src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2022. 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/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/kernel/routing/WifiZone.hpp>
  18 #include <simgrid/s4u/Engine.hpp>
  19 #include <simgrid/s4u/NetZone.hpp>
  20
  21 #include "simgrid/sg_config.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/surf/HostImpl.hpp"
  26 #include "src/surf/xml/platf.hpp"
  27 #include "src/surf/xml/platf_private.hpp"
  28
  29 #include <algorithm>
  30 #include <string>
  31
  32 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  33
  34 namespace simgrid::kernel::routing {
  35 xbt::signal<void(ClusterCreationArgs const&)> on_cluster_creation;
  36 } // namespace simgrid::kernel::routing
  37
  38 static simgrid::kernel::routing::ClusterZoneCreationArgs
  39     zone_cluster; /* temporary store data for irregular clusters, created with <zone routing="Cluster"> */
  40
  41 /** The current NetZone in the parsing */
  42 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  43 static simgrid::s4u::Host* current_host = nullptr;
  44
  45 /** Module management function: creates all internal data structures */
  46 void sg_platf_init()
  47 {
  48   // Do nothing: just for symmetry of user code
  49 }
  50
  51 /** Module management function: frees all internal data structures */
  52 void sg_platf_exit()
  53 {
  54   simgrid::kernel::routing::on_cluster_creation.disconnect_slots();
  55
  56   surf_parse_lex_destroy();
  57 }
  58
  59 /** @brief Add a host to the current NetZone */
  60 void sg_platf_new_host_begin(const simgrid::kernel::routing::HostCreationArgs* args)
  61 {
  62   current_host = current_routing->create_host(args->id, args->speed_per_pstate)
  63                      ->set_coordinates(args->coord)
  64                      ->set_core_count(args->core_amount)
  65                      ->set_state_profile(args->state_trace)
  66                      ->set_speed_profile(args->speed_trace);
  67 }
  68
  69 void sg_platf_new_host_set_properties(const std::unordered_map<std::string, std::string>& props)
  70 {
  71   xbt_assert(current_host, "Cannot set properties of the current host: none under construction");
  72   current_host->set_properties(props);
  73 }
  74
  75 void sg_platf_new_host_seal(int pstate)
  76 {
  77   xbt_assert(current_host, "Cannot seal the current Host: none under construction");
  78   current_host->seal();
  79
  80   /* When energy plugin is activated, changing the pstate requires to already have the HostEnergy extension whose
  81    * allocation is triggered by the on_creation signal. Then set_pstate must be called after the signal emission */
  82
  83   if (pstate != 0)
  84     current_host->set_pstate(pstate);
  85
  86   current_host = nullptr;
  87 }
  88
  89 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* args)
  90 {
  91   auto* zone = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
  92   xbt_assert(zone, "<peer> tag can only be used in Vivaldi netzones.");
  93
  94   const auto* peer = zone->create_host(args->id, {args->speed})
  95                          ->set_state_profile(args->state_trace)
  96                          ->set_speed_profile(args->speed_trace)
  97                          ->set_coordinates(args->coord)
  98                          ->seal();
  99
 100   zone->set_peer_link(peer->get_netpoint(), args->bw_in, args->bw_out);
 101 }
 102
 103 /** @brief Add a "router" to the network element list */
 104 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const std::string& coords)
 105 {
 106   auto* netpoint = current_routing->create_router(name)->set_coordinates(coords);
 107   XBT_DEBUG("Router '%s' has the id %lu", netpoint->get_cname(), netpoint->id());
 108
 109   return netpoint;
 110 }
 111
 112 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* args)
 113 {
 114   simgrid::s4u::Link* link;
 115   if (args->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 116     link = current_routing->create_split_duplex_link(args->id, args->bandwidths);
 117   } else {
 118     link = current_routing->create_link(args->id, args->bandwidths);
 119     link->get_impl()->set_sharing_policy(args->policy, {});
 120   }
 121
 122   link->set_properties(args->properties)
 123       ->set_state_profile(args->state_trace)
 124       ->set_latency_profile(args->latency_trace)
 125       ->set_bandwidth_profile(args->bandwidth_trace)
 126       ->set_latency(args->latency);
 127
 128   link->seal();
 129 }
 130
 131 void sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
 132 {
 133   const simgrid::s4u::Disk* new_disk = current_routing->create_disk(disk->id, disk->read_bw, disk->write_bw)
 134                                            ->set_host(current_host)
 135                                            ->set_properties(disk->properties)
 136                                            ->seal();
 137
 138   current_host->add_disk(new_disk);
 139 }
 140
 141 /*************************************************************************************************/
 142 /** @brief Auxiliary function to create hosts */
 143 static std::pair<simgrid::kernel::routing::NetPoint*, simgrid::kernel::routing::NetPoint*>
 144 sg_platf_cluster_create_host(const simgrid::kernel::routing::ClusterCreationArgs* cluster, simgrid::s4u::NetZone* zone,
 145                              const std::vector<unsigned long>& /*coord*/, unsigned long id)
 146 {
 147   xbt_assert(static_cast<unsigned long>(id) < cluster->radicals.size(),
 148              "Zone(%s): error when creating host number %lu in the zone. Insufficient number of radicals available "
 149              "(total = %zu). Check the 'radical' parameter in XML",
 150              cluster->id.c_str(), id, cluster->radicals.size());
 151
 152   std::string host_id = std::string(cluster->prefix) + std::to_string(cluster->radicals[id]) + cluster->suffix;
 153   XBT_DEBUG("Cluster: creating host=%s speed=%f", host_id.c_str(), cluster->speeds.front());
 154   const simgrid::s4u::Host* host = zone->create_host(host_id, cluster->speeds)
 155                                        ->set_core_count(cluster->core_amount)
 156                                        ->set_properties(cluster->properties)
 157                                        ->seal();
 158   return std::make_pair(host->get_netpoint(), nullptr);
 159 }
 160
 161 /** @brief Auxiliary function to create loopback links */
 162 static simgrid::s4u::Link*
 163 sg_platf_cluster_create_loopback(const simgrid::kernel::routing::ClusterCreationArgs* cluster,
 164                                  simgrid::s4u::NetZone* zone, const std::vector<unsigned long>& /*coord*/,
 165                                  unsigned long id)
 166 {
 167   xbt_assert(static_cast<unsigned long>(id) < cluster->radicals.size(),
 168              "Zone(%s): error when creating loopback for host number %lu in the zone. Insufficient number of "
 169              "radicals available "
 170              "(total = %zu). Check the 'radical' parameter in XML",
 171              cluster->id.c_str(), id, cluster->radicals.size());
 172
 173   std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(cluster->radicals[id]) + "_loopback";
 174   XBT_DEBUG("Cluster: creating loopback link=%s bw=%f", link_id.c_str(), cluster->loopback_bw);
 175
 176   simgrid::s4u::Link* loopback = zone->create_link(link_id, cluster->loopback_bw)
 177                                      ->set_sharing_policy(simgrid::s4u::Link::SharingPolicy::FATPIPE)
 178                                      ->set_latency(cluster->loopback_lat)
 179                                      ->seal();
 180   return loopback;
 181 }
 182
 183 /** @brief Auxiliary function to create limiter links */
 184 static simgrid::s4u::Link* sg_platf_cluster_create_limiter(const simgrid::kernel::routing::ClusterCreationArgs* cluster,
 185                                                            simgrid::s4u::NetZone* zone,
 186                                                            const std::vector<unsigned long>& /*coord*/,
 187                                                            unsigned long id)
 188 {
 189   std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(id) + "_limiter";
 190   XBT_DEBUG("Cluster: creating limiter link=%s bw=%f", link_id.c_str(), cluster->limiter_link);
 191
 192   simgrid::s4u::Link* limiter = zone->create_link(link_id, cluster->limiter_link)->seal();
 193   return limiter;
 194 }
 195
 196 /** @brief Create Torus, Fat-Tree and Dragonfly clusters */
 197 static void sg_platf_new_cluster_hierarchical(const simgrid::kernel::routing::ClusterCreationArgs* cluster)
 198 {
 199   using namespace std::placeholders;
 200   using simgrid::kernel::routing::DragonflyZone;
 201   using simgrid::kernel::routing::FatTreeZone;
 202   using simgrid::kernel::routing::TorusZone;
 203
 204   auto set_host = std::bind(sg_platf_cluster_create_host, cluster, _1, _2, _3);
 205   std::function<simgrid::s4u::ClusterCallbacks::ClusterLinkCb> set_loopback{};
 206   std::function<simgrid::s4u::ClusterCallbacks::ClusterLinkCb> set_limiter{};
 207
 208   if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 209     set_loopback = std::bind(sg_platf_cluster_create_loopback, cluster, _1, _2, _3);
 210   }
 211
 212   if (cluster->limiter_link > 0) {
 213     set_limiter = std::bind(sg_platf_cluster_create_limiter, cluster, _1, _2, _3);
 214   }
 215
 216   simgrid::s4u::NetZone const* parent = current_routing ? current_routing->get_iface() : nullptr;
 217   switch (cluster->topology) {
 218     case simgrid::kernel::routing::ClusterTopology::TORUS:
 219       simgrid::s4u::create_torus_zone(cluster->id, parent, TorusZone::parse_topo_parameters(cluster->topo_parameters),
 220                                       {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat,
 221                                       cluster->sharing_policy);
 222       break;
 223     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 224       simgrid::s4u::create_dragonfly_zone(
 225           cluster->id, parent, DragonflyZone::parse_topo_parameters(cluster->topo_parameters),
 226           {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat, cluster->sharing_policy);
 227       break;
 228     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 229       simgrid::s4u::create_fatTree_zone(
 230           cluster->id, parent, FatTreeZone::parse_topo_parameters(cluster->topo_parameters),
 231           {set_host, set_loopback, set_limiter}, cluster->bw, cluster->lat, cluster->sharing_policy);
 232       break;
 233     default:
 234       THROW_IMPOSSIBLE;
 235   }
 236 }
 237
 238 /*************************************************************************************************/
 239 /** @brief Create regular Cluster */
 240 static void sg_platf_new_cluster_flat(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 241 {
 242   auto* zone                          = simgrid::s4u::create_star_zone(cluster->id);
 243   if (const auto* parent = current_routing ? current_routing->get_iface() : nullptr)
 244     zone->set_parent(parent);
 245
 246   /* set properties */
 247   for (auto const& [key, value] : cluster->properties)
 248     zone->set_property(key, value);
 249
 250   /* Make the backbone */
 251   const simgrid::s4u::Link* backbone = nullptr;
 252   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 253     std::string bb_name = std::string(cluster->id) + "_backbone";
 254     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/> <!--backbone -->", bb_name.c_str(), cluster->bb_bw,
 255               cluster->bb_lat);
 256
 257     backbone = zone->create_link(bb_name, cluster->bb_bw)
 258                    ->set_sharing_policy(cluster->bb_sharing_policy)
 259                    ->set_latency(cluster->bb_lat)
 260                    ->seal();
 261   }
 262
 263   for (int const& i : cluster->radicals) {
 264     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 265
 266     XBT_DEBUG("<host\tid=\"%s\"\tspeed=\"%f\">", host_id.c_str(), cluster->speeds.front());
 267     const auto* host = zone->create_host(host_id, cluster->speeds)
 268                            ->set_core_count(cluster->core_amount)
 269                            ->set_properties(cluster->properties)
 270                            ->seal();
 271
 272     XBT_DEBUG("</host>");
 273
 274     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 275     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 276
 277     // add a loopback link
 278     if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
 279       std::string loopback_name = link_id + "_loopback";
 280       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", loopback_name.c_str(), cluster->loopback_bw);
 281
 282       const auto* loopback = zone->create_link(loopback_name, cluster->loopback_bw)
 283                                  ->set_sharing_policy(simgrid::s4u::Link::SharingPolicy::FATPIPE)
 284                                  ->set_latency(cluster->loopback_lat)
 285                                  ->seal();
 286
 287       zone->add_route(host->get_netpoint(), host->get_netpoint(), nullptr, nullptr,
 288                       {simgrid::s4u::LinkInRoute(loopback)});
 289     }
 290
 291     // add a limiter link (shared link to account for maximal bandwidth of the node)
 292     const simgrid::s4u::Link* limiter = nullptr;
 293     if (cluster->limiter_link > 0) {
 294       std::string limiter_name = std::string(link_id) + "_limiter";
 295       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", limiter_name.c_str(), cluster->limiter_link);
 296
 297       limiter = zone->create_link(limiter_name, cluster->limiter_link)->seal();
 298     }
 299
 300     // create link
 301     const simgrid::s4u::Link* link;
 302     if (cluster->sharing_policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 303       link = zone->create_split_duplex_link(link_id, cluster->bw)->set_latency(cluster->lat)->seal();
 304     } else {
 305       link = zone->create_link(link_id, cluster->bw)->set_latency(cluster->lat)->seal();
 306     }
 307
 308     /* adding routes */
 309     std::vector<simgrid::s4u::LinkInRoute> links;
 310     if (limiter)
 311       links.emplace_back(limiter);
 312     links.emplace_back(link, simgrid::s4u::LinkInRoute::Direction::UP);
 313     if (backbone)
 314       links.emplace_back(backbone);
 315
 316     zone->add_route(host->get_netpoint(), nullptr, nullptr, nullptr, links, true);
 317   }
 318
 319   // Add a router.
 320   XBT_DEBUG(" ");
 321   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 322   if (cluster->router_id.empty())
 323     cluster->router_id = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 324   auto* router = zone->create_router(cluster->router_id);
 325   zone->add_route(router, nullptr, nullptr, nullptr, {});
 326
 327   simgrid::kernel::routing::on_cluster_creation(*cluster);
 328 }
 329
 330 void sg_platf_new_tag_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 331 {
 332   switch (cluster->topology) {
 333     case simgrid::kernel::routing::ClusterTopology::TORUS:
 334     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 335     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 336       sg_platf_new_cluster_hierarchical(cluster);
 337       break;
 338     default:
 339       sg_platf_new_cluster_flat(cluster);
 340       break;
 341   }
 342 }
 343 /*************************************************************************************************/
 344 /** @brief Set the links for internal node inside a Cluster(Star) */
 345 static void sg_platf_cluster_set_hostlink(simgrid::kernel::routing::StarZone* zone,
 346                                           simgrid::kernel::routing::NetPoint* netpoint,
 347                                           const simgrid::s4u::Link* link_up, const simgrid::s4u::Link* link_down,
 348                                           const simgrid::s4u::Link* backbone)
 349 {
 350   XBT_DEBUG("Push Host_link for host '%s' to position %lu", netpoint->get_cname(), netpoint->id());
 351   simgrid::s4u::LinkInRoute linkUp{link_up};
 352   simgrid::s4u::LinkInRoute linkDown{link_down};
 353   if (backbone) {
 354     simgrid::s4u::LinkInRoute linkBB{backbone};
 355     zone->add_route(netpoint, nullptr, nullptr, nullptr, {linkUp, linkBB}, false);
 356     zone->add_route(nullptr, netpoint, nullptr, nullptr, {linkBB, linkDown}, false);
 357   } else {
 358     zone->add_route(netpoint, nullptr, nullptr, nullptr, {linkUp}, false);
 359     zone->add_route(nullptr, netpoint, nullptr, nullptr, {linkDown}, false);
 360   }
 361 }
 362
 363 /** @brief Add a link connecting a host to the rest of its StarZone */
 364 static void sg_platf_build_hostlink(simgrid::kernel::routing::StarZone* zone,
 365                                     const simgrid::kernel::routing::HostLinkCreationArgs* hostlink,
 366                                     const simgrid::s4u::Link* backbone)
 367 {
 368   const auto engine = simgrid::s4u::Engine::get_instance();
 369   auto netpoint     = engine->host_by_name(hostlink->id)->get_netpoint();
 370   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 371
 372   const auto linkUp   = engine->link_by_name_or_null(hostlink->link_up);
 373   const auto linkDown = engine->link_by_name_or_null(hostlink->link_down);
 374
 375   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 376   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 377   sg_platf_cluster_set_hostlink(zone, netpoint, linkUp, linkDown, backbone);
 378 }
 379
 380 /** @brief Create a cabinet (set of hosts) inside a Cluster(StarZone) */
 381 static void sg_platf_build_cabinet(simgrid::kernel::routing::StarZone* zone,
 382                                    const simgrid::kernel::routing::CabinetCreationArgs* args,
 383                                    const simgrid::s4u::Link* backbone)
 384 {
 385   for (int const& radical : args->radicals) {
 386     std::string id   = args->prefix + std::to_string(radical) + args->suffix;
 387     auto const* host = zone->create_host(id, {args->speed})->seal();
 388
 389     const auto* link_up   = zone->create_link("link_" + id + "_UP", {args->bw})->set_latency(args->lat)->seal();
 390     const auto* link_down = zone->create_link("link_" + id + "_DOWN", {args->bw})->set_latency(args->lat)->seal();
 391
 392     sg_platf_cluster_set_hostlink(zone, host->get_netpoint(), link_up, link_down, backbone);
 393   }
 394 }
 395
 396 static void sg_platf_zone_cluster_populate(const simgrid::kernel::routing::ClusterZoneCreationArgs* cluster)
 397 {
 398   auto* zone = dynamic_cast<simgrid::kernel::routing::StarZone*>(current_routing);
 399   xbt_assert(zone, "Host_links are only valid for Cluster(Star)");
 400
 401   const simgrid::s4u::Link* backbone = nullptr;
 402   /* create backbone */
 403   if (cluster->backbone) {
 404     sg_platf_new_link(cluster->backbone.get());
 405     backbone = simgrid::s4u::Link::by_name(cluster->backbone->id);
 406   }
 407
 408   /* create host_links for hosts */
 409   for (auto const& hostlink : cluster->host_links) {
 410     sg_platf_build_hostlink(zone, &hostlink, backbone);
 411   }
 412
 413   /* create cabinets */
 414   for (auto const& cabinet : cluster->cabinets) {
 415     sg_platf_build_cabinet(zone, &cabinet, backbone);
 416   }
 417 }
 418
 419 void routing_cluster_add_backbone(std::unique_ptr<simgrid::kernel::routing::LinkCreationArgs> link)
 420 {
 421   zone_cluster.backbone = std::move(link);
 422 }
 423
 424 void sg_platf_new_cabinet(const simgrid::kernel::routing::CabinetCreationArgs* args)
 425 {
 426   xbt_assert(args, "Invalid nullptr argument");
 427   zone_cluster.cabinets.emplace_back(*args);
 428 }
 429
 430 /*************************************************************************************************/
 431 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 432 {
 433   current_routing->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 434                              route->symmetrical);
 435 }
 436
 437 void sg_platf_new_bypass_route(simgrid::kernel::routing::RouteCreationArgs* route)
 438 {
 439   current_routing->add_bypass_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list);
 440 }
 441
 442 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 443 {
 444   const auto* engine = simgrid::s4u::Engine::get_instance();
 445   sg_host_t host = sg_host_by_name(actor->host);
 446   if (not host) {
 447     // The requested host does not exist. Do a nice message to the user
 448     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 449                       "' does not exist\nExisting hosts: '";
 450
 451     std::vector<simgrid::s4u::Host*> list = engine->get_all_hosts();
 452
 453     for (auto const& some_host : list) {
 454       msg += some_host->get_name();
 455       msg += "', '";
 456       if (msg.length() > 1024) {
 457         msg.pop_back(); // remove trailing quote
 458         msg += "...(list truncated)......";
 459         break;
 460       }
 461     }
 462     xbt_die("%s", msg.c_str());
 463   }
 464   const simgrid::kernel::actor::ActorCodeFactory& factory = engine->get_impl()->get_function(actor->function);
 465   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 466
 467   double start_time = actor->start_time;
 468   double kill_time  = actor->kill_time;
 469   bool auto_restart = actor->restart_on_failure;
 470
 471   std::string actor_name                 = actor->args[0];
 472   simgrid::kernel::actor::ActorCode code = factory(std::move(actor->args));
 473
 474   auto* arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, actor->properties,
 475                                                      auto_restart, /*daemon=*/false, /*restart_count=*/0);
 476
 477   host->get_impl()->add_actor_at_boot(arg);
 478
 479   if (start_time > simgrid::s4u::Engine::get_clock()) {
 480     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, actor->properties,
 481                                                  auto_restart, /*daemon=*/false, /*restart_count=*/0);
 482
 483     XBT_DEBUG("Actor %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 484     simgrid::kernel::timer::Timer::set(start_time, [arg]() {
 485       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(arg);
 486       delete arg;
 487     });
 488   } else { // start_time <= simgrid::s4u::Engine::get_clock()
 489     XBT_DEBUG("Starting actor %s(%s) right now", arg->name.c_str(), host->get_cname());
 490
 491     try {
 492       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(arg);
 493     } catch (simgrid::HostFailureException const&) {
 494       XBT_WARN("Starting actor %s(%s) failed because its host is turned off.", arg->name.c_str(), host->get_cname());
 495     }
 496   }
 497 }
 498
 499 /**
 500  * @brief Auxiliary function to build the object NetZoneImpl
 501  *
 502  * Builds the objects, setting its parent properties and root netzone if needed
 503  * @param zone the parameters defining the Zone to build.
 504  * @return Pointer to recently created netzone
 505  */
 506 static simgrid::kernel::routing::NetZoneImpl*
 507 sg_platf_create_zone(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 508 {
 509   /* search the routing model */
 510   const simgrid::s4u::NetZone* new_zone = nullptr;
 511
 512   if (strcasecmp(zone->routing.c_str(), "Cluster") == 0) {
 513     new_zone = simgrid::s4u::create_star_zone(zone->id);
 514   } else if (strcasecmp(zone->routing.c_str(), "Dijkstra") == 0) {
 515     new_zone = simgrid::s4u::create_dijkstra_zone(zone->id, false);
 516   } else if (strcasecmp(zone->routing.c_str(), "DijkstraCache") == 0) {
 517     new_zone = simgrid::s4u::create_dijkstra_zone(zone->id, true);
 518   } else if (strcasecmp(zone->routing.c_str(), "Floyd") == 0) {
 519     new_zone = simgrid::s4u::create_floyd_zone(zone->id);
 520   } else if (strcasecmp(zone->routing.c_str(), "Full") == 0) {
 521     new_zone = simgrid::s4u::create_full_zone(zone->id);
 522   } else if (strcasecmp(zone->routing.c_str(), "None") == 0) {
 523     new_zone = simgrid::s4u::create_empty_zone(zone->id);
 524   } else if (strcasecmp(zone->routing.c_str(), "Vivaldi") == 0) {
 525     new_zone = simgrid::s4u::create_vivaldi_zone(zone->id);
 526   } else if (strcasecmp(zone->routing.c_str(), "Wifi") == 0) {
 527     new_zone = simgrid::s4u::create_wifi_zone(zone->id);
 528   } else {
 529     xbt_die("Not a valid model!");
 530   }
 531
 532   simgrid::kernel::routing::NetZoneImpl* new_zone_impl = new_zone->get_impl();
 533   new_zone_impl->set_parent(current_routing);
 534
 535   return new_zone_impl;
 536 }
 537
 538 /**
 539  * @brief Add a Zone to the platform
 540  *
 541  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 542  * and before the corresponding call to sg_platf_new_zone_seal() will be added to this Zone.
 543  *
 544  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 545  *
 546  * @param zone the parameters defining the Zone to build.
 547  */
 548 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 549 {
 550   zone_cluster.routing = zone->routing;
 551   current_routing      = sg_platf_create_zone(zone);
 552
 553   return current_routing;
 554 }
 555
 556 void sg_platf_new_zone_set_properties(const std::unordered_map<std::string, std::string>& props)
 557 {
 558   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
 559
 560   current_routing->set_properties(props);
 561 }
 562
 563 /**
 564  * @brief Specify that the description of the current Zone is finished
 565  *
 566  * Once you've declared all the content of your Zone, you have to seal
 567  * it with this call. Your Zone is not usable until you call this function.
 568  */
 569 void sg_platf_new_zone_seal()
 570 {
 571   xbt_assert(current_routing, "Cannot seal the current Zone: none under construction");
 572   if (strcasecmp(zone_cluster.routing.c_str(), "Cluster") == 0) {
 573     sg_platf_zone_cluster_populate(&zone_cluster);
 574     zone_cluster.routing = "";
 575     zone_cluster.host_links.clear();
 576     zone_cluster.cabinets.clear();
 577     zone_cluster.backbone.reset();
 578   }
 579   current_routing = current_routing->get_parent();
 580 }
 581
 582 /** @brief Add a link connecting a host to the rest of its Zone (which must be cluster or vivaldi) */
 583 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 584 {
 585   xbt_assert(hostlink, "Invalid nullptr parameter");
 586   zone_cluster.host_links.emplace_back(*hostlink);
 587 }
 588
 589 void sg_platf_new_trace(const simgrid::kernel::routing::ProfileCreationArgs* args)
 590 {
 591   simgrid::kernel::profile::Profile* profile;
 592   if (not args->file.empty()) {
 593     profile = simgrid::kernel::profile::ProfileBuilder::from_file(args->file);
 594   } else {
 595     xbt_assert(not args->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 596                args->id.c_str());
 597     profile = simgrid::kernel::profile::ProfileBuilder::from_string(args->id, args->pc_data, args->periodicity);
 598   }
 599   traces_set_list.try_emplace(args->id, profile);
 600 }