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(const 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_->set_storages(mount_list);
  83   mount_list.clear();
  84
  85   host->pimpl_->set_disks(args->disks, host);
  86
  87   /* Change from the defaults */
  88   if (args->state_trace)
  89     host->set_state_profile(args->state_trace);
  90   if (args->speed_trace)
  91     host->set_speed_profile(args->speed_trace);
  92   if (args->pstate != 0)
  93     host->set_pstate(args->pstate);
  94   if (not args->coord.empty())
  95     new simgrid::kernel::routing::vivaldi::Coords(host->get_netpoint(), args->coord);
  96 }
  97
  98 /** @brief Add a "router" to the network element list */
  99 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const char* coords)
 100 {
 101   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 102     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 103   xbt_assert(nullptr == simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(name),
 104              "Refusing to create a router named '%s': this name already describes a node.", name.c_str());
 105
 106   simgrid::kernel::routing::NetPoint* netpoint =
 107       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
 108   XBT_DEBUG("Router '%s' has the id %u", netpoint->get_cname(), netpoint->id());
 109
 110   if (coords && strcmp(coords, ""))
 111     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 112
 113
 114   return netpoint;
 115 }
 116
 117 static void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* link, const std::string& link_name)
 118 {
 119   static double last_warned_latency = sg_surf_precision;
 120   if (link->latency != 0.0 && link->latency < last_warned_latency) {
 121     XBT_WARN("Latency for link %s is smaller than surf/precision (%g < %g)."
 122              " For more accuracy, consider setting \"--cfg=surf/precision:%g\".",
 123              link_name.c_str(), link->latency, sg_surf_precision, link->latency);
 124     last_warned_latency = link->latency;
 125   }
 126   simgrid::kernel::resource::LinkImpl* l =
 127       surf_network_model->create_link(link_name, link->bandwidths, link->latency, link->policy);
 128
 129   if (link->properties) {
 130     l->set_properties(*link->properties);
 131   }
 132
 133   if (link->latency_trace)
 134     l->set_latency_profile(link->latency_trace);
 135   if (link->bandwidth_trace)
 136     l->set_bandwidth_profile(link->bandwidth_trace);
 137   if (link->state_trace)
 138     l->set_state_profile(link->state_trace);
 139 }
 140
 141 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* link)
 142 {
 143   if (link->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
 144     sg_platf_new_link(link, link->id + "_UP");
 145     sg_platf_new_link(link, link->id + "_DOWN");
 146   } else {
 147     sg_platf_new_link(link, link->id);
 148   }
 149   delete link->properties;
 150 }
 151
 152 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
 153 {
 154   using simgrid::kernel::routing::ClusterZone;
 155   using simgrid::kernel::routing::DragonflyZone;
 156   using simgrid::kernel::routing::FatTreeZone;
 157   using simgrid::kernel::routing::TorusZone;
 158
 159   int rankId=0;
 160
 161   // What an inventive way of initializing the AS that I have as ancestor :-(
 162   simgrid::kernel::routing::ZoneCreationArgs zone;
 163   zone.id = cluster->id;
 164   switch (cluster->topology) {
 165     case simgrid::kernel::routing::ClusterTopology::TORUS:
 166       zone.routing = A_surfxml_AS_routing_ClusterTorus;
 167       break;
 168     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
 169       zone.routing = A_surfxml_AS_routing_ClusterDragonfly;
 170       break;
 171     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
 172       zone.routing = A_surfxml_AS_routing_ClusterFatTree;
 173       break;
 174     default:
 175       zone.routing = A_surfxml_AS_routing_Cluster;
 176       break;
 177   }
 178   sg_platf_new_Zone_begin(&zone);
 179   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 180   current_as->parse_specific_arguments(cluster);
 181   if (cluster->properties != nullptr)
 182     for (auto const& elm : *cluster->properties)
 183       current_as->get_iface()->set_property(elm.first, elm.second);
 184
 185   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 186     current_as->num_links_per_node_++;
 187     current_as->has_loopback_ = true;
 188   }
 189
 190   if(cluster->limiter_link > 0){
 191     current_as->num_links_per_node_++;
 192     current_as->has_limiter_ = true;
 193   }
 194
 195   for (int const& i : *cluster->radicals) {
 196     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
 197     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
 198
 199     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id.c_str(), cluster->speeds.front());
 200
 201     simgrid::kernel::routing::HostCreationArgs host;
 202     host.id = host_id;
 203     if ((cluster->properties != nullptr) && (not cluster->properties->empty())) {
 204       host.properties = new std::unordered_map<std::string, std::string>();
 205
 206       for (auto const& elm : *cluster->properties)
 207         host.properties->insert({elm.first, elm.second});
 208     }
 209
 210     host.speed_per_pstate = cluster->speeds;
 211     host.pstate = 0;
 212     host.core_amount = cluster->core_amount;
 213     host.coord = "";
 214     sg_platf_new_host(&host);
 215     XBT_DEBUG("</host>");
 216
 217     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
 218
 219     // All links are saved in a matrix;
 220     // every row describes a single node; every node may have multiple links.
 221     // the first column may store a link from x to x if p_has_loopback is set
 222     // the second column may store a limiter link if p_has_limiter is set
 223     // other columns are to store one or more link for the node
 224
 225     //add a loopback link
 226     const simgrid::s4u::Link* linkUp   = nullptr;
 227     const simgrid::s4u::Link* linkDown = nullptr;
 228     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 229       std::string tmp_link = link_id + "_loopback";
 230       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
 231
 232       simgrid::kernel::routing::LinkCreationArgs link;
 233       link.id        = tmp_link;
 234       link.bandwidths.push_back(cluster->loopback_bw);
 235       link.latency   = cluster->loopback_lat;
 236       link.policy    = simgrid::s4u::Link::SharingPolicy::FATPIPE;
 237       sg_platf_new_link(&link);
 238       linkUp   = simgrid::s4u::Link::by_name_or_null(tmp_link);
 239       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 240
 241       auto* as_cluster = static_cast<ClusterZone*>(current_as);
 242       as_cluster->private_links_.insert({as_cluster->node_pos(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 243     }
 244
 245     //add a limiter link (shared link to account for maximal bandwidth of the node)
 246     linkUp   = nullptr;
 247     linkDown = nullptr;
 248     if(cluster->limiter_link > 0){
 249       std::string tmp_link = std::string(link_id) + "_limiter";
 250       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
 251
 252       simgrid::kernel::routing::LinkCreationArgs link;
 253       link.id        = tmp_link;
 254       link.bandwidths.push_back(cluster->limiter_link);
 255       link.latency = 0;
 256       link.policy    = simgrid::s4u::Link::SharingPolicy::SHARED;
 257       sg_platf_new_link(&link);
 258       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
 259       linkUp   = linkDown;
 260       current_as->private_links_.insert(
 261           {current_as->node_pos_with_loopback(rankId), {linkUp->get_impl(), linkDown->get_impl()}});
 262     }
 263
 264     //call the cluster function that adds the others links
 265     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
 266       static_cast<FatTreeZone*>(current_as)->add_processing_node(i);
 267     } else {
 268       current_as->create_links_for_node(cluster, i, rankId, current_as->node_pos_with_loopback_limiter(rankId));
 269     }
 270     rankId++;
 271   }
 272   delete cluster->properties;
 273
 274   // Add a router.
 275   XBT_DEBUG(" ");
 276   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
 277   if (cluster->router_id.empty()) {
 278     std::string newid   = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
 279     current_as->router_ = sg_platf_new_router(newid, NULL);
 280   } else {
 281     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 282   }
 283
 284   //Make the backbone
 285   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 286     simgrid::kernel::routing::LinkCreationArgs link;
 287     link.id        = std::string(cluster->id)+ "_backbone";
 288     link.bandwidths.push_back(cluster->bb_bw);
 289     link.latency   = cluster->bb_lat;
 290     link.policy    = cluster->bb_sharing_policy;
 291
 292     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 293     sg_platf_new_link(&link);
 294
 295     routing_cluster_add_backbone(simgrid::s4u::Link::by_name(link.id)->get_impl());
 296   }
 297
 298   XBT_DEBUG("</AS>");
 299   sg_platf_new_Zone_seal();
 300
 301   simgrid::kernel::routing::on_cluster_creation(*cluster);
 302   delete cluster->radicals;
 303 }
 304
 305 void routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl* bb)
 306 {
 307   simgrid::kernel::routing::ClusterZone* cluster =
 308       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 309
 310   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 311   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->get_cname());
 312
 313   cluster->backbone_ = bb;
 314   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->get_cname());
 315 }
 316
 317 void sg_platf_new_cabinet(const simgrid::kernel::routing::CabinetCreationArgs* cabinet)
 318 {
 319   for (int const& radical : *cabinet->radicals) {
 320     std::string hostname = cabinet->prefix + std::to_string(radical) + cabinet->suffix;
 321     simgrid::kernel::routing::HostCreationArgs host;
 322     host.pstate           = 0;
 323     host.core_amount      = 1;
 324     host.id               = hostname;
 325     host.speed_per_pstate.push_back(cabinet->speed);
 326     sg_platf_new_host(&host);
 327
 328     simgrid::kernel::routing::LinkCreationArgs link;
 329     link.policy    = simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX;
 330     link.latency   = cabinet->lat;
 331     link.bandwidths.push_back(cabinet->bw);
 332     link.id        = "link_" + hostname;
 333     sg_platf_new_link(&link);
 334
 335     simgrid::kernel::routing::HostLinkCreationArgs host_link;
 336     host_link.id        = hostname;
 337     host_link.link_up   = std::string("link_") + hostname + "_UP";
 338     host_link.link_down = std::string("link_") + hostname + "_DOWN";
 339     sg_platf_new_hostlink(&host_link);
 340   }
 341   delete cabinet->radicals;
 342 }
 343
 344 simgrid::kernel::resource::DiskImpl* sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
 345 {
 346   simgrid::kernel::resource::DiskImpl* d = surf_disk_model->createDisk(disk->id, disk->read_bw, disk->write_bw);
 347   if (disk->properties) {
 348     d->set_properties(*disk->properties);
 349     delete disk->properties;
 350   }
 351   simgrid::s4u::Disk::on_creation(*d->get_iface());
 352   return d;
 353 }
 354
 355 void sg_platf_new_storage(simgrid::kernel::routing::StorageCreationArgs* storage)
 356 {
 357   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
 358              "Refusing to add a second storage named \"%s\"", storage->id.c_str());
 359
 360   const simgrid::kernel::resource::StorageType* stype;
 361   auto st = storage_types.find(storage->type_id);
 362   if (st != storage_types.end()) {
 363     stype = st->second;
 364   } else {
 365     xbt_die("No storage type '%s'", storage->type_id.c_str());
 366   }
 367
 368   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id.c_str(),
 369             storage->type_id.c_str(), storage->content.c_str());
 370
 371   known_storages.push_back(storage->id);
 372
 373   // if storage content is not specified use the content of storage_type if any
 374   if (storage->content.empty() && not stype->content.empty()) {
 375     storage->content = stype->content;
 376     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id.c_str(),
 377               stype->id.c_str());
 378   }
 379
 380   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 381             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
 382             "\n\t\tproperties '%p''\n",
 383             storage->id.c_str(), stype->model.c_str(), stype->id.c_str(), storage->content.c_str(),
 384             storage->properties);
 385
 386   auto s = surf_storage_model->createStorage(storage->id, stype->id, storage->content, storage->attach);
 387
 388   if (storage->properties) {
 389     s->set_properties(*storage->properties);
 390     delete storage->properties;
 391   }
 392 }
 393
 394 void sg_platf_new_storage_type(const simgrid::kernel::routing::StorageTypeCreationArgs* storage_type)
 395 {
 396   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
 397              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id.c_str());
 398
 399   simgrid::kernel::resource::StorageType* stype = new simgrid::kernel::resource::StorageType(
 400       storage_type->id, storage_type->model, storage_type->content, storage_type->properties,
 401       storage_type->model_properties, storage_type->size);
 402
 403   XBT_DEBUG("Create a storage type id '%s' with model '%s', content '%s'", storage_type->id.c_str(),
 404             storage_type->model.c_str(), storage_type->content.c_str());
 405
 406   storage_types[storage_type->id] = stype;
 407 }
 408
 409 void sg_platf_new_mount(simgrid::kernel::routing::MountCreationArgs* mount)
 410 {
 411   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
 412              "Cannot mount non-existent disk \"%s\"", mount->storageId.c_str());
 413
 414   XBT_DEBUG("Mount '%s' on '%s'", mount->storageId.c_str(), mount->name.c_str());
 415
 416   if (mount_list.empty())
 417     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
 418   mount_list.insert({mount->name, simgrid::s4u::Engine::get_instance()->storage_by_name(mount->storageId)->get_impl()});
 419 }
 420
 421 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
 422 {
 423   routing_get_current()->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
 424                                    route->symmetrical);
 425 }
 426
 427 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
 428 {
 429   routing_get_current()->add_bypass_route(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
 430                                           bypassRoute->link_list, bypassRoute->symmetrical);
 431 }
 432
 433 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
 434 {
 435   sg_host_t host = sg_host_by_name(actor->host);
 436   if (not host) {
 437     // The requested host does not exist. Do a nice message to the user
 438     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
 439                       "' does not exist\nExisting hosts: '";
 440
 441     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::get_instance()->get_all_hosts();
 442
 443     for (auto const& some_host : list) {
 444       msg += some_host->get_name();
 445       msg += "', '";
 446       if (msg.length() > 1024) {
 447         msg.pop_back(); // remove trailing quote
 448         msg += "...(list truncated)......";
 449         break;
 450       }
 451     }
 452     xbt_die("%s", msg.c_str());
 453   }
 454   const simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(actor->function);
 455   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
 456
 457   double start_time = actor->start_time;
 458   double kill_time  = actor->kill_time;
 459   bool auto_restart = actor->restart_on_failure;
 460
 461   std::string actor_name     = actor->args[0];
 462   simgrid::simix::ActorCode code = factory(std::move(actor->args));
 463   std::shared_ptr<std::unordered_map<std::string, std::string>> properties(actor->properties);
 464
 465   simgrid::kernel::actor::ProcessArg* arg =
 466       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 467
 468   host->pimpl_->add_actor_at_boot(arg);
 469
 470   if (start_time > SIMIX_get_clock()) {
 471     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
 472
 473     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
 474     simgrid::simix::Timer::set(start_time, [arg, auto_restart]() {
 475       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(
 476           arg->name.c_str(), std::move(arg->code), arg->data, arg->host, arg->properties.get(), nullptr);
 477       if (arg->kill_time >= 0)
 478         new_actor->set_kill_time(arg->kill_time);
 479       if (auto_restart)
 480         new_actor->set_auto_restart(auto_restart);
 481       delete arg;
 482     });
 483   } else {                      // start_time <= SIMIX_get_clock()
 484     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->get_cname());
 485
 486     try {
 487       simgrid::kernel::actor::ActorImplPtr new_actor = nullptr;
 488       new_actor = simgrid::kernel::actor::ActorImpl::create(arg->name.c_str(), std::move(code), nullptr, host,
 489                                                             arg->properties.get(), nullptr);
 490       /* The actor creation will fail if the host is currently dead, but that's fine */
 491       if (arg->kill_time >= 0)
 492         new_actor->set_kill_time(arg->kill_time);
 493       if (auto_restart)
 494         new_actor->set_auto_restart(auto_restart);
 495     } catch (simgrid::HostFailureException const&) {
 496       XBT_WARN("Deployment includes some initially turned off Hosts ... nevermind.");
 497     }
 498   }
 499 }
 500
 501 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* peer)
 502 {
 503   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 504   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 505
 506   std::vector<double> speed_per_pstate;
 507   speed_per_pstate.push_back(peer->speed);
 508   simgrid::s4u::Host* host = as->create_host(peer->id, speed_per_pstate, 1, nullptr);
 509
 510   as->set_peer_link(host->get_netpoint(), peer->bw_in, peer->bw_out, peer->coord);
 511
 512   /* Change from the defaults */
 513   if (peer->state_trace)
 514     host->set_state_profile(peer->state_trace);
 515   if (peer->speed_trace)
 516     host->set_speed_profile(peer->speed_trace);
 517 }
 518
 519 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 520 static void surf_config_models_setup()
 521 {
 522   std::string host_model_name    = simgrid::config::get_value<std::string>("host/model");
 523   std::string network_model_name = simgrid::config::get_value<std::string>("network/model");
 524   std::string cpu_model_name     = simgrid::config::get_value<std::string>("cpu/model");
 525   std::string disk_model_name    = simgrid::config::get_value<std::string>("disk/model");
 526   std::string storage_model_name = simgrid::config::get_value<std::string>("storage/model");
 527
 528   /* The compound host model is needed when using non-default net/cpu models */
 529   if ((not simgrid::config::is_default("network/model") || not simgrid::config::is_default("cpu/model")) &&
 530       simgrid::config::is_default("host/model")) {
 531     host_model_name = "compound";
 532     simgrid::config::set_value("host/model", host_model_name);
 533   }
 534
 535   XBT_DEBUG("host model: %s", host_model_name.c_str());
 536   if (host_model_name == "compound") {
 537     xbt_assert(not cpu_model_name.empty(), "Set a cpu model to use with the 'compound' host model");
 538     xbt_assert(not network_model_name.empty(), "Set a network model to use with the 'compound' host model");
 539
 540     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 541     surf_cpu_model_description[cpu_id].model_init_preparse();
 542
 543     int network_id = find_model_description(surf_network_model_description, network_model_name);
 544     surf_network_model_description[network_id].model_init_preparse();
 545   }
 546
 547   XBT_DEBUG("Call host_model_init");
 548   int host_id = find_model_description(surf_host_model_description, host_model_name);
 549   surf_host_model_description[host_id].model_init_preparse();
 550
 551   XBT_DEBUG("Call vm_model_init");
 552   surf_vm_model_init_HL13();
 553
 554   XBT_DEBUG("Call disk_model_init");
 555   int disk_id = find_model_description(surf_disk_model_description, disk_model_name);
 556   surf_disk_model_description[disk_id].model_init_preparse();
 557
 558   XBT_DEBUG("Call storage_model_init");
 559   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 560   surf_storage_model_description[storage_id].model_init_preparse();
 561 }
 562
 563 /**
 564  * @brief Add a Zone to the platform
 565  *
 566  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
 567  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
 568  *
 569  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
 570  *
 571  * @param zone the parameters defining the Zone to build.
 572  */
 573 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_Zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
 574 {
 575   if (not surf_parse_models_setup_already_called) {
 576     simgrid::s4u::Engine::on_platform_creation();
 577
 578     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 579      * That is, after the last <config> tag, if any, and before the first of cluster|peer|zone|trace|trace_connect
 580      *
 581      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 582      * (FIXME: check it out by creating a file beginning with one of these tags)
 583      * but cluster and peer come down to zone creations, so putting this verification here is correct.
 584      */
 585     surf_parse_models_setup_already_called = 1;
 586     surf_config_models_setup();
 587   }
 588
 589   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 590                             * any further config now that we created some real content */
 591
 592   /* search the routing model */
 593   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
 594   simgrid::kernel::resource::NetworkModel* netmodel =
 595       current_routing == nullptr ? surf_network_model : current_routing->network_model_;
 596   switch (zone->routing) {
 597     case A_surfxml_AS_routing_Cluster:
 598       new_zone = new simgrid::kernel::routing::ClusterZone(current_routing, zone->id, netmodel);
 599       break;
 600     case A_surfxml_AS_routing_ClusterDragonfly:
 601       new_zone = new simgrid::kernel::routing::DragonflyZone(current_routing, zone->id, netmodel);
 602       break;
 603     case A_surfxml_AS_routing_ClusterTorus:
 604       new_zone = new simgrid::kernel::routing::TorusZone(current_routing, zone->id, netmodel);
 605       break;
 606     case A_surfxml_AS_routing_ClusterFatTree:
 607       new_zone = new simgrid::kernel::routing::FatTreeZone(current_routing, zone->id, netmodel);
 608       break;
 609     case A_surfxml_AS_routing_Dijkstra:
 610       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, false);
 611       break;
 612     case A_surfxml_AS_routing_DijkstraCache:
 613       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, netmodel, true);
 614       break;
 615     case A_surfxml_AS_routing_Floyd:
 616       new_zone = new simgrid::kernel::routing::FloydZone(current_routing, zone->id, netmodel);
 617       break;
 618     case A_surfxml_AS_routing_Full:
 619       new_zone = new simgrid::kernel::routing::FullZone(current_routing, zone->id, netmodel);
 620       break;
 621     case A_surfxml_AS_routing_None:
 622       new_zone = new simgrid::kernel::routing::EmptyZone(current_routing, zone->id, netmodel);
 623       break;
 624     case A_surfxml_AS_routing_Vivaldi:
 625       new_zone = new simgrid::kernel::routing::VivaldiZone(current_routing, zone->id, netmodel);
 626       break;
 627     default:
 628       xbt_die("Not a valid model!");
 629       break;
 630   }
 631
 632   if (current_routing == nullptr) { /* it is the first one */
 633     simgrid::s4u::Engine::get_instance()->set_netzone_root(new_zone->get_iface());
 634   } else {
 635     /* set the father behavior */
 636     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 637       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 638     /* add to the sons dictionary */
 639     current_routing->get_children()->push_back(new_zone);
 640   }
 641
 642   /* set the new current component of the tree */
 643   current_routing = new_zone;
 644   simgrid::s4u::NetZone::on_creation(*new_zone->get_iface()); // notify the signal
 645
 646   return new_zone;
 647 }
 648
 649 void sg_platf_new_Zone_set_properties(const std::unordered_map<std::string, std::string>* props)
 650 {
 651   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
 652
 653   if (props)
 654     current_routing->set_properties(*props);
 655 }
 656
 657 /**
 658  * @brief Specify that the description of the current AS is finished
 659  *
 660  * Once you've declared all the content of your AS, you have to seal
 661  * it with this call. Your AS is not usable until you call this function.
 662  */
 663 void sg_platf_new_Zone_seal()
 664 {
 665   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 666   current_routing->seal();
 667   simgrid::s4u::NetZone::on_seal(*current_routing->get_iface());
 668   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->get_father());
 669 }
 670
 671 /** @brief Add a link connecting a host to the rest of its AS (which must be cluster or vivaldi) */
 672 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
 673 {
 674   simgrid::kernel::routing::NetPoint* netpoint = simgrid::s4u::Host::by_name(hostlink->id)->get_netpoint();
 675   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
 676   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 677              "Only hosts from Cluster and Vivaldi ASes can get a host_link.");
 678
 679   const simgrid::s4u::Link* linkUp   = simgrid::s4u::Link::by_name_or_null(hostlink->link_up);
 680   const simgrid::s4u::Link* linkDown = simgrid::s4u::Link::by_name_or_null(hostlink->link_down);
 681
 682   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
 683   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
 684
 685   auto* as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 686
 687   if (as_cluster->private_links_.find(netpoint->id()) != as_cluster->private_links_.end())
 688     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
 689
 690   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->get_cname(), netpoint->id());
 691   as_cluster->private_links_.insert({netpoint->id(), {linkUp->get_impl(), linkDown->get_impl()}});
 692 }
 693
 694 void sg_platf_new_trace(simgrid::kernel::routing::ProfileCreationArgs* profile)
 695 {
 696   simgrid::kernel::profile::Profile* mgr_profile;
 697   if (not profile->file.empty()) {
 698     mgr_profile = simgrid::kernel::profile::Profile::from_file(profile->file);
 699   } else {
 700     xbt_assert(not profile->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
 701                profile->id.c_str());
 702     mgr_profile = simgrid::kernel::profile::Profile::from_string(profile->id, profile->pc_data, profile->periodicity);
 703   }
 704   traces_set_list.insert({profile->id, mgr_profile});
 705 }