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/kernel/resource/profile/Profile.hpp"
  23 #include "src/simix/smx_private.hpp"
  24 #include "src/surf/HostImpl.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::kernel::resource::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 const&)> on_cluster;
  38 }
  39 }
  40
  41 static int surf_parse_models_setup_already_called = 0;
  42 std::map<std::string, simgrid::kernel::resource::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 {
  54   simgrid::s4u::on_platform_created.connect(check_disk_attachment);
  55 }
  56
  57 /** Module management function: frees all internal data structures */
  58 void sg_platf_exit() {
  59   simgrid::surf::on_cluster.disconnect_slots();
  60   simgrid::s4u::on_platform_created.disconnect_slots();
  61
  62   /* make sure that we will reinit the models while loading the platf once reinited */
  63   surf_parse_models_setup_already_called = 0;
  64   surf_parse_lex_destroy();
  65 }
  66
  67 /** @brief Add a host to the current AS */
  68 void sg_platf_new_host(simgrid::kernel::routing::HostCreationArgs* args)
  69 {
  70   std::map<std::string, std::string> props;
  71   if (args->properties) {
  72     for (auto const& elm : *args->properties)
  73       props.insert({elm.first, elm.second});
  74     delete args->properties;
  75   }
  76
  77   simgrid::s4u::Host* host =
  78       routing_get_current()->create_host(args->id, args->speed_per_pstate, args->core_amount, &props);
  79
  80   host->pimpl_->storage_ = mount_list;
  81   mount_list.clear();
  82
  83   /* Change from the defaults */
  84   if (args->state_trace)
  85     host->pimpl_cpu->set_state_profile(args->state_trace);
  86   if (args->speed_trace)
  87     host->pimpl_cpu->set_speed_profile(args->speed_trace);
  88   if (args->pstate != 0)
  89     host->pimpl_cpu->set_pstate(args->pstate);
  90   if (not args->coord.empty())
  91     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netpoint, args->coord);
  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   simgrid::kernel::routing::NetPoint* 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(simgrid::kernel::routing::LinkCreationArgs* link, const std::string& link_name)
 114 {
 115   simgrid::kernel::resource::LinkImpl* l =
 116       surf_network_model->create_link(link_name, link->bandwidth, link->latency, link->policy);
 117
 118   if (link->properties) {
 119     l->set_properties(*link->properties);
 120   }
 121
 122   if (link->latency_trace)
 123     l->set_latency_profile(link->latency_trace);
 124   if (link->bandwidth_trace)
 125     l->set_bandwidth_profile(link->bandwidth_trace);
 126   if (link->state_trace)
 127     l->set_state_profile(link->state_trace);
 128 }
 129
 130 void sg_platf_new_link(simgrid::kernel::routing::LinkCreationArgs* link)
 131 {
 132   if (link->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 133     sg_platf_new_link(link, link->id + "_UP");
 134     sg_platf_new_link(link, link->id + "_DOWN");
 135   } else {
 136     sg_platf_new_link(link, link->id);
 137   }
 138   delete link->properties;
 139 }
 140
 141 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 142 {
 143   using simgrid::kernel::routing::ClusterZone;
 144   using simgrid::kernel::routing::DragonflyZone;
 145   using simgrid::kernel::routing::FatTreeZone;
 146   using simgrid::kernel::routing::TorusZone;
 147
 148   int rankId=0;
 149
 150   // What an inventive way of initializing the AS that I have as ancestor :-(
 151   simgrid::kernel::routing::ZoneCreationArgs zone;
 152   zone.id = cluster->id;
 153   switch (cluster->topology) {
 154     case simgrid::kernel::routing::ClusterTopology::TORUS:
 155       zone.routing = A_surfxml_AS_routing_ClusterTorus;
 156       break;
 157     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 158       zone.routing = A_surfxml_AS_routing_ClusterDragonfly;
 159       break;
 160     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 161       zone.routing = A_surfxml_AS_routing_ClusterFatTree;
 162       break;
 163     default:
 164       zone.routing = A_surfxml_AS_routing_Cluster;
 165       break;
 166   }
 167   sg_platf_new_Zone_begin(&zone);
 168   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 169   current_as->parse_specific_arguments(cluster);
 170
 171   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 172     current_as->num_links_per_node_++;
 173     current_as->has_loopback_ = true;
 174   }
 175
 176   if(cluster->limiter_link > 0){
 177     current_as->num_links_per_node_++;
 178     current_as->has_limiter_ = true;
 179   }
 180
 181   for (int const& i : *cluster->radicals) {
 182     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 183     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 184
 185     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id.c_str(), cluster->speeds.front());
 186
 187     simgrid::kernel::routing::HostCreationArgs host;
 188     host.id = host_id.c_str();
 189     if ((cluster->properties != nullptr) && (not cluster->properties->empty())) {
 190       host.properties = new std::unordered_map<std::string, std::string>;
 191
 192       for (auto const& elm : *cluster->properties)
 193         host.properties->insert({elm.first, elm.second});
 194     }
 195
 196     host.speed_per_pstate = cluster->speeds;
 197     host.pstate = 0;
 198     host.core_amount = cluster->core_amount;
 199     host.coord = "";
 200     sg_platf_new_host(&host);
 201     XBT_DEBUG("</host>");
 202
 203     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 204
 205     // All links are saved in a matrix;
 206     // every row describes a single node; every node may have multiple links.
 207     // the first column may store a link from x to x if p_has_loopback is set
 208     // the second column may store a limiter link if p_has_limiter is set
 209     // other columns are to store one or more link for the node
 210
 211     //add a loopback link
 212     simgrid::s4u::Link* linkUp   = nullptr;
 213     simgrid::s4u::Link* linkDown = nullptr;
 214     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 215       std::string tmp_link = link_id + "_loopback";
 216       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
 217
 218       simgrid::kernel::routing::LinkCreationArgs link;
 219       link.id        = tmp_link;
 220       link.bandwidth = cluster->loopback_bw;
 221       link.latency   = cluster->loopback_lat;
 222       link.policy    = simgrid::s4u::Link::SharingPolicy::FATPIPE;
 223       sg_platf_new_link(&link);
 224       linkUp   = simgrid::s4u::Link::by_name_or_null(tmp_link);
 225       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 226
 227       auto* as_cluster = static_cast<ClusterZone*>(current_as);
 228       as_cluster->private_links_.insert({as_cluster->node_pos(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 229     }
 230
 231     //add a limiter link (shared link to account for maximal bandwidth of the node)
 232     linkUp   = nullptr;
 233     linkDown = nullptr;
 234     if(cluster->limiter_link > 0){
 235       std::string tmp_link = std::string(link_id) + "_limiter";
 236       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
 237
 238       simgrid::kernel::routing::LinkCreationArgs link;
 239       link.id        = tmp_link;
 240       link.bandwidth = cluster->limiter_link;
 241       link.latency = 0;
 242       link.policy    = simgrid::s4u::Link::SharingPolicy::SHARED;
 243       sg_platf_new_link(&link);
 244       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 245       linkUp   = linkDown;
 246       current_as->private_links_.insert(
 247           {current_as->node_pos_with_loopback(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 248     }
 249
 250     //call the cluster function that adds the others links
 251     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
 252       static_cast<FatTreeZone*>(current_as)->add_processing_node(i);
 253     } else {
 254       current_as->create_links_for_node(cluster, i, rankId, current_as->node_pos_with_loopback_limiter(rankId));
 255     }
 256     rankId++;
 257   }
 258   delete cluster->properties;
 259
 260   // Add a router.
 261   XBT_DEBUG(" ");
 262   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 263   if (cluster->router_id.empty()) {
 264     std::string newid   = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 265     current_as->router_ = sg_platf_new_router(newid, NULL);
 266   } else {
 267     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 268   }
 269
 270   //Make the backbone
 271   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 272
 273     simgrid::kernel::routing::LinkCreationArgs link;
 274     link.id        = std::string(cluster->id)+ "_backbone";
 275     link.bandwidth = cluster->bb_bw;
 276     link.latency   = cluster->bb_lat;
 277     link.policy    = cluster->bb_sharing_policy;
 278
 279     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 280     sg_platf_new_link(&link);
 281
 282     routing_cluster_add_backbone(simgrid::s4u::Link::by_name(link.id)->get_impl());
 283   }
 284
 285   XBT_DEBUG("</AS>");
 286   sg_platf_new_Zone_seal();
 287
 288   simgrid::surf::on_cluster(*cluster);
 289   delete cluster->radicals;
 290 }
 291
 292 void routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl* bb)
 293 {
 294   simgrid::kernel::routing::ClusterZone* cluster =
 295       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 296
 297   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 298   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->get_cname());
 299
 300   cluster->backbone_ = bb;
 301   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->get_cname());
 302 }
 303
 304 void sg_platf_new_cabinet(simgrid::kernel::routing::CabinetCreationArgs* cabinet)
 305 {
 306   for (int const& radical : *cabinet->radicals) {
 307     std::string hostname = cabinet->prefix + std::to_string(radical) + cabinet->suffix;
 308     simgrid::kernel::routing::HostCreationArgs host;
 309     host.pstate           = 0;
 310     host.core_amount      = 1;
 311     host.id               = hostname.c_str();
 312     host.speed_per_pstate.push_back(cabinet->speed);
 313     sg_platf_new_host(&host);
 314
 315     simgrid::kernel::routing::LinkCreationArgs link;
 316     link.policy    = simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX;
 317     link.latency   = cabinet->lat;
 318     link.bandwidth = cabinet->bw;
 319     link.id        = "link_" + hostname;
 320     sg_platf_new_link(&link);
 321
 322     simgrid::kernel::routing::HostLinkCreationArgs host_link;
 323     host_link.id        = hostname;
 324     host_link.link_up   = std::string("link_") + hostname + "_UP";
 325     host_link.link_down = std::string("link_") + hostname + "_DOWN";
 326     sg_platf_new_hostlink(&host_link);
 327   }
 328   delete cabinet->radicals;
 329 }
 330
 331 void sg_platf_new_storage(simgrid::kernel::routing::StorageCreationArgs* storage)
 332 {
 333   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
 334              "Refusing to add a second storage named \"%s\"", storage->id.c_str());
 335
 336   simgrid::kernel::resource::StorageType* stype;
 337   auto st = storage_types.find(storage->type_id);
 338   if (st != storage_types.end()) {
 339     stype = st->second;
 340   } else {
 341     xbt_die("No storage type '%s'", storage->type_id.c_str());
 342   }
 343
 344   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id.c_str(),
 345             storage->type_id.c_str(), storage->content.c_str());
 346
 347   known_storages.push_back(storage->id);
 348
 349   // if storage content is not specified use the content of storage_type if any
 350   if (storage->content.empty() && not stype->content.empty()) {
 351     storage->content = stype->content;
 352     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id.c_str(),
 353               stype->id.c_str());
 354   }
 355
 356   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 357             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
 358             "\n\t\tproperties '%p''\n",
 359             storage->id.c_str(), stype->model.c_str(), stype->id.c_str(), storage->content.c_str(),
 360             storage->properties);
 361
 362   auto s = surf_storage_model->createStorage(storage->id, stype->id, storage->content, storage->attach);
 363
 364   if (storage->properties) {
 365     s->set_properties(*storage->properties);
 366     delete storage->properties;
 367   }
 368 }
 369
 370 void sg_platf_new_storage_type(simgrid::kernel::routing::StorageTypeCreationArgs* storage_type)
 371 {
 372   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
 373              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id.c_str());
 374
 375   simgrid::kernel::resource::StorageType* stype = new simgrid::kernel::resource::StorageType(
 376       storage_type->id, storage_type->model, storage_type->content, storage_type->properties,
 377       storage_type->model_properties, storage_type->size);
 378
 379   XBT_DEBUG("Create a storage type id '%s' with model '%s', content '%s'", storage_type->id.c_str(),
 380             storage_type->model.c_str(), storage_type->content.c_str());
 381
 382   storage_types[storage_type->id] = stype;
 383 }
 384
 385 void sg_platf_new_mount(simgrid::kernel::routing::MountCreationArgs* mount)
 386 {
 387   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
 388              "Cannot mount non-existent disk \"%s\"", mount->storageId.c_str());
 389
 390   XBT_DEBUG("Mount '%s' on '%s'", mount->storageId.c_str(), mount->name.c_str());
 391
 392   if (mount_list.empty())
 393     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
 394   mount_list.insert({mount->name, simgrid::s4u::Engine::get_instance()->storage_by_name(mount->storageId)->get_impl()});
 395 }
 396
 397 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 398 {
 399   routing_get_current()->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 400                                    route->symmetrical);
 401 }
 402
 403 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
 404 {
 405   routing_get_current()->add_bypass_route(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
 406                                           bypassRoute->link_list, bypassRoute->symmetrical);
 407 }
 408
 409 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 410 {
 411   sg_host_t host = sg_host_by_name(actor->host);
 412   if (not host) {
 413     // The requested host does not exist. Do a nice message to the user
 414     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 415                       "' does not exist\nExisting hosts: '";
 416
 417     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::get_instance()->get_all_hosts();
 418
 419     for (auto const& some_host : list) {
 420       msg += some_host->get_name();
 421       msg += "', '";
 422       if (msg.length() > 1024) {
 423         msg.pop_back(); // remove trailing quote
 424         msg += "...(list truncated)......";
 425         break;
 426       }
 427     }
 428     xbt_die("%s", msg.c_str());
 429   }
 430   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(actor->function);
 431   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 432
 433   double start_time = actor->start_time;
 434   double kill_time  = actor->kill_time;
 435   bool auto_restart = actor->on_failure != simgrid::kernel::routing::ActorOnFailure::DIE;
 436
 437   std::string actor_name     = actor->args[0];
 438   simgrid::simix::ActorCode code = factory(std::move(actor->args));
 439   std::shared_ptr<std::unordered_map<std::string, std::string>> properties(actor->properties);
 440
 441   simgrid::kernel::actor::ProcessArg* arg =
 442       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 443
 444   host->pimpl_->actors_at_boot_.emplace_back(arg);
 445
 446   if (start_time > SIMIX_get_clock()) {
 447
 448     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 449
 450     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 451     simgrid::simix::Timer::set(start_time, [arg, auto_restart]() {
 452       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(
 453           arg->name.c_str(), std::move(arg->code), arg->data, arg->host, arg->properties.get(), nullptr);
 454       if (arg->kill_time >= 0)
 455         new_actor->set_kill_time(arg->kill_time);
 456       if (auto_restart)
 457         new_actor->set_auto_restart(auto_restart);
 458       delete arg;
 459     });
 460   } else {                      // start_time <= SIMIX_get_clock()
 461     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->get_cname());
 462
 463     try {
 464       simgrid::kernel::actor::ActorImplPtr new_actor = nullptr;
 465       new_actor = simgrid::kernel::actor::ActorImpl::create(arg->name.c_str(), std::move(code), nullptr, host,
 466                                                             arg->properties.get(), nullptr);
 467       /* The actor creation will fail if the host is currently dead, but that's fine */
 468       if (arg->kill_time >= 0)
 469         new_actor->set_kill_time(arg->kill_time);
 470       if (auto_restart)
 471         new_actor->set_auto_restart(auto_restart);
 472     } catch (simgrid::HostFailureException const&) {
 473       XBT_WARN("Deployment includes some initially turned off Hosts ... nevermind.");
 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> speed_per_pstate;
 484   speed_per_pstate.push_back(peer->speed);
 485   simgrid::s4u::Host* host = as->create_host(peer->id.c_str(), speed_per_pstate, 1, nullptr);
 486
 487   as->set_peer_link(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->set_state_profile(peer->state_trace);
 492   if (peer->speed_trace)
 493     host->pimpl_cpu->set_speed_profile(peer->speed_trace);
 494 }
 495
 496 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 497 static void surf_config_models_setup()
 498 {
 499   std::string host_model_name    = simgrid::config::get_value<std::string>("host/model");
 500   std::string network_model_name = simgrid::config::get_value<std::string>("network/model");
 501   std::string cpu_model_name     = simgrid::config::get_value<std::string>("cpu/model");
 502   std::string storage_model_name = simgrid::config::get_value<std::string>("storage/model");
 503
 504   /* The compound host model is needed when using non-default net/cpu models */
 505   if ((not simgrid::config::is_default("network/model") || not simgrid::config::is_default("cpu/model")) &&
 506       simgrid::config::is_default("host/model")) {
 507     host_model_name = "compound";
 508     simgrid::config::set_value("host/model", host_model_name);
 509   }
 510
 511   XBT_DEBUG("host model: %s", host_model_name.c_str());
 512   if (host_model_name == "compound") {
 513     xbt_assert(not cpu_model_name.empty(), "Set a cpu model to use with the 'compound' host model");
 514     xbt_assert(not network_model_name.empty(), "Set a network model to use with the 'compound' host model");
 515
 516     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 517     surf_cpu_model_description[cpu_id].model_init_preparse();
 518
 519     int network_id = find_model_description(surf_network_model_description, network_model_name);
 520     surf_network_model_description[network_id].model_init_preparse();
 521   }
 522
 523   XBT_DEBUG("Call host_model_init");
 524   int host_id = find_model_description(surf_host_model_description, host_model_name);
 525   surf_host_model_description[host_id].model_init_preparse();
 526
 527   XBT_DEBUG("Call vm_model_init");
 528   surf_vm_model_init_HL13();
 529
 530   XBT_DEBUG("Call storage_model_init");
 531   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 532   surf_storage_model_description[storage_id].model_init_preparse();
 533 }
 534
 535 /**
 536  * @brief Add a Zone to the platform
 537  *
 538  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 539  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
 540  *
 541  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 542  *
 543  * @param zone the parameters defining the Zone to build.
 544  */
 545 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_Zone_begin(simgrid::kernel::routing::ZoneCreationArgs* zone)
 546 {
 547   if (not surf_parse_models_setup_already_called) {
 548     simgrid::s4u::on_platform_creation();
 549
 550     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 551      * That is, after the last <config> tag, if any, and before the first of cluster|peer|zone|trace|trace_connect
 552      *
 553      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 554      * (FIXME: check it out by creating a file beginning with one of these tags)
 555      * but cluster and peer come down to zone creations, so putting this verification here is correct.
 556      */
 557     surf_parse_models_setup_already_called = 1;
 558     surf_config_models_setup();
 559   }
 560
 561   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 562                             * any further config now that we created some real content */
 563
 564   /* search the routing model */
 565   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
 566   simgrid::kernel::resource::NetworkModel* netmodel =
 567       current_routing == nullptr ? surf_network_model : current_routing->network_model_;
 568   switch (zone->routing) {
 569     case A_surfxml_AS_routing_Cluster:
 570       new_zone = new simgrid::kernel::routing::ClusterZone(current_routing, zone->id, netmodel);
 571       break;
 572     case A_surfxml_AS_routing_ClusterDragonfly:
 573       new_zone = new simgrid::kernel::routing::DragonflyZone(current_routing, zone->id, netmodel);
 574       break;
 575     case A_surfxml_AS_routing_ClusterTorus:
 576       new_zone = new simgrid::kernel::routing::TorusZone(current_routing, zone->id, netmodel);
 577       break;
 578     case A_surfxml_AS_routing_ClusterFatTree:
 579       new_zone = new simgrid::kernel::routing::FatTreeZone(current_routing, zone->id, netmodel);
 580       break;
 581     case A_surfxml_AS_routing_Dijkstra:
 582       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, false);
 583       break;
 584     case A_surfxml_AS_routing_DijkstraCache:
 585       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, true);
 586       break;
 587     case A_surfxml_AS_routing_Floyd:
 588       new_zone = new simgrid::kernel::routing::FloydZone(current_routing, zone->id, netmodel);
 589       break;
 590     case A_surfxml_AS_routing_Full:
 591       new_zone = new simgrid::kernel::routing::FullZone(current_routing, zone->id, netmodel);
 592       break;
 593     case A_surfxml_AS_routing_None:
 594       new_zone = new simgrid::kernel::routing::EmptyZone(current_routing, zone->id, netmodel);
 595       break;
 596     case A_surfxml_AS_routing_Vivaldi:
 597       new_zone = new simgrid::kernel::routing::VivaldiZone(current_routing, zone->id, netmodel);
 598       break;
 599     default:
 600       xbt_die("Not a valid model!");
 601       break;
 602   }
 603
 604   if (current_routing == nullptr) { /* it is the first one */
 605     simgrid::s4u::Engine::get_instance()->set_netzone_root(new_zone->get_iface());
 606   } else {
 607     /* set the father behavior */
 608     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 609       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 610     /* add to the sons dictionary */
 611     current_routing->get_children()->push_back(new_zone);
 612   }
 613
 614   /* set the new current component of the tree */
 615   current_routing = new_zone;
 616   simgrid::s4u::NetZone::on_creation(*new_zone->get_iface()); // notify the signal
 617
 618   return new_zone;
 619 }
 620
 621 /**
 622  * @brief Specify that the description of the current AS is finished
 623  *
 624  * Once you've declared all the content of your AS, you have to seal
 625  * it with this call. Your AS is not usable until you call this function.
 626  */
 627 void sg_platf_new_Zone_seal()
 628 {
 629   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 630   current_routing->seal();
 631   simgrid::s4u::NetZone::on_seal(*current_routing->get_iface());
 632   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->get_father());
 633 }
 634
 635 /** @brief Add a link connecting a host to the rest of its AS (which must be cluster or vivaldi) */
 636 void sg_platf_new_hostlink(simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 637 {
 638   simgrid::kernel::routing::NetPoint* netpoint = simgrid::s4u::Host::by_name(hostlink->id)->pimpl_netpoint;
 639   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 640   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 641              "Only hosts from Cluster and Vivaldi ASes can get a host_link.");
 642
 643   simgrid::s4u::Link* linkUp   = simgrid::s4u::Link::by_name_or_null(hostlink->link_up);
 644   simgrid::s4u::Link* linkDown = simgrid::s4u::Link::by_name_or_null(hostlink->link_down);
 645
 646   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 647   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 648
 649   auto* as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 650
 651   if (as_cluster->private_links_.find(netpoint->id()) != as_cluster->private_links_.end())
 652     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
 653
 654   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->get_cname(), netpoint->id());
 655   as_cluster->private_links_.insert({netpoint->id(), {linkUp->get_impl(), linkDown->get_impl()}});
 656 }
 657
 658 void sg_platf_new_trace(simgrid::kernel::routing::ProfileCreationArgs* profile)
 659 {
 660   simgrid::kernel::profile::Profile* mgr_profile;
 661   if (not profile->file.empty()) {
 662     mgr_profile = simgrid::kernel::profile::Profile::from_file(profile->file);
 663   } else {
 664     xbt_assert(not profile->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 665                profile->id.c_str());
 666     mgr_profile = simgrid::kernel::profile::Profile::from_string(profile->id, profile->pc_data, profile->periodicity);
 667   }
 668   traces_set_list.insert({profile->id, mgr_profile});
 669 }