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
   8 #include "src/kernel/EngineImpl.hpp"
   9 #include "src/simix/smx_private.h"
  10
  11 #include "src/include/simgrid/sg_config.h"
  12
  13 #include "src/surf/HostImpl.hpp"
  14 #include "src/surf/cpu_interface.hpp"
  15 #include "src/surf/network_interface.hpp"
  16
  17 #include "src/kernel/routing/ClusterZone.hpp"
  18 #include "src/kernel/routing/DijkstraZone.hpp"
  19 #include "src/kernel/routing/DragonflyZone.hpp"
  20 #include "src/kernel/routing/EmptyZone.hpp"
  21 #include "src/kernel/routing/FatTreeZone.hpp"
  22 #include "src/kernel/routing/FloydZone.hpp"
  23 #include "src/kernel/routing/FullZone.hpp"
  24 #include "src/kernel/routing/NetPoint.hpp"
  25 #include "src/kernel/routing/NetZoneImpl.hpp"
  26 #include "src/kernel/routing/TorusZone.hpp"
  27 #include "src/kernel/routing/VivaldiZone.hpp"
  28 #include <string>
  29 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  30
  31 XBT_PRIVATE std::map<std::string, simgrid::surf::Storage*> mount_list;
  32 XBT_PRIVATE std::vector<std::string> known_storages;
  33
  34 namespace simgrid {
  35 namespace surf {
  36
  37 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  38
  39 }
  40 }
  41
  42 // FIXME: The following duplicates the content of s4u::Host
  43 namespace simgrid {
  44 namespace s4u {
  45 extern std::map<std::string, simgrid::s4u::Host*> host_list;
  46 }
  47 }
  48
  49 static int surf_parse_models_setup_already_called = 0;
  50 std::map<std::string, storage_type_t> storage_types;
  51
  52 /** The current AS in the parsing */
  53 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  54 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  55 {
  56   return current_routing;
  57 }
  58
  59 /** Module management function: creates all internal data structures */
  60 void sg_platf_init()
  61 { /* Do nothing: just for symmetry of user code */
  62 }
  63
  64 /** Module management function: frees all internal data structures */
  65 void sg_platf_exit() {
  66   simgrid::surf::on_cluster.disconnect_all_slots();
  67   simgrid::s4u::onPlatformCreated.disconnect_all_slots();
  68
  69   /* make sure that we will reinit the models while loading the platf once reinited */
  70   surf_parse_models_setup_already_called = 0;
  71   surf_parse_lex_destroy();
  72 }
  73
  74 /** @brief Add an host to the current AS */
  75 void sg_platf_new_host(sg_platf_host_cbarg_t args)
  76 {
  77   std::unordered_map<std::string, std::string> props;
  78   if (args->properties) {
  79     xbt_dict_cursor_t cursor=nullptr;
  80     char *key;
  81     char* data;
  82     xbt_dict_foreach (args->properties, cursor, key, data)
  83       props[key] = data;
  84     xbt_dict_free(&args->properties);
  85   }
  86
  87   simgrid::s4u::Host* host =
  88       routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount, &props);
  89
  90   host->pimpl_->storage_ = mount_list;
  91   mount_list.clear();
  92
  93   /* Change from the defaults */
  94   if (args->state_trace)
  95     host->pimpl_cpu->setStateTrace(args->state_trace);
  96   if (args->speed_trace)
  97     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
  98   if (args->pstate != 0)
  99     host->pimpl_cpu->setPState(args->pstate);
 100   if (args->coord && strcmp(args->coord, ""))
 101     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netpoint, args->coord);
 102
 103   if (TRACE_is_enabled() && TRACE_needs_platform())
 104     sg_instr_new_host(*host);
 105 }
 106
 107 /** @brief Add a "router" to the network element list */
 108 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const char* name, const char* coords)
 109 {
 110   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
 111
 112   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 113     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
 114   xbt_assert(nullptr == simgrid::s4u::Engine::instance()->netpointByNameOrNull(name),
 115              "Refusing to create a router named '%s': this name already describes a node.", name);
 116
 117   simgrid::kernel::routing::NetPoint* netpoint =
 118       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
 119   XBT_DEBUG("Router '%s' has the id %d", name, netpoint->id());
 120
 121   if (coords && strcmp(coords, ""))
 122     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 123
 124   sg_instr_new_router(name);
 125
 126   return netpoint;
 127 }
 128
 129 void sg_platf_new_link(LinkCreationArgs* link)
 130 {
 131   std::vector<std::string> names;
 132
 133   if (link->policy == SURF_LINK_FULLDUPLEX) {
 134     names.push_back(link->id+ "_UP");
 135     names.push_back(link->id+ "_DOWN");
 136   } else {
 137     names.push_back(link->id);
 138   }
 139   for (auto link_name : names) {
 140     simgrid::surf::LinkImpl* l =
 141         surf_network_model->createLink(link_name.c_str(), link->bandwidth, link->latency, link->policy);
 142
 143     if (link->properties) {
 144       xbt_dict_cursor_t cursor = nullptr;
 145       char* key;
 146       char* data;
 147       xbt_dict_foreach (link->properties, cursor, key, data)
 148         l->setProperty(key, data);
 149       xbt_dict_free(&link->properties);
 150     }
 151
 152     if (link->latency_trace)
 153       l->setLatencyTrace(link->latency_trace);
 154     if (link->bandwidth_trace)
 155       l->setBandwidthTrace(link->bandwidth_trace);
 156     if (link->state_trace)
 157       l->setStateTrace(link->state_trace);
 158   }
 159 }
 160
 161 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 162 {
 163   using simgrid::kernel::routing::ClusterZone;
 164   using simgrid::kernel::routing::DragonflyZone;
 165   using simgrid::kernel::routing::FatTreeZone;
 166   using simgrid::kernel::routing::TorusZone;
 167
 168   int rankId=0;
 169
 170   // What an inventive way of initializing the AS that I have as ancestor :-(
 171   s_sg_platf_AS_cbarg_t AS;
 172   AS.id = cluster->id;
 173   switch (cluster->topology) {
 174   case SURF_CLUSTER_TORUS:
 175     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 176     break;
 177   case SURF_CLUSTER_DRAGONFLY:
 178     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 179     break;
 180   case SURF_CLUSTER_FAT_TREE:
 181     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 182     break;
 183   default:
 184     AS.routing = A_surfxml_AS_routing_Cluster;
 185     break;
 186   }
 187   sg_platf_new_AS_begin(&AS);
 188   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 189   current_as->parse_specific_arguments(cluster);
 190
 191   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 192     current_as->linkCountPerNode_++;
 193     current_as->hasLoopback_ = 1;
 194   }
 195
 196   if(cluster->limiter_link > 0){
 197     current_as->linkCountPerNode_++;
 198     current_as->hasLimiter_ = 1;
 199   }
 200
 201   for (int i : *cluster->radicals) {
 202     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 203     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 204
 205     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speeds.front());
 206
 207     s_sg_platf_host_cbarg_t host;
 208     memset(&host, 0, sizeof(host));
 209     host.id = host_id;
 210     if ((cluster->properties != nullptr) && (not xbt_dict_is_empty(cluster->properties))) {
 211       xbt_dict_cursor_t cursor=nullptr;
 212       char *key;
 213       char* data;
 214       host.properties = xbt_dict_new_homogeneous(free);
 215
 216       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 217         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 218       }
 219     }
 220
 221     host.speed_per_pstate = cluster->speeds;
 222     host.pstate = 0;
 223     host.core_amount = cluster->core_amount;
 224     host.coord = "";
 225     sg_platf_new_host(&host);
 226     XBT_DEBUG("</host>");
 227
 228     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 229
 230     // All links are saved in a matrix;
 231     // every row describes a single node; every node may have multiple links.
 232     // the first column may store a link from x to x if p_has_loopback is set
 233     // the second column may store a limiter link if p_has_limiter is set
 234     // other columns are to store one or more link for the node
 235
 236     //add a loopback link
 237     simgrid::surf::LinkImpl* linkUp   = nullptr;
 238     simgrid::surf::LinkImpl* linkDown = nullptr;
 239     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 240       char *tmp_link = bprintf("%s_loopback", link_id);
 241       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 242
 243       LinkCreationArgs link;
 244       link.id        = tmp_link;
 245       link.bandwidth = cluster->loopback_bw;
 246       link.latency   = cluster->loopback_lat;
 247       link.policy    = SURF_LINK_FATPIPE;
 248       sg_platf_new_link(&link);
 249       linkUp   = simgrid::surf::LinkImpl::byName(tmp_link);
 250       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 251       free(tmp_link);
 252
 253       auto as_cluster = static_cast<ClusterZone*>(current_as);
 254       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 255     }
 256
 257     //add a limiter link (shared link to account for maximal bandwidth of the node)
 258     linkUp   = nullptr;
 259     linkDown = nullptr;
 260     if(cluster->limiter_link > 0){
 261       char *tmp_link = bprintf("%s_limiter", link_id);
 262       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 263
 264       LinkCreationArgs link;
 265       link.id = tmp_link;
 266       link.bandwidth = cluster->limiter_link;
 267       link.latency = 0;
 268       link.policy = SURF_LINK_SHARED;
 269       sg_platf_new_link(&link);
 270       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 271       linkUp   = linkDown;
 272       free(tmp_link);
 273       current_as->privateLinks_.insert(
 274           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 275     }
 276
 277     //call the cluster function that adds the others links
 278     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 279       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 280     } else {
 281       current_as->create_links_for_node(cluster, i, rankId,
 282           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 283     }
 284     xbt_free(link_id);
 285     xbt_free(host_id);
 286     rankId++;
 287   }
 288   xbt_dict_free(&cluster->properties);
 289
 290   // Add a router.
 291   XBT_DEBUG(" ");
 292   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 293   if (not cluster->router_id || not strcmp(cluster->router_id, "")) {
 294     char* newid         = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 295     current_as->router_ = sg_platf_new_router(newid, NULL);
 296     free(newid);
 297   } else {
 298     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 299   }
 300
 301   //Make the backbone
 302   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 303
 304     LinkCreationArgs link;
 305     link.id        = std::string(cluster->id)+ "_backbone";
 306     link.bandwidth = cluster->bb_bw;
 307     link.latency   = cluster->bb_lat;
 308     link.policy    = cluster->bb_sharing_policy;
 309
 310     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 311     sg_platf_new_link(&link);
 312
 313     routing_cluster_add_backbone(simgrid::surf::LinkImpl::byName(link.id.c_str()));
 314   }
 315
 316   XBT_DEBUG("</AS>");
 317   sg_platf_new_AS_seal();
 318
 319   simgrid::surf::on_cluster(cluster);
 320   delete cluster->radicals;
 321 }
 322
 323 void routing_cluster_add_backbone(simgrid::surf::LinkImpl* bb)
 324 {
 325   simgrid::kernel::routing::ClusterZone* cluster =
 326       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 327
 328   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 329   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 330
 331   cluster->backbone_ = bb;
 332   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 333 }
 334
 335 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 336 {
 337   for (int radical : *cabinet->radicals) {
 338     std::string hostname = std::string(cabinet->prefix) + std::to_string(radical) + std::string(cabinet->suffix);
 339     s_sg_platf_host_cbarg_t host;
 340     memset(&host, 0, sizeof(host));
 341     host.pstate           = 0;
 342     host.core_amount      = 1;
 343     host.id               = hostname.c_str();
 344     host.speed_per_pstate.push_back(cabinet->speed);
 345     sg_platf_new_host(&host);
 346
 347     LinkCreationArgs link;
 348     link.policy    = SURF_LINK_FULLDUPLEX;
 349     link.latency   = cabinet->lat;
 350     link.bandwidth = cabinet->bw;
 351     link.id        = "link_" + hostname;
 352     sg_platf_new_link(&link);
 353
 354     s_sg_platf_host_link_cbarg_t host_link;
 355     memset(&host_link, 0, sizeof(host_link));
 356     host_link.id        = hostname.c_str();
 357     host_link.link_up   = bprintf("link_%s_UP",hostname.c_str());
 358     host_link.link_down = bprintf("link_%s_DOWN",hostname.c_str());
 359     sg_platf_new_hostlink(&host_link);
 360     free((char*)host_link.link_up);
 361     free((char*)host_link.link_down);
 362   }
 363   delete cabinet->radicals;
 364 }
 365
 366 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 367 {
 368   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
 369              "Refusing to add a second storage named \"%s\"", storage->id);
 370
 371   xbt_assert(storage_types.find(storage->type_id) != storage_types.end(), "No storage type '%s'", storage->type_id);
 372   storage_type_t stype = storage_types.at(storage->type_id);
 373
 374   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id, storage->type_id,
 375             storage->content);
 376
 377   known_storages.push_back(storage->id);
 378
 379   // if storage content is not specified use the content of storage_type if any
 380   if (not strcmp(storage->content, "") && strcmp(stype->content, "")) {
 381     storage->content      = stype->content;
 382     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id, stype->type_id);
 383   }
 384
 385   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 386             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
 387             "\n\t\tproperties '%p''\n",
 388             storage->id, stype->model, stype->type_id, storage->content, storage->properties);
 389
 390   auto s = surf_storage_model->createStorage(storage->id, stype->type_id, storage->content, storage->attach);
 391
 392   if (storage->properties) {
 393     xbt_dict_cursor_t cursor = nullptr;
 394     char *key;
 395     char* data;
 396     xbt_dict_foreach (storage->properties, cursor, key, data)
 397       s->setProperty(key, data);
 398     xbt_dict_free(&storage->properties);
 399   }
 400 }
 401
 402 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type)
 403 {
 404   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
 405              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 406
 407   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 408   stype->model = xbt_strdup(storage_type->model);
 409   stype->properties = storage_type->properties;
 410   stype->content = xbt_strdup(storage_type->content);
 411   stype->type_id = xbt_strdup(storage_type->id);
 412   stype->size = storage_type->size;
 413   stype->model_properties = storage_type->model_properties;
 414
 415   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', content '%s'", stype->type_id, stype->model,
 416             storage_type->content);
 417
 418   storage_types.insert({std::string(stype->type_id), stype});
 419 }
 420
 421 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 422   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
 423              "Cannot mount non-existent disk \"%s\"", mount->storageId);
 424
 425   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 426
 427   if (mount_list.empty())
 428     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
 429   mount_list.insert(
 430       {std::string(mount->name), surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId))});
 431 }
 432
 433 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 434 {
 435   routing_get_current()->addRoute(route);
 436 }
 437
 438 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 439 {
 440   routing_get_current()->addBypassRoute(bypassRoute);
 441 }
 442
 443 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 444 {
 445   sg_host_t host = sg_host_by_name(process->host);
 446   if (not host) {
 447     // The requested host does not exist. Do a nice message to the user
 448     std::string msg = std::string("Cannot create process '") + process->function + "': host '" + process->host +
 449                       "' does not exist\nExisting hosts: '";
 450     for (auto kv : simgrid::s4u::host_list) {
 451       simgrid::s4u::Host* host = kv.second;
 452       msg += host->name();
 453       msg += "', '";
 454       if (msg.length() > 1024) {
 455         msg.pop_back(); // remove trailing quote
 456         msg += "...(list truncated)......";
 457         break;
 458       }
 459     }
 460     xbt_die("%s", msg.c_str());
 461   }
 462   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 463   xbt_assert(factory, "Function '%s' unknown", process->function);
 464
 465   double start_time = process->start_time;
 466   double kill_time  = process->kill_time;
 467   int auto_restart = process->on_failure == SURF_ACTOR_ON_FAILURE_DIE ? 0 : 1;
 468
 469   std::vector<std::string> args(process->argv, process->argv + process->argc);
 470   std::function<void()> code = factory(std::move(args));
 471
 472   smx_process_arg_t arg = nullptr;
 473
 474   arg = new simgrid::simix::ProcessArg();
 475   arg->name = std::string(process->argv[0]);
 476   arg->code = code;
 477   arg->data = nullptr;
 478   arg->host = host;
 479   arg->kill_time = kill_time;
 480   arg->properties = current_property_set;
 481
 482   host->extension<simgrid::simix::Host>()->boot_processes.push_back(arg);
 483
 484   if (start_time > SIMIX_get_clock()) {
 485
 486     arg = new simgrid::simix::ProcessArg();
 487     arg->name = std::string(process->argv[0]);
 488     arg->code = std::move(code);
 489     arg->data = nullptr;
 490     arg->host = host;
 491     arg->kill_time = kill_time;
 492     arg->properties = current_property_set;
 493
 494     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 495     SIMIX_timer_set(start_time, [arg, auto_restart]() {
 496       smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(arg->code), arg->data,
 497                                                                 arg->host, arg->properties, nullptr);
 498       if (arg->kill_time >= 0)
 499         simcall_process_set_kill_time(actor, arg->kill_time);
 500       if (auto_restart)
 501         SIMIX_process_auto_restart_set(actor, auto_restart);
 502       delete arg;
 503     });
 504   } else {                      // start_time <= SIMIX_get_clock()
 505     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 506
 507     smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(code), nullptr, host,
 508                                                               current_property_set, nullptr);
 509
 510     /* The actor creation will fail if the host is currently dead, but that's fine */
 511     if (actor != nullptr) {
 512       if (arg->kill_time >= 0)
 513         simcall_process_set_kill_time(actor, arg->kill_time);
 514       if (auto_restart)
 515         SIMIX_process_auto_restart_set(actor, auto_restart);
 516     }
 517   }
 518   current_property_set = nullptr;
 519 }
 520
 521 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 522 {
 523   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 524   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 525
 526   std::vector<double> speedPerPstate;
 527   speedPerPstate.push_back(peer->speed);
 528   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1, nullptr);
 529
 530   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
 531
 532   /* Change from the defaults */
 533   if (peer->state_trace)
 534     host->pimpl_cpu->setStateTrace(peer->state_trace);
 535   if (peer->speed_trace)
 536     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 537 }
 538
 539 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 540
 541 void sg_platf_end() {
 542   simgrid::s4u::onPlatformCreated();
 543 }
 544
 545 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 546 static void surf_config_models_setup()
 547 {
 548   const char* host_model_name    = xbt_cfg_get_string("host/model");
 549   const char* network_model_name = xbt_cfg_get_string("network/model");
 550   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 551   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 552
 553   /* The compound host model is needed when using non-default net/cpu models */
 554   if ((not xbt_cfg_is_default_value("network/model") || not xbt_cfg_is_default_value("cpu/model")) &&
 555       xbt_cfg_is_default_value("host/model")) {
 556     host_model_name = "compound";
 557     xbt_cfg_set_string("host/model", host_model_name);
 558   }
 559
 560   XBT_DEBUG("host model: %s", host_model_name);
 561   if (not strcmp(host_model_name, "compound")) {
 562     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 563     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 564
 565     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 566     surf_cpu_model_description[cpu_id].model_init_preparse();
 567
 568     int network_id = find_model_description(surf_network_model_description, network_model_name);
 569     surf_network_model_description[network_id].model_init_preparse();
 570   }
 571
 572   XBT_DEBUG("Call host_model_init");
 573   int host_id = find_model_description(surf_host_model_description, host_model_name);
 574   surf_host_model_description[host_id].model_init_preparse();
 575
 576   XBT_DEBUG("Call vm_model_init");
 577   surf_vm_model_init_HL13();
 578
 579   XBT_DEBUG("Call storage_model_init");
 580   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 581   surf_storage_model_description[storage_id].model_init_preparse();
 582 }
 583
 584 /**
 585  * \brief Add an AS to the platform
 586  *
 587  * Add a new autonomous system to the platform. Any elements (such as host,
 588  * router or sub-AS) added after this call and before the corresponding call
 589  * to sg_platf_new_AS_seal() will be added to this AS.
 590  *
 591  * Once this function was called, the configuration concerning the used
 592  * models cannot be changed anymore.
 593  *
 594  * @param AS the parameters defining the AS to build.
 595  */
 596 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 597 {
 598   if (not surf_parse_models_setup_already_called) {
 599     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 600      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 601      *
 602      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 603      * (FIXME: check it out by creating a file beginning with one of these tags)
 604      * but cluster and peer create ASes internally, so putting the code in there is ok.
 605      */
 606     surf_parse_models_setup_already_called = 1;
 607     surf_config_models_setup();
 608   }
 609
 610   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 611                             * any further config now that we created some real content */
 612
 613   /* search the routing model */
 614   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 615   switch(AS->routing){
 616     case A_surfxml_AS_routing_Cluster:
 617       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 618       break;
 619     case A_surfxml_AS_routing_ClusterDragonfly:
 620       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 621       break;
 622     case A_surfxml_AS_routing_ClusterTorus:
 623       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 624       break;
 625     case A_surfxml_AS_routing_ClusterFatTree:
 626       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 627       break;
 628     case A_surfxml_AS_routing_Dijkstra:
 629       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 630       break;
 631     case A_surfxml_AS_routing_DijkstraCache:
 632       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 633       break;
 634     case A_surfxml_AS_routing_Floyd:
 635       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 636       break;
 637     case A_surfxml_AS_routing_Full:
 638       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 639       break;
 640     case A_surfxml_AS_routing_None:
 641       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 642       break;
 643     case A_surfxml_AS_routing_Vivaldi:
 644       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 645       break;
 646     default:
 647       xbt_die("Not a valid model!");
 648       break;
 649   }
 650
 651   if (current_routing == nullptr) { /* it is the first one */
 652     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 653                "All defined components must belong to a AS");
 654     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 655
 656   } else {
 657     /* set the father behavior */
 658     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 659       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 660     /* add to the sons dictionary */
 661     current_routing->children()->push_back(static_cast<simgrid::s4u::NetZone*>(new_as));
 662   }
 663
 664   /* set the new current component of the tree */
 665   current_routing = new_as;
 666
 667   if (TRACE_is_enabled())
 668     sg_instr_AS_begin(AS);
 669
 670   return new_as;
 671 }
 672
 673 /**
 674  * \brief Specify that the description of the current AS is finished
 675  *
 676  * Once you've declared all the content of your AS, you have to seal
 677  * it with this call. Your AS is not usable until you call this function.
 678  */
 679 void sg_platf_new_AS_seal()
 680 {
 681   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 682   current_routing->seal();
 683   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 684
 685   if (TRACE_is_enabled())
 686     sg_instr_AS_end();
 687 }
 688
 689 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 690 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 691 {
 692   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id)->pimpl_netpoint;
 693   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id);
 694   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 695              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 696
 697   simgrid::surf::LinkImpl* linkUp   = simgrid::surf::LinkImpl::byName(hostlink->link_up);
 698   simgrid::surf::LinkImpl* linkDown = simgrid::surf::LinkImpl::byName(hostlink->link_down);
 699
 700   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 701   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 702
 703   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 704
 705   if (as_cluster->privateLinks_.find(netpoint->id()) != as_cluster->privateLinks_.end())
 706     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 707
 708   XBT_DEBUG("Push Host_link for host '%s' to position %d", netpoint->cname(), netpoint->id());
 709   as_cluster->privateLinks_.insert({netpoint->id(), {linkUp, linkDown}});
 710 }
 711
 712 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 713 {
 714   tmgr_trace_t tmgr_trace;
 715   if (trace->file && strcmp(trace->file, "") != 0) {
 716     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 717   } else {
 718     xbt_assert(strcmp(trace->pc_data, ""),
 719         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 720     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 721   }
 722   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 723 }