src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2019. 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/s4u/Engine.hpp"
  19 #include "src/include/simgrid/sg_config.hpp"
  20 #include "src/include/surf/surf.hpp"
  21 #include "src/kernel/EngineImpl.hpp"
  22 #include "src/simix/smx_private.hpp"
  23 #include "src/surf/HostImpl.hpp"
  24 #include "src/surf/xml/platf_private.hpp"
  25
  26 #include <string>
  27
  28 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  29
  30 XBT_PRIVATE std::map<std::string, simgrid::kernel::resource::StorageImpl*> mount_list;
  31 XBT_PRIVATE std::vector<std::string> known_storages;
  32
  33 namespace simgrid {
  34 namespace surf {
  35
  36 simgrid::xbt::signal<void(kernel::routing::ClusterCreationArgs const&)> on_cluster;
  37 }
  38 }
  39
  40 static int surf_parse_models_setup_already_called = 0;
  41 std::map<std::string, simgrid::kernel::resource::StorageType*> storage_types;
  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   simgrid::s4u::on_platform_created.connect(check_disk_attachment);
  54 }
  55
  56 /** Module management function: frees all internal data structures */
  57 void sg_platf_exit() {
  58   simgrid::surf::on_cluster.disconnect_slots();
  59   simgrid::s4u::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(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()->create_host(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->set_state_profile(args->state_trace);
  85   if (args->speed_trace)
  86     host->pimpl_cpu->set_speed_profile(args->speed_trace);
  87   if (args->pstate != 0)
  88     host->pimpl_cpu->set_pstate(args->pstate);
  89   if (not args->coord.empty())
  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(const std::string& name, const char* coords)
  95 {
  96   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
  97     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
  98   xbt_assert(nullptr == simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(name),
  99              "Refusing to create a router named '%s': this name already describes a node.", name.c_str());
 100
 101   simgrid::kernel::routing::NetPoint* netpoint =
 102       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
 103   XBT_DEBUG("Router '%s' has the id %u", netpoint->get_cname(), netpoint->id());
 104
 105   if (coords && strcmp(coords, ""))
 106     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 107
 108
 109   return netpoint;
 110 }
 111
 112 static void sg_platf_new_link(simgrid::kernel::routing::LinkCreationArgs* link, const std::string& link_name)
 113 {
 114   simgrid::kernel::resource::LinkImpl* l =
 115       surf_network_model->create_link(link_name, link->bandwidth, link->latency, link->policy);
 116
 117   if (link->properties) {
 118     l->set_properties(*link->properties);
 119   }
 120
 121   if (link->latency_trace)
 122     l->set_latency_profile(link->latency_trace);
 123   if (link->bandwidth_trace)
 124     l->set_bandwidth_profile(link->bandwidth_trace);
 125   if (link->state_trace)
 126     l->set_state_profile(link->state_trace);
 127 }
 128
 129 void sg_platf_new_link(simgrid::kernel::routing::LinkCreationArgs* link)
 130 {
 131   if (link->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 132     sg_platf_new_link(link, link->id + "_UP");
 133     sg_platf_new_link(link, link->id + "_DOWN");
 134   } else {
 135     sg_platf_new_link(link, link->id);
 136   }
 137   delete link->properties;
 138 }
 139
 140 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 141 {
 142   using simgrid::kernel::routing::ClusterZone;
 143   using simgrid::kernel::routing::DragonflyZone;
 144   using simgrid::kernel::routing::FatTreeZone;
 145   using simgrid::kernel::routing::TorusZone;
 146
 147   int rankId=0;
 148
 149   // What an inventive way of initializing the AS that I have as ancestor :-(
 150   simgrid::kernel::routing::ZoneCreationArgs zone;
 151   zone.id = cluster->id;
 152   switch (cluster->topology) {
 153     case simgrid::kernel::routing::ClusterTopology::TORUS:
 154       zone.routing = A_surfxml_AS_routing_ClusterTorus;
 155       break;
 156     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 157       zone.routing = A_surfxml_AS_routing_ClusterDragonfly;
 158       break;
 159     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 160       zone.routing = A_surfxml_AS_routing_ClusterFatTree;
 161       break;
 162     default:
 163       zone.routing = A_surfxml_AS_routing_Cluster;
 164       break;
 165   }
 166   sg_platf_new_Zone_begin(&zone);
 167   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 168   current_as->parse_specific_arguments(cluster);
 169
 170   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 171     current_as->num_links_per_node_++;
 172     current_as->has_loopback_ = true;
 173   }
 174
 175   if(cluster->limiter_link > 0){
 176     current_as->num_links_per_node_++;
 177     current_as->has_limiter_ = true;
 178   }
 179
 180   for (int const& i : *cluster->radicals) {
 181     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 182     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 183
 184     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id.c_str(), cluster->speeds.front());
 185
 186     simgrid::kernel::routing::HostCreationArgs host;
 187     host.id = host_id.c_str();
 188     if ((cluster->properties != nullptr) && (not cluster->properties->empty())) {
 189       host.properties = new std::unordered_map<std::string, std::string>;
 190
 191       for (auto const& elm : *cluster->properties)
 192         host.properties->insert({elm.first, elm.second});
 193     }
 194
 195     host.speed_per_pstate = cluster->speeds;
 196     host.pstate = 0;
 197     host.core_amount = cluster->core_amount;
 198     host.coord = "";
 199     sg_platf_new_host(&host);
 200     XBT_DEBUG("</host>");
 201
 202     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 203
 204     // All links are saved in a matrix;
 205     // every row describes a single node; every node may have multiple links.
 206     // the first column may store a link from x to x if p_has_loopback is set
 207     // the second column may store a limiter link if p_has_limiter is set
 208     // other columns are to store one or more link for the node
 209
 210     //add a loopback link
 211     simgrid::s4u::Link* linkUp   = nullptr;
 212     simgrid::s4u::Link* linkDown = nullptr;
 213     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 214       std::string tmp_link = link_id + "_loopback";
 215       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
 216
 217       simgrid::kernel::routing::LinkCreationArgs link;
 218       link.id        = tmp_link;
 219       link.bandwidth = cluster->loopback_bw;
 220       link.latency   = cluster->loopback_lat;
 221       link.policy    = simgrid::s4u::Link::SharingPolicy::FATPIPE;
 222       sg_platf_new_link(&link);
 223       linkUp   = simgrid::s4u::Link::by_name_or_null(tmp_link);
 224       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 225
 226       auto* as_cluster = static_cast<ClusterZone*>(current_as);
 227       as_cluster->private_links_.insert({as_cluster->node_pos(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 228     }
 229
 230     //add a limiter link (shared link to account for maximal bandwidth of the node)
 231     linkUp   = nullptr;
 232     linkDown = nullptr;
 233     if(cluster->limiter_link > 0){
 234       std::string tmp_link = std::string(link_id) + "_limiter";
 235       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
 236
 237       simgrid::kernel::routing::LinkCreationArgs link;
 238       link.id        = tmp_link;
 239       link.bandwidth = cluster->limiter_link;
 240       link.latency = 0;
 241       link.policy    = simgrid::s4u::Link::SharingPolicy::SHARED;
 242       sg_platf_new_link(&link);
 243       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 244       linkUp   = linkDown;
 245       current_as->private_links_.insert(
 246           {current_as->node_pos_with_loopback(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 247     }
 248
 249     //call the cluster function that adds the others links
 250     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
 251       static_cast<FatTreeZone*>(current_as)->add_processing_node(i);
 252     } else {
 253       current_as->create_links_for_node(cluster, i, rankId, current_as->node_pos_with_loopback_limiter(rankId));
 254     }
 255     rankId++;
 256   }
 257   delete cluster->properties;
 258
 259   // Add a router.
 260   XBT_DEBUG(" ");
 261   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 262   if (cluster->router_id.empty()) {
 263     std::string newid   = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 264     current_as->router_ = sg_platf_new_router(newid, NULL);
 265   } else {
 266     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 267   }
 268
 269   //Make the backbone
 270   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 271
 272     simgrid::kernel::routing::LinkCreationArgs link;
 273     link.id        = std::string(cluster->id)+ "_backbone";
 274     link.bandwidth = cluster->bb_bw;
 275     link.latency   = cluster->bb_lat;
 276     link.policy    = cluster->bb_sharing_policy;
 277
 278     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 279     sg_platf_new_link(&link);
 280
 281     routing_cluster_add_backbone(simgrid::s4u::Link::by_name(link.id)->get_impl());
 282   }
 283
 284   XBT_DEBUG("</AS>");
 285   sg_platf_new_Zone_seal();
 286
 287   simgrid::surf::on_cluster(*cluster);
 288   delete cluster->radicals;
 289 }
 290
 291 void routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl* bb)
 292 {
 293   simgrid::kernel::routing::ClusterZone* cluster =
 294       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 295
 296   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 297   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->get_cname());
 298
 299   cluster->backbone_ = bb;
 300   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->get_cname());
 301 }
 302
 303 void sg_platf_new_cabinet(simgrid::kernel::routing::CabinetCreationArgs* cabinet)
 304 {
 305   for (int const& radical : *cabinet->radicals) {
 306     std::string hostname = cabinet->prefix + std::to_string(radical) + cabinet->suffix;
 307     simgrid::kernel::routing::HostCreationArgs host;
 308     host.pstate           = 0;
 309     host.core_amount      = 1;
 310     host.id               = hostname.c_str();
 311     host.speed_per_pstate.push_back(cabinet->speed);
 312     sg_platf_new_host(&host);
 313
 314     simgrid::kernel::routing::LinkCreationArgs link;
 315     link.policy    = simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX;
 316     link.latency   = cabinet->lat;
 317     link.bandwidth = cabinet->bw;
 318     link.id        = "link_" + hostname;
 319     sg_platf_new_link(&link);
 320
 321     simgrid::kernel::routing::HostLinkCreationArgs host_link;
 322     host_link.id        = hostname;
 323     host_link.link_up   = std::string("link_") + hostname + "_UP";
 324     host_link.link_down = std::string("link_") + hostname + "_DOWN";
 325     sg_platf_new_hostlink(&host_link);
 326   }
 327   delete cabinet->radicals;
 328 }
 329
 330 void sg_platf_new_storage(simgrid::kernel::routing::StorageCreationArgs* storage)
 331 {
 332   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
 333              "Refusing to add a second storage named \"%s\"", storage->id.c_str());
 334
 335   simgrid::kernel::resource::StorageType* stype;
 336   auto st = storage_types.find(storage->type_id);
 337   if (st != storage_types.end()) {
 338     stype = st->second;
 339   } else {
 340     xbt_die("No storage type '%s'", storage->type_id.c_str());
 341   }
 342
 343   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id.c_str(),
 344             storage->type_id.c_str(), storage->content.c_str());
 345
 346   known_storages.push_back(storage->id);
 347
 348   // if storage content is not specified use the content of storage_type if any
 349   if (storage->content.empty() && not stype->content.empty()) {
 350     storage->content = stype->content;
 351     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id.c_str(),
 352               stype->id.c_str());
 353   }
 354
 355   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 356             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
 357             "\n\t\tproperties '%p''\n",
 358             storage->id.c_str(), stype->model.c_str(), stype->id.c_str(), storage->content.c_str(),
 359             storage->properties);
 360
 361   auto s = surf_storage_model->createStorage(storage->id, stype->id, storage->content, storage->attach);
 362
 363   if (storage->properties) {
 364     s->set_properties(*storage->properties);
 365     delete storage->properties;
 366   }
 367 }
 368
 369 void sg_platf_new_storage_type(simgrid::kernel::routing::StorageTypeCreationArgs* storage_type)
 370 {
 371   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
 372              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id.c_str());
 373
 374   simgrid::kernel::resource::StorageType* stype = new simgrid::kernel::resource::StorageType(
 375       storage_type->id, storage_type->model, storage_type->content, storage_type->properties,
 376       storage_type->model_properties, storage_type->size);
 377
 378   XBT_DEBUG("Create a storage type id '%s' with model '%s', content '%s'", storage_type->id.c_str(),
 379             storage_type->model.c_str(), storage_type->content.c_str());
 380
 381   storage_types[storage_type->id] = stype;
 382 }
 383
 384 void sg_platf_new_mount(simgrid::kernel::routing::MountCreationArgs* mount)
 385 {
 386   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
 387              "Cannot mount non-existent disk \"%s\"", mount->storageId.c_str());
 388
 389   XBT_DEBUG("Mount '%s' on '%s'", mount->storageId.c_str(), mount->name.c_str());
 390
 391   if (mount_list.empty())
 392     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
 393   mount_list.insert({mount->name, simgrid::s4u::Engine::get_instance()->storage_by_name(mount->storageId)->get_impl()});
 394 }
 395
 396 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 397 {
 398   routing_get_current()->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 399                                    route->symmetrical);
 400 }
 401
 402 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
 403 {
 404   routing_get_current()->add_bypass_route(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
 405                                           bypassRoute->link_list, bypassRoute->symmetrical);
 406 }
 407
 408 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 409 {
 410   sg_host_t host = sg_host_by_name(actor->host);
 411   if (not host) {
 412     // The requested host does not exist. Do a nice message to the user
 413     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 414                       "' does not exist\nExisting hosts: '";
 415
 416     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::get_instance()->get_all_hosts();
 417
 418     for (auto const& some_host : list) {
 419       msg += some_host->get_name();
 420       msg += "', '";
 421       if (msg.length() > 1024) {
 422         msg.pop_back(); // remove trailing quote
 423         msg += "...(list truncated)......";
 424         break;
 425       }
 426     }
 427     xbt_die("%s", msg.c_str());
 428   }
 429   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(actor->function);
 430   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 431
 432   double start_time = actor->start_time;
 433   double kill_time  = actor->kill_time;
 434   bool auto_restart = actor->on_failure != simgrid::kernel::routing::ActorOnFailure::DIE;
 435
 436   std::string actor_name     = actor->args[0];
 437   simgrid::simix::ActorCode code = factory(std::move(actor->args));
 438   std::shared_ptr<std::unordered_map<std::string, std::string>> properties(actor->properties);
 439
 440   simgrid::kernel::actor::ProcessArg* arg =
 441       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 442
 443   host->pimpl_->actors_at_boot_.emplace_back(arg);
 444
 445   if (start_time > SIMIX_get_clock()) {
 446
 447     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 448
 449     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 450     simgrid::simix::Timer::set(start_time, [arg, auto_restart]() {
 451       simgrid::kernel::actor::ActorImplPtr actor = simgrid::kernel::actor::ActorImpl::create(
 452           arg->name.c_str(), std::move(arg->code), arg->data, arg->host, arg->properties.get(), nullptr);
 453       if (arg->kill_time >= 0)
 454         actor->set_kill_time(arg->kill_time);
 455       if (auto_restart)
 456         actor->set_auto_restart(auto_restart);
 457       delete arg;
 458     });
 459   } else {                      // start_time <= SIMIX_get_clock()
 460     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->get_cname());
 461
 462     try {
 463       simgrid::kernel::actor::ActorImplPtr new_actor = nullptr;
 464       new_actor = simgrid::kernel::actor::ActorImpl::create(arg->name.c_str(), std::move(code), nullptr, host,
 465                                                             arg->properties.get(), nullptr);
 466       /* The actor creation will fail if the host is currently dead, but that's fine */
 467       if (arg->kill_time >= 0)
 468         new_actor->set_kill_time(arg->kill_time);
 469       if (auto_restart)
 470         new_actor->set_auto_restart(auto_restart);
 471     } catch (simgrid::HostFailureException const&) {
 472       XBT_WARN("Deployment includes some initially turned off Hosts ... nevermind.");
 473     }
 474   }
 475 }
 476
 477 void sg_platf_new_peer(simgrid::kernel::routing::PeerCreationArgs* peer)
 478 {
 479   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 480   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 481
 482   std::vector<double> speed_per_pstate;
 483   speed_per_pstate.push_back(peer->speed);
 484   simgrid::s4u::Host* host = as->create_host(peer->id.c_str(), speed_per_pstate, 1, nullptr);
 485
 486   as->set_peer_link(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
 487
 488   /* Change from the defaults */
 489   if (peer->state_trace)
 490     host->pimpl_cpu->set_state_profile(peer->state_trace);
 491   if (peer->speed_trace)
 492     host->pimpl_cpu->set_speed_profile(peer->speed_trace);
 493 }
 494
 495 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 496 static void surf_config_models_setup()
 497 {
 498   std::string host_model_name    = simgrid::config::get_value<std::string>("host/model");
 499   std::string network_model_name = simgrid::config::get_value<std::string>("network/model");
 500   std::string cpu_model_name     = simgrid::config::get_value<std::string>("cpu/model");
 501   std::string storage_model_name = simgrid::config::get_value<std::string>("storage/model");
 502
 503   /* The compound host model is needed when using non-default net/cpu models */
 504   if ((not simgrid::config::is_default("network/model") || not simgrid::config::is_default("cpu/model")) &&
 505       simgrid::config::is_default("host/model")) {
 506     host_model_name = "compound";
 507     simgrid::config::set_value("host/model", host_model_name);
 508   }
 509
 510   XBT_DEBUG("host model: %s", host_model_name.c_str());
 511   if (host_model_name == "compound") {
 512     xbt_assert(not cpu_model_name.empty(), "Set a cpu model to use with the 'compound' host model");
 513     xbt_assert(not network_model_name.empty(), "Set a network model to use with the 'compound' host model");
 514
 515     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 516     surf_cpu_model_description[cpu_id].model_init_preparse();
 517
 518     int network_id = find_model_description(surf_network_model_description, network_model_name);
 519     surf_network_model_description[network_id].model_init_preparse();
 520   }
 521
 522   XBT_DEBUG("Call host_model_init");
 523   int host_id = find_model_description(surf_host_model_description, host_model_name);
 524   surf_host_model_description[host_id].model_init_preparse();
 525
 526   XBT_DEBUG("Call vm_model_init");
 527   surf_vm_model_init_HL13();
 528
 529   XBT_DEBUG("Call storage_model_init");
 530   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 531   surf_storage_model_description[storage_id].model_init_preparse();
 532 }
 533
 534 /**
 535  * @brief Add a Zone to the platform
 536  *
 537  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 538  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
 539  *
 540  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 541  *
 542  * @param zone the parameters defining the Zone to build.
 543  */
 544 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_Zone_begin(simgrid::kernel::routing::ZoneCreationArgs* zone)
 545 {
 546   if (not surf_parse_models_setup_already_called) {
 547     simgrid::s4u::on_platform_creation();
 548
 549     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 550      * That is, after the last <config> tag, if any, and before the first of cluster|peer|zone|trace|trace_connect
 551      *
 552      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 553      * (FIXME: check it out by creating a file beginning with one of these tags)
 554      * but cluster and peer come down to zone creations, so putting this verification here is correct.
 555      */
 556     surf_parse_models_setup_already_called = 1;
 557     surf_config_models_setup();
 558   }
 559
 560   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 561                             * any further config now that we created some real content */
 562
 563   /* search the routing model */
 564   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
 565   simgrid::kernel::resource::NetworkModel* netmodel =
 566       current_routing == nullptr ? surf_network_model : current_routing->network_model_;
 567   switch (zone->routing) {
 568     case A_surfxml_AS_routing_Cluster:
 569       new_zone = new simgrid::kernel::routing::ClusterZone(current_routing, zone->id, netmodel);
 570       break;
 571     case A_surfxml_AS_routing_ClusterDragonfly:
 572       new_zone = new simgrid::kernel::routing::DragonflyZone(current_routing, zone->id, netmodel);
 573       break;
 574     case A_surfxml_AS_routing_ClusterTorus:
 575       new_zone = new simgrid::kernel::routing::TorusZone(current_routing, zone->id, netmodel);
 576       break;
 577     case A_surfxml_AS_routing_ClusterFatTree:
 578       new_zone = new simgrid::kernel::routing::FatTreeZone(current_routing, zone->id, netmodel);
 579       break;
 580     case A_surfxml_AS_routing_Dijkstra:
 581       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, false);
 582       break;
 583     case A_surfxml_AS_routing_DijkstraCache:
 584       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, true);
 585       break;
 586     case A_surfxml_AS_routing_Floyd:
 587       new_zone = new simgrid::kernel::routing::FloydZone(current_routing, zone->id, netmodel);
 588       break;
 589     case A_surfxml_AS_routing_Full:
 590       new_zone = new simgrid::kernel::routing::FullZone(current_routing, zone->id, netmodel);
 591       break;
 592     case A_surfxml_AS_routing_None:
 593       new_zone = new simgrid::kernel::routing::EmptyZone(current_routing, zone->id, netmodel);
 594       break;
 595     case A_surfxml_AS_routing_Vivaldi:
 596       new_zone = new simgrid::kernel::routing::VivaldiZone(current_routing, zone->id, netmodel);
 597       break;
 598     default:
 599       xbt_die("Not a valid model!");
 600       break;
 601   }
 602
 603   if (current_routing == nullptr) { /* it is the first one */
 604     simgrid::s4u::Engine::get_instance()->set_netzone_root(new_zone->get_iface());
 605   } else {
 606     /* set the father behavior */
 607     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 608       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 609     /* add to the sons dictionary */
 610     current_routing->get_children()->push_back(new_zone);
 611   }
 612
 613   /* set the new current component of the tree */
 614   current_routing = new_zone;
 615   simgrid::s4u::NetZone::on_creation(*new_zone->get_iface()); // notify the signal
 616
 617   return new_zone;
 618 }
 619
 620 /**
 621  * @brief Specify that the description of the current AS is finished
 622  *
 623  * Once you've declared all the content of your AS, you have to seal
 624  * it with this call. Your AS is not usable until you call this function.
 625  */
 626 void sg_platf_new_Zone_seal()
 627 {
 628   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 629   current_routing->seal();
 630   simgrid::s4u::NetZone::on_seal(*current_routing->get_iface());
 631   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->get_father());
 632 }
 633
 634 /** @brief Add a link connecting a host to the rest of its AS (which must be cluster or vivaldi) */
 635 void sg_platf_new_hostlink(simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 636 {
 637   simgrid::kernel::routing::NetPoint* netpoint = simgrid::s4u::Host::by_name(hostlink->id)->pimpl_netpoint;
 638   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 639   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 640              "Only hosts from Cluster and Vivaldi ASes can get a host_link.");
 641
 642   simgrid::s4u::Link* linkUp   = simgrid::s4u::Link::by_name_or_null(hostlink->link_up);
 643   simgrid::s4u::Link* linkDown = simgrid::s4u::Link::by_name_or_null(hostlink->link_down);
 644
 645   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 646   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 647
 648   auto* as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 649
 650   if (as_cluster->private_links_.find(netpoint->id()) != as_cluster->private_links_.end())
 651     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
 652
 653   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->get_cname(), netpoint->id());
 654   as_cluster->private_links_.insert({netpoint->id(), {linkUp->get_impl(), linkDown->get_impl()}});
 655 }
 656
 657 void sg_platf_new_trace(simgrid::kernel::routing::ProfileCreationArgs* profile)
 658 {
 659   simgrid::kernel::profile::Profile* mgr_profile;
 660   if (not profile->file.empty()) {
 661     mgr_profile = simgrid::kernel::profile::Profile::from_file(profile->file);
 662   } else {
 663     xbt_assert(not profile->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 664                profile->id.c_str());
 665     mgr_profile = simgrid::kernel::profile::Profile::from_string(profile->id, profile->pc_data, profile->periodicity);
 666   }
 667   traces_set_list.insert({profile->id, mgr_profile});
 668 }