src/surf/sg_platf.cpp

   1 /* Copyright (c) 2006-2014. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "xbt/misc.h"
   8 #include "xbt/log.h"
   9 #include "xbt/str.h"
  10 #include "xbt/dict.h"
  11 #include "xbt/RngStream.h"
  12 #include <xbt/functional.hpp>
  13 #include <xbt/signal.hpp>
  14 #include "src/surf/HostImpl.hpp"
  15 #include "surf/surf.h"
  16
  17 #include "src/simix/smx_private.h"
  18
  19 #include "src/include/simgrid/sg_config.h"
  20 #include "src/surf/xml/platf_private.hpp"
  21
  22 #include "src/surf/cpu_interface.hpp"
  23 #include "src/surf/network_interface.hpp"
  24 #include "surf/surf_routing.h" // FIXME: brain dead public header
  25
  26 #include "src/kernel/routing/AsImpl.hpp"
  27 #include "src/kernel/routing/AsCluster.hpp"
  28 #include "src/kernel/routing/AsClusterTorus.hpp"
  29 #include "src/kernel/routing/AsClusterFatTree.hpp"
  30 #include "src/kernel/routing/AsClusterDragonfly.hpp"
  31 #include "src/kernel/routing/AsDijkstra.hpp"
  32 #include "src/kernel/routing/AsFloyd.hpp"
  33 #include "src/kernel/routing/AsFull.hpp"
  34 #include "src/kernel/routing/AsNone.hpp"
  35 #include "src/kernel/routing/AsVivaldi.hpp"
  36
  37 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
  38
  39 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
  40
  41 namespace simgrid {
  42 namespace surf {
  43
  44 simgrid::xbt::signal<void(sg_platf_link_cbarg_t)> on_link;
  45 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
  46 simgrid::xbt::signal<void(void)> on_postparse;
  47
  48 }
  49 }
  50
  51 static int surf_parse_models_setup_already_called = 0;
  52
  53 /** The current AS in the parsing */
  54 static simgrid::kernel::routing::AsImpl *current_routing = nullptr;
  55 static simgrid::kernel::routing::AsImpl *routing_get_current()
  56 {
  57   return current_routing;
  58 }
  59
  60 /** Module management function: creates all internal data structures */
  61 void sg_platf_init() {
  62 }
  63
  64 /** Module management function: frees all internal data structures */
  65 void sg_platf_exit() {
  66   simgrid::surf::on_link.disconnect_all_slots();
  67   simgrid::surf::on_cluster.disconnect_all_slots();
  68   simgrid::surf::on_postparse.disconnect_all_slots();
  69
  70   /* make sure that we will reinit the models while loading the platf once reinited */
  71   surf_parse_models_setup_already_called = 0;
  72   surf_parse_lex_destroy();
  73 }
  74
  75 /** @brief Add an "host" to the current AS */
  76 void sg_platf_new_host(sg_platf_host_cbarg_t host)
  77 {
  78   xbt_assert(sg_host_by_name(host->id) == nullptr, "Refusing to create a second host named '%s'.", host->id);
  79
  80   simgrid::kernel::routing::AsImpl* current_routing = routing_get_current();
  81   if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
  82     current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::base;
  83
  84   simgrid::kernel::routing::NetCard *netcard =
  85       new simgrid::kernel::routing::NetCardImpl(host->id, simgrid::kernel::routing::NetCard::Type::Host, current_routing);
  86
  87   sg_host_t h = simgrid::s4u::Host::by_name_or_create(host->id);
  88   h->pimpl_netcard = netcard;
  89
  90   if(mount_list) {
  91     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
  92     mount_list = nullptr;
  93   }
  94
  95   if (host->coord && strcmp(host->coord, "")) {
  96     unsigned int cursor;
  97     char*str;
  98
  99     xbt_assert(COORD_HOST_LEVEL, "To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 100     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 101     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 102     xbt_assert(xbt_dynar_length(ctn_str)==3,"Coordinates of %s must have 3 dimensions", host->id);
 103
 104     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),nullptr);
 105     xbt_dynar_foreach(ctn_str,cursor, str) {
 106       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
 107       xbt_dynar_push(ctn,&val);
 108     }
 109     xbt_dynar_free(&ctn_str);
 110     xbt_dynar_shrink(ctn, 0);
 111     h->extension_set(COORD_HOST_LEVEL, (void *) ctn);
 112   }
 113
 114   simgrid::surf::Cpu *cpu = surf_cpu_model_pm->createCpu( h, &host->speed_per_pstate, host->core_amount);
 115   if (host->state_trace)
 116     cpu->setStateTrace(host->state_trace);
 117   if (host->speed_trace)
 118     cpu->setSpeedTrace(host->speed_trace);
 119   surf_host_model->createHost(host->id, netcard, cpu)->attach(h);
 120
 121   if (host->properties) {
 122     xbt_dict_cursor_t cursor=nullptr;
 123     char *key,*data;
 124     xbt_dict_foreach(host->properties,cursor,key,data)
 125       h->setProperty(key,data);
 126     xbt_dict_free(&host->properties);
 127   }
 128
 129   if (host->pstate != 0)
 130     cpu->setPState(host->pstate);
 131
 132   simgrid::s4u::Host::onCreation(*h);
 133
 134   if (TRACE_is_enabled() && TRACE_needs_platform())
 135     sg_instr_new_host(host);
 136 }
 137
 138 /** @brief Add a "router" to the network element list */
 139 void sg_platf_new_router(sg_platf_router_cbarg_t router)
 140 {
 141   using simgrid::kernel::routing::AsCluster;
 142   simgrid::kernel::routing::AsImpl* current_routing = routing_get_current();
 143
 144   if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
 145     current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::base;
 146   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 147              "Refusing to create a router named '%s': this name already describes a node.", router->id);
 148
 149   simgrid::kernel::routing::NetCard* netcard =
 150     new simgrid::kernel::routing::NetCardImpl(router->id, simgrid::kernel::routing::NetCard::Type::Router, current_routing);
 151   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, netcard);
 152   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
 153
 154   if (router->coord && strcmp(router->coord, "")) {
 155     unsigned int cursor;
 156     char*str;
 157
 158     xbt_assert(COORD_ASR_LEVEL, "To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 159     /* Pre-parse the host coordinates */
 160     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 161     xbt_assert(xbt_dynar_length(ctn_str)==3,"Coordinates of %s must have 3 dimensions", router->id);
 162     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),nullptr);
 163     xbt_dynar_foreach(ctn_str,cursor, str) {
 164       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
 165       xbt_dynar_push(ctn,&val);
 166     }
 167     xbt_dynar_free(&ctn_str);
 168     xbt_dynar_shrink(ctn, 0);
 169     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 170   }
 171
 172   auto cluster = dynamic_cast<AsCluster*>(current_routing);
 173   if(cluster != nullptr)
 174     cluster->router_ = static_cast<simgrid::kernel::routing::NetCard*>(xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL));
 175
 176   if (TRACE_is_enabled() && TRACE_needs_platform())
 177     sg_instr_new_router(router);
 178 }
 179
 180 void sg_platf_new_link(sg_platf_link_cbarg_t link){
 181   std::vector<char*> names;
 182
 183   if (link->policy == SURF_LINK_FULLDUPLEX) {
 184     names.push_back(bprintf("%s_UP", link->id));
 185     names.push_back(bprintf("%s_DOWN", link->id));
 186   } else {
 187     names.push_back(xbt_strdup(link->id));
 188   }
 189   for (auto link_name : names) {
 190     Link *l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy, link->properties);
 191
 192     if (link->latency_trace)
 193       l->setLatencyTrace(link->latency_trace);
 194     if (link->bandwidth_trace)
 195       l->setBandwidthTrace(link->bandwidth_trace);
 196     if (link->state_trace)
 197       l->setStateTrace(link->state_trace);
 198
 199     xbt_free(link_name);
 200   }
 201
 202   simgrid::surf::on_link(link);
 203 }
 204
 205 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
 206 {
 207   using simgrid::kernel::routing::AsCluster;
 208   using simgrid::kernel::routing::AsClusterDragonfly;
 209   using simgrid::kernel::routing::AsClusterFatTree;
 210   using simgrid::kernel::routing::AsClusterTorus;
 211
 212   int rankId=0;
 213
 214   s_sg_platf_link_cbarg_t link;
 215
 216   // What an inventive way of initializing the AS that I have as ancestor :-(
 217   s_sg_platf_AS_cbarg_t AS;
 218   AS.id = cluster->id;
 219   switch (cluster->topology) {
 220   case SURF_CLUSTER_TORUS:
 221     AS.routing = A_surfxml_AS_routing_ClusterTorus;
 222     break;
 223   case SURF_CLUSTER_DRAGONFLY:
 224     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
 225     break;
 226   case SURF_CLUSTER_FAT_TREE:
 227     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
 228     break;
 229   default:
 230     AS.routing = A_surfxml_AS_routing_Cluster;
 231     break;
 232   }
 233   sg_platf_new_AS_begin(&AS);
 234   simgrid::kernel::routing::AsCluster *current_as = static_cast<AsCluster*>(routing_get_current());
 235   current_as->parse_specific_arguments(cluster);
 236
 237   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 238     current_as->linkCountPerNode_++;
 239     current_as->hasLoopback_ = 1;
 240   }
 241
 242   if(cluster->limiter_link!=0){
 243     current_as->linkCountPerNode_++;
 244     current_as->hasLimiter_ = 1;
 245   }
 246
 247   for (int i : *cluster->radicals) {
 248     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 249     char * link_id = bprintf("%s_link_%d", cluster->id, i);
 250
 251     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 252
 253     s_sg_platf_host_cbarg_t host;
 254     memset(&host, 0, sizeof(host));
 255     host.id = host_id;
 256     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
 257       xbt_dict_cursor_t cursor=nullptr;
 258       char *key,*data;
 259       host.properties = xbt_dict_new();
 260
 261       xbt_dict_foreach(cluster->properties,cursor,key,data) {
 262         xbt_dict_set(host.properties, key, xbt_strdup(data),free);
 263       }
 264     }
 265
 266     host.speed_per_pstate.push_back(cluster->speed);
 267     host.pstate = 0;
 268     host.core_amount = cluster->core_amount;
 269     host.coord = "";
 270     sg_platf_new_host(&host);
 271     XBT_DEBUG("</host>");
 272
 273     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
 274
 275     s_surf_parsing_link_up_down_t info_lim;
 276     s_surf_parsing_link_up_down_t info_loop;
 277     // All links are saved in a matrix;
 278     // every row describes a single node; every node may have multiple links.
 279     // the first column may store a link from x to x if p_has_loopback is set
 280     // the second column may store a limiter link if p_has_limiter is set
 281     // other columns are to store one or more link for the node
 282
 283     //add a loopback link
 284     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 285       char *tmp_link = bprintf("%s_loopback", link_id);
 286       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
 287
 288       memset(&link, 0, sizeof(link));
 289       link.id        = tmp_link;
 290       link.bandwidth = cluster->loopback_bw;
 291       link.latency   = cluster->loopback_lat;
 292       link.policy    = SURF_LINK_FATPIPE;
 293       sg_platf_new_link(&link);
 294       info_loop.linkUp = Link::byName(tmp_link);
 295       info_loop.linkDown = Link::byName(tmp_link);
 296       free(tmp_link);
 297
 298       auto as_cluster = static_cast<AsCluster*>(current_as);
 299       as_cluster->privateLinks_.insert({rankId*as_cluster->linkCountPerNode_, info_loop});
 300     }
 301
 302     //add a limiter link (shared link to account for maximal bandwidth of the node)
 303     if(cluster->limiter_link!=0){
 304       char *tmp_link = bprintf("%s_limiter", link_id);
 305       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
 306
 307       memset(&link, 0, sizeof(link));
 308       link.id = tmp_link;
 309       link.bandwidth = cluster->limiter_link;
 310       link.latency = 0;
 311       link.policy = SURF_LINK_SHARED;
 312       sg_platf_new_link(&link);
 313       info_lim.linkUp = info_lim.linkDown = Link::byName(tmp_link);
 314       free(tmp_link);
 315       current_as->privateLinks_.insert(
 316           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_ , info_lim});
 317     }
 318
 319     //call the cluster function that adds the others links
 320     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 321       static_cast<AsClusterFatTree*>(current_as)->addProcessingNode(i);
 322     }
 323     else {
 324       current_as->create_links_for_node(cluster, i, rankId,
 325           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
 326     }
 327     xbt_free(link_id);
 328     xbt_free(host_id);
 329     rankId++;
 330   }
 331
 332   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 333   // and it's very useful to connect clusters together
 334   XBT_DEBUG(" ");
 335   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 336   char *newid = nullptr;
 337   s_sg_platf_router_cbarg_t router;
 338   memset(&router, 0, sizeof(router));
 339   router.id = cluster->router_id;
 340   if (!router.id || !strcmp(router.id, ""))
 341     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
 342   sg_platf_new_router(&router);
 343   current_as->router_ = (simgrid::kernel::routing::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 344   free(newid);
 345
 346   //Make the backbone
 347   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 348
 349     memset(&link, 0, sizeof(link));
 350     link.id        = bprintf("%s_backbone", cluster->id);
 351     link.bandwidth = cluster->bb_bw;
 352     link.latency   = cluster->bb_lat;
 353     link.policy    = cluster->bb_sharing_policy;
 354
 355     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
 356     sg_platf_new_link(&link);
 357
 358     routing_cluster_add_backbone(Link::byName(link.id));
 359     free((char*)link.id);
 360   }
 361
 362   XBT_DEBUG("</AS>");
 363   sg_platf_new_AS_seal();
 364
 365   simgrid::surf::on_cluster(cluster);
 366   delete cluster->radicals;
 367 }
 368 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
 369   simgrid::kernel::routing::AsCluster *cluster = dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
 370
 371   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
 372   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
 373
 374   cluster->backbone_ = bb;
 375   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
 376 }
 377
 378 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 379 {
 380   for (int radical : *cabinet->radicals) {
 381     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
 382     s_sg_platf_host_cbarg_t host;
 383     memset(&host, 0, sizeof(host));
 384     host.pstate           = 0;
 385     host.core_amount      = 1;
 386     host.id               = hostname;
 387     host.speed_per_pstate.push_back(cabinet->speed);
 388     sg_platf_new_host(&host);
 389
 390     s_sg_platf_link_cbarg_t link;
 391     memset(&link, 0, sizeof(link));
 392     link.policy    = SURF_LINK_FULLDUPLEX;
 393     link.latency   = cabinet->lat;
 394     link.bandwidth = cabinet->bw;
 395     link.id        = bprintf("link_%s",hostname);
 396     sg_platf_new_link(&link);
 397     free((char*)link.id);
 398
 399     s_sg_platf_host_link_cbarg_t host_link;
 400     memset(&host_link, 0, sizeof(host_link));
 401     host_link.id        = hostname;
 402     host_link.link_up   = bprintf("link_%s_UP",hostname);
 403     host_link.link_down = bprintf("link_%s_DOWN",hostname);
 404     sg_platf_new_hostlink(&host_link);
 405     free((char*)host_link.link_up);
 406     free((char*)host_link.link_down);
 407
 408     free(hostname);
 409   }
 410   delete cabinet->radicals;
 411 }
 412
 413 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
 414 {
 415   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
 416                "Refusing to add a second storage named \"%s\"", storage->id);
 417
 418   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
 419   xbt_assert(stype,"No storage type '%s'", storage->type_id);
 420
 421   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
 422       storage->id,
 423       storage->type_id,
 424       storage->content);
 425
 426   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
 427
 428   // if storage content is not specified use the content of storage_type if any
 429   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
 430     storage->content = ((storage_type_t) stype)->content;
 431     storage->content_type = ((storage_type_t) stype)->content_type;
 432     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
 433         storage->id,((storage_type_t) stype)->content_type,
 434         ((storage_type_t) stype)->type_id);
 435   }
 436
 437   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
 438       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
 439       "\n\t\tproperties '%p''\n",
 440       storage->id,
 441       ((storage_type_t) stype)->model,
 442       ((storage_type_t) stype)->type_id,
 443       storage->content,
 444       storage->content_type,
 445     storage->properties);
 446
 447   surf_storage_model->createStorage(storage->id,
 448                                      ((storage_type_t) stype)->type_id,
 449                                      storage->content,
 450                                      storage->content_type,
 451                    storage->properties,
 452                                      storage->attach);
 453 }
 454 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
 455
 456   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
 457                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
 458
 459   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
 460   stype->model = xbt_strdup(storage_type->model);
 461   stype->properties = storage_type->properties;
 462   stype->content = xbt_strdup(storage_type->content);
 463   stype->content_type = xbt_strdup(storage_type->content_type);
 464   stype->type_id = xbt_strdup(storage_type->id);
 465   stype->size = storage_type->size;
 466   stype->model_properties = storage_type->model_properties;
 467
 468   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
 469       "content '%s', and content_type '%s'",
 470       stype->type_id,
 471       stype->model,
 472       storage_type->content,
 473       storage_type->content_type);
 474
 475   xbt_lib_set(storage_type_lib,
 476       stype->type_id,
 477       ROUTING_STORAGE_TYPE_LEVEL,
 478       (void *) stype);
 479 }
 480
 481 static void mount_free(void *p)
 482 {
 483   mount_t mnt = (mount_t) p;
 484   xbt_free(mnt->name);
 485 }
 486
 487 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
 488   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
 489       "Cannot mount non-existent disk \"%s\"", mount->storageId);
 490
 491   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
 492
 493   s_mount_t mnt;
 494   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
 495   mnt.name = xbt_strdup(mount->name);
 496
 497   if(!mount_list){
 498     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
 499     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
 500   }
 501   xbt_dynar_push(mount_list, &mnt);
 502 }
 503
 504 void sg_platf_new_route(sg_platf_route_cbarg_t route)
 505 {
 506   routing_get_current()->addRoute(route);
 507 }
 508
 509 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
 510 {
 511   routing_get_current()->addBypassRoute(bypassRoute);
 512 }
 513
 514 void sg_platf_new_process(sg_platf_process_cbarg_t process)
 515 {
 516   sg_host_t host = sg_host_by_name(process->host);
 517   if (!host) {
 518     // The requested host does not exist. Do a nice message to the user
 519     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
 520     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
 521     free(tmp);
 522     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
 523     simgrid::s4u::Host* host;
 524     unsigned int cursor;
 525     xbt_dynar_foreach(all_hosts,cursor, host) {
 526       xbt_strbuff_append(msg,host->name().c_str());
 527       xbt_strbuff_append(msg,"', '");
 528       if (msg->used > 1024) {
 529         msg->data[msg->used-3]='\0';
 530         msg->used -= 3;
 531
 532         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
 533         break;
 534       }
 535     }
 536     msg->data[msg->used-3]='\0';
 537     xbt_die("%s", msg->data);
 538   }
 539   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
 540   xbt_assert(factory, "Function '%s' unknown", process->function);
 541
 542   double start_time = process->start_time;
 543   double kill_time  = process->kill_time;
 544   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
 545
 546   std::vector<std::string> args(process->argv, process->argv + process->argc);
 547   std::function<void()> code = factory(std::move(args));
 548
 549   smx_process_arg_t arg = nullptr;
 550   smx_actor_t process_created = nullptr;
 551
 552   arg = new simgrid::simix::ProcessArg();
 553   arg->name = std::string(process->argv[0]);
 554   arg->code = code;
 555   arg->data = nullptr;
 556   arg->host = host;
 557   arg->kill_time = kill_time;
 558   arg->properties = current_property_set;
 559
 560   sg_host_simix(host)->boot_processes.push_back(arg);
 561
 562   if (start_time > SIMIX_get_clock()) {
 563
 564     arg = new simgrid::simix::ProcessArg();
 565     arg->name = std::string(process->argv[0]);
 566     arg->code = std::move(code);
 567     arg->data = nullptr;
 568     arg->host = host;
 569     arg->kill_time = kill_time;
 570     arg->properties = current_property_set;
 571
 572     XBT_DEBUG("Process %s@%s will be started at time %f",
 573       arg->name.c_str(), arg->host->name().c_str(), start_time);
 574     SIMIX_timer_set(start_time, [=]() {
 575       simix_global->create_process_function(
 576                                             arg->name.c_str(),
 577                                             std::move(arg->code),
 578                                             arg->data,
 579                                             arg->host,
 580                                             arg->kill_time,
 581                                             arg->properties,
 582                                             arg->auto_restart,
 583                                             nullptr);
 584       delete arg;
 585     });
 586   } else {                      // start_time <= SIMIX_get_clock()
 587     XBT_DEBUG("Starting Process %s(%s) right now",
 588       arg->name.c_str(), sg_host_get_name(host));
 589
 590     process_created = simix_global->create_process_function(
 591         arg->name.c_str(), std::move(code), nullptr,
 592         host, kill_time,
 593         current_property_set, auto_restart, nullptr);
 594
 595     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
 596     if (!process_created) {
 597       return;
 598     }
 599   }
 600   current_property_set = nullptr;
 601 }
 602
 603 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 604 {
 605   using simgrid::kernel::routing::NetCard;
 606   using simgrid::kernel::routing::AsCluster;
 607
 608   char *host_id = bprintf("peer_%s", peer->id);
 609   char *router_id = bprintf("router_%s", peer->id);
 610
 611   XBT_DEBUG(" ");
 612
 613   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
 614   s_sg_platf_AS_cbarg_t AS;
 615   AS.id      = peer->id;
 616   AS.routing = A_surfxml_AS_routing_Cluster;
 617   sg_platf_new_AS_begin(&AS);
 618
 619   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->speed);
 620   s_sg_platf_host_cbarg_t host;
 621   memset(&host, 0, sizeof(host));
 622   host.id = host_id;
 623
 624   host.speed_per_pstate.push_back(peer->speed);
 625   host.pstate = 0;
 626   host.speed_trace = peer->availability_trace;
 627   host.state_trace = peer->state_trace;
 628   host.core_amount = 1;
 629   sg_platf_new_host(&host);
 630
 631   s_sg_platf_link_cbarg_t link;
 632   memset(&link, 0, sizeof(link));
 633   link.policy  = SURF_LINK_SHARED;
 634   link.latency = peer->lat;
 635
 636   char* link_up = bprintf("link_%s_UP",peer->id);
 637   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up, peer->bw_out, peer->lat);
 638   link.id = link_up;
 639   link.bandwidth = peer->bw_out;
 640   sg_platf_new_link(&link);
 641
 642   char* link_down = bprintf("link_%s_DOWN",peer->id);
 643   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down, peer->bw_in, peer->lat);
 644   link.id = link_down;
 645   link.bandwidth = peer->bw_in;
 646   sg_platf_new_link(&link);
 647
 648   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
 649   s_sg_platf_host_link_cbarg_t host_link;
 650   memset(&host_link, 0, sizeof(host_link));
 651   host_link.id        = host_id;
 652   host_link.link_up   = link_up;
 653   host_link.link_down = link_down;
 654   sg_platf_new_hostlink(&host_link);
 655   free(link_up);
 656   free(link_down);
 657
 658   XBT_DEBUG("<router id=\"%s\"/>", router_id);
 659   s_sg_platf_router_cbarg_t router;
 660   memset(&router, 0, sizeof(router));
 661   router.id = router_id;
 662   router.coord = peer->coord;
 663   sg_platf_new_router(&router);
 664
 665   XBT_DEBUG("</AS>");
 666   sg_platf_new_AS_seal();
 667   XBT_DEBUG(" ");
 668
 669   free(router_id);
 670   free(host_id);
 671 }
 672
 673 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
 674
 675 void sg_platf_end() {
 676   simgrid::surf::on_postparse();
 677 }
 678
 679 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
 680 static void surf_config_models_setup()
 681 {
 682   const char* host_model_name    = xbt_cfg_get_string("host/model");
 683   const char* vm_model_name      = xbt_cfg_get_string("vm/model");
 684   const char* network_model_name = xbt_cfg_get_string("network/model");
 685   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
 686   const char* storage_model_name = xbt_cfg_get_string("storage/model");
 687
 688   /* The compound host model is needed when using non-default net/cpu models */
 689   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
 690       xbt_cfg_is_default_value("host/model")) {
 691     host_model_name = "compound";
 692     xbt_cfg_set_string("host/model", host_model_name);
 693   }
 694
 695   XBT_DEBUG("host model: %s", host_model_name);
 696   if (!strcmp(host_model_name, "compound")) {
 697     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
 698     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
 699
 700     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
 701     surf_cpu_model_description[cpu_id].model_init_preparse();
 702
 703     int network_id = find_model_description(surf_network_model_description, network_model_name);
 704     surf_network_model_description[network_id].model_init_preparse();
 705   }
 706
 707   XBT_DEBUG("Call host_model_init");
 708   int host_id = find_model_description(surf_host_model_description, host_model_name);
 709   surf_host_model_description[host_id].model_init_preparse();
 710
 711   XBT_DEBUG("Call vm_model_init");
 712   int vm_id = find_model_description(surf_vm_model_description, vm_model_name);
 713   surf_vm_model_description[vm_id].model_init_preparse();
 714
 715   XBT_DEBUG("Call storage_model_init");
 716   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
 717   surf_storage_model_description[storage_id].model_init_preparse();
 718 }
 719
 720 /**
 721  * \brief Add an AS to the platform
 722  *
 723  * Add a new autonomous system to the platform. Any elements (such as host,
 724  * router or sub-AS) added after this call and before the corresponding call
 725  * to sg_platf_new_AS_seal() will be added to this AS.
 726  *
 727  * Once this function was called, the configuration concerning the used
 728  * models cannot be changed anymore.
 729  *
 730  * @param AS the parameters defining the AS to build.
 731  */
 732 simgrid::s4u::As * sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
 733 {
 734   if (!surf_parse_models_setup_already_called) {
 735     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
 736      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
 737      *
 738      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
 739      * (FIXME: check it out by creating a file beginning with one of these tags)
 740      * but cluster and peer create ASes internally, so putting the code in there is ok.
 741      */
 742     surf_parse_models_setup_already_called = 1;
 743     surf_config_models_setup();
 744   }
 745
 746   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
 747                             * any further config now that we created some real content */
 748
 749
 750   /* search the routing model */
 751   simgrid::kernel::routing::AsImpl *new_as = nullptr;
 752   switch(AS->routing){
 753     case A_surfxml_AS_routing_Cluster:
 754       new_as = new simgrid::kernel::routing::AsCluster(current_routing, AS->id);
 755       break;
 756     case A_surfxml_AS_routing_ClusterDragonfly:
 757       new_as = new simgrid::kernel::routing::AsClusterDragonfly(current_routing, AS->id);
 758       break;
 759     case A_surfxml_AS_routing_ClusterTorus:
 760       new_as = new simgrid::kernel::routing::AsClusterTorus(current_routing, AS->id);
 761       break;
 762     case A_surfxml_AS_routing_ClusterFatTree:
 763       new_as = new simgrid::kernel::routing::AsClusterFatTree(current_routing, AS->id);
 764       break;
 765     case A_surfxml_AS_routing_Dijkstra:
 766       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 0);
 767       break;
 768     case A_surfxml_AS_routing_DijkstraCache:
 769       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 1);
 770       break;
 771     case A_surfxml_AS_routing_Floyd:
 772       new_as = new simgrid::kernel::routing::AsFloyd(current_routing, AS->id);
 773       break;
 774     case A_surfxml_AS_routing_Full:
 775       new_as = new simgrid::kernel::routing::AsFull(current_routing, AS->id);
 776       break;
 777     case A_surfxml_AS_routing_None:
 778       new_as = new simgrid::kernel::routing::AsNone(current_routing, AS->id);
 779       break;
 780     case A_surfxml_AS_routing_Vivaldi:
 781       new_as = new simgrid::kernel::routing::AsVivaldi(current_routing, AS->id);
 782       break;
 783     default:
 784       xbt_die("Not a valid model!");
 785       break;
 786   }
 787
 788
 789   if (current_routing == nullptr && routing_platf->root_ == nullptr) { /* it is the first one */
 790     routing_platf->root_ = new_as;
 791
 792   } else if (current_routing != nullptr && routing_platf->root_ != nullptr) {
 793     /* set the father behavior */
 794     if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
 795       current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::recursive;
 796     /* add to the sons dictionary */
 797     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
 798
 799   } else {
 800     THROWF(arg_error, 0, "All defined components must belong to a AS");
 801   }
 802
 803   /* set the new current component of the tree */
 804   current_routing = new_as;
 805
 806   simgrid::kernel::routing::asCreatedCallbacks(new_as);
 807   if (TRACE_is_enabled())
 808     sg_instr_AS_begin(AS);
 809
 810   return new_as;
 811 }
 812
 813 /**
 814  * \brief Specify that the description of the current AS is finished
 815  *
 816  * Once you've declared all the content of your AS, you have to seal
 817  * it with this call. Your AS is not usable until you call this function.
 818  */
 819 void sg_platf_new_AS_seal()
 820 {
 821   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
 822   current_routing->seal();
 823   current_routing = static_cast<simgrid::kernel::routing::AsImpl*>(current_routing->father());
 824
 825   if (TRACE_is_enabled())
 826     sg_instr_AS_end();
 827 }
 828
 829 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
 830 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
 831 {
 832   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
 833   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
 834   xbt_assert(dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing),
 835       "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
 836
 837   s_surf_parsing_link_up_down_t link_up_down;
 838   link_up_down.linkUp = Link::byName(hostlink->link_up);
 839   link_up_down.linkDown = Link::byName(hostlink->link_down);
 840
 841   xbt_assert(link_up_down.linkUp, "Link '%s' not found!",hostlink->link_up);
 842   xbt_assert(link_up_down.linkDown, "Link '%s' not found!",hostlink->link_down);
 843
 844   auto as_cluster = static_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
 845
 846   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
 847     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
 848
 849   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->name(), netcard->id());
 850   as_cluster->privateLinks_.insert({netcard->id(), link_up_down});
 851 }