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