src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2017. 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/s4u/Engine.hpp"
   7 #include "simgrid/s4u/Storage.hpp"
   8
   9 #include "src/kernel/EngineImpl.hpp"
  10 #include "src/simix/smx_private.h"
  11
  12 #include "src/include/simgrid/sg_config.h"
  13
  14 #include "src/surf/HostImpl.hpp"
  15 #include "src/surf/cpu_interface.hpp"
  16 #include "src/surf/network_interface.hpp"
  17
  18 #include "src/kernel/routing/ClusterZone.hpp"
  19 #include "src/kernel/routing/DijkstraZone.hpp"
  20 #include "src/kernel/routing/DragonflyZone.hpp"
  21 #include "src/kernel/routing/EmptyZone.hpp"
  22 #include "src/kernel/routing/FatTreeZone.hpp"
  23 #include "src/kernel/routing/FloydZone.hpp"
  24 #include "src/kernel/routing/FullZone.hpp"
  25 #include "src/kernel/routing/NetPoint.hpp"
  26 #include "src/kernel/routing/NetZoneImpl.hpp"
  27 #include "src/kernel/routing/TorusZone.hpp"
  28 #include "src/kernel/routing/VivaldiZone.hpp"
  29 #include <string>
  30 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  31
  32 XBT_PRIVATE std::map<std::string, simgrid::surf::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(sg_platf_cluster_cbarg_t)> on_cluster;
  39
  40 }
  41 }
  42
  43 // FIXME: The following duplicates the content of s4u::Host
  44 namespace simgrid {
  45 namespace s4u {
  46 extern std::map<std::string, simgrid::s4u::Host*> host_list;
  47 }
  48 }
  49
  50 static int surf_parse_models_setup_already_called = 0;
  51 std::map<std::string, storage_type_t> storage_types;
  52
  53 /** The current AS in the parsing */
  54 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  55 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  56 {
  57   return current_routing;
  58 }
  59
  60 /** Module management function: creates all internal data structures */
  61 void sg_platf_init()
  62 { /* Do nothing: just for symmetry of user code */
  63 }
  64
  65 /** Module management function: frees all internal data structures */
  66 void sg_platf_exit() {
  67   simgrid::surf::on_cluster.disconnect_all_slots();
  68   simgrid::s4u::onPlatformCreated.disconnect_all_slots();
  69
  70   /* make sure that we will reinit the models while loading the platf once reinited */
  71   surf_parse_models_setup_already_called = 0;
  72   surf_parse_lex_destroy();
  73 }
  74
  75 /** @brief Add an host to the current AS */
  76 void sg_platf_new_host(sg_platf_host_cbarg_t args)
  77 {
  78   std::unordered_map<std::string, std::string> props;
  79   if (args->properties) {
  80     xbt_dict_cursor_t cursor=nullptr;
  81     char *key;
  82     char* data;
  83     xbt_dict_foreach (args->properties, cursor, key, data)
  84       props[key] = data;
  85     xbt_dict_free(&args->properties);
  86   }
  87
  88   simgrid::s4u::Host* host =
  89       routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount, &props);
  90
  91   host->pimpl_->storage_ = mount_list;
  92   mount_list.clear();
  93
  94   /* Change from the defaults */
  95   if (args->state_trace)
  96     host->pimpl_cpu->setStateTrace(args->state_trace);
  97   if (args->speed_trace)
  98     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
  99   if (args->pstate != 0)
 100     host->pimpl_cpu->setPState(args->pstate);
 101   if (args->coord && strcmp(args->coord, ""))
 102     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netpoint, args->coord);
 103
 104 }
 105
 106 /** @brief Add a "router" to the network element list */
 107 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const char* name, const char* coords)
 108 {
 109   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
 110
 111   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 112     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 113   xbt_assert(nullptr == simgrid::s4u::Engine::instance()->netpointByNameOrNull(name),
 114              "Refusing to create a router named '%s': this name already describes a node.", name);
 115
 116   simgrid::kernel::routing::NetPoint* netpoint =
 117       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
 118   XBT_DEBUG("Router '%s' has the id %d", name, netpoint->id());
 119
 120   if (coords && strcmp(coords, ""))
 121     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 122
 123   sg_instr_new_router(name);
 124
 125   return netpoint;
 126 }
 127
 128 void sg_platf_new_link(LinkCreationArgs* link)
 129 {
 130   std::vector<std::string> names;
 131
 132   if (link->policy == SURF_LINK_FULLDUPLEX) {
 133     names.push_back(link->id+ "_UP");
 134     names.push_back(link->id+ "_DOWN");
 135   } else {
 136     names.push_back(link->id);
 137   }
 138   for (auto link_name : names) {
 139     simgrid::surf::LinkImpl* l =
 140         surf_network_model->createLink(link_name.c_str(), link->bandwidth, link->latency, link->policy);
 141
 142     if (link->properties) {
 143       xbt_dict_cursor_t cursor = nullptr;
 144       char* key;
 145       char* data;
 146       xbt_dict_foreach (link->properties, cursor, key, data)
 147         l->setProperty(key, data);
 148       xbt_dict_free(&link->properties);
 149     }
 150
 151     if (link->latency_trace)
 152       l->setLatencyTrace(link->latency_trace);
 153     if (link->bandwidth_trace)
 154       l->setBandwidthTrace(link->bandwidth_trace);
 155     if (link->state_trace)
 156       l->setStateTrace(link->state_trace);
 157   }
 158 }
 159
 160 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 161 {
 162   using simgrid::kernel::routing::ClusterZone;
 163   using simgrid::kernel::routing::DragonflyZone;
 164   using simgrid::kernel::routing::FatTreeZone;
 165   using simgrid::kernel::routing::TorusZone;
 166
 167   int rankId=0;
 168
 169   // What an inventive way of initializing the AS that I have as ancestor :-(
 170   s_sg_platf_AS_cbarg_t AS;
 171   AS.id = cluster->id;
 172   switch (cluster->topology) {
 173   case SURF_CLUSTER_TORUS:
 174     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 175     break;
 176   case SURF_CLUSTER_DRAGONFLY:
 177     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 178     break;
 179   case SURF_CLUSTER_FAT_TREE:
 180     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 181     break;
 182   default:
 183     AS.routing = A_surfxml_AS_routing_Cluster;
 184     break;
 185   }
 186   sg_platf_new_AS_begin(&AS);
 187   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 188   current_as->parse_specific_arguments(cluster);
 189
 190   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 191     current_as->linkCountPerNode_++;
 192     current_as->hasLoopback_ = 1;
 193   }
 194
 195   if(cluster->limiter_link > 0){
 196     current_as->linkCountPerNode_++;
 197     current_as->hasLimiter_ = 1;
 198   }
 199
 200   for (int i : *cluster->radicals) {
 201     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 202     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 203
 204     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speeds.front());
 205
 206     s_sg_platf_host_cbarg_t host;
 207     memset(&host, 0, sizeof(host));
 208     host.id = host_id;
 209     if ((cluster->properties != nullptr) && (not xbt_dict_is_empty(cluster->properties))) {
 210       xbt_dict_cursor_t cursor=nullptr;
 211       char *key;
 212       char* data;
 213       host.properties = xbt_dict_new_homogeneous(free);
 214
 215       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 216         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 217       }
 218     }
 219
 220     host.speed_per_pstate = cluster->speeds;
 221     host.pstate = 0;
 222     host.core_amount = cluster->core_amount;
 223     host.coord = "";
 224     sg_platf_new_host(&host);
 225     XBT_DEBUG("</host>");
 226
 227     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 228
 229     // All links are saved in a matrix;
 230     // every row describes a single node; every node may have multiple links.
 231     // the first column may store a link from x to x if p_has_loopback is set
 232     // the second column may store a limiter link if p_has_limiter is set
 233     // other columns are to store one or more link for the node
 234
 235     //add a loopback link
 236     simgrid::surf::LinkImpl* linkUp   = nullptr;
 237     simgrid::surf::LinkImpl* linkDown = nullptr;
 238     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 239       char *tmp_link = bprintf("%s_loopback", link_id);
 240       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 241
 242       LinkCreationArgs link;
 243       link.id        = tmp_link;
 244       link.bandwidth = cluster->loopback_bw;
 245       link.latency   = cluster->loopback_lat;
 246       link.policy    = SURF_LINK_FATPIPE;
 247       sg_platf_new_link(&link);
 248       linkUp   = simgrid::surf::LinkImpl::byName(tmp_link);
 249       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 250       free(tmp_link);
 251
 252       auto as_cluster = static_cast<ClusterZone*>(current_as);
 253       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 254     }
 255
 256     //add a limiter link (shared link to account for maximal bandwidth of the node)
 257     linkUp   = nullptr;
 258     linkDown = nullptr;
 259     if(cluster->limiter_link > 0){
 260       char *tmp_link = bprintf("%s_limiter", link_id);
 261       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 262
 263       LinkCreationArgs link;
 264       link.id = tmp_link;
 265       link.bandwidth = cluster->limiter_link;
 266       link.latency = 0;
 267       link.policy = SURF_LINK_SHARED;
 268       sg_platf_new_link(&link);
 269       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 270       linkUp   = linkDown;
 271       free(tmp_link);
 272       current_as->privateLinks_.insert(
 273           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 274     }
 275
 276     //call the cluster function that adds the others links
 277     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 278       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 279     } else {
 280       current_as->create_links_for_node(cluster, i, rankId,
 281           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 282     }
 283     xbt_free(link_id);
 284     xbt_free(host_id);
 285     rankId++;
 286   }
 287   xbt_dict_free(&cluster->properties);
 288
 289   // Add a router.
 290   XBT_DEBUG(" ");
 291   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 292   if (not cluster->router_id || not strcmp(cluster->router_id, "")) {
 293     char* newid         = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 294     current_as->router_ = sg_platf_new_router(newid, NULL);
 295     free(newid);
 296   } else {
 297     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 298   }
 299
 300   //Make the backbone
 301   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 302
 303     LinkCreationArgs link;
 304     link.id        = std::string(cluster->id)+ "_backbone";
 305     link.bandwidth = cluster->bb_bw;
 306     link.latency   = cluster->bb_lat;
 307     link.policy    = cluster->bb_sharing_policy;
 308
 309     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 310     sg_platf_new_link(&link);
 311
 312     routing_cluster_add_backbone(simgrid::surf::LinkImpl::byName(link.id.c_str()));
 313   }
 314
 315   XBT_DEBUG("</AS>");
 316   sg_platf_new_AS_seal();
 317
 318   simgrid::surf::on_cluster(cluster);
 319   delete cluster->radicals;
 320 }
 321
 322 void routing_cluster_add_backbone(simgrid::surf::LinkImpl* bb)
 323 {
 324   simgrid::kernel::routing::ClusterZone* cluster =
 325       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 326
 327   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 328   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 329
 330   cluster->backbone_ = bb;
 331   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 332 }
 333
 334 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 335 {
 336   for (int radical : *cabinet->radicals) {
 337     std::string hostname = std::string(cabinet->prefix) + std::to_string(radical) + std::string(cabinet->suffix);
 338     s_sg_platf_host_cbarg_t host;
 339     memset(&host, 0, sizeof(host));
 340     host.pstate           = 0;
 341     host.core_amount      = 1;
 342     host.id               = hostname.c_str();
 343     host.speed_per_pstate.push_back(cabinet->speed);
 344     sg_platf_new_host(&host);
 345
 346     LinkCreationArgs link;
 347     link.policy    = SURF_LINK_FULLDUPLEX;
 348     link.latency   = cabinet->lat;
 349     link.bandwidth = cabinet->bw;
 350     link.id        = "link_" + hostname;
 351     sg_platf_new_link(&link);
 352
 353     s_sg_platf_host_link_cbarg_t host_link;
 354     memset(&host_link, 0, sizeof(host_link));
 355     host_link.id        = hostname.c_str();
 356     host_link.link_up   = bprintf("link_%s_UP",hostname.c_str());
 357     host_link.link_down = bprintf("link_%s_DOWN",hostname.c_str());
 358     sg_platf_new_hostlink(&host_link);
 359     free((char*)host_link.link_up);
 360     free((char*)host_link.link_down);
 361   }
 362   delete cabinet->radicals;
 363 }
 364
 365 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 366 {
 367   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
 368              "Refusing to add a second storage named \"%s\"", storage->id);
 369
 370   xbt_assert(storage_types.find(storage->type_id) != storage_types.end(), "No storage type '%s'", storage->type_id);
 371   storage_type_t stype = storage_types.at(storage->type_id);
 372
 373   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id, storage->type_id,
 374             storage->content);
 375
 376   known_storages.push_back(storage->id);
 377
 378   // if storage content is not specified use the content of storage_type if any
 379   if (not strcmp(storage->content, "") && strcmp(stype->content, "")) {
 380     storage->content      = stype->content;
 381     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id, stype->type_id);
 382   }
 383
 384   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 385             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
 386             "\n\t\tproperties '%p''\n",
 387             storage->id, stype->model, stype->type_id, storage->content, storage->properties);
 388
 389   auto s = surf_storage_model->createStorage(storage->id, stype->type_id, storage->content, storage->attach);
 390
 391   if (storage->properties) {
 392     xbt_dict_cursor_t cursor = nullptr;
 393     char *key;
 394     char* data;
 395     xbt_dict_foreach (storage->properties, cursor, key, data)
 396       s->setProperty(key, data);
 397     xbt_dict_free(&storage->properties);
 398   }
 399 }
 400
 401 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type)
 402 {
 403   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
 404              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 405
 406   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 407   stype->model = xbt_strdup(storage_type->model);
 408   stype->properties = storage_type->properties;
 409   stype->content = xbt_strdup(storage_type->content);
 410   stype->type_id = xbt_strdup(storage_type->id);
 411   stype->size = storage_type->size;
 412   stype->model_properties = storage_type->model_properties;
 413
 414   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', content '%s'", stype->type_id, stype->model,
 415             storage_type->content);
 416
 417   storage_types.insert({std::string(stype->type_id), stype});
 418 }
 419
 420 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 421   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
 422              "Cannot mount non-existent disk \"%s\"", mount->storageId);
 423
 424   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 425
 426   if (mount_list.empty())
 427     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
 428   mount_list.insert({std::string(mount->name), simgrid::surf::StorageImpl::byName(mount->storageId)});
 429 }
 430
 431 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 432 {
 433   routing_get_current()->addRoute(route);
 434 }
 435
 436 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 437 {
 438   routing_get_current()->addBypassRoute(bypassRoute);
 439 }
 440
 441 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 442 {
 443   sg_host_t host = sg_host_by_name(process->host);
 444   if (not host) {
 445     // The requested host does not exist. Do a nice message to the user
 446     std::string msg = std::string("Cannot create process '") + process->function + "': host '" + process->host +
 447                       "' does not exist\nExisting hosts: '";
 448     for (auto kv : simgrid::s4u::host_list) {
 449       simgrid::s4u::Host* host = kv.second;
 450       msg += host->name();
 451       msg += "', '";
 452       if (msg.length() > 1024) {
 453         msg.pop_back(); // remove trailing quote
 454         msg += "...(list truncated)......";
 455         break;
 456       }
 457     }
 458     xbt_die("%s", msg.c_str());
 459   }
 460   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 461   xbt_assert(factory, "Function '%s' unknown", process->function);
 462
 463   double start_time = process->start_time;
 464   double kill_time  = process->kill_time;
 465   int auto_restart = process->on_failure == SURF_ACTOR_ON_FAILURE_DIE ? 0 : 1;
 466
 467   std::vector<std::string> args(process->argv, process->argv + process->argc);
 468   std::function<void()> code = factory(std::move(args));
 469
 470   smx_process_arg_t arg = nullptr;
 471
 472   arg = new simgrid::simix::ProcessArg();
 473   arg->name = std::string(process->argv[0]);
 474   arg->code = code;
 475   arg->data = nullptr;
 476   arg->host = host;
 477   arg->kill_time = kill_time;
 478   arg->properties = current_property_set;
 479
 480   host->extension<simgrid::simix::Host>()->boot_processes.push_back(arg);
 481
 482   if (start_time > SIMIX_get_clock()) {
 483
 484     arg = new simgrid::simix::ProcessArg();
 485     arg->name = std::string(process->argv[0]);
 486     arg->code = std::move(code);
 487     arg->data = nullptr;
 488     arg->host = host;
 489     arg->kill_time = kill_time;
 490     arg->properties = current_property_set;
 491
 492     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 493     SIMIX_timer_set(start_time, [arg, auto_restart]() {
 494       smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(arg->code), arg->data,
 495                                                                 arg->host, arg->properties, nullptr);
 496       if (arg->kill_time >= 0)
 497         simcall_process_set_kill_time(actor, arg->kill_time);
 498       if (auto_restart)
 499         SIMIX_process_auto_restart_set(actor, auto_restart);
 500       delete arg;
 501     });
 502   } else {                      // start_time <= SIMIX_get_clock()
 503     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 504
 505     smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(code), nullptr, host,
 506                                                               current_property_set, nullptr);
 507
 508     /* The actor creation will fail if the host is currently dead, but that's fine */
 509     if (actor != nullptr) {
 510       if (arg->kill_time >= 0)
 511         simcall_process_set_kill_time(actor, arg->kill_time);
 512       if (auto_restart)
 513         SIMIX_process_auto_restart_set(actor, auto_restart);
 514     }
 515   }
 516   current_property_set = nullptr;
 517 }
 518
 519 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 520 {
 521   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 522   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 523
 524   std::vector<double> speedPerPstate;
 525   speedPerPstate.push_back(peer->speed);
 526   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1, nullptr);
 527
 528   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
 529
 530   /* Change from the defaults */
 531   if (peer->state_trace)
 532     host->pimpl_cpu->setStateTrace(peer->state_trace);
 533   if (peer->speed_trace)
 534     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 535 }
 536
 537 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 538
 539 void sg_platf_end() {
 540   simgrid::s4u::onPlatformCreated();
 541 }
 542
 543 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 544 static void surf_config_models_setup()
 545 {
 546   const char* host_model_name    = xbt_cfg_get_string("host/model");
 547   const char* network_model_name = xbt_cfg_get_string("network/model");
 548   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 549   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 550
 551   /* The compound host model is needed when using non-default net/cpu models */
 552   if ((not xbt_cfg_is_default_value("network/model") || not xbt_cfg_is_default_value("cpu/model")) &&
 553       xbt_cfg_is_default_value("host/model")) {
 554     host_model_name = "compound";
 555     xbt_cfg_set_string("host/model", host_model_name);
 556   }
 557
 558   XBT_DEBUG("host model: %s", host_model_name);
 559   if (not strcmp(host_model_name, "compound")) {
 560     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 561     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 562
 563     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 564     surf_cpu_model_description[cpu_id].model_init_preparse();
 565
 566     int network_id = find_model_description(surf_network_model_description, network_model_name);
 567     surf_network_model_description[network_id].model_init_preparse();
 568   }
 569
 570   XBT_DEBUG("Call host_model_init");
 571   int host_id = find_model_description(surf_host_model_description, host_model_name);
 572   surf_host_model_description[host_id].model_init_preparse();
 573
 574   XBT_DEBUG("Call vm_model_init");
 575   surf_vm_model_init_HL13();
 576
 577   XBT_DEBUG("Call storage_model_init");
 578   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 579   surf_storage_model_description[storage_id].model_init_preparse();
 580 }
 581
 582 /**
 583  * \brief Add an AS to the platform
 584  *
 585  * Add a new autonomous system to the platform. Any elements (such as host,
 586  * router or sub-AS) added after this call and before the corresponding call
 587  * to sg_platf_new_AS_seal() will be added to this AS.
 588  *
 589  * Once this function was called, the configuration concerning the used
 590  * models cannot be changed anymore.
 591  *
 592  * @param AS the parameters defining the AS to build.
 593  */
 594 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 595 {
 596   if (not surf_parse_models_setup_already_called) {
 597     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 598      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 599      *
 600      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 601      * (FIXME: check it out by creating a file beginning with one of these tags)
 602      * but cluster and peer create ASes internally, so putting the code in there is ok.
 603      */
 604     surf_parse_models_setup_already_called = 1;
 605     surf_config_models_setup();
 606   }
 607
 608   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 609                             * any further config now that we created some real content */
 610
 611   /* search the routing model */
 612   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 613   switch(AS->routing){
 614     case A_surfxml_AS_routing_Cluster:
 615       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 616       break;
 617     case A_surfxml_AS_routing_ClusterDragonfly:
 618       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 619       break;
 620     case A_surfxml_AS_routing_ClusterTorus:
 621       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 622       break;
 623     case A_surfxml_AS_routing_ClusterFatTree:
 624       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 625       break;
 626     case A_surfxml_AS_routing_Dijkstra:
 627       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 628       break;
 629     case A_surfxml_AS_routing_DijkstraCache:
 630       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 631       break;
 632     case A_surfxml_AS_routing_Floyd:
 633       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 634       break;
 635     case A_surfxml_AS_routing_Full:
 636       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 637       break;
 638     case A_surfxml_AS_routing_None:
 639       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 640       break;
 641     case A_surfxml_AS_routing_Vivaldi:
 642       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 643       break;
 644     default:
 645       xbt_die("Not a valid model!");
 646       break;
 647   }
 648
 649   if (current_routing == nullptr) { /* it is the first one */
 650     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 651                "All defined components must belong to a AS");
 652     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 653
 654   } else {
 655     /* set the father behavior */
 656     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 657       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 658     /* add to the sons dictionary */
 659     current_routing->children()->push_back(static_cast<simgrid::s4u::NetZone*>(new_as));
 660   }
 661
 662   /* set the new current component of the tree */
 663   current_routing = new_as;
 664
 665   simgrid::s4u::NetZone::onCreation(*new_as); // notify the signal
 666
 667   return new_as;
 668 }
 669
 670 /**
 671  * \brief Specify that the description of the current AS is finished
 672  *
 673  * Once you've declared all the content of your AS, you have to seal
 674  * it with this call. Your AS is not usable until you call this function.
 675  */
 676 void sg_platf_new_AS_seal()
 677 {
 678   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 679   current_routing->seal();
 680   simgrid::s4u::NetZone::onSeal(*current_routing);
 681   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 682 }
 683
 684 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 685 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 686 {
 687   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id)->pimpl_netpoint;
 688   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id);
 689   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 690              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 691
 692   simgrid::surf::LinkImpl* linkUp   = simgrid::surf::LinkImpl::byName(hostlink->link_up);
 693   simgrid::surf::LinkImpl* linkDown = simgrid::surf::LinkImpl::byName(hostlink->link_down);
 694
 695   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 696   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 697
 698   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 699
 700   if (as_cluster->privateLinks_.find(netpoint->id()) != as_cluster->privateLinks_.end())
 701     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 702
 703   XBT_DEBUG("Push Host_link for host '%s' to position %d", netpoint->cname(), netpoint->id());
 704   as_cluster->privateLinks_.insert({netpoint->id(), {linkUp, linkDown}});
 705 }
 706
 707 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 708 {
 709   tmgr_trace_t tmgr_trace;
 710   if (trace->file && strcmp(trace->file, "") != 0) {
 711     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 712   } else {
 713     xbt_assert(strcmp(trace->pc_data, ""),
 714         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 715     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 716   }
 717   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 718 }