src/surf/sg_platf.cpp

   1
   2 /* This program is free software; you can redistribute it and/or modify it
   3  * under the terms of the license (GNU LGPL) which comes with this package. */
   4
   5 #include "simgrid/s4u/engine.hpp"
   6
   7 #include "src/kernel/EngineImpl.hpp"
   8 #include "src/simix/smx_private.h"
   9
  10 #include "src/include/simgrid/sg_config.h"
  11
  12 #include "src/surf/HostImpl.hpp"
  13 #include "src/surf/cpu_interface.hpp"
  14 #include "src/surf/network_interface.hpp"
  15
  16 #include "src/kernel/routing/ClusterZone.hpp"
  17 #include "src/kernel/routing/DijkstraZone.hpp"
  18 #include "src/kernel/routing/DragonflyZone.hpp"
  19 #include "src/kernel/routing/EmptyZone.hpp"
  20 #include "src/kernel/routing/FatTreeZone.hpp"
  21 #include "src/kernel/routing/FloydZone.hpp"
  22 #include "src/kernel/routing/FullZone.hpp"
  23 #include "src/kernel/routing/NetPoint.hpp"
  24 #include "src/kernel/routing/NetZoneImpl.hpp"
  25 #include "src/kernel/routing/TorusZone.hpp"
  26 #include "src/kernel/routing/VivaldiZone.hpp"
  27 #include <string>
  28 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  29
  30 XBT_PRIVATE std::vector<s_mount_t> mount_list;
  31
  32 namespace simgrid {
  33 namespace surf {
  34
  35 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  36
  37 }
  38 }
  39
  40 static int surf_parse_models_setup_already_called = 0;
  41
  42 /** The current AS in the parsing */
  43 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
  44 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
  45 {
  46   return current_routing;
  47 }
  48
  49 /** Module management function: creates all internal data structures */
  50 void sg_platf_init() {
  51 }
  52
  53 /** Module management function: frees all internal data structures */
  54 void sg_platf_exit() {
  55   simgrid::surf::on_cluster.disconnect_all_slots();
  56   simgrid::s4u::onPlatformCreated.disconnect_all_slots();
  57
  58   /* make sure that we will reinit the models while loading the platf once reinited */
  59   surf_parse_models_setup_already_called = 0;
  60   surf_parse_lex_destroy();
  61 }
  62
  63 /** @brief Add an host to the current AS */
  64 void sg_platf_new_host(sg_platf_host_cbarg_t args)
  65 {
  66   std::unordered_map<std::string, std::string> props;
  67   if (args->properties) {
  68     xbt_dict_cursor_t cursor=nullptr;
  69     char *key;
  70     char* data;
  71     xbt_dict_foreach (args->properties, cursor, key, data)
  72       props[key] = data;
  73     xbt_dict_free(&args->properties);
  74   }
  75
  76   simgrid::s4u::Host* host =
  77       routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount, &props);
  78
  79   host->pimpl_->storage_ = mount_list;
  80   mount_list.clear();
  81
  82   /* Change from the defaults */
  83   if (args->state_trace)
  84     host->pimpl_cpu->setStateTrace(args->state_trace);
  85   if (args->speed_trace)
  86     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
  87   if (args->pstate != 0)
  88     host->pimpl_cpu->setPState(args->pstate);
  89   if (args->coord && strcmp(args->coord, ""))
  90     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netpoint, args->coord);
  91
  92   if (TRACE_is_enabled() && TRACE_needs_platform())
  93     sg_instr_new_host(*host);
  94 }
  95
  96 /** @brief Add a "router" to the network element list */
  97 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const char* name, const char* coords)
  98 {
  99   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
 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::instance()->netpointByNameOrNull(name),
 104              "Refusing to create a router named '%s': this name already describes a node.", name);
 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 %d", name, netpoint->id());
 109
 110   if (coords && strcmp(coords, ""))
 111     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
 112
 113   sg_instr_new_router(name);
 114
 115   return netpoint;
 116 }
 117
 118 void sg_platf_new_link(LinkCreationArgs* link)
 119 {
 120   std::vector<std::string> names;
 121
 122   if (link->policy == SURF_LINK_FULLDUPLEX) {
 123     names.push_back(link->id+ "_UP");
 124     names.push_back(link->id+ "_DOWN");
 125   } else {
 126     names.push_back(link->id);
 127   }
 128   for (auto link_name : names) {
 129     simgrid::surf::LinkImpl* l =
 130         surf_network_model->createLink(link_name.c_str(), link->bandwidth, link->latency, link->policy);
 131
 132     if (link->properties) {
 133       xbt_dict_cursor_t cursor = nullptr;
 134       char* key;
 135       char* data;
 136       xbt_dict_foreach (link->properties, cursor, key, data)
 137         l->setProperty(key, data);
 138       xbt_dict_free(&link->properties);
 139     }
 140
 141     if (link->latency_trace)
 142       l->setLatencyTrace(link->latency_trace);
 143     if (link->bandwidth_trace)
 144       l->setBandwidthTrace(link->bandwidth_trace);
 145     if (link->state_trace)
 146       l->setStateTrace(link->state_trace);
 147   }
 148 }
 149
 150 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 151 {
 152   using simgrid::kernel::routing::ClusterZone;
 153   using simgrid::kernel::routing::DragonflyZone;
 154   using simgrid::kernel::routing::FatTreeZone;
 155   using simgrid::kernel::routing::TorusZone;
 156
 157   int rankId=0;
 158
 159
 160   // What an inventive way of initializing the AS that I have as ancestor :-(
 161   s_sg_platf_AS_cbarg_t AS;
 162   AS.id = cluster->id;
 163   switch (cluster->topology) {
 164   case SURF_CLUSTER_TORUS:
 165     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 166     break;
 167   case SURF_CLUSTER_DRAGONFLY:
 168     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 169     break;
 170   case SURF_CLUSTER_FAT_TREE:
 171     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 172     break;
 173   default:
 174     AS.routing = A_surfxml_AS_routing_Cluster;
 175     break;
 176   }
 177   sg_platf_new_AS_begin(&AS);
 178   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 179   current_as->parse_specific_arguments(cluster);
 180
 181   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 182     current_as->linkCountPerNode_++;
 183     current_as->hasLoopback_ = 1;
 184   }
 185
 186   if(cluster->limiter_link > 0){
 187     current_as->linkCountPerNode_++;
 188     current_as->hasLimiter_ = 1;
 189   }
 190
 191   for (int i : *cluster->radicals) {
 192     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 193     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 194
 195     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speeds.front());
 196
 197     s_sg_platf_host_cbarg_t host;
 198     memset(&host, 0, sizeof(host));
 199     host.id = host_id;
 200     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 201       xbt_dict_cursor_t cursor=nullptr;
 202       char *key;
 203       char* data;
 204       host.properties = xbt_dict_new_homogeneous(free);
 205
 206       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 207         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 208       }
 209     }
 210
 211     host.speed_per_pstate = cluster->speeds;
 212     host.pstate = 0;
 213     host.core_amount = cluster->core_amount;
 214     host.coord = "";
 215     sg_platf_new_host(&host);
 216     XBT_DEBUG("</host>");
 217
 218     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 219
 220     // All links are saved in a matrix;
 221     // every row describes a single node; every node may have multiple links.
 222     // the first column may store a link from x to x if p_has_loopback is set
 223     // the second column may store a limiter link if p_has_limiter is set
 224     // other columns are to store one or more link for the node
 225
 226     //add a loopback link
 227     simgrid::surf::LinkImpl* linkUp   = nullptr;
 228     simgrid::surf::LinkImpl* linkDown = nullptr;
 229     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
 230       char *tmp_link = bprintf("%s_loopback", link_id);
 231       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 232
 233       LinkCreationArgs link;
 234       link.id        = tmp_link;
 235       link.bandwidth = cluster->loopback_bw;
 236       link.latency   = cluster->loopback_lat;
 237       link.policy    = SURF_LINK_FATPIPE;
 238       sg_platf_new_link(&link);
 239       linkUp   = simgrid::surf::LinkImpl::byName(tmp_link);
 240       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 241       free(tmp_link);
 242
 243       auto as_cluster = static_cast<ClusterZone*>(current_as);
 244       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 245     }
 246
 247     //add a limiter link (shared link to account for maximal bandwidth of the node)
 248     linkUp   = nullptr;
 249     linkDown = nullptr;
 250     if(cluster->limiter_link > 0){
 251       char *tmp_link = bprintf("%s_limiter", link_id);
 252       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 253
 254       LinkCreationArgs link;
 255       link.id = tmp_link;
 256       link.bandwidth = cluster->limiter_link;
 257       link.latency = 0;
 258       link.policy = SURF_LINK_SHARED;
 259       sg_platf_new_link(&link);
 260       linkUp = linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 261       free(tmp_link);
 262       current_as->privateLinks_.insert(
 263           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 264     }
 265
 266     //call the cluster function that adds the others links
 267     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 268       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 269     }
 270     else {
 271       current_as->create_links_for_node(cluster, i, rankId,
 272           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 273     }
 274     xbt_free(link_id);
 275     xbt_free(host_id);
 276     rankId++;
 277   }
 278
 279   // Add a router.
 280   XBT_DEBUG(" ");
 281   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 282   if (!cluster->router_id || !strcmp(cluster->router_id, "")) {
 283     char* newid         = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 284     current_as->router_ = sg_platf_new_router(newid, NULL);
 285     free(newid);
 286   } else {
 287     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 288   }
 289
 290   //Make the backbone
 291   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
 292
 293     LinkCreationArgs link;
 294     link.id        = std::string(cluster->id)+ "_backbone";
 295     link.bandwidth = cluster->bb_bw;
 296     link.latency   = cluster->bb_lat;
 297     link.policy    = cluster->bb_sharing_policy;
 298
 299     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 300     sg_platf_new_link(&link);
 301
 302     routing_cluster_add_backbone(simgrid::surf::LinkImpl::byName(link.id.c_str()));
 303   }
 304
 305   XBT_DEBUG("</AS>");
 306   sg_platf_new_AS_seal();
 307
 308   simgrid::surf::on_cluster(cluster);
 309   delete cluster->radicals;
 310 }
 311
 312 void routing_cluster_add_backbone(simgrid::surf::LinkImpl* bb)
 313 {
 314   simgrid::kernel::routing::ClusterZone* cluster =
 315       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 316
 317   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 318   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 319
 320   cluster->backbone_ = bb;
 321   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 322 }
 323
 324 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 325 {
 326   for (int radical : *cabinet->radicals) {
 327     std::string hostname = std::string(cabinet->prefix) + std::to_string(radical) + std::string(cabinet->suffix);
 328     s_sg_platf_host_cbarg_t host;
 329     memset(&host, 0, sizeof(host));
 330     host.pstate           = 0;
 331     host.core_amount      = 1;
 332     host.id               = hostname.c_str();
 333     host.speed_per_pstate.push_back(cabinet->speed);
 334     sg_platf_new_host(&host);
 335
 336     LinkCreationArgs link;
 337     link.policy    = SURF_LINK_FULLDUPLEX;
 338     link.latency   = cabinet->lat;
 339     link.bandwidth = cabinet->bw;
 340     link.id        = "link_" + hostname;
 341     sg_platf_new_link(&link);
 342
 343     s_sg_platf_host_link_cbarg_t host_link;
 344     memset(&host_link, 0, sizeof(host_link));
 345     host_link.id        = hostname.c_str();
 346     host_link.link_up   = bprintf("link_%s_UP",hostname.c_str());
 347     host_link.link_down = bprintf("link_%s_DOWN",hostname.c_str());
 348     sg_platf_new_hostlink(&host_link);
 349     free((char*)host_link.link_up);
 350     free((char*)host_link.link_down);
 351   }
 352   delete cabinet->radicals;
 353 }
 354
 355 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 356 {
 357   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 358                "Refusing to add a second storage named \"%s\"", storage->id);
 359
 360   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 361   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 362
 363   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 364       storage->id,
 365       storage->type_id,
 366       storage->content);
 367
 368   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 369
 370   // if storage content is not specified use the content of storage_type if any
 371   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 372     storage->content = ((storage_type_t) stype)->content;
 373     storage->content_type = ((storage_type_t) stype)->content_type;
 374     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 375         storage->id,((storage_type_t) stype)->content_type,
 376         ((storage_type_t) stype)->type_id);
 377   }
 378
 379   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 380       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 381       "\n\t\tproperties '%p''\n",
 382       storage->id,
 383       ((storage_type_t) stype)->model,
 384       ((storage_type_t) stype)->type_id,
 385       storage->content,
 386       storage->content_type,
 387     storage->properties);
 388
 389   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
 390                                              storage->content_type, 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 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 402
 403   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 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->content_type = xbt_strdup(storage_type->content_type);
 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', "
 416       "content '%s', and content_type '%s'",
 417       stype->type_id,
 418       stype->model,
 419       storage_type->content,
 420       storage_type->content_type);
 421
 422   xbt_lib_set(storage_type_lib,
 423       stype->type_id,
 424       ROUTING_STORAGE_TYPE_LEVEL,
 425       (void *) stype);
 426 }
 427
 428 static void mount_free(void *p)
 429 {
 430   mount_t mnt = (mount_t) p;
 431   xbt_free(mnt->name);
 432 }
 433
 434 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 435   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 436       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 437
 438   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 439
 440   s_mount_t mnt;
 441   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 442   mnt.name = xbt_strdup(mount->name);
 443
 444   if (mount_list.empty())
 445     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
 446   mount_list.push_back(mnt);
 447 }
 448
 449 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 450 {
 451   routing_get_current()->addRoute(route);
 452 }
 453
 454 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 455 {
 456   routing_get_current()->addBypassRoute(bypassRoute);
 457 }
 458
 459 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 460 {
 461   sg_host_t host = sg_host_by_name(process->host);
 462   if (!host) {
 463     // The requested host does not exist. Do a nice message to the user
 464     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 465     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 466     free(tmp);
 467     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 468     simgrid::s4u::Host* host;
 469     unsigned int cursor;
 470     xbt_dynar_foreach(all_hosts,cursor, host) {
 471       xbt_strbuff_append(msg, host->cname());
 472       xbt_strbuff_append(msg,"', '");
 473       if (msg->used > 1024) {
 474         msg->data[msg->used-3]='\0';
 475         msg->used -= 3;
 476
 477         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 478         break;
 479       }
 480     }
 481     msg->data[msg->used-3]='\0';
 482     xbt_die("%s", msg->data);
 483   }
 484   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 485   xbt_assert(factory, "Function '%s' unknown", process->function);
 486
 487   double start_time = process->start_time;
 488   double kill_time  = process->kill_time;
 489   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 490
 491   std::vector<std::string> args(process->argv, process->argv + process->argc);
 492   std::function<void()> code = factory(std::move(args));
 493
 494   smx_process_arg_t arg = nullptr;
 495
 496   arg = new simgrid::simix::ProcessArg();
 497   arg->name = std::string(process->argv[0]);
 498   arg->code = code;
 499   arg->data = nullptr;
 500   arg->host = host;
 501   arg->kill_time = kill_time;
 502   arg->properties = current_property_set;
 503
 504   host->extension<simgrid::simix::Host>()->boot_processes.push_back(arg);
 505
 506   if (start_time > SIMIX_get_clock()) {
 507
 508     arg = new simgrid::simix::ProcessArg();
 509     arg->name = std::string(process->argv[0]);
 510     arg->code = std::move(code);
 511     arg->data = nullptr;
 512     arg->host = host;
 513     arg->kill_time = kill_time;
 514     arg->properties = current_property_set;
 515
 516     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 517     SIMIX_timer_set(start_time, [arg, auto_restart]() {
 518       smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(arg->code), arg->data,
 519                                                                 arg->host, arg->properties, nullptr);
 520       if (arg->kill_time >= 0)
 521         simcall_process_set_kill_time(actor, arg->kill_time);
 522       if (auto_restart)
 523         SIMIX_process_auto_restart_set(actor, auto_restart);
 524       delete arg;
 525     });
 526   } else {                      // start_time <= SIMIX_get_clock()
 527     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 528
 529     smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(code), nullptr, host,
 530                                                               current_property_set, nullptr);
 531
 532     /* The actor creation will fail if the host is currently dead, but that's fine */
 533     if (actor != nullptr) {
 534       if (arg->kill_time >= 0)
 535         simcall_process_set_kill_time(actor, arg->kill_time);
 536       if (auto_restart)
 537         SIMIX_process_auto_restart_set(actor, auto_restart);
 538     }
 539   }
 540   current_property_set = nullptr;
 541 }
 542
 543 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 544 {
 545   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 546   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 547
 548   std::vector<double> speedPerPstate;
 549   speedPerPstate.push_back(peer->speed);
 550   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1, nullptr);
 551
 552   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
 553
 554   /* Change from the defaults */
 555   if (peer->state_trace)
 556     host->pimpl_cpu->setStateTrace(peer->state_trace);
 557   if (peer->speed_trace)
 558     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 559 }
 560
 561 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 562
 563 void sg_platf_end() {
 564   simgrid::s4u::onPlatformCreated();
 565 }
 566
 567 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 568 static void surf_config_models_setup()
 569 {
 570   const char* host_model_name    = xbt_cfg_get_string("host/model");
 571   const char* network_model_name = xbt_cfg_get_string("network/model");
 572   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 573   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 574
 575   /* The compound host model is needed when using non-default net/cpu models */
 576   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 577       xbt_cfg_is_default_value("host/model")) {
 578     host_model_name = "compound";
 579     xbt_cfg_set_string("host/model", host_model_name);
 580   }
 581
 582   XBT_DEBUG("host model: %s", host_model_name);
 583   if (!strcmp(host_model_name, "compound")) {
 584     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 585     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 586
 587     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 588     surf_cpu_model_description[cpu_id].model_init_preparse();
 589
 590     int network_id = find_model_description(surf_network_model_description, network_model_name);
 591     surf_network_model_description[network_id].model_init_preparse();
 592   }
 593
 594   XBT_DEBUG("Call host_model_init");
 595   int host_id = find_model_description(surf_host_model_description, host_model_name);
 596   surf_host_model_description[host_id].model_init_preparse();
 597
 598   XBT_DEBUG("Call vm_model_init");
 599   surf_vm_model_init_HL13();
 600
 601   XBT_DEBUG("Call storage_model_init");
 602   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 603   surf_storage_model_description[storage_id].model_init_preparse();
 604 }
 605
 606 /**
 607  * \brief Add an AS to the platform
 608  *
 609  * Add a new autonomous system to the platform. Any elements (such as host,
 610  * router or sub-AS) added after this call and before the corresponding call
 611  * to sg_platf_new_AS_seal() will be added to this AS.
 612  *
 613  * Once this function was called, the configuration concerning the used
 614  * models cannot be changed anymore.
 615  *
 616  * @param AS the parameters defining the AS to build.
 617  */
 618 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 619 {
 620   if (!surf_parse_models_setup_already_called) {
 621     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 622      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 623      *
 624      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 625      * (FIXME: check it out by creating a file beginning with one of these tags)
 626      * but cluster and peer create ASes internally, so putting the code in there is ok.
 627      */
 628     surf_parse_models_setup_already_called = 1;
 629     surf_config_models_setup();
 630   }
 631
 632   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 633                             * any further config now that we created some real content */
 634
 635
 636   /* search the routing model */
 637   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 638   switch(AS->routing){
 639     case A_surfxml_AS_routing_Cluster:
 640       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 641       break;
 642     case A_surfxml_AS_routing_ClusterDragonfly:
 643       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 644       break;
 645     case A_surfxml_AS_routing_ClusterTorus:
 646       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 647       break;
 648     case A_surfxml_AS_routing_ClusterFatTree:
 649       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 650       break;
 651     case A_surfxml_AS_routing_Dijkstra:
 652       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 653       break;
 654     case A_surfxml_AS_routing_DijkstraCache:
 655       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 656       break;
 657     case A_surfxml_AS_routing_Floyd:
 658       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 659       break;
 660     case A_surfxml_AS_routing_Full:
 661       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 662       break;
 663     case A_surfxml_AS_routing_None:
 664       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 665       break;
 666     case A_surfxml_AS_routing_Vivaldi:
 667       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 668       break;
 669     default:
 670       xbt_die("Not a valid model!");
 671       break;
 672   }
 673
 674   if (current_routing == nullptr) { /* it is the first one */
 675     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 676                "All defined components must belong to a AS");
 677     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 678
 679   } else {
 680     /* set the father behavior */
 681     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 682       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 683     /* add to the sons dictionary */
 684     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 685   }
 686
 687   /* set the new current component of the tree */
 688   current_routing = new_as;
 689
 690   if (TRACE_is_enabled())
 691     sg_instr_AS_begin(AS);
 692
 693   return new_as;
 694 }
 695
 696 /**
 697  * \brief Specify that the description of the current AS is finished
 698  *
 699  * Once you've declared all the content of your AS, you have to seal
 700  * it with this call. Your AS is not usable until you call this function.
 701  */
 702 void sg_platf_new_AS_seal()
 703 {
 704   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 705   current_routing->seal();
 706   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 707
 708   if (TRACE_is_enabled())
 709     sg_instr_AS_end();
 710 }
 711
 712 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 713 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 714 {
 715   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id)->pimpl_netpoint;
 716   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id);
 717   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 718              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 719
 720   simgrid::surf::LinkImpl* linkUp   = simgrid::surf::LinkImpl::byName(hostlink->link_up);
 721   simgrid::surf::LinkImpl* linkDown = simgrid::surf::LinkImpl::byName(hostlink->link_down);
 722
 723   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 724   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 725
 726   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 727
 728   if (as_cluster->privateLinks_.find(netpoint->id()) != as_cluster->privateLinks_.end())
 729     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 730
 731   XBT_DEBUG("Push Host_link for host '%s' to position %d", netpoint->cname(), netpoint->id());
 732   as_cluster->privateLinks_.insert({netpoint->id(), {linkUp, linkDown}});
 733 }
 734
 735 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 736 {
 737   tmgr_trace_t tmgr_trace;
 738   if (trace->file && strcmp(trace->file, "") != 0) {
 739     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 740   } else {
 741     xbt_assert(strcmp(trace->pc_data, ""),
 742         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 743     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 744   }
 745   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 746 }