src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2018. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include "simgrid/kernel/routing/ClusterZone.hpp"
   7 #include "simgrid/kernel/routing/DijkstraZone.hpp"
   8 #include "simgrid/kernel/routing/DragonflyZone.hpp"
   9 #include "simgrid/kernel/routing/EmptyZone.hpp"
  10 #include "simgrid/kernel/routing/FatTreeZone.hpp"
  11 #include "simgrid/kernel/routing/FloydZone.hpp"
  12 #include "simgrid/kernel/routing/FullZone.hpp"
  13 #include "simgrid/kernel/routing/NetPoint.hpp"
  14 #include "simgrid/kernel/routing/NetZoneImpl.hpp"
  15 #include "simgrid/kernel/routing/TorusZone.hpp"
  16 #include "simgrid/kernel/routing/VivaldiZone.hpp"
  17 #include "simgrid/s4u/Engine.hpp"
  18 #include "simgrid/s4u/Storage.hpp"
  19 #include "src/include/simgrid/sg_config.hpp"
  20 #include "src/kernel/EngineImpl.hpp"
  21 #include "src/simix/smx_private.hpp"
  22 #include "src/surf/HostImpl.hpp"
  23 #include "src/surf/cpu_interface.hpp"
  24 #include "src/surf/network_interface.hpp"
  25 #include "src/surf/xml/platf_private.hpp"
  26
  27 #include <string>
  28
  29 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  30
  31 XBT_PRIVATE std::map<std::string, simgrid::surf::StorageImpl*> mount_list;
  32 XBT_PRIVATE std::vector<std::string> known_storages;
  33
  34 namespace simgrid {
  35 namespace surf {
  36
  37 simgrid::xbt::signal<void(kernel::routing::ClusterCreationArgs*)> on_cluster;
  38 }
  39 }
  40
  41 static int surf_parse_models_setup_already_called = 0;
  42 std::map<std::string, simgrid::surf::StorageType*> storage_types;
  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 { /* Do nothing: just for symmetry of user code */
  54 }
  55
  56 /** Module management function: frees all internal data structures */
  57 void sg_platf_exit() {
  58   simgrid::surf::on_cluster.disconnectSlots();
  59   simgrid::s4u::onPlatformCreated.disconnectSlots();
  60
  61   /* make sure that we will reinit the models while loading the platf once reinited */
  62   surf_parse_models_setup_already_called = 0;
  63   surf_parse_lex_destroy();
  64 }
  65
  66 /** @brief Add an host to the current AS */
  67 void sg_platf_new_host(simgrid::kernel::routing::HostCreationArgs* args)
  68 {
  69   std::map<std::string, std::string> props;
  70   if (args->properties) {
  71     for (auto const& elm : *args->properties)
  72       props.insert({elm.first, elm.second});
  73     delete args->properties;
  74   }
  75
  76   simgrid::s4u::Host* host =
  77       routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount, &props);
  78
  79   host->pimpl_->storage_ = mount_list;
  80   mount_list.clear();
  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->set_speed_trace(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_netpoint, args->coord);
  91 }
  92
  93 /** @brief Add a "router" to the network element list */
  94 simgrid::kernel::routing::NetPoint* sg_platf_new_router(std::string name, const char* coords)
  95 {
  96   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
  97
  98   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
  99     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 100   xbt_assert(nullptr == simgrid::s4u::Engine::getInstance()->getNetpointByNameOrNull(name),
 101              "Refusing to create a router named '%s': this name already describes a node.", name.c_str());
 102
 103   simgrid::kernel::routing::NetPoint* netpoint =
 104       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
 105   XBT_DEBUG("Router '%s' has the id %u", name.c_str(), netpoint->id());
 106
 107   if (coords && strcmp(coords, ""))
 108     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 109
 110
 111   return netpoint;
 112 }
 113
 114 void sg_platf_new_link(simgrid::kernel::routing::LinkCreationArgs* link)
 115 {
 116   std::vector<std::string> names;
 117
 118   if (link->policy == SURF_LINK_SPLITDUPLEX) {
 119     names.push_back(link->id+ "_UP");
 120     names.push_back(link->id+ "_DOWN");
 121   } else {
 122     names.push_back(link->id);
 123   }
 124   for (auto const& link_name : names) {
 125     simgrid::surf::LinkImpl* l =
 126         surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
 127
 128     if (link->properties) {
 129       for (auto const& elm : *link->properties)
 130         l->setProperty(elm.first, elm.second);
 131     }
 132
 133     if (link->latency_trace)
 134       l->setLatencyTrace(link->latency_trace);
 135     if (link->bandwidth_trace)
 136       l->setBandwidthTrace(link->bandwidth_trace);
 137     if (link->state_trace)
 138       l->setStateTrace(link->state_trace);
 139   }
 140   delete link->properties;
 141 }
 142
 143 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 144 {
 145   using simgrid::kernel::routing::ClusterZone;
 146   using simgrid::kernel::routing::DragonflyZone;
 147   using simgrid::kernel::routing::FatTreeZone;
 148   using simgrid::kernel::routing::TorusZone;
 149
 150   int rankId=0;
 151
 152   // What an inventive way of initializing the AS that I have as ancestor :-(
 153   simgrid::kernel::routing::ZoneCreationArgs zone;
 154   zone.id = cluster->id;
 155   switch (cluster->topology) {
 156     case simgrid::kernel::routing::ClusterTopology::TORUS:
 157       zone.routing = A_surfxml_AS_routing_ClusterTorus;
 158       break;
 159     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 160       zone.routing = A_surfxml_AS_routing_ClusterDragonfly;
 161       break;
 162     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 163       zone.routing = A_surfxml_AS_routing_ClusterFatTree;
 164       break;
 165     default:
 166       zone.routing = A_surfxml_AS_routing_Cluster;
 167       break;
 168   }
 169   sg_platf_new_Zone_begin(&zone);
 170   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 171   current_as->parse_specific_arguments(cluster);
 172
 173   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 174     current_as->num_links_per_node_++;
 175     current_as->has_loopback_ = true;
 176   }
 177
 178   if(cluster->limiter_link > 0){
 179     current_as->num_links_per_node_++;
 180     current_as->has_limiter_ = true;
 181   }
 182
 183   for (int const& i : *cluster->radicals) {
 184     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 185     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 186
 187     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id.c_str(), cluster->speeds.front());
 188
 189     simgrid::kernel::routing::HostCreationArgs host;
 190     host.id = host_id.c_str();
 191     if ((cluster->properties != nullptr) && (not cluster->properties->empty())) {
 192       host.properties = new std::map<std::string, std::string>;
 193
 194       for (auto const& elm : *cluster->properties)
 195         host.properties->insert({elm.first, elm.second});
 196     }
 197
 198     host.speed_per_pstate = cluster->speeds;
 199     host.pstate = 0;
 200     host.core_amount = cluster->core_amount;
 201     host.coord = "";
 202     sg_platf_new_host(&host);
 203     XBT_DEBUG("</host>");
 204
 205     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 206
 207     // All links are saved in a matrix;
 208     // every row describes a single node; every node may have multiple links.
 209     // the first column may store a link from x to x if p_has_loopback is set
 210     // the second column may store a limiter link if p_has_limiter is set
 211     // other columns are to store one or more link for the node
 212
 213     //add a loopback link
 214     simgrid::surf::LinkImpl* linkUp   = nullptr;
 215     simgrid::surf::LinkImpl* linkDown = nullptr;
 216     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 217       std::string tmp_link = link_id + "_loopback";
 218       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
 219
 220       simgrid::kernel::routing::LinkCreationArgs link;
 221       link.id        = tmp_link;
 222       link.bandwidth = cluster->loopback_bw;
 223       link.latency   = cluster->loopback_lat;
 224       link.policy    = SURF_LINK_FATPIPE;
 225       sg_platf_new_link(&link);
 226       linkUp   = simgrid::surf::LinkImpl::byName(tmp_link);
 227       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 228
 229       auto* as_cluster = static_cast<ClusterZone*>(current_as);
 230       as_cluster->private_links_.insert({as_cluster->nodePosition(rankId), {linkUp, linkDown}});
 231     }
 232
 233     //add a limiter link (shared link to account for maximal bandwidth of the node)
 234     linkUp   = nullptr;
 235     linkDown = nullptr;
 236     if(cluster->limiter_link > 0){
 237       std::string tmp_link = std::string(link_id) + "_limiter";
 238       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
 239
 240       simgrid::kernel::routing::LinkCreationArgs link;
 241       link.id        = tmp_link;
 242       link.bandwidth = cluster->limiter_link;
 243       link.latency = 0;
 244       link.policy = SURF_LINK_SHARED;
 245       sg_platf_new_link(&link);
 246       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 247       linkUp   = linkDown;
 248       current_as->private_links_.insert({current_as->nodePositionWithLoopback(rankId), {linkUp, linkDown}});
 249     }
 250
 251     //call the cluster function that adds the others links
 252     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
 253       static_cast<FatTreeZone*>(current_as)->add_processing_node(i);
 254     } else {
 255       current_as->create_links_for_node(cluster, i, rankId, current_as->nodePositionWithLimiter(rankId));
 256     }
 257     rankId++;
 258   }
 259   delete cluster->properties;
 260
 261   // Add a router.
 262   XBT_DEBUG(" ");
 263   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 264   if (cluster->router_id.empty()) {
 265     std::string newid   = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 266     current_as->router_ = sg_platf_new_router(newid, NULL);
 267   } else {
 268     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 269   }
 270
 271   //Make the backbone
 272   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 273
 274     simgrid::kernel::routing::LinkCreationArgs link;
 275     link.id        = std::string(cluster->id)+ "_backbone";
 276     link.bandwidth = cluster->bb_bw;
 277     link.latency   = cluster->bb_lat;
 278     link.policy    = cluster->bb_sharing_policy;
 279
 280     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 281     sg_platf_new_link(&link);
 282
 283     routing_cluster_add_backbone(simgrid::surf::LinkImpl::byName(link.id));
 284   }
 285
 286   XBT_DEBUG("</AS>");
 287   sg_platf_new_Zone_seal();
 288
 289   simgrid::surf::on_cluster(cluster);
 290   delete cluster->radicals;
 291 }
 292
 293 void routing_cluster_add_backbone(simgrid::surf::LinkImpl* bb)
 294 {
 295   simgrid::kernel::routing::ClusterZone* cluster =
 296       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 297
 298   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 299   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->getCname());
 300
 301   cluster->backbone_ = bb;
 302   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->getCname());
 303 }
 304
 305 void sg_platf_new_cabinet(simgrid::kernel::routing::CabinetCreationArgs* cabinet)
 306 {
 307   for (int const& radical : *cabinet->radicals) {
 308     std::string hostname = cabinet->prefix + std::to_string(radical) + cabinet->suffix;
 309     simgrid::kernel::routing::HostCreationArgs host;
 310     host.pstate           = 0;
 311     host.core_amount      = 1;
 312     host.id               = hostname.c_str();
 313     host.speed_per_pstate.push_back(cabinet->speed);
 314     sg_platf_new_host(&host);
 315
 316     simgrid::kernel::routing::LinkCreationArgs link;
 317     link.policy    = SURF_LINK_SPLITDUPLEX;
 318     link.latency   = cabinet->lat;
 319     link.bandwidth = cabinet->bw;
 320     link.id        = "link_" + hostname;
 321     sg_platf_new_link(&link);
 322
 323     simgrid::kernel::routing::HostLinkCreationArgs host_link;
 324     host_link.id        = hostname;
 325     host_link.link_up   = std::string("link_") + hostname + "_UP";
 326     host_link.link_down = std::string("link_") + hostname + "_DOWN";
 327     sg_platf_new_hostlink(&host_link);
 328   }
 329   delete cabinet->radicals;
 330 }
 331
 332 void sg_platf_new_storage(simgrid::kernel::routing::StorageCreationArgs* storage)
 333 {
 334   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
 335              "Refusing to add a second storage named \"%s\"", storage->id.c_str());
 336
 337   simgrid::surf::StorageType* stype;
 338   auto st = storage_types.find(storage->type_id);
 339   if (st != storage_types.end()) {
 340     stype = st->second;
 341   } else {
 342     xbt_die("No storage type '%s'", storage->type_id.c_str());
 343   }
 344
 345   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id.c_str(),
 346             storage->type_id.c_str(), storage->content.c_str());
 347
 348   known_storages.push_back(storage->id);
 349
 350   // if storage content is not specified use the content of storage_type if any
 351   if (storage->content.empty() && not stype->content.empty()) {
 352     storage->content = stype->content;
 353     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id.c_str(),
 354               stype->id.c_str());
 355   }
 356
 357   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 358             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
 359             "\n\t\tproperties '%p''\n",
 360             storage->id.c_str(), stype->model.c_str(), stype->id.c_str(), storage->content.c_str(),
 361             storage->properties);
 362
 363   auto s = surf_storage_model->createStorage(storage->id, stype->id, storage->content, storage->attach);
 364
 365   if (storage->properties) {
 366     for (auto const& elm : *storage->properties)
 367       s->setProperty(elm.first, elm.second);
 368     delete storage->properties;
 369   }
 370 }
 371
 372 void sg_platf_new_storage_type(simgrid::kernel::routing::StorageTypeCreationArgs* storage_type)
 373 {
 374   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
 375              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id.c_str());
 376
 377   simgrid::surf::StorageType* stype =
 378       new simgrid::surf::StorageType(storage_type->id, storage_type->model, storage_type->content,
 379                                      storage_type->properties, storage_type->model_properties, storage_type->size);
 380
 381   XBT_DEBUG("Create a storage type id '%s' with model '%s', content '%s'", storage_type->id.c_str(),
 382             storage_type->model.c_str(), storage_type->content.c_str());
 383
 384   storage_types[storage_type->id] = stype;
 385 }
 386
 387 void sg_platf_new_mount(simgrid::kernel::routing::MountCreationArgs* mount)
 388 {
 389   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
 390              "Cannot mount non-existent disk \"%s\"", mount->storageId.c_str());
 391
 392   XBT_DEBUG("Mount '%s' on '%s'", mount->storageId.c_str(), mount->name.c_str());
 393
 394   if (mount_list.empty())
 395     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
 396   mount_list.insert({mount->name, simgrid::s4u::Engine::getInstance()->storageByName(mount->storageId)->getImpl()});
 397 }
 398
 399 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 400 {
 401   routing_get_current()->addRoute(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 402                                   route->symmetrical);
 403 }
 404
 405 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
 406 {
 407   routing_get_current()->addBypassRoute(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
 408                                         bypassRoute->link_list, bypassRoute->symmetrical);
 409 }
 410
 411 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 412 {
 413   sg_host_t host = sg_host_by_name(actor->host);
 414   if (not host) {
 415     // The requested host does not exist. Do a nice message to the user
 416     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 417                       "' does not exist\nExisting hosts: '";
 418
 419     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::getInstance()->getAllHosts();
 420
 421     for (auto const& host : list) {
 422       msg += host->getName();
 423       msg += "', '";
 424       if (msg.length() > 1024) {
 425         msg.pop_back(); // remove trailing quote
 426         msg += "...(list truncated)......";
 427         break;
 428       }
 429     }
 430     xbt_die("%s", msg.c_str());
 431   }
 432   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(actor->function);
 433   xbt_assert(factory, "Function '%s' unknown", actor->function);
 434
 435   double start_time = actor->start_time;
 436   double kill_time  = actor->kill_time;
 437   bool auto_restart = actor->on_failure != simgrid::kernel::routing::ActorOnFailure::DIE;
 438
 439   std::string actor_name     = actor->args[0];
 440   std::function<void()> code = factory(std::move(actor->args));
 441   std::shared_ptr<std::map<std::string, std::string>> properties(actor->properties);
 442
 443   simgrid::kernel::actor::ProcessArg* arg =
 444       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 445
 446   host->extension<simgrid::simix::Host>()->boot_processes.push_back(arg);
 447
 448   if (start_time > SIMIX_get_clock()) {
 449
 450     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 451
 452     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->getCname(), start_time);
 453     SIMIX_timer_set(start_time, [arg, auto_restart]() {
 454       smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(arg->code), arg->data,
 455                                                                 arg->host, arg->properties.get(), nullptr);
 456       if (arg->kill_time >= 0)
 457         simcall_process_set_kill_time(actor, arg->kill_time);
 458       if (auto_restart)
 459         SIMIX_process_auto_restart_set(actor, auto_restart);
 460       delete arg;
 461     });
 462   } else {                      // start_time <= SIMIX_get_clock()
 463     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->getCname());
 464
 465     smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(code), nullptr, host,
 466                                                               arg->properties.get(), nullptr);
 467
 468     /* The actor creation will fail if the host is currently dead, but that's fine */
 469     if (actor != nullptr) {
 470       if (arg->kill_time >= 0)
 471         simcall_process_set_kill_time(actor, arg->kill_time);
 472       if (auto_restart)
 473         SIMIX_process_auto_restart_set(actor, auto_restart);
 474     }
 475   }
 476 }
 477
 478 void sg_platf_new_peer(simgrid::kernel::routing::PeerCreationArgs* peer)
 479 {
 480   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 481   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 482
 483   std::vector<double> speedPerPstate;
 484   speedPerPstate.push_back(peer->speed);
 485   simgrid::s4u::Host* host = as->createHost(peer->id.c_str(), &speedPerPstate, 1, nullptr);
 486
 487   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
 488
 489   /* Change from the defaults */
 490   if (peer->state_trace)
 491     host->pimpl_cpu->setStateTrace(peer->state_trace);
 492   if (peer->speed_trace)
 493     host->pimpl_cpu->set_speed_trace(peer->speed_trace);
 494 }
 495
 496 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 497
 498 void sg_platf_end() {
 499   simgrid::s4u::onPlatformCreated();
 500 }
 501
 502 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 503 static void surf_config_models_setup()
 504 {
 505   std::string host_model_name    = xbt_cfg_get_string("host/model");
 506   std::string network_model_name = xbt_cfg_get_string("network/model");
 507   std::string cpu_model_name     = xbt_cfg_get_string("cpu/model");
 508   std::string storage_model_name = xbt_cfg_get_string("storage/model");
 509
 510   /* The compound host model is needed when using non-default net/cpu models */
 511   if ((not xbt_cfg_is_default_value("network/model") || not xbt_cfg_is_default_value("cpu/model")) &&
 512       xbt_cfg_is_default_value("host/model")) {
 513     host_model_name = "compound";
 514     xbt_cfg_set_string("host/model", host_model_name.c_str());
 515   }
 516
 517   XBT_DEBUG("host model: %s", host_model_name.c_str());
 518   if (host_model_name == "compound") {
 519     xbt_assert(not cpu_model_name.empty(), "Set a cpu model to use with the 'compound' host model");
 520     xbt_assert(not network_model_name.empty(), "Set a network model to use with the 'compound' host model");
 521
 522     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 523     surf_cpu_model_description[cpu_id].model_init_preparse();
 524
 525     int network_id = find_model_description(surf_network_model_description, network_model_name);
 526     surf_network_model_description[network_id].model_init_preparse();
 527   }
 528
 529   XBT_DEBUG("Call host_model_init");
 530   int host_id = find_model_description(surf_host_model_description, host_model_name);
 531   surf_host_model_description[host_id].model_init_preparse();
 532
 533   XBT_DEBUG("Call vm_model_init");
 534   surf_vm_model_init_HL13();
 535
 536   XBT_DEBUG("Call storage_model_init");
 537   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 538   surf_storage_model_description[storage_id].model_init_preparse();
 539 }
 540
 541 /**
 542  * \brief Add a Zone to the platform
 543  *
 544  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 545  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
 546  *
 547  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 548  *
 549  * @param zone the parameters defining the Zone to build.
 550  */
 551 simgrid::s4u::NetZone* sg_platf_new_Zone_begin(simgrid::kernel::routing::ZoneCreationArgs* zone)
 552 {
 553   if (not surf_parse_models_setup_already_called) {
 554     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 555      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 556      *
 557      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 558      * (FIXME: check it out by creating a file beginning with one of these tags)
 559      * but cluster and peer create ASes internally, so putting the code in there is ok.
 560      */
 561     surf_parse_models_setup_already_called = 1;
 562     surf_config_models_setup();
 563   }
 564
 565   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 566                             * any further config now that we created some real content */
 567
 568   /* search the routing model */
 569   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
 570   switch (zone->routing) {
 571     case A_surfxml_AS_routing_Cluster:
 572       new_zone = new simgrid::kernel::routing::ClusterZone(current_routing, zone->id);
 573       break;
 574     case A_surfxml_AS_routing_ClusterDragonfly:
 575       new_zone = new simgrid::kernel::routing::DragonflyZone(current_routing, zone->id);
 576       break;
 577     case A_surfxml_AS_routing_ClusterTorus:
 578       new_zone = new simgrid::kernel::routing::TorusZone(current_routing, zone->id);
 579       break;
 580     case A_surfxml_AS_routing_ClusterFatTree:
 581       new_zone = new simgrid::kernel::routing::FatTreeZone(current_routing, zone->id);
 582       break;
 583     case A_surfxml_AS_routing_Dijkstra:
 584       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, false);
 585       break;
 586     case A_surfxml_AS_routing_DijkstraCache:
 587       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, true);
 588       break;
 589     case A_surfxml_AS_routing_Floyd:
 590       new_zone = new simgrid::kernel::routing::FloydZone(current_routing, zone->id);
 591       break;
 592     case A_surfxml_AS_routing_Full:
 593       new_zone = new simgrid::kernel::routing::FullZone(current_routing, zone->id);
 594       break;
 595     case A_surfxml_AS_routing_None:
 596       new_zone = new simgrid::kernel::routing::EmptyZone(current_routing, zone->id);
 597       break;
 598     case A_surfxml_AS_routing_Vivaldi:
 599       new_zone = new simgrid::kernel::routing::VivaldiZone(current_routing, zone->id);
 600       break;
 601     default:
 602       xbt_die("Not a valid model!");
 603       break;
 604   }
 605
 606   if (current_routing == nullptr) { /* it is the first one */
 607     xbt_assert(simgrid::s4u::Engine::getInstance()->pimpl->netRoot_ == nullptr,
 608                "All defined components must belong to a networking zone.");
 609     simgrid::s4u::Engine::getInstance()->pimpl->netRoot_ = new_zone;
 610
 611   } else {
 612     /* set the father behavior */
 613     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 614       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 615     /* add to the sons dictionary */
 616     current_routing->getChildren()->push_back(static_cast<simgrid::s4u::NetZone*>(new_zone));
 617   }
 618
 619   /* set the new current component of the tree */
 620   current_routing = new_zone;
 621
 622   simgrid::s4u::NetZone::onCreation(*new_zone); // notify the signal
 623
 624   return new_zone;
 625 }
 626
 627 /**
 628  * \brief Specify that the description of the current AS is finished
 629  *
 630  * Once you've declared all the content of your AS, you have to seal
 631  * it with this call. Your AS is not usable until you call this function.
 632  */
 633 void sg_platf_new_Zone_seal()
 634 {
 635   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 636   current_routing->seal();
 637   simgrid::s4u::NetZone::onSeal(*current_routing);
 638   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->getFather());
 639 }
 640
 641 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 642 void sg_platf_new_hostlink(simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 643 {
 644   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id.c_str())->pimpl_netpoint;
 645   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 646   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 647              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 648
 649   simgrid::surf::LinkImpl* linkUp   = simgrid::surf::LinkImpl::byName(hostlink->link_up);
 650   simgrid::surf::LinkImpl* linkDown = simgrid::surf::LinkImpl::byName(hostlink->link_down);
 651
 652   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 653   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 654
 655   auto* as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 656
 657   if (as_cluster->private_links_.find(netpoint->id()) != as_cluster->private_links_.end())
 658     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
 659
 660   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->getCname(), netpoint->id());
 661   as_cluster->private_links_.insert({netpoint->id(), {linkUp, linkDown}});
 662 }
 663
 664 void sg_platf_new_trace(simgrid::kernel::routing::TraceCreationArgs* trace)
 665 {
 666   tmgr_trace_t tmgr_trace;
 667   if (not trace->file.empty()) {
 668     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 669   } else {
 670     xbt_assert(not trace->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 671                trace->id.c_str());
 672     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 673   }
 674   traces_set_list.insert({trace->id, tmgr_trace});
 675 }