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 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(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, *data;
 135       xbt_dict_foreach (link->properties, cursor, key, data)
 136         l->setProperty(key, data);
 137       xbt_dict_free(&link->properties);
 138     }
 139
 140     if (link->latency_trace)
 141       l->setLatencyTrace(link->latency_trace);
 142     if (link->bandwidth_trace)
 143       l->setBandwidthTrace(link->bandwidth_trace);
 144     if (link->state_trace)
 145       l->setStateTrace(link->state_trace);
 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
 159   // What an inventive way of initializing the AS that I have as ancestor :-(
 160   s_sg_platf_AS_cbarg_t AS;
 161   AS.id = cluster->id;
 162   switch (cluster->topology) {
 163   case SURF_CLUSTER_TORUS:
 164     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 165     break;
 166   case SURF_CLUSTER_DRAGONFLY:
 167     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 168     break;
 169   case SURF_CLUSTER_FAT_TREE:
 170     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 171     break;
 172   default:
 173     AS.routing = A_surfxml_AS_routing_Cluster;
 174     break;
 175   }
 176   sg_platf_new_AS_begin(&AS);
 177   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
 178   current_as->parse_specific_arguments(cluster);
 179
 180   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 181     current_as->linkCountPerNode_++;
 182     current_as->hasLoopback_ = 1;
 183   }
 184
 185   if(cluster->limiter_link!=0){
 186     current_as->linkCountPerNode_++;
 187     current_as->hasLimiter_ = 1;
 188   }
 189
 190   for (int i : *cluster->radicals) {
 191     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 192     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 193
 194     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 195
 196     s_sg_platf_host_cbarg_t host;
 197     memset(&host, 0, sizeof(host));
 198     host.id = host_id;
 199     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 200       xbt_dict_cursor_t cursor=nullptr;
 201       char *key,*data;
 202       host.properties = xbt_dict_new_homogeneous(free);
 203
 204       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 205         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
 206       }
 207     }
 208
 209     host.speed_per_pstate.push_back(cluster->speed);
 210     host.pstate = 0;
 211     host.core_amount = cluster->core_amount;
 212     host.coord = "";
 213     sg_platf_new_host(&host);
 214     XBT_DEBUG("</host>");
 215
 216     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 217
 218     // All links are saved in a matrix;
 219     // every row describes a single node; every node may have multiple links.
 220     // the first column may store a link from x to x if p_has_loopback is set
 221     // the second column may store a limiter link if p_has_limiter is set
 222     // other columns are to store one or more link for the node
 223
 224     //add a loopback link
 225     simgrid::surf::LinkImpl* linkUp   = nullptr;
 226     simgrid::surf::LinkImpl* linkDown = nullptr;
 227     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 228       char *tmp_link = bprintf("%s_loopback", link_id);
 229       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 230
 231       LinkCreationArgs link;
 232       link.id        = tmp_link;
 233       link.bandwidth = cluster->loopback_bw;
 234       link.latency   = cluster->loopback_lat;
 235       link.policy    = SURF_LINK_FATPIPE;
 236       sg_platf_new_link(&link);
 237       linkUp   = simgrid::surf::LinkImpl::byName(tmp_link);
 238       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 239       free(tmp_link);
 240
 241       auto as_cluster = static_cast<ClusterZone*>(current_as);
 242       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
 243     }
 244
 245     //add a limiter link (shared link to account for maximal bandwidth of the node)
 246     linkUp   = nullptr;
 247     linkDown = nullptr;
 248     if(cluster->limiter_link!=0){
 249       char *tmp_link = bprintf("%s_limiter", link_id);
 250       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 251
 252       LinkCreationArgs link;
 253       link.id = tmp_link;
 254       link.bandwidth = cluster->limiter_link;
 255       link.latency = 0;
 256       link.policy = SURF_LINK_SHARED;
 257       sg_platf_new_link(&link);
 258       linkUp = linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
 259       free(tmp_link);
 260       current_as->privateLinks_.insert(
 261           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
 262     }
 263
 264     //call the cluster function that adds the others links
 265     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 266       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
 267     }
 268     else {
 269       current_as->create_links_for_node(cluster, i, rankId,
 270           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 271     }
 272     xbt_free(link_id);
 273     xbt_free(host_id);
 274     rankId++;
 275   }
 276
 277   // Add a router.
 278   XBT_DEBUG(" ");
 279   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 280   if (!cluster->router_id || !strcmp(cluster->router_id, "")) {
 281     char* newid         = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 282     current_as->router_ = sg_platf_new_router(newid, NULL);
 283     free(newid);
 284   } else {
 285     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
 286   }
 287
 288   //Make the backbone
 289   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 290
 291     LinkCreationArgs link;
 292     link.id        = std::string(cluster->id)+ "_backbone";
 293     link.bandwidth = cluster->bb_bw;
 294     link.latency   = cluster->bb_lat;
 295     link.policy    = cluster->bb_sharing_policy;
 296
 297     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
 298     sg_platf_new_link(&link);
 299
 300     routing_cluster_add_backbone(simgrid::surf::LinkImpl::byName(link.id.c_str()));
 301   }
 302
 303   XBT_DEBUG("</AS>");
 304   sg_platf_new_AS_seal();
 305
 306   simgrid::surf::on_cluster(cluster);
 307   delete cluster->radicals;
 308 }
 309
 310 void routing_cluster_add_backbone(simgrid::surf::LinkImpl* bb)
 311 {
 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     std::string hostname = std::string(cabinet->prefix) + std::to_string(radical) + std::string(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.c_str();
 331     host.speed_per_pstate.push_back(cabinet->speed);
 332     sg_platf_new_host(&host);
 333
 334     LinkCreationArgs link;
 335     link.policy    = SURF_LINK_FULLDUPLEX;
 336     link.latency   = cabinet->lat;
 337     link.bandwidth = cabinet->bw;
 338     link.id        = "link_" + hostname;
 339     sg_platf_new_link(&link);
 340
 341     s_sg_platf_host_link_cbarg_t host_link;
 342     memset(&host_link, 0, sizeof(host_link));
 343     host_link.id        = hostname.c_str();
 344     host_link.link_up   = bprintf("link_%s_UP",hostname.c_str());
 345     host_link.link_down = bprintf("link_%s_DOWN",hostname.c_str());
 346     sg_platf_new_hostlink(&host_link);
 347     free((char*)host_link.link_up);
 348     free((char*)host_link.link_down);
 349   }
 350   delete cabinet->radicals;
 351 }
 352
 353 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 354 {
 355   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 356                "Refusing to add a second storage named \"%s\"", storage->id);
 357
 358   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 359   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 360
 361   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 362       storage->id,
 363       storage->type_id,
 364       storage->content);
 365
 366   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 367
 368   // if storage content is not specified use the content of storage_type if any
 369   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 370     storage->content = ((storage_type_t) stype)->content;
 371     storage->content_type = ((storage_type_t) stype)->content_type;
 372     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 373         storage->id,((storage_type_t) stype)->content_type,
 374         ((storage_type_t) stype)->type_id);
 375   }
 376
 377   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 378       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 379       "\n\t\tproperties '%p''\n",
 380       storage->id,
 381       ((storage_type_t) stype)->model,
 382       ((storage_type_t) stype)->type_id,
 383       storage->content,
 384       storage->content_type,
 385     storage->properties);
 386
 387   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
 388                                              storage->content_type, storage->attach);
 389
 390   if (storage->properties) {
 391     xbt_dict_cursor_t cursor = nullptr;
 392     char *key, *data;
 393     xbt_dict_foreach (storage->properties, cursor, key, data)
 394       s->setProperty(key, data);
 395     xbt_dict_free(&storage->properties);
 396   }
 397 }
 398 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 399
 400   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 401                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 402
 403   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 404   stype->model = xbt_strdup(storage_type->model);
 405   stype->properties = storage_type->properties;
 406   stype->content = xbt_strdup(storage_type->content);
 407   stype->content_type = xbt_strdup(storage_type->content_type);
 408   stype->type_id = xbt_strdup(storage_type->id);
 409   stype->size = storage_type->size;
 410   stype->model_properties = storage_type->model_properties;
 411
 412   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 413       "content '%s', and content_type '%s'",
 414       stype->type_id,
 415       stype->model,
 416       storage_type->content,
 417       storage_type->content_type);
 418
 419   xbt_lib_set(storage_type_lib,
 420       stype->type_id,
 421       ROUTING_STORAGE_TYPE_LEVEL,
 422       (void *) stype);
 423 }
 424
 425 static void mount_free(void *p)
 426 {
 427   mount_t mnt = (mount_t) p;
 428   xbt_free(mnt->name);
 429 }
 430
 431 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 432   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 433       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 434
 435   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 436
 437   s_mount_t mnt;
 438   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 439   mnt.name = xbt_strdup(mount->name);
 440
 441   if(!mount_list){
 442     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 443     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 444   }
 445   xbt_dynar_push(mount_list, &mnt);
 446 }
 447
 448 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 449 {
 450   routing_get_current()->addRoute(route);
 451 }
 452
 453 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 454 {
 455   routing_get_current()->addBypassRoute(bypassRoute);
 456 }
 457
 458 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 459 {
 460   sg_host_t host = sg_host_by_name(process->host);
 461   if (!host) {
 462     // The requested host does not exist. Do a nice message to the user
 463     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 464     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 465     free(tmp);
 466     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 467     simgrid::s4u::Host* host;
 468     unsigned int cursor;
 469     xbt_dynar_foreach(all_hosts,cursor, host) {
 470       xbt_strbuff_append(msg, host->cname());
 471       xbt_strbuff_append(msg,"', '");
 472       if (msg->used > 1024) {
 473         msg->data[msg->used-3]='\0';
 474         msg->used -= 3;
 475
 476         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 477         break;
 478       }
 479     }
 480     msg->data[msg->used-3]='\0';
 481     xbt_die("%s", msg->data);
 482   }
 483   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 484   xbt_assert(factory, "Function '%s' unknown", process->function);
 485
 486   double start_time = process->start_time;
 487   double kill_time  = process->kill_time;
 488   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 489
 490   std::vector<std::string> args(process->argv, process->argv + process->argc);
 491   std::function<void()> code = factory(std::move(args));
 492
 493   smx_process_arg_t arg = nullptr;
 494
 495   arg = new simgrid::simix::ProcessArg();
 496   arg->name = std::string(process->argv[0]);
 497   arg->code = code;
 498   arg->data = nullptr;
 499   arg->host = host;
 500   arg->kill_time = kill_time;
 501   arg->properties = current_property_set;
 502
 503   host->extension<simgrid::simix::Host>()->boot_processes.push_back(arg);
 504
 505   if (start_time > SIMIX_get_clock()) {
 506
 507     arg = new simgrid::simix::ProcessArg();
 508     arg->name = std::string(process->argv[0]);
 509     arg->code = std::move(code);
 510     arg->data = nullptr;
 511     arg->host = host;
 512     arg->kill_time = kill_time;
 513     arg->properties = current_property_set;
 514
 515     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
 516     SIMIX_timer_set(start_time, [arg, auto_restart]() {
 517       smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(arg->code), arg->data,
 518                                                                 arg->host, arg->properties, nullptr);
 519       if (arg->kill_time >= 0)
 520         simcall_process_set_kill_time(actor, arg->kill_time);
 521       if (auto_restart)
 522         SIMIX_process_auto_restart_set(actor, auto_restart);
 523       delete arg;
 524     });
 525   } else {                      // start_time <= SIMIX_get_clock()
 526     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
 527
 528     smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(code), nullptr, host,
 529                                                               current_property_set, nullptr);
 530
 531     /* The actor creation will fail if the host is currently dead, but that's fine */
 532     if (actor != nullptr) {
 533       if (arg->kill_time >= 0)
 534         simcall_process_set_kill_time(actor, arg->kill_time);
 535       if (auto_restart)
 536         SIMIX_process_auto_restart_set(actor, auto_restart);
 537     }
 538   }
 539   current_property_set = nullptr;
 540 }
 541
 542 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 543 {
 544   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
 545   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
 546
 547   std::vector<double> speedPerPstate;
 548   speedPerPstate.push_back(peer->speed);
 549   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1, nullptr);
 550
 551   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
 552
 553   /* Change from the defaults */
 554   if (peer->state_trace)
 555     host->pimpl_cpu->setStateTrace(peer->state_trace);
 556   if (peer->speed_trace)
 557     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
 558 }
 559
 560 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 561
 562 void sg_platf_end() {
 563   simgrid::s4u::onPlatformCreated();
 564 }
 565
 566 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 567 static void surf_config_models_setup()
 568 {
 569   const char* host_model_name    = xbt_cfg_get_string("host/model");
 570   const char* network_model_name = xbt_cfg_get_string("network/model");
 571   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 572   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 573
 574   /* The compound host model is needed when using non-default net/cpu models */
 575   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 576       xbt_cfg_is_default_value("host/model")) {
 577     host_model_name = "compound";
 578     xbt_cfg_set_string("host/model", host_model_name);
 579   }
 580
 581   XBT_DEBUG("host model: %s", host_model_name);
 582   if (!strcmp(host_model_name, "compound")) {
 583     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 584     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 585
 586     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 587     surf_cpu_model_description[cpu_id].model_init_preparse();
 588
 589     int network_id = find_model_description(surf_network_model_description, network_model_name);
 590     surf_network_model_description[network_id].model_init_preparse();
 591   }
 592
 593   XBT_DEBUG("Call host_model_init");
 594   int host_id = find_model_description(surf_host_model_description, host_model_name);
 595   surf_host_model_description[host_id].model_init_preparse();
 596
 597   XBT_DEBUG("Call vm_model_init");
 598   surf_vm_model_init_HL13();
 599
 600   XBT_DEBUG("Call storage_model_init");
 601   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 602   surf_storage_model_description[storage_id].model_init_preparse();
 603 }
 604
 605 /**
 606  * \brief Add an AS to the platform
 607  *
 608  * Add a new autonomous system to the platform. Any elements (such as host,
 609  * router or sub-AS) added after this call and before the corresponding call
 610  * to sg_platf_new_AS_seal() will be added to this AS.
 611  *
 612  * Once this function was called, the configuration concerning the used
 613  * models cannot be changed anymore.
 614  *
 615  * @param AS the parameters defining the AS to build.
 616  */
 617 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 618 {
 619   if (!surf_parse_models_setup_already_called) {
 620     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 621      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 622      *
 623      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 624      * (FIXME: check it out by creating a file beginning with one of these tags)
 625      * but cluster and peer create ASes internally, so putting the code in there is ok.
 626      */
 627     surf_parse_models_setup_already_called = 1;
 628     surf_config_models_setup();
 629   }
 630
 631   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 632                             * any further config now that we created some real content */
 633
 634
 635   /* search the routing model */
 636   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
 637   switch(AS->routing){
 638     case A_surfxml_AS_routing_Cluster:
 639       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
 640       break;
 641     case A_surfxml_AS_routing_ClusterDragonfly:
 642       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
 643       break;
 644     case A_surfxml_AS_routing_ClusterTorus:
 645       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
 646       break;
 647     case A_surfxml_AS_routing_ClusterFatTree:
 648       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
 649       break;
 650     case A_surfxml_AS_routing_Dijkstra:
 651       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
 652       break;
 653     case A_surfxml_AS_routing_DijkstraCache:
 654       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
 655       break;
 656     case A_surfxml_AS_routing_Floyd:
 657       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
 658       break;
 659     case A_surfxml_AS_routing_Full:
 660       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
 661       break;
 662     case A_surfxml_AS_routing_None:
 663       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
 664       break;
 665     case A_surfxml_AS_routing_Vivaldi:
 666       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
 667       break;
 668     default:
 669       xbt_die("Not a valid model!");
 670       break;
 671   }
 672
 673   if (current_routing == nullptr) { /* it is the first one */
 674     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
 675                "All defined components must belong to a AS");
 676     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
 677
 678   } else {
 679     /* set the father behavior */
 680     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
 681       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
 682     /* add to the sons dictionary */
 683     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 684   }
 685
 686   /* set the new current component of the tree */
 687   current_routing = new_as;
 688
 689   if (TRACE_is_enabled())
 690     sg_instr_AS_begin(AS);
 691
 692   return new_as;
 693 }
 694
 695 /**
 696  * \brief Specify that the description of the current AS is finished
 697  *
 698  * Once you've declared all the content of your AS, you have to seal
 699  * it with this call. Your AS is not usable until you call this function.
 700  */
 701 void sg_platf_new_AS_seal()
 702 {
 703   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 704   current_routing->seal();
 705   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
 706
 707   if (TRACE_is_enabled())
 708     sg_instr_AS_end();
 709 }
 710
 711 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 712 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 713 {
 714   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id)->pimpl_netpoint;
 715   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id);
 716   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
 717              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 718
 719   simgrid::surf::LinkImpl* linkUp   = simgrid::surf::LinkImpl::byName(hostlink->link_up);
 720   simgrid::surf::LinkImpl* linkDown = simgrid::surf::LinkImpl::byName(hostlink->link_down);
 721
 722   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
 723   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
 724
 725   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
 726
 727   if (as_cluster->privateLinks_.find(netpoint->id()) != as_cluster->privateLinks_.end())
 728     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 729
 730   XBT_DEBUG("Push Host_link for host '%s' to position %d", netpoint->cname(), netpoint->id());
 731   as_cluster->privateLinks_.insert({netpoint->id(), {linkUp, linkDown}});
 732 }
 733
 734 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 735 {
 736   tmgr_trace_t tmgr_trace;
 737   if (trace->file && strcmp(trace->file, "") != 0) {
 738     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 739   } else {
 740     xbt_assert(strcmp(trace->pc_data, ""),
 741         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 742     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 743   }
 744   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
 745 }