::move(args));
 499
 500   smx_process_arg_t arg = nullptr;
 501   smx_actor_t process_created = nullptr;
 502
 503   arg = new simgrid::simix::ProcessArg();
 504   arg->name = std::string(process->argv[0]);
 505   arg->code = code;
 506   arg->data = nullptr;
 507   arg->host = host;
 508   arg->kill_time = kill_time;
 509   arg->properties = current_property_set;
 510
 511   sg_host_simix(host)->boot_processes.push_back(arg);
 512
 513   if (start_time > SIMIX_get_clock()) {
 514
 515     arg = new simgrid::simix::ProcessArg();
 516     arg->name = std::string(process->argv[0]);
 517     arg->code = std::move(code);
 518     arg->data = nullptr;
 519     arg->host = host;
 520     arg->kill_time = kill_time;
 521     arg->properties = current_property_set;
 522
 523     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 524     SIMIX_timer_set(start_time, [=]() {
 525       simix_global->create_process_function(
 526                                             arg->name.c_str(),
 527                                             std::move(arg->code),
 528                                             arg->data,
 529                                             arg->host,
 530                                             arg->kill_time,
 531                                             arg->properties,
 532                                             arg->auto_restart,
 533                                             nullptr);
 534       delete arg;
 535     });
 536   } else {                      // start_time <= SIMIX_get_clock()
 537     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 538
 539     process_created = simix_global->create_process_function(
 540         arg->name.c_str(), std::move(code), nullptr,
 541         host, kill_time,
 542         current_property_set, auto_restart, nullptr);
 543
 544     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 545     if (!process_created) {
 546       return;
 547     }
 548   }
 549   current_property_set = nullptr;
 550 }
 551
 552 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 553 {
 554   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 555   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 556
 557   std::vector<double> speedPerPstate;
 558   speedPerPstate.push_back(peer->speed);
 559   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1);
 560
 561   as->setPeerLink(host->pimpl_netcard, peer->bw_in, peer->bw_out, peer->coord);
 562   simgrid::s4u::Host::onCreation(*host);
 563
 564   /* Change from the defaults */
 565   if (peer->state_trace)
 566     host->pimpl_cpu->setStateTrace(peer->state_trace);
 567   if (peer->speed_trace)
 568     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 569 }
 570
 571 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 572
 573 void sg_platf_end() {
 574   simgrid::surf::on_postparse();
 575 }
 576
 577 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 578 static void surf_config_models_setup()
 579 {
 580   const char* host_model_name    = xbt_cfg_get_string("host/model");
 581   const char* network_model_name = xbt_cfg_get_string("network/model");
 582   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 583   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 584
 585   /* The compound host model is needed when using non-default net/cpu models */
 586   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 587       xbt_cfg_is_default_value("host/model")) {
 588     host_model_name = "compound";
 589     xbt_cfg_set_string("host/model", host_model_name);
 590   }
 591
 592   XBT_DEBUG("host model: %s", host_model_name);
 593   if (!strcmp(host_model_name, "compound")) {
 594     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 595     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 596
 597     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 598     surf_cpu_model_description[cpu_id].model_init_preparse();
 599
 600     int network_id = find_model_description(surf_network_model_description, network_model_name);
 601     surf_network_model_description[network_id].model_init_preparse();
 602   }
 603
 604   XBT_DEBUG("Call host_model_init");
 605   int host_id = find_model_description(surf_host_model_description, host_model_name);
 606   surf_host_model_description[host_id].model_init_preparse();
 607
 608   XBT_DEBUG("Call vm_model_init");
 609   surf_vm_model_init_HL13();
 610
 611   XBT_DEBUG("Call storage_model_init");
 612   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 613   surf_storage_model_description[storage_id].model_init_preparse();
 614 }
 615
 616 /**
 617  * \brief Add an AS to the platform
 618  *
 619  * Add a new autonomous system to the platform. Any elements (such as host,
 620  * router or sub-AS) added after this call and before the corresponding call
 621  * to sg_platf_new_AS_seal() will be added to this AS.
 622  *
 623  * Once this function was called, the configuration concerning the used
 624  * models cannot be changed anymore.
 625  *
 626  * @param AS the parameters defining the AS to build.
 627  */
 628 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 629 {
 630   if (!surf_parse_models_setup_already_called) {
 631     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 632      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 633      *
 634      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 635      * (FIXME: check it out by creating a file beginning with one of these tags)
 636      * but cluster and peer create ASes internally, so putting the code in there is ok.
 637      */
 638     surf_parse_models_setup_already_called = 1;
 639     surf_config_models_setup();
 640   }
 641
 642   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 643                             * any further config now that we created some real content */
 644
 645
 646   /* search the routing model */
 647   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 648   switch(AS->routing){
 649     case A_surfxml_AS_routing_Cluster:
 650       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 651       break;
 652     case A_surfxml_AS_routing_ClusterDragonfly:
 653       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 654       break;
 655     case A_surfxml_AS_routing_ClusterTorus:
 656       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 657       break;
 658     case A_surfxml_AS_routing_ClusterFatTree:
 659       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 660       break;
 661     case A_surfxml_AS_routing_Dijkstra:
 662       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 663       break;
 664     case A_surfxml_AS_routing_DijkstraCache:
 665       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 666       break;
 667     case A_surfxml_AS_routing_Floyd:
 668       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 669       break;
 670     case A_surfxml_AS_routing_Full:
 671       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 672       break;
 673     case A_surfxml_AS_routing_None:
 674       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 675       break;
 676     case A_surfxml_AS_routing_Vivaldi:
 677       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 678       break;
 679     default:
 680       xbt_die("Not a valid model!");
 681       break;
 682   }
 683
 684   if (current_routing == nullptr) { /* it is the first one */
 685     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 686                "All defined components must belong to a AS");
 687     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 688
 689   } else {
 690     /* set the father behavior */
 691     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 692       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 693     /* add to the sons dictionary */
 694     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 695   }
 696
 697   /* set the new current component of the tree */
 698   current_routing = new_as;
 699
 700   if (TRACE_is_enabled())
 701     sg_instr_AS_begin(AS);
 702
 703   return new_as;
 704 }
 705
 706 /**
 707  * \brief Specify that the description of the current AS is finished
 708  *
 709  * Once you've declared all the content of your AS, you have to seal
 710  * it with this call. Your AS is not usable until you call this function.
 711  */
 712 void sg_platf_new_AS_seal()
 713 {
 714   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 715   current_routing->seal();
 716   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 717
 718   if (TRACE_is_enabled())
 719     sg_instr_AS_end();
 720 }
 721
 722 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 723 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 724 {
 725   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
 726   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
 727   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 728              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 729
 730   simgrid::surf::Link* linkUp   = Link::byName(hostlink->link_up);
 731   simgrid::surf::Link* linkDown = Link::byName(hostlink->link_down);
 732
 733   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 734   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 735
 736   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 737
 738   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
 739     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 740
 741   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->cname(), netcard->id());
 742   as_cluster->privateLinks_.insert({netcard->id(), {linkUp, linkDown}});
 743 }
 744
 745 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 746 {
 747   tmgr_trace_t tmgr_trace;
 748   if (trace->file && strcmp(trace->file, "") != 0) {
 749     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 750   } else {
 751     xbt_assert(strcmp(trace->pc_data, ""),
 752         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 753     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 754   }
 755   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 756 }