src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2020. 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/DiskImpl.hpp"
  23 #include "src/kernel/resource/profile/Profile.hpp"
  24 #include "src/simix/smx_private.hpp"
  25 #include "src/surf/HostImpl.hpp"
  26 #include "src/surf/xml/platf_private.hpp"
  27
  28 #include <string>
  29
  30 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  31
  32 XBT_PRIVATE std::map<std::string, simgrid::kernel::resource::StorageImpl*> mount_list;
  33 XBT_PRIVATE std::vector<std::string> known_storages;
  34
  35 namespace simgrid {
  36 namespace kernel {
  37 namespace routing {
  38 xbt::signal<void(ClusterCreationArgs const&)> on_cluster_creation;
  39 } // namespace routing
  40 } // namespace kernel
  41 } // namespace simgrid
  42
  43 static int surf_parse_models_setup_already_called = 0;
  44 std::map<std::string, simgrid::kernel::resource::StorageType*> storage_types;
  45
  46 /** The current AS in the parsing */
  47 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  48 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  49 {
  50   return current_routing;
  51 }
  52
  53 /** Module management function: creates all internal data structures */
  54 void sg_platf_init()
  55 {
  56   simgrid::s4u::Engine::on_platform_created.connect(check_disk_attachment);
  57 }
  58
  59 /** Module management function: frees all internal data structures */
  60 void sg_platf_exit() {
  61   simgrid::kernel::routing::on_cluster_creation.disconnect_slots();
  62   simgrid::s4u::Engine::on_platform_created.disconnect_slots();
  63
  64   /* make sure that we will reinit the models while loading the platf once reinited */
  65   surf_parse_models_setup_already_called = 0;
  66   surf_parse_lex_destroy();
  67 }
  68
  69 /** @brief Add a host to the current AS */
  70 void sg_platf_new_host(simgrid::kernel::routing::HostCreationArgs* args)
  71 {
  72   std::map<std::string, std::string> props;
  73   if (args->properties) {
  74     for (auto const& elm : *args->properties)
  75       props.insert({elm.first, elm.second});
  76     delete args->properties;
  77   }
  78
  79   simgrid::s4u::Host* host =
  80       routing_get_current()->create_host(args->id, args->speed_per_pstate, args->core_amount, &props);
  81
  82   host->pimpl_->storage_ = mount_list;
  83   mount_list.clear();
  84
  85   host->pimpl_->disks_ = std::move(args->disks);
  86   for (auto d : host->pimpl_->disks_)
  87     d->set_host(host);
  88
  89   /* Change from the defaults */
  90   if (args->state_trace)
  91     host->set_state_profile(args->state_trace);
  92   if (args->speed_trace)
  93     host->set_speed_profile(args->speed_trace);
  94   if (args->pstate != 0)
  95     host->set_pstate(args->pstate);
  96   if (not args->coord.empty())
  97     new simgrid::kernel::routing::vivaldi::Coords(host->get_netpoint(), args->coord);
  98 }
  99
 100 /** @brief Add a "router" to the network element list */
 101 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const char* coords)
 102 {
 103   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 104     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 105   xbt_assert(nullptr == simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(name),
 106              "Refusing to create a router named '%s': this name already describes a node.", name.c_str());
 107
 108   simgrid::kernel::routing::NetPoint* netpoint =
 109       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
 110   XBT_DEBUG("Router '%s' has the id %u", netpoint->get_cname(), netpoint->id());
 111
 112   if (coords && strcmp(coords, ""))
 113     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 114
 115
 116   return netpoint;
 117 }
 118
 119 static void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* link, const std::string& link_name)
 120 {
 121   simgrid::kernel::resource::LinkImpl* l =
 122       surf_network_model->create_link(link_name, link->bandwidths, link->latency, link->policy);
 123
 124   if (link->properties) {
 125     l->set_properties(*link->properties);
 126   }
 127
 128   if (link->latency_trace)
 129     l->set_latency_profile(link->latency_trace);
 130   if (link->bandwidth_trace)
 131     l->set_bandwidth_profile(link->bandwidth_trace);
 132   if (link->state_trace)
 133     l->set_state_profile(link->state_trace);
 134 }
 135
 136 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* link)
 137 {
 138   if (link->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 139     sg_platf_new_link(link, link->id + "_UP");
 140     sg_platf_new_link(link, link->id + "_DOWN");
 141   } else {
 142     sg_platf_new_link(link, link->id);
 143   }
 144   delete link->properties;
 145 }
 146
 147 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 148 {
 149   using simgrid::kernel::routing::ClusterZone;
 150   using simgrid::kernel::routing::DragonflyZone;
 151   using simgrid::kernel::routing::FatTreeZone;
 152   using simgrid::kernel::routing::TorusZone;
 153
 154   int rankId=0;
 155
 156   // What an inventive way of initializing the AS that I have as ancestor :-(
 157   simgrid::kernel::routing::ZoneCreationArgs zone;
 158   zone.id = cluster->id;
 159   switch (cluster->topology) {
 160     case simgrid::kernel::routing::ClusterTopology::TORUS:
 161       zone.routing = A_surfxml_AS_routing_ClusterTorus;
 162       break;
 163     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 164       zone.routing = A_surfxml_AS_routing_ClusterDragonfly;
 165       break;
 166     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 167       zone.routing = A_surfxml_AS_routing_ClusterFatTree;
 168       break;
 169     default:
 170       zone.routing = A_surfxml_AS_routing_Cluster;
 171       break;
 172   }
 173   sg_platf_new_Zone_begin(&zone);
 174   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 175   current_as->parse_specific_arguments(cluster);
 176   if (cluster->properties != nullptr)
 177     for (auto const& elm : *cluster->properties)
 178       current_as->get_iface()->set_property(elm.first, elm.second);
 179
 180   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 181     current_as->num_links_per_node_++;
 182     current_as->has_loopback_ = true;
 183   }
 184
 185   if(cluster->limiter_link > 0){
 186     current_as->num_links_per_node_++;
 187     current_as->has_limiter_ = true;
 188   }
 189
 190   for (int const& i : *cluster->radicals) {
 191     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 192     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 193
 194     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id.c_str(), cluster->speeds.front());
 195
 196     simgrid::kernel::routing::HostCreationArgs host;
 197     host.id = host_id;
 198     if ((cluster->properties != nullptr) && (not cluster->properties->empty())) {
 199       host.properties = new std::unordered_map<std::string, std::string>();
 200
 201       for (auto const& elm : *cluster->properties)
 202         host.properties->insert({elm.first, elm.second});
 203     }
 204
 205     host.speed_per_pstate = cluster->speeds;
 206     host.pstate = 0;
 207     host.core_amount = cluster->core_amount;
 208     host.coord = "";
 209     sg_platf_new_host(&host);
 210     XBT_DEBUG("</host>");
 211
 212     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 213
 214     // All links are saved in a matrix;
 215     // every row describes a single node; every node may have multiple links.
 216     // the first column may store a link from x to x if p_has_loopback is set
 217     // the second column may store a limiter link if p_has_limiter is set
 218     // other columns are to store one or more link for the node
 219
 220     //add a loopback link
 221     const simgrid::s4u::Link* linkUp   = nullptr;
 222     const simgrid::s4u::Link* linkDown = nullptr;
 223     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 224       std::string tmp_link = link_id + "_loopback";
 225       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
 226
 227       simgrid::kernel::routing::LinkCreationArgs link;
 228       link.id        = tmp_link;
 229       link.bandwidths.push_back(cluster->loopback_bw);
 230       link.latency   = cluster->loopback_lat;
 231       link.policy    = simgrid::s4u::Link::SharingPolicy::FATPIPE;
 232       sg_platf_new_link(&link);
 233       linkUp   = simgrid::s4u::Link::by_name_or_null(tmp_link);
 234       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 235
 236       auto* as_cluster = static_cast<ClusterZone*>(current_as);
 237       as_cluster->private_links_.insert({as_cluster->node_pos(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 238     }
 239
 240     //add a limiter link (shared link to account for maximal bandwidth of the node)
 241     linkUp   = nullptr;
 242     linkDown = nullptr;
 243     if(cluster->limiter_link > 0){
 244       std::string tmp_link = std::string(link_id) + "_limiter";
 245       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
 246
 247       simgrid::kernel::routing::LinkCreationArgs link;
 248       link.id        = tmp_link;
 249       link.bandwidths.push_back(cluster->limiter_link);
 250       link.latency = 0;
 251       link.policy    = simgrid::s4u::Link::SharingPolicy::SHARED;
 252       sg_platf_new_link(&link);
 253       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 254       linkUp   = linkDown;
 255       current_as->private_links_.insert(
 256           {current_as->node_pos_with_loopback(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 257     }
 258
 259     //call the cluster function that adds the others links
 260     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
 261       static_cast<FatTreeZone*>(current_as)->add_processing_node(i);
 262     } else {
 263       current_as->create_links_for_node(cluster, i, rankId, current_as->node_pos_with_loopback_limiter(rankId));
 264     }
 265     rankId++;
 266   }
 267   delete cluster->properties;
 268
 269   // Add a router.
 270   XBT_DEBUG(" ");
 271   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 272   if (cluster->router_id.empty()) {
 273     std::string newid   = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 274     current_as->router_ = sg_platf_new_router(newid, NULL);
 275   } else {
 276     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 277   }
 278
 279   //Make the backbone
 280   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 281     simgrid::kernel::routing::LinkCreationArgs link;
 282     link.id        = std::string(cluster->id)+ "_backbone";
 283     link.bandwidths.push_back(cluster->bb_bw);
 284     link.latency   = cluster->bb_lat;
 285     link.policy    = cluster->bb_sharing_policy;
 286
 287     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 288     sg_platf_new_link(&link);
 289
 290     routing_cluster_add_backbone(simgrid::s4u::Link::by_name(link.id)->get_impl());
 291   }
 292
 293   XBT_DEBUG("</AS>");
 294   sg_platf_new_Zone_seal();
 295
 296   simgrid::kernel::routing::on_cluster_creation(*cluster);
 297   delete cluster->radicals;
 298 }
 299
 300 void routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl* bb)
 301 {
 302   simgrid::kernel::routing::ClusterZone* cluster =
 303       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 304
 305   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 306   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->get_cname());
 307
 308   cluster->backbone_ = bb;
 309   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->get_cname());
 310 }
 311
 312 void sg_platf_new_cabinet(const simgrid::kernel::routing::CabinetCreationArgs* cabinet)
 313 {
 314   for (int const& radical : *cabinet->radicals) {
 315     std::string hostname = cabinet->prefix + std::to_string(radical) + cabinet->suffix;
 316     simgrid::kernel::routing::HostCreationArgs host;
 317     host.pstate           = 0;
 318     host.core_amount      = 1;
 319     host.id               = hostname;
 320     host.speed_per_pstate.push_back(cabinet->speed);
 321     sg_platf_new_host(&host);
 322
 323     simgrid::kernel::routing::LinkCreationArgs link;
 324     link.policy    = simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX;
 325     link.latency   = cabinet->lat;
 326     link.bandwidths.push_back(cabinet->bw);
 327     link.id        = "link_" + hostname;
 328     sg_platf_new_link(&link);
 329
 330     simgrid::kernel::routing::HostLinkCreationArgs host_link;
 331     host_link.id        = hostname;
 332     host_link.link_up   = std::string("link_") + hostname + "_UP";
 333     host_link.link_down = std::string("link_") + hostname + "_DOWN";
 334     sg_platf_new_hostlink(&host_link);
 335   }
 336   delete cabinet->radicals;
 337 }
 338
 339 simgrid::kernel::resource::DiskImpl* sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
 340 {
 341   simgrid::kernel::resource::DiskImpl* d = surf_disk_model->createDisk(disk->id, disk->read_bw, disk->write_bw);
 342   if (disk->properties) {
 343     d->set_properties(*disk->properties);
 344     delete disk->properties;
 345   }
 346   simgrid::s4u::Disk::on_creation(*d->get_iface());
 347   return d;
 348 }
 349
 350 void sg_platf_new_storage(simgrid::kernel::routing::StorageCreationArgs* storage)
 351 {
 352   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
 353              "Refusing to add a second storage named \"%s\"", storage->id.c_str());
 354
 355   const simgrid::kernel::resource::StorageType* stype;
 356   auto st = storage_types.find(storage->type_id);
 357   if (st != storage_types.end()) {
 358     stype = st->second;
 359   } else {
 360     xbt_die("No storage type '%s'", storage->type_id.c_str());
 361   }
 362
 363   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id.c_str(),
 364             storage->type_id.c_str(), storage->content.c_str());
 365
 366   known_storages.push_back(storage->id);
 367
 368   // if storage content is not specified use the content of storage_type if any
 369   if (storage->content.empty() && not stype->content.empty()) {
 370     storage->content = stype->content;
 371     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id.c_str(),
 372               stype->id.c_str());
 373   }
 374
 375   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 376             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
 377             "\n\t\tproperties '%p''\n",
 378             storage->id.c_str(), stype->model.c_str(), stype->id.c_str(), storage->content.c_str(),
 379             storage->properties);
 380
 381   auto s = surf_storage_model->createStorage(storage->id, stype->id, storage->content, storage->attach);
 382
 383   if (storage->properties) {
 384     s->set_properties(*storage->properties);
 385     delete storage->properties;
 386   }
 387 }
 388
 389 void sg_platf_new_storage_type(const simgrid::kernel::routing::StorageTypeCreationArgs* storage_type)
 390 {
 391   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
 392              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id.c_str());
 393
 394   simgrid::kernel::resource::StorageType* stype = new simgrid::kernel::resource::StorageType(
 395       storage_type->id, storage_type->model, storage_type->content, storage_type->properties,
 396       storage_type->model_properties, storage_type->size);
 397
 398   XBT_DEBUG("Create a storage type id '%s' with model '%s', content '%s'", storage_type->id.c_str(),
 399             storage_type->model.c_str(), storage_type->content.c_str());
 400
 401   storage_types[storage_type->id] = stype;
 402 }
 403
 404 void sg_platf_new_mount(simgrid::kernel::routing::MountCreationArgs* mount)
 405 {
 406   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
 407              "Cannot mount non-existent disk \"%s\"", mount->storageId.c_str());
 408
 409   XBT_DEBUG("Mount '%s' on '%s'", mount->storageId.c_str(), mount->name.c_str());
 410
 411   if (mount_list.empty())
 412     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
 413   mount_list.insert({mount->name, simgrid::s4u::Engine::get_instance()->storage_by_name(mount->storageId)->get_impl()});
 414 }
 415
 416 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 417 {
 418   routing_get_current()->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 419                                    route->symmetrical);
 420 }
 421
 422 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
 423 {
 424   routing_get_current()->add_bypass_route(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
 425                                           bypassRoute->link_list, bypassRoute->symmetrical);
 426 }
 427
 428 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 429 {
 430   sg_host_t host = sg_host_by_name(actor->host);
 431   if (not host) {
 432     // The requested host does not exist. Do a nice message to the user
 433     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 434                       "' does not exist\nExisting hosts: '";
 435
 436     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::get_instance()->get_all_hosts();
 437
 438     for (auto const& some_host : list) {
 439       msg += some_host->get_name();
 440       msg += "', '";
 441       if (msg.length() > 1024) {
 442         msg.pop_back(); // remove trailing quote
 443         msg += "...(list truncated)......";
 444         break;
 445       }
 446     }
 447     xbt_die("%s", msg.c_str());
 448   }
 449   const simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(actor->function);
 450   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 451
 452   double start_time = actor->start_time;
 453   double kill_time  = actor->kill_time;
 454   bool auto_restart = actor->restart_on_failure;
 455
 456   std::string actor_name     = actor->args[0];
 457   simgrid::simix::ActorCode code = factory(std::move(actor->args));
 458   std::shared_ptr<std::unordered_map<std::string, std::string>> properties(actor->properties);
 459
 460   simgrid::kernel::actor::ProcessArg* arg =
 461       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 462
 463   host->pimpl_->add_actor_at_boot(arg);
 464
 465   if (start_time > SIMIX_get_clock()) {
 466     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 467
 468     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 469     simgrid::simix::Timer::set(start_time, [arg, auto_restart]() {
 470       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(
 471           arg->name.c_str(), std::move(arg->code), arg->data, arg->host, arg->properties.get(), nullptr);
 472       if (arg->kill_time >= 0)
 473         new_actor->set_kill_time(arg->kill_time);
 474       if (auto_restart)
 475         new_actor->set_auto_restart(auto_restart);
 476       delete arg;
 477     });
 478   } else {                      // start_time <= SIMIX_get_clock()
 479     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->get_cname());
 480
 481     try {
 482       simgrid::kernel::actor::ActorImplPtr new_actor = nullptr;
 483       new_actor = simgrid::kernel::actor::ActorImpl::create(arg->name.c_str(), std::move(code), nullptr, host,
 484                                                             arg->properties.get(), nullptr);
 485       /* The actor creation will fail if the host is currently dead, but that's fine */
 486       if (arg->kill_time >= 0)
 487         new_actor->set_kill_time(arg->kill_time);
 488       if (auto_restart)
 489         new_actor->set_auto_restart(auto_restart);
 490     } catch (simgrid::HostFailureException const&) {
 491       XBT_WARN("Deployment includes some initially turned off Hosts ... nevermind.");
 492     }
 493   }
 494 }
 495
 496 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* peer)
 497 {
 498   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 499   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 500
 501   std::vector<double> speed_per_pstate;
 502   speed_per_pstate.push_back(peer->speed);
 503   simgrid::s4u::Host* host = as->create_host(peer->id, speed_per_pstate, 1, nullptr);
 504
 505   as->set_peer_link(host->get_netpoint(), peer->bw_in, peer->bw_out, peer->coord);
 506
 507   /* Change from the defaults */
 508   if (peer->state_trace)
 509     host->set_state_profile(peer->state_trace);
 510   if (peer->speed_trace)
 511     host->set_speed_profile(peer->speed_trace);
 512 }
 513
 514 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 515 static void surf_config_models_setup()
 516 {
 517   std::string host_model_name    = simgrid::config::get_value<std::string>("host/model");
 518   std::string network_model_name = simgrid::config::get_value<std::string>("network/model");
 519   std::string cpu_model_name     = simgrid::config::get_value<std::string>("cpu/model");
 520   std::string disk_model_name    = simgrid::config::get_value<std::string>("disk/model");
 521   std::string storage_model_name = simgrid::config::get_value<std::string>("storage/model");
 522
 523   /* The compound host model is needed when using non-default net/cpu models */
 524   if ((not simgrid::config::is_default("network/model") || not simgrid::config::is_default("cpu/model")) &&
 525       simgrid::config::is_default("host/model")) {
 526     host_model_name = "compound";
 527     simgrid::config::set_value("host/model", host_model_name);
 528   }
 529
 530   XBT_DEBUG("host model: %s", host_model_name.c_str());
 531   if (host_model_name == "compound") {
 532     xbt_assert(not cpu_model_name.empty(), "Set a cpu model to use with the 'compound' host model");
 533     xbt_assert(not network_model_name.empty(), "Set a network model to use with the 'compound' host model");
 534
 535     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 536     surf_cpu_model_description[cpu_id].model_init_preparse();
 537
 538     int network_id = find_model_description(surf_network_model_description, network_model_name);
 539     surf_network_model_description[network_id].model_init_preparse();
 540   }
 541
 542   XBT_DEBUG("Call host_model_init");
 543   int host_id = find_model_description(surf_host_model_description, host_model_name);
 544   surf_host_model_description[host_id].model_init_preparse();
 545
 546   XBT_DEBUG("Call vm_model_init");
 547   surf_vm_model_init_HL13();
 548
 549   XBT_DEBUG("Call disk_model_init");
 550   int disk_id = find_model_description(surf_disk_model_description, disk_model_name);
 551   surf_disk_model_description[disk_id].model_init_preparse();
 552
 553   XBT_DEBUG("Call storage_model_init");
 554   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 555   surf_storage_model_description[storage_id].model_init_preparse();
 556 }
 557
 558 /**
 559  * @brief Add a Zone to the platform
 560  *
 561  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 562  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
 563  *
 564  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 565  *
 566  * @param zone the parameters defining the Zone to build.
 567  */
 568 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_Zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 569 {
 570   if (not surf_parse_models_setup_already_called) {
 571     simgrid::s4u::Engine::on_platform_creation();
 572
 573     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 574      * That is, after the last <config> tag, if any, and before the first of cluster|peer|zone|trace|trace_connect
 575      *
 576      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 577      * (FIXME: check it out by creating a file beginning with one of these tags)
 578      * but cluster and peer come down to zone creations, so putting this verification here is correct.
 579      */
 580     surf_parse_models_setup_already_called = 1;
 581     surf_config_models_setup();
 582   }
 583
 584   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 585                             * any further config now that we created some real content */
 586
 587   /* search the routing model */
 588   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
 589   simgrid::kernel::resource::NetworkModel* netmodel =
 590       current_routing == nullptr ? surf_network_model : current_routing->network_model_;
 591   switch (zone->routing) {
 592     case A_surfxml_AS_routing_Cluster:
 593       new_zone = new simgrid::kernel::routing::ClusterZone(current_routing, zone->id, netmodel);
 594       break;
 595     case A_surfxml_AS_routing_ClusterDragonfly:
 596       new_zone = new simgrid::kernel::routing::DragonflyZone(current_routing, zone->id, netmodel);
 597       break;
 598     case A_surfxml_AS_routing_ClusterTorus:
 599       new_zone = new simgrid::kernel::routing::TorusZone(current_routing, zone->id, netmodel);
 600       break;
 601     case A_surfxml_AS_routing_ClusterFatTree:
 602       new_zone = new simgrid::kernel::routing::FatTreeZone(current_routing, zone->id, netmodel);
 603       break;
 604     case A_surfxml_AS_routing_Dijkstra:
 605       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, false);
 606       break;
 607     case A_surfxml_AS_routing_DijkstraCache:
 608       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, true);
 609       break;
 610     case A_surfxml_AS_routing_Floyd:
 611       new_zone = new simgrid::kernel::routing::FloydZone(current_routing, zone->id, netmodel);
 612       break;
 613     case A_surfxml_AS_routing_Full:
 614       new_zone = new simgrid::kernel::routing::FullZone(current_routing, zone->id, netmodel);
 615       break;
 616     case A_surfxml_AS_routing_None:
 617       new_zone = new simgrid::kernel::routing::EmptyZone(current_routing, zone->id, netmodel);
 618       break;
 619     case A_surfxml_AS_routing_Vivaldi:
 620       new_zone = new simgrid::kernel::routing::VivaldiZone(current_routing, zone->id, netmodel);
 621       break;
 622     default:
 623       xbt_die("Not a valid model!");
 624       break;
 625   }
 626
 627   if (current_routing == nullptr) { /* it is the first one */
 628     simgrid::s4u::Engine::get_instance()->set_netzone_root(new_zone->get_iface());
 629   } else {
 630     /* set the father behavior */
 631     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 632       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 633     /* add to the sons dictionary */
 634     current_routing->get_children()->push_back(new_zone);
 635   }
 636
 637   /* set the new current component of the tree */
 638   current_routing = new_zone;
 639   simgrid::s4u::NetZone::on_creation(*new_zone->get_iface()); // notify the signal
 640
 641   return new_zone;
 642 }
 643
 644 void sg_platf_new_Zone_set_properties(const std::unordered_map<std::string, std::string>* props)
 645 {
 646   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
 647
 648   if (props)
 649     current_routing->set_properties(*props);
 650 }
 651
 652 /**
 653  * @brief Specify that the description of the current AS is finished
 654  *
 655  * Once you've declared all the content of your AS, you have to seal
 656  * it with this call. Your AS is not usable until you call this function.
 657  */
 658 void sg_platf_new_Zone_seal()
 659 {
 660   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 661   current_routing->seal();
 662   simgrid::s4u::NetZone::on_seal(*current_routing->get_iface());
 663   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->get_father());
 664 }
 665
 666 /** @brief Add a link connecting a host to the rest of its AS (which must be cluster or vivaldi) */
 667 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 668 {
 669   simgrid::kernel::routing::NetPoint* netpoint = simgrid::s4u::Host::by_name(hostlink->id)->get_netpoint();
 670   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 671   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 672              "Only hosts from Cluster and Vivaldi ASes can get a host_link.");
 673
 674   const simgrid::s4u::Link* linkUp   = simgrid::s4u::Link::by_name_or_null(hostlink->link_up);
 675   const simgrid::s4u::Link* linkDown = simgrid::s4u::Link::by_name_or_null(hostlink->link_down);
 676
 677   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 678   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 679
 680   auto* as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 681
 682   if (as_cluster->private_links_.find(netpoint->id()) != as_cluster->private_links_.end())
 683     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
 684
 685   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->get_cname(), netpoint->id());
 686   as_cluster->private_links_.insert({netpoint->id(), {linkUp->get_impl(), linkDown->get_impl()}});
 687 }
 688
 689 void sg_platf_new_trace(simgrid::kernel::routing::ProfileCreationArgs* profile)
 690 {
 691   simgrid::kernel::profile::Profile* mgr_profile;
 692   if (not profile->file.empty()) {
 693     mgr_profile = simgrid::kernel::profile::Profile::from_file(profile->file);
 694   } else {
 695     xbt_assert(not profile->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 696                profile->id.c_str());
 697     mgr_profile = simgrid::kernel::profile::Profile::from_string(profile->id, profile->pc_data, profile->periodicity);
 698   }
 699   traces_set_list.insert({profile->id, mgr_profile});
 700 }