src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2021. 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/Exception.hpp"
   7 #include "simgrid/kernel/routing/ClusterZone.hpp"
   8 #include "simgrid/kernel/routing/DijkstraZone.hpp"
   9 #include "simgrid/kernel/routing/DragonflyZone.hpp"
  10 #include "simgrid/kernel/routing/EmptyZone.hpp"
  11 #include "simgrid/kernel/routing/FatTreeZone.hpp"
  12 #include "simgrid/kernel/routing/FloydZone.hpp"
  13 #include "simgrid/kernel/routing/FullZone.hpp"
  14 #include "simgrid/kernel/routing/NetPoint.hpp"
  15 #include "simgrid/kernel/routing/NetZoneImpl.hpp"
  16 #include "simgrid/kernel/routing/TorusZone.hpp"
  17 #include "simgrid/kernel/routing/VivaldiZone.hpp"
  18 #include "simgrid/kernel/routing/WifiZone.hpp"
  19 #include "simgrid/s4u/Engine.hpp"
  20 #include "src/include/simgrid/sg_config.hpp"
  21 #include "src/include/surf/surf.hpp"
  22 #include "src/kernel/EngineImpl.hpp"
  23 #include "src/kernel/resource/DiskImpl.hpp"
  24 #include "src/kernel/resource/profile/Profile.hpp"
  25 #include "src/simix/smx_private.hpp"
  26 #include "src/surf/HostImpl.hpp"
  27 #include "src/surf/xml/platf_private.hpp"
  28
  29 #include <string>
  30
  31 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  32
  33 namespace simgrid {
  34 namespace kernel {
  35 namespace routing {
  36 xbt::signal<void(ClusterCreationArgs const&)> on_cluster_creation;
  37 } // namespace routing
  38 } // namespace kernel
  39 } // namespace simgrid
  40
  41 static int surf_parse_models_setup_already_called = 0;
  42
  43 /** The current AS in the parsing */
  44 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  45 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  46 {
  47   return current_routing;
  48 }
  49
  50 /** Module management function: creates all internal data structures */
  51 void sg_platf_init()
  52 {
  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::kernel::routing::on_cluster_creation.disconnect_slots();
  59   simgrid::s4u::Engine::on_platform_created.disconnect_slots();
  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 a host to the current AS */
  67 void sg_platf_new_host(const simgrid::kernel::routing::HostCreationArgs* args)
  68 {
  69   simgrid::s4u::Host* host = routing_get_current()->create_host(args->id, args->speed_per_pstate, args->core_amount);
  70
  71   if (args->properties) {
  72     host->set_properties(*args->properties);
  73     delete args->properties;
  74   }
  75
  76   host->pimpl_->set_disks(args->disks, host);
  77
  78   /* Change from the defaults */
  79   if (args->state_trace)
  80     host->set_state_profile(args->state_trace);
  81   if (args->speed_trace)
  82     host->set_speed_profile(args->speed_trace);
  83   if (not args->coord.empty())
  84     new simgrid::kernel::routing::vivaldi::Coords(host->get_netpoint(), args->coord);
  85
  86   simgrid::s4u::Host::on_creation(*host); // notify the signal
  87
  88   /* When energy plugin is activated, changing the pstate requires to already have the HostEnergy extension whose
  89    * allocation is triggered by the on_creation signal. Then set_pstate must be called after the signal emition */
  90   if (args->pstate != 0)
  91     host->set_pstate(args->pstate);
  92 }
  93
  94 /** @brief Add a "router" to the network element list */
  95 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const char* coords)
  96 {
  97   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
  98     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
  99   xbt_assert(nullptr == simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(name),
 100              "Refusing to create a router named '%s': this name already describes a node.", name.c_str());
 101
 102   auto* netpoint =
 103       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
 104   XBT_DEBUG("Router '%s' has the id %u", netpoint->get_cname(), netpoint->id());
 105
 106   if (coords && strcmp(coords, ""))
 107     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 108
 109
 110   return netpoint;
 111 }
 112
 113 static void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* args, const std::string& link_name)
 114 {
 115   simgrid::s4u::Link* link = routing_get_current()->create_link(link_name, args->bandwidths, args->policy);
 116   if (args->policy != simgrid::s4u::Link::SharingPolicy::WIFI)
 117     link->get_impl()->set_latency(args->latency);
 118
 119   if (args->properties)
 120     link->set_properties(*args->properties);
 121
 122   simgrid::kernel::resource::LinkImpl* l = link->get_impl();
 123   if (args->latency_trace)
 124     l->set_latency_profile(args->latency_trace);
 125   if (args->bandwidth_trace)
 126     l->set_bandwidth_profile(args->bandwidth_trace);
 127   if (args->state_trace)
 128     l->set_state_profile(args->state_trace);
 129
 130   link->seal();
 131 }
 132
 133 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* link)
 134 {
 135   if (link->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 136     sg_platf_new_link(link, link->id + "_UP");
 137     sg_platf_new_link(link, link->id + "_DOWN");
 138   } else {
 139     sg_platf_new_link(link, link->id);
 140   }
 141   delete link->properties;
 142 }
 143
 144 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 145 {
 146   using simgrid::kernel::routing::ClusterZone;
 147   using simgrid::kernel::routing::DragonflyZone;
 148   using simgrid::kernel::routing::FatTreeZone;
 149   using simgrid::kernel::routing::TorusZone;
 150
 151   int rankId=0;
 152
 153   // What an inventive way of initializing the AS that I have as ancestor :-(
 154   simgrid::kernel::routing::ZoneCreationArgs zone;
 155   zone.id = cluster->id;
 156   switch (cluster->topology) {
 157     case simgrid::kernel::routing::ClusterTopology::TORUS:
 158       zone.routing = "ClusterTorus";
 159       break;
 160     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 161       zone.routing = "ClusterDragonfly";
 162       break;
 163     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 164       zone.routing = "ClusterFatTree";
 165       break;
 166     default:
 167       zone.routing = "Cluster";
 168       break;
 169   }
 170   sg_platf_new_Zone_begin(&zone);
 171   auto* current_as = static_cast<ClusterZone*>(routing_get_current());
 172   current_as->parse_specific_arguments(cluster);
 173   if (cluster->properties != nullptr)
 174     for (auto const& elm : *cluster->properties)
 175       current_as->get_iface()->set_property(elm.first, elm.second);
 176
 177   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 178     current_as->num_links_per_node_++;
 179     current_as->has_loopback_ = true;
 180   }
 181
 182   if(cluster->limiter_link > 0){
 183     current_as->num_links_per_node_++;
 184     current_as->has_limiter_ = true;
 185   }
 186
 187   for (int const& i : *cluster->radicals) {
 188     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 189     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 190
 191     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id.c_str(), cluster->speeds.front());
 192
 193     simgrid::kernel::routing::HostCreationArgs host;
 194     host.id = host_id;
 195     if ((cluster->properties != nullptr) && (not cluster->properties->empty())) {
 196       host.properties = new std::unordered_map<std::string, std::string>();
 197
 198       for (auto const& elm : *cluster->properties)
 199         host.properties->insert({elm.first, elm.second});
 200     }
 201
 202     host.speed_per_pstate = cluster->speeds;
 203     host.pstate = 0;
 204     host.core_amount = cluster->core_amount;
 205     host.coord = "";
 206     sg_platf_new_host(&host);
 207     XBT_DEBUG("</host>");
 208
 209     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 210
 211     // All links are saved in a matrix;
 212     // every row describes a single node; every node may have multiple links.
 213     // the first column may store a link from x to x if p_has_loopback is set
 214     // the second column may store a limiter link if p_has_limiter is set
 215     // other columns are to store one or more link for the node
 216
 217     //add a loopback link
 218     const simgrid::s4u::Link* linkUp   = nullptr;
 219     const simgrid::s4u::Link* linkDown = nullptr;
 220     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 221       std::string tmp_link = link_id + "_loopback";
 222       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
 223
 224       simgrid::kernel::routing::LinkCreationArgs link;
 225       link.id        = tmp_link;
 226       link.bandwidths.push_back(cluster->loopback_bw);
 227       link.latency   = cluster->loopback_lat;
 228       link.policy    = simgrid::s4u::Link::SharingPolicy::FATPIPE;
 229       sg_platf_new_link(&link);
 230       linkUp   = simgrid::s4u::Link::by_name_or_null(tmp_link);
 231       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 232
 233       ClusterZone* as_cluster = current_as;
 234       as_cluster->private_links_.insert({as_cluster->node_pos(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 235     }
 236
 237     //add a limiter link (shared link to account for maximal bandwidth of the node)
 238     linkUp   = nullptr;
 239     linkDown = nullptr;
 240     if(cluster->limiter_link > 0){
 241       std::string tmp_link = std::string(link_id) + "_limiter";
 242       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
 243
 244       simgrid::kernel::routing::LinkCreationArgs link;
 245       link.id        = tmp_link;
 246       link.bandwidths.push_back(cluster->limiter_link);
 247       link.latency = 0;
 248       link.policy    = simgrid::s4u::Link::SharingPolicy::SHARED;
 249       sg_platf_new_link(&link);
 250       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 251       linkUp   = linkDown;
 252       current_as->private_links_.insert(
 253           {current_as->node_pos_with_loopback(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 254     }
 255
 256     //call the cluster function that adds the others links
 257     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
 258       static_cast<FatTreeZone*>(current_as)->add_processing_node(i);
 259     } else {
 260       current_as->create_links_for_node(cluster, i, rankId, current_as->node_pos_with_loopback_limiter(rankId));
 261     }
 262     rankId++;
 263   }
 264   delete cluster->properties;
 265
 266   // Add a router.
 267   XBT_DEBUG(" ");
 268   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 269   if (cluster->router_id.empty())
 270     cluster->router_id = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 271   current_as->router_ = sg_platf_new_router(cluster->router_id, nullptr);
 272
 273   //Make the backbone
 274   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 275     simgrid::kernel::routing::LinkCreationArgs link;
 276     link.id        = std::string(cluster->id)+ "_backbone";
 277     link.bandwidths.push_back(cluster->bb_bw);
 278     link.latency   = cluster->bb_lat;
 279     link.policy    = cluster->bb_sharing_policy;
 280
 281     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 282     sg_platf_new_link(&link);
 283
 284     routing_cluster_add_backbone(simgrid::s4u::Link::by_name(link.id)->get_impl());
 285   }
 286
 287   XBT_DEBUG("</AS>");
 288   sg_platf_new_Zone_seal();
 289
 290   simgrid::kernel::routing::on_cluster_creation(*cluster);
 291   delete cluster->radicals;
 292 }
 293
 294 void routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl* bb)
 295 {
 296   auto* cluster = 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->get_cname());
 300
 301   cluster->backbone_ = bb;
 302   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->get_cname());
 303 }
 304
 305 void sg_platf_new_cabinet(const 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;
 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    = simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX;
 318     link.latency   = cabinet->lat;
 319     link.bandwidths.push_back(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 simgrid::kernel::resource::DiskImpl* sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
 333 {
 334   simgrid::kernel::resource::DiskImpl* pimpl = surf_disk_model->create_disk(disk->id, disk->read_bw, disk->write_bw);
 335
 336   if (disk->properties) {
 337     pimpl->set_properties(*disk->properties);
 338     delete disk->properties;
 339   }
 340
 341   pimpl->seal();
 342   simgrid::s4u::Disk::on_creation(*pimpl->get_iface());
 343   return pimpl;
 344 }
 345
 346 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 347 {
 348   routing_get_current()->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 349                                    route->symmetrical);
 350 }
 351
 352 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
 353 {
 354   routing_get_current()->add_bypass_route(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
 355                                           bypassRoute->link_list, bypassRoute->symmetrical);
 356 }
 357
 358 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 359 {
 360   sg_host_t host = sg_host_by_name(actor->host);
 361   if (not host) {
 362     // The requested host does not exist. Do a nice message to the user
 363     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 364                       "' does not exist\nExisting hosts: '";
 365
 366     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::get_instance()->get_all_hosts();
 367
 368     for (auto const& some_host : list) {
 369       msg += some_host->get_name();
 370       msg += "', '";
 371       if (msg.length() > 1024) {
 372         msg.pop_back(); // remove trailing quote
 373         msg += "...(list truncated)......";
 374         break;
 375       }
 376     }
 377     xbt_die("%s", msg.c_str());
 378   }
 379   const simgrid::kernel::actor::ActorCodeFactory& factory =
 380       simgrid::kernel::EngineImpl::get_instance()->get_function(actor->function);
 381   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 382
 383   double start_time = actor->start_time;
 384   double kill_time  = actor->kill_time;
 385   bool auto_restart = actor->restart_on_failure;
 386
 387   std::string actor_name     = actor->args[0];
 388   simgrid::kernel::actor::ActorCode code = factory(std::move(actor->args));
 389   std::shared_ptr<std::unordered_map<std::string, std::string>> properties(actor->properties);
 390
 391   auto* arg =
 392       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 393
 394   host->pimpl_->add_actor_at_boot(arg);
 395
 396   if (start_time > SIMIX_get_clock()) {
 397     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 398
 399     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 400     simgrid::simix::Timer::set(start_time, [arg, auto_restart]() {
 401       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(
 402           arg->name.c_str(), arg->code, arg->data, arg->host, arg->properties.get(), nullptr);
 403       if (arg->kill_time >= 0)
 404         new_actor->set_kill_time(arg->kill_time);
 405       if (auto_restart)
 406         new_actor->set_auto_restart(auto_restart);
 407       delete arg;
 408     });
 409   } else {                      // start_time <= SIMIX_get_clock()
 410     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->get_cname());
 411
 412     try {
 413       simgrid::kernel::actor::ActorImplPtr new_actor = nullptr;
 414       new_actor = simgrid::kernel::actor::ActorImpl::create(arg->name.c_str(), code, nullptr, host,
 415                                                             arg->properties.get(), nullptr);
 416       /* The actor creation will fail if the host is currently dead, but that's fine */
 417       if (arg->kill_time >= 0)
 418         new_actor->set_kill_time(arg->kill_time);
 419       if (auto_restart)
 420         new_actor->set_auto_restart(auto_restart);
 421     } catch (simgrid::HostFailureException const&) {
 422       XBT_WARN("Deployment includes some initially turned off Hosts ... nevermind.");
 423     }
 424   }
 425 }
 426
 427 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* peer)
 428 {
 429   auto* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 430   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 431
 432   std::vector<double> speed_per_pstate;
 433   speed_per_pstate.push_back(peer->speed);
 434   simgrid::s4u::Host* host = as->create_host(peer->id, speed_per_pstate, 1);
 435
 436   as->set_peer_link(host->get_netpoint(), peer->bw_in, peer->bw_out, peer->coord);
 437
 438   /* Change from the defaults */
 439   if (peer->state_trace)
 440     host->set_state_profile(peer->state_trace);
 441   if (peer->speed_trace)
 442     host->set_speed_profile(peer->speed_trace);
 443   simgrid::s4u::Host::on_creation(*host); // notify the signal
 444 }
 445
 446 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 447 static void surf_config_models_setup()
 448 {
 449   std::string host_model_name    = simgrid::config::get_value<std::string>("host/model");
 450   std::string network_model_name = simgrid::config::get_value<std::string>("network/model");
 451   std::string cpu_model_name     = simgrid::config::get_value<std::string>("cpu/model");
 452   std::string disk_model_name    = simgrid::config::get_value<std::string>("disk/model");
 453
 454   /* The compound host model is needed when using non-default net/cpu models */
 455   if ((not simgrid::config::is_default("network/model") || not simgrid::config::is_default("cpu/model")) &&
 456       simgrid::config::is_default("host/model")) {
 457     host_model_name = "compound";
 458     simgrid::config::set_value("host/model", host_model_name);
 459   }
 460
 461   XBT_DEBUG("host model: %s", host_model_name.c_str());
 462   if (host_model_name == "compound") {
 463     xbt_assert(not cpu_model_name.empty(), "Set a cpu model to use with the 'compound' host model");
 464     xbt_assert(not network_model_name.empty(), "Set a network model to use with the 'compound' host model");
 465
 466     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 467     surf_cpu_model_description[cpu_id].model_init_preparse();
 468
 469     int network_id = find_model_description(surf_network_model_description, network_model_name);
 470     surf_network_model_description[network_id].model_init_preparse();
 471   }
 472
 473   XBT_DEBUG("Call host_model_init");
 474   int host_id = find_model_description(surf_host_model_description, host_model_name);
 475   surf_host_model_description[host_id].model_init_preparse();
 476
 477   XBT_DEBUG("Call vm_model_init");
 478   surf_vm_model_init_HL13();
 479
 480   XBT_DEBUG("Call disk_model_init");
 481   int disk_id = find_model_description(surf_disk_model_description, disk_model_name);
 482   surf_disk_model_description[disk_id].model_init_preparse();
 483 }
 484
 485 /**
 486  * @brief Add a Zone to the platform
 487  *
 488  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 489  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
 490  *
 491  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 492  *
 493  * @param zone the parameters defining the Zone to build.
 494  */
 495 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_Zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 496 {
 497   if (not surf_parse_models_setup_already_called) {
 498     simgrid::s4u::Engine::on_platform_creation();
 499
 500     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 501      * That is, after the last <config> tag, if any, and before the first of cluster|peer|zone|trace|trace_connect
 502      *
 503      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 504      * (FIXME: check it out by creating a file beginning with one of these tags)
 505      * but cluster and peer come down to zone creations, so putting this verification here is correct.
 506      */
 507     surf_parse_models_setup_already_called = 1;
 508     surf_config_models_setup();
 509   }
 510
 511   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 512                             * any further config now that we created some real content */
 513
 514   /* search the routing model */
 515   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
 516   simgrid::kernel::resource::NetworkModel* netmodel =
 517       current_routing == nullptr ? surf_network_model : current_routing->network_model_;
 518   if (strcasecmp(zone->routing.c_str(), "Cluster") == 0) {
 519       new_zone = new simgrid::kernel::routing::ClusterZone(current_routing, zone->id, netmodel);
 520   } else if (strcasecmp(zone->routing.c_str(),"ClusterDragonfly") == 0) {
 521       new_zone = new simgrid::kernel::routing::DragonflyZone(current_routing, zone->id, netmodel);
 522   } else if (strcasecmp(zone->routing.c_str(),"ClusterTorus") == 0) {
 523       new_zone = new simgrid::kernel::routing::TorusZone(current_routing, zone->id, netmodel);
 524   } else if (strcasecmp(zone->routing.c_str(),"ClusterFatTree") == 0) {
 525       new_zone = new simgrid::kernel::routing::FatTreeZone(current_routing, zone->id, netmodel);
 526   } else if (strcasecmp(zone->routing.c_str(),"Dijkstra") == 0) {
 527       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, false);
 528   } else if (strcasecmp(zone->routing.c_str(),"DijkstraCache") == 0) {
 529       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, true);
 530   } else if (strcasecmp(zone->routing.c_str(),"Floyd") == 0) {
 531       new_zone = new simgrid::kernel::routing::FloydZone(current_routing, zone->id, netmodel);
 532   } else if (strcasecmp(zone->routing.c_str(),"Full") == 0) {
 533       new_zone = new simgrid::kernel::routing::FullZone(current_routing, zone->id, netmodel);
 534   } else if (strcasecmp(zone->routing.c_str(),"None") == 0) {
 535       new_zone = new simgrid::kernel::routing::EmptyZone(current_routing, zone->id, netmodel);
 536   } else if (strcasecmp(zone->routing.c_str(),"Vivaldi") == 0) {
 537       new_zone = new simgrid::kernel::routing::VivaldiZone(current_routing, zone->id, netmodel);
 538   } else if (strcasecmp(zone->routing.c_str(), "Wifi") == 0) {
 539     new_zone = new simgrid::kernel::routing::WifiZone(current_routing, zone->id, netmodel);
 540   } else {
 541     xbt_die("Not a valid model!");
 542   }
 543
 544   if (current_routing == nullptr) { /* it is the first one */
 545     simgrid::s4u::Engine::get_instance()->set_netzone_root(new_zone->get_iface());
 546   } else {
 547     /* set the father behavior */
 548     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 549       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 550     /* add to the sons dictionary */
 551     current_routing->get_children()->push_back(new_zone);
 552   }
 553
 554   /* set the new current component of the tree */
 555   current_routing = new_zone;
 556   simgrid::s4u::NetZone::on_creation(*new_zone->get_iface()); // notify the signal
 557
 558   return new_zone;
 559 }
 560
 561 void sg_platf_new_Zone_set_properties(const std::unordered_map<std::string, std::string>* props)
 562 {
 563   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
 564
 565   if (props)
 566     current_routing->set_properties(*props);
 567 }
 568
 569 /**
 570  * @brief Specify that the description of the current Zone is finished
 571  *
 572  * Once you've declared all the content of your Zone, you have to seal
 573  * it with this call. Your Zone is not usable until you call this function.
 574  */
 575 void sg_platf_new_Zone_seal()
 576 {
 577   xbt_assert(current_routing, "Cannot seal the current Zone: zone under construction");
 578   current_routing->seal();
 579   simgrid::s4u::NetZone::on_seal(*current_routing->get_iface());
 580   current_routing = current_routing->get_father();
 581 }
 582
 583 /** @brief Add a link connecting a host to the rest of its Zone (which must be cluster or vivaldi) */
 584 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 585 {
 586   const simgrid::kernel::routing::NetPoint* netpoint = simgrid::s4u::Host::by_name(hostlink->id)->get_netpoint();
 587   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 588   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 589              "Only hosts from Cluster and Vivaldi Zones can get a host_link.");
 590
 591   const simgrid::s4u::Link* linkUp   = simgrid::s4u::Link::by_name_or_null(hostlink->link_up);
 592   const simgrid::s4u::Link* linkDown = simgrid::s4u::Link::by_name_or_null(hostlink->link_down);
 593
 594   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 595   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 596
 597   auto* as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 598
 599   if (as_cluster->private_links_.find(netpoint->id()) != as_cluster->private_links_.end())
 600     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
 601
 602   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->get_cname(), netpoint->id());
 603   as_cluster->private_links_.insert({netpoint->id(), {linkUp->get_impl(), linkDown->get_impl()}});
 604 }
 605
 606 void sg_platf_new_trace(simgrid::kernel::routing::ProfileCreationArgs* profile)
 607 {
 608   simgrid::kernel::profile::Profile* mgr_profile;
 609   if (not profile->file.empty()) {
 610     mgr_profile = simgrid::kernel::profile::Profile::from_file(profile->file);
 611   } else {
 612     xbt_assert(not profile->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 613                profile->id.c_str());
 614     mgr_profile = simgrid::kernel::profile::Profile::from_string(profile->id, profile->pc_data, profile->periodicity);
 615   }
 616   traces_set_list.insert({profile->id, mgr_profile});
 617 }