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