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
  28 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  29
  30 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
  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,*data;
  70     xbt_dict_foreach (args->properties, cursor, key, data)
  71       props[key] = data;
  72     xbt_dict_free(&args->properties);
  73   }
  74
  75   simgrid::s4u::Host* host =
  76       routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount, &props);
  77
  78   host->pimpl_->storage_ = mount_list;
  79   xbt_lib_set(storage_lib, args->id, ROUTING_STORAGE_HOST_LEVEL, static_cast<void*>(mount_list));
  80   mount_list = nullptr;
  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(sg_platf_link_cbarg_t link){
 119   std::vector<char*> names;
 120
 121   if (link->policy == SURF_LINK_FULLDUPLEX) {
 122     names.push_back(bprintf("%s_UP", link->id));
 123     names.push_back(bprintf("%s_DOWN", link->id));
 124   } else {
 125     names.push_back(xbt_strdup(link->id));
 126   }
 127   for (auto link_name : names) {
 128     Link* l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
 129
 130     if (link->properties) {
 131       xbt_dict_cursor_t cursor = nullptr;
 132       char *key, *data;
 133       xbt_dict_foreach (link->properties, cursor, key, data)
 134         l->setProperty(key, data);
 135       xbt_dict_free(&link->properties);
 136     }
 137
 138     if (link->latency_trace)
 139       l->setLatencyTrace(link->latency_trace);
 140     if (link->bandwidth_trace)
 141       l->setBandwidthTrace(link->bandwidth_trace);
 142     if (link->state_trace)
 143       l->setStateTrace(link->state_trace);
 144
 145     xbt_free(link_name);
 146   }
 147 }
 148
 149 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 150 {
 151   using simgrid::kernel::routing::ClusterZone;
 152   using simgrid::kernel::routing::DragonflyZone;
 153   using simgrid::kernel::routing::FatTreeZone;
 154   using simgrid::kernel::routing::TorusZone;
 155
 156   int rankId=0;
 157
 158   s_sg_platf_link_cbarg_t link;
 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->speed);
 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,*data;
 203       host.properties = xbt_dict_new_homogeneous(free);
 204
 205       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 206         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 207       }
 208     }
 209
 210     host.speed_per_pstate.push_back(cluster->speed);
 211     host.pstate = 0;
 212     host.core_amount = cluster->core_amount;
 213     host.coord = "";
 214     sg_platf_new_host(&host);
 215     XBT_DEBUG("</host>");
 216
 217     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 218
 219     // All links are saved in a matrix;
 220     // every row describes a single node; every node may have multiple links.
 221     // the first column may store a link from x to x if p_has_loopback is set
 222     // the second column may store a limiter link if p_has_limiter is set
 223     // other columns are to store one or more link for the node
 224
 225     //add a loopback link
 226     Link* linkUp   = nullptr;
 227     Link* linkDown = nullptr;
 228     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 229       char *tmp_link = bprintf("%s_loopback", link_id);
 230       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 231
 232       memset(&link, 0, sizeof(link));
 233       link.id        = tmp_link;
 234       link.bandwidth = cluster->loopback_bw;
 235       link.latency   = cluster->loopback_lat;
 236       link.policy    = SURF_LINK_FATPIPE;
 237       sg_platf_new_link(&link);
 238       linkUp   = Link::byName(tmp_link);
 239       linkDown = Link::byName(tmp_link);
 240       free(tmp_link);
 241
 242       auto as_cluster = static_cast<ClusterZone*>(current_as);
 243       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 244     }
 245
 246     //add a limiter link (shared link to account for maximal bandwidth of the node)
 247     linkUp   = nullptr;
 248     linkDown = nullptr;
 249     if(cluster->limiter_link!=0){
 250       char *tmp_link = bprintf("%s_limiter", link_id);
 251       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 252
 253       memset(&link, 0, sizeof(link));
 254       link.id = tmp_link;
 255       link.bandwidth = cluster->limiter_link;
 256       link.latency = 0;
 257       link.policy = SURF_LINK_SHARED;
 258       sg_platf_new_link(&link);
 259       linkUp = linkDown = Link::byName(tmp_link);
 260       free(tmp_link);
 261       current_as->privateLinks_.insert(
 262           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 263     }
 264
 265     //call the cluster function that adds the others links
 266     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 267       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 268     }
 269     else {
 270       current_as->create_links_for_node(cluster, i, rankId,
 271           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 272     }
 273     xbt_free(link_id);
 274     xbt_free(host_id);
 275     rankId++;
 276   }
 277
 278   // Add a router.
 279   XBT_DEBUG(" ");
 280   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 281   if (!cluster->router_id || !strcmp(cluster->router_id, "")) {
 282     char* newid         = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 283     current_as->router_ = sg_platf_new_router(newid, NULL);
 284     free(newid);
 285   } else {
 286     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 287   }
 288
 289   //Make the backbone
 290   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 291
 292     memset(&link, 0, sizeof(link));
 293     link.id        = bprintf("%s_backbone", cluster->id);
 294     link.bandwidth = cluster->bb_bw;
 295     link.latency   = cluster->bb_lat;
 296     link.policy    = cluster->bb_sharing_policy;
 297
 298     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 299     sg_platf_new_link(&link);
 300
 301     routing_cluster_add_backbone(Link::byName(link.id));
 302     free((char*)link.id);
 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 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 312   simgrid::kernel::routing::ClusterZone* cluster =
 313       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 314
 315   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 316   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 317
 318   cluster->backbone_ = bb;
 319   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 320 }
 321
 322 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 323 {
 324   for (int radical : *cabinet->radicals) {
 325     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 326     s_sg_platf_host_cbarg_t host;
 327     memset(&host, 0, sizeof(host));
 328     host.pstate           = 0;
 329     host.core_amount      = 1;
 330     host.id               = hostname;
 331     host.speed_per_pstate.push_back(cabinet->speed);
 332     sg_platf_new_host(&host);
 333
 334     s_sg_platf_link_cbarg_t link;
 335     memset(&link, 0, sizeof(link));
 336     link.policy    = SURF_LINK_FULLDUPLEX;
 337     link.latency   = cabinet->lat;
 338     link.bandwidth = cabinet->bw;
 339     link.id        = bprintf("link_%s",hostname);
 340     sg_platf_new_link(&link);
 341     free((char*)link.id);
 342
 343     s_sg_platf_host_link_cbarg_t host_link;
 344     memset(&host_link, 0, sizeof(host_link));
 345     host_link.id        = hostname;
 346     host_link.link_up   = bprintf("link_%s_UP",hostname);
 347     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 348     sg_platf_new_hostlink(&host_link);
 349     free((char*)host_link.link_up);
 350     free((char*)host_link.link_down);
 351
 352     free(hostname);
 353   }
 354   delete cabinet->radicals;
 355 }
 356
 357 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 358 {
 359   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 360                "Refusing to add a second storage named \"%s\"", storage->id);
 361
 362   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 363   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 364
 365   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 366       storage->id,
 367       storage->type_id,
 368       storage->content);
 369
 370   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 371
 372   // if storage content is not specified use the content of storage_type if any
 373   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 374     storage->content = ((storage_type_t) stype)->content;
 375     storage->content_type = ((storage_type_t) stype)->content_type;
 376     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 377         storage->id,((storage_type_t) stype)->content_type,
 378         ((storage_type_t) stype)->type_id);
 379   }
 380
 381   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 382       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 383       "\n\t\tproperties '%p''\n",
 384       storage->id,
 385       ((storage_type_t) stype)->model,
 386       ((storage_type_t) stype)->type_id,
 387       storage->content,
 388       storage->content_type,
 389     storage->properties);
 390
 391   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
 392                                              storage->content_type, storage->attach);
 393
 394   if (storage->properties) {
 395     xbt_dict_cursor_t cursor = nullptr;
 396     char *key, *data;
 397     xbt_dict_foreach (storage->properties, cursor, key, data)
 398       s->setProperty(key, data);
 399     xbt_dict_free(&storage->properties);
 400   }
 401 }
 402 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 403
 404   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 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->content_type = xbt_strdup(storage_type->content_type);
 412   stype->type_id = xbt_strdup(storage_type->id);
 413   stype->size = storage_type->size;
 414   stype->model_properties = storage_type->model_properties;
 415
 416   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 417       "content '%s', and content_type '%s'",
 418       stype->type_id,
 419       stype->model,
 420       storage_type->content,
 421       storage_type->content_type);
 422
 423   xbt_lib_set(storage_type_lib,
 424       stype->type_id,
 425       ROUTING_STORAGE_TYPE_LEVEL,
 426       (void *) stype);
 427 }
 428
 429 static void mount_free(void *p)
 430 {
 431   mount_t mnt = (mount_t) p;
 432   xbt_free(mnt->name);
 433 }
 434
 435 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 436   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 437       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 438
 439   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 440
 441   s_mount_t mnt;
 442   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 443   mnt.name = xbt_strdup(mount->name);
 444
 445   if(!mount_list){
 446     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 447     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 448   }
 449   xbt_dynar_push(mount_list, &mnt);
 450 }
 451
 452 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 453 {
 454   routing_get_current()->addRoute(route);
 455 }
 456
 457 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 458 {
 459   routing_get_current()->addBypassRoute(bypassRoute);
 460 }
 461
 462 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 463 {
 464   sg_host_t host = sg_host_by_name(process->host);
 465   if (!host) {
 466     // The requested host does not exist. Do a nice message to the user
 467     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 468     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 469     free(tmp);
 470     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 471     simgrid::s4u::Host* host;
 472     unsigned int cursor;
 473     xbt_dynar_foreach(all_hosts,cursor, host) {
 474       xbt_strbuff_append(msg, host->cname());
 475       xbt_strbuff_append(msg,"', '");
 476       if (msg->used > 1024) {
 477         msg->data[msg->used-3]='\0';
 478         msg->used -= 3;
 479
 480         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 481         break;
 482       }
 483     }
 484     msg->data[msg->used-3]='\0';
 485     xbt_die("%s", msg->data);
 486   }
 487   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 488   xbt_assert(factory, "Function '%s' unknown", process->function);
 489
 490   double start_time = process->start_time;
 491   double kill_time  = process->kill_time;
 492   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 493
 494   std::vector<std::string> args(process->argv, process->argv + process->argc);
 495   std::function<void()> code = factory(std::move(args));
 496
 497   smx_process_arg_t arg = nullptr;
 498   smx_actor_t process_created = nullptr;
 499
 500   arg = new simgrid::simix::ProcessArg();
 501   arg->name = std::string(process->argv[0]);
 502   arg->code = code;
 503   arg->data = nullptr;
 504   arg->host = host;
 505   arg->kill_time = kill_time;
 506   arg->properties = current_property_set;
 507
 508   sg_host_simix(host)->boot_processes.push_back(arg);
 509
 510   if (start_time > SIMIX_get_clock()) {
 511
 512     arg = new simgrid::simix::ProcessArg();
 513     arg->name = std::string(process->argv[0]);
 514     arg->code = std::move(code);
 515     arg->data = nullptr;
 516     arg->host = host;
 517     arg->kill_time = kill_time;
 518     arg->properties = current_property_set;
 519
 520     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 521     SIMIX_timer_set(start_time, [=]() {
 522       simix_global->create_process_function(
 523                                             arg->name.c_str(),
 524                                             std::move(arg->code),
 525                                             arg->data,
 526                                             arg->host,
 527                                             arg->kill_time,
 528                                             arg->properties,
 529                                             arg->auto_restart,
 530                                             nullptr);
 531       delete arg;
 532     });
 533   } else {                      // start_time <= SIMIX_get_clock()
 534     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 535
 536     process_created = simix_global->create_process_function(
 537         arg->name.c_str(), std::move(code), nullptr,
 538         host, kill_time,
 539         current_property_set, auto_restart, nullptr);
 540
 541     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 542     if (!process_created) {
 543       return;
 544     }
 545   }
 546   current_property_set = nullptr;
 547 }
 548
 549 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 550 {
 551   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 552   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 553
 554   std::vector<double> speedPerPstate;
 555   speedPerPstate.push_back(peer->speed);
 556   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1, nullptr);
 557
 558   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
 559
 560   /* Change from the defaults */
 561   if (peer->state_trace)
 562     host->pimpl_cpu->setStateTrace(peer->state_trace);
 563   if (peer->speed_trace)
 564     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 565 }
 566
 567 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 568
 569 void sg_platf_end() {
 570   simgrid::s4u::onPlatformCreated();
 571 }
 572
 573 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 574 static void surf_config_models_setup()
 575 {
 576   const char* host_model_name    = xbt_cfg_get_string("host/model");
 577   const char* network_model_name = xbt_cfg_get_string("network/model");
 578   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 579   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 580
 581   /* The compound host model is needed when using non-default net/cpu models */
 582   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 583       xbt_cfg_is_default_value("host/model")) {
 584     host_model_name = "compound";
 585     xbt_cfg_set_string("host/model", host_model_name);
 586   }
 587
 588   XBT_DEBUG("host model: %s", host_model_name);
 589   if (!strcmp(host_model_name, "compound")) {
 590     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 591     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 592
 593     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 594     surf_cpu_model_description[cpu_id].model_init_preparse();
 595
 596     int network_id = find_model_description(surf_network_model_description, network_model_name);
 597     surf_network_model_description[network_id].model_init_preparse();
 598   }
 599
 600   XBT_DEBUG("Call host_model_init");
 601   int host_id = find_model_description(surf_host_model_description, host_model_name);
 602   surf_host_model_description[host_id].model_init_preparse();
 603
 604   XBT_DEBUG("Call vm_model_init");
 605   surf_vm_model_init_HL13();
 606
 607   XBT_DEBUG("Call storage_model_init");
 608   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 609   surf_storage_model_description[storage_id].model_init_preparse();
 610 }
 611
 612 /**
 613  * \brief Add an AS to the platform
 614  *
 615  * Add a new autonomous system to the platform. Any elements (such as host,
 616  * router or sub-AS) added after this call and before the corresponding call
 617  * to sg_platf_new_AS_seal() will be added to this AS.
 618  *
 619  * Once this function was called, the configuration concerning the used
 620  * models cannot be changed anymore.
 621  *
 622  * @param AS the parameters defining the AS to build.
 623  */
 624 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 625 {
 626   if (!surf_parse_models_setup_already_called) {
 627     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 628      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 629      *
 630      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 631      * (FIXME: check it out by creating a file beginning with one of these tags)
 632      * but cluster and peer create ASes internally, so putting the code in there is ok.
 633      */
 634     surf_parse_models_setup_already_called = 1;
 635     surf_config_models_setup();
 636   }
 637
 638   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 639                             * any further config now that we created some real content */
 640
 641
 642   /* search the routing model */
 643   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 644   switch(AS->routing){
 645     case A_surfxml_AS_routing_Cluster:
 646       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 647       break;
 648     case A_surfxml_AS_routing_ClusterDragonfly:
 649       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 650       break;
 651     case A_surfxml_AS_routing_ClusterTorus:
 652       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 653       break;
 654     case A_surfxml_AS_routing_ClusterFatTree:
 655       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 656       break;
 657     case A_surfxml_AS_routing_Dijkstra:
 658       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 659       break;
 660     case A_surfxml_AS_routing_DijkstraCache:
 661       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 662       break;
 663     case A_surfxml_AS_routing_Floyd:
 664       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 665       break;
 666     case A_surfxml_AS_routing_Full:
 667       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 668       break;
 669     case A_surfxml_AS_routing_None:
 670       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 671       break;
 672     case A_surfxml_AS_routing_Vivaldi:
 673       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 674       break;
 675     default:
 676       xbt_die("Not a valid model!");
 677       break;
 678   }
 679
 680   if (current_routing == nullptr) { /* it is the first one */
 681     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 682                "All defined components must belong to a AS");
 683     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 684
 685   } else {
 686     /* set the father behavior */
 687     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 688       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 689     /* add to the sons dictionary */
 690     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 691   }
 692
 693   /* set the new current component of the tree */
 694   current_routing = new_as;
 695
 696   if (TRACE_is_enabled())
 697     sg_instr_AS_begin(AS);
 698
 699   return new_as;
 700 }
 701
 702 /**
 703  * \brief Specify that the description of the current AS is finished
 704  *
 705  * Once you've declared all the content of your AS, you have to seal
 706  * it with this call. Your AS is not usable until you call this function.
 707  */
 708 void sg_platf_new_AS_seal()
 709 {
 710   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 711   current_routing->seal();
 712   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 713
 714   if (TRACE_is_enabled())
 715     sg_instr_AS_end();
 716 }
 717
 718 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 719 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 720 {
 721   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id)->pimpl_netpoint;
 722   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id);
 723   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 724              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 725
 726   simgrid::surf::Link* linkUp   = Link::byName(hostlink->link_up);
 727   simgrid::surf::Link* linkDown = Link::byName(hostlink->link_down);
 728
 729   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 730   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 731
 732   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 733
 734   if (as_cluster->privateLinks_.find(netpoint->id()) != as_cluster->privateLinks_.end())
 735     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 736
 737   XBT_DEBUG("Push Host_link for host '%s' to position %d", netpoint->cname(), netpoint->id());
 738   as_cluster->privateLinks_.insert({netpoint->id(), {linkUp, linkDown}});
 739 }
 740
 741 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 742 {
 743   tmgr_trace_t tmgr_trace;
 744   if (trace->file && strcmp(trace->file, "") != 0) {
 745     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 746   } else {
 747     xbt_assert(strcmp(trace->pc_data, ""),
 748         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 749     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 750   }
 751   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 752 }