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[simgrid.git] / src / surf / sg_platf.cpp
1 /* Copyright (c) 2006-2021. The SimGrid Team. All rights reserved.          */
2
3 /* This program is free software; you can redistribute it and/or modify it
4  * under the terms of the license (GNU LGPL) which comes with this package. */
5
6 #include "simgrid/Exception.hpp"
7 #include "simgrid/kernel/routing/ClusterZone.hpp"
8 #include "simgrid/kernel/routing/DijkstraZone.hpp"
9 #include "simgrid/kernel/routing/DragonflyZone.hpp"
10 #include "simgrid/kernel/routing/EmptyZone.hpp"
11 #include "simgrid/kernel/routing/FatTreeZone.hpp"
12 #include "simgrid/kernel/routing/FloydZone.hpp"
13 #include "simgrid/kernel/routing/FullZone.hpp"
14 #include "simgrid/kernel/routing/NetPoint.hpp"
15 #include "simgrid/kernel/routing/NetZoneImpl.hpp"
16 #include "simgrid/kernel/routing/TorusZone.hpp"
17 #include "simgrid/kernel/routing/VivaldiZone.hpp"
18 #include "simgrid/kernel/routing/WifiZone.hpp"
19 #include "simgrid/s4u/Engine.hpp"
20 #include "src/include/simgrid/sg_config.hpp"
21 #include "src/include/surf/surf.hpp"
22 #include "src/kernel/EngineImpl.hpp"
23 #include "src/kernel/resource/DiskImpl.hpp"
24 #include "src/kernel/resource/profile/Profile.hpp"
25 #include "src/simix/smx_private.hpp"
26 #include "src/surf/HostImpl.hpp"
27 #include "src/surf/xml/platf_private.hpp"
28
29 #include <string>
30
31 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
32
33 namespace simgrid {
34 namespace kernel {
35 namespace routing {
36 xbt::signal<void(ClusterCreationArgs const&)> on_cluster_creation;
37 } // namespace routing
38 } // namespace kernel
39 } // namespace simgrid
40
41 /** The current NetZone in the parsing */
42 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
43 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
44 {
45   return current_routing;
46 }
47
48 /** Module management function: creates all internal data structures */
49 void sg_platf_init()
50 {
51   // Do nothing: just for symmetry of user code
52 }
53
54 /** Module management function: frees all internal data structures */
55 void sg_platf_exit()
56 {
57   simgrid::kernel::routing::on_cluster_creation.disconnect_slots();
58   simgrid::s4u::Engine::on_platform_created.disconnect_slots();
59
60   surf_parse_lex_destroy();
61 }
62
63 /** @brief Add a host to the current NetZone */
64 void sg_platf_new_host(const simgrid::kernel::routing::HostCreationArgs* args)
65 {
66   simgrid::s4u::Host* host =
67       routing_get_current()->create_host(args->id, args->speed_per_pstate)->set_core_count(args->core_amount);
68
69   if (args->properties) {
70     host->set_properties(*args->properties);
71     delete args->properties;
72   }
73
74   host->get_impl()->set_disks(args->disks, host);
75
76   /* Change from the defaults */
77   host->set_state_profile(args->state_trace)->set_speed_profile(args->speed_trace);
78
79   if (not args->coord.empty())
80     new simgrid::kernel::routing::vivaldi::Coords(host->get_netpoint(), args->coord);
81
82   host->seal();
83   simgrid::s4u::Host::on_creation(*host); // notify the signal
84
85   /* When energy plugin is activated, changing the pstate requires to already have the HostEnergy extension whose
86    * allocation is triggered by the on_creation signal. Then set_pstate must be called after the signal emition */
87   if (args->pstate != 0)
88     host->set_pstate(args->pstate);
89 }
90
91 /** @brief Add a "router" to the network element list */
92 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const std::string& name, const char* coords)
93 {
94   xbt_assert(nullptr == simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(name),
95              "Refusing to create a router named '%s': this name already describes a node.", name.c_str());
96
97   auto* netpoint = new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router);
98   netpoint->set_englobing_zone(current_routing);
99   XBT_DEBUG("Router '%s' has the id %u", netpoint->get_cname(), netpoint->id());
100
101   if (coords && strcmp(coords, ""))
102     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
103
104   return netpoint;
105 }
106
107 static void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* args, const std::string& link_name)
108 {
109   simgrid::s4u::Link* link = routing_get_current()->create_link(link_name, args->bandwidths);
110   if (args->properties)
111     link->set_properties(*args->properties);
112
113   link->get_impl() // this call to get_impl saves some simcalls but can be removed
114       ->set_sharing_policy(args->policy)
115       ->set_state_profile(args->state_trace)
116       ->set_latency_profile(args->latency_trace)
117       ->set_bandwidth_profile(args->bandwidth_trace)
118       ->set_latency(args->latency)
119       ->seal();
120 }
121
122 void sg_platf_new_link(const simgrid::kernel::routing::LinkCreationArgs* link)
123 {
124   if (link->policy == simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX) {
125     sg_platf_new_link(link, link->id + "_UP");
126     sg_platf_new_link(link, link->id + "_DOWN");
127   } else {
128     sg_platf_new_link(link, link->id);
129   }
130   delete link->properties;
131 }
132
133 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
134 {
135   using simgrid::kernel::routing::ClusterZone;
136   using simgrid::kernel::routing::DragonflyZone;
137   using simgrid::kernel::routing::FatTreeZone;
138   using simgrid::kernel::routing::TorusZone;
139
140   int rankId = 0;
141
142   // What an inventive way of initializing the NetZone that I have as ancestor :-(
143   simgrid::kernel::routing::ZoneCreationArgs zone;
144   zone.id = cluster->id;
145   switch (cluster->topology) {
146     case simgrid::kernel::routing::ClusterTopology::TORUS:
147       zone.routing = "ClusterTorus";
148       break;
149     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
150       zone.routing = "ClusterDragonfly";
151       break;
152     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
153       zone.routing = "ClusterFatTree";
154       break;
155     default:
156       zone.routing = "Cluster";
157       break;
158   }
159   sg_platf_new_Zone_begin(&zone);
160   auto* current_zone = static_cast<ClusterZone*>(routing_get_current());
161   current_zone->parse_specific_arguments(cluster);
162   if (cluster->properties != nullptr)
163     for (auto const& elm : *cluster->properties)
164       current_zone->get_iface()->set_property(elm.first, elm.second);
165
166   if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
167     current_zone->set_loopback();
168   }
169
170   if (cluster->limiter_link > 0) {
171     current_zone->set_limiter();
172   }
173
174   for (int const& i : *cluster->radicals) {
175     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
176
177     XBT_DEBUG("<host\tid=\"%s\"\tspeed=\"%f\">", host_id.c_str(), cluster->speeds.front());
178     simgrid::s4u::Host* host =
179         current_zone->create_host(host_id, cluster->speeds)->set_core_count(cluster->core_amount);
180     ;
181
182     if ((cluster->properties != nullptr) && (not cluster->properties->empty()))
183       host->set_properties(*cluster->properties);
184     host->seal();
185     simgrid::s4u::Host::on_creation(*host); // notify the signal
186
187     XBT_DEBUG("</host>");
188
189     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
190     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
191
192     // All links are saved in a matrix;
193     // every row describes a single node; every node may have multiple links.
194     // the first column may store a link from x to x if p_has_loopback is set
195     // the second column may store a limiter link if p_has_limiter is set
196     // other columns are to store one or more link for the node
197
198     // add a loopback link
199     const simgrid::s4u::Link* linkUp   = nullptr;
200     const simgrid::s4u::Link* linkDown = nullptr;
201     if (cluster->loopback_bw > 0 || cluster->loopback_lat > 0) {
202       std::string tmp_link = link_id + "_loopback";
203       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
204
205       simgrid::kernel::routing::LinkCreationArgs link;
206       link.id = tmp_link;
207       link.bandwidths.push_back(cluster->loopback_bw);
208       link.latency = cluster->loopback_lat;
209       link.policy  = simgrid::s4u::Link::SharingPolicy::FATPIPE;
210       sg_platf_new_link(&link);
211       linkUp   = simgrid::s4u::Link::by_name_or_null(tmp_link);
212       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
213
214       current_zone->add_private_link_at(current_zone->node_pos(rankId), {linkUp->get_impl(), linkDown->get_impl()});
215     }
216
217     // add a limiter link (shared link to account for maximal bandwidth of the node)
218     linkUp   = nullptr;
219     linkDown = nullptr;
220     if (cluster->limiter_link > 0) {
221       std::string tmp_link = std::string(link_id) + "_limiter";
222       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
223
224       simgrid::kernel::routing::LinkCreationArgs link;
225       link.id = tmp_link;
226       link.bandwidths.push_back(cluster->limiter_link);
227       link.latency = 0;
228       link.policy  = simgrid::s4u::Link::SharingPolicy::SHARED;
229       sg_platf_new_link(&link);
230       linkDown = simgrid::s4u::Link::by_name_or_null(tmp_link);
231       linkUp   = linkDown;
232       current_zone->add_private_link_at(current_zone->node_pos_with_loopback(rankId),
233                                         {linkUp->get_impl(), linkDown->get_impl()});
234     }
235
236     // call the cluster function that adds the others links
237     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
238       static_cast<FatTreeZone*>(current_zone)->add_processing_node(i);
239     } else {
240       current_zone->create_links_for_node(cluster, i, rankId, current_zone->node_pos_with_loopback_limiter(rankId));
241     }
242     rankId++;
243   }
244   delete cluster->properties;
245
246   // Add a router.
247   XBT_DEBUG(" ");
248   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
249   if (cluster->router_id.empty())
250     cluster->router_id = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
251   current_zone->set_router(sg_platf_new_router(cluster->router_id, nullptr));
252
253   // Make the backbone
254   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
255     simgrid::kernel::routing::LinkCreationArgs link;
256     link.id = std::string(cluster->id) + "_backbone";
257     link.bandwidths.push_back(cluster->bb_bw);
258     link.latency = cluster->bb_lat;
259     link.policy  = cluster->bb_sharing_policy;
260
261     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
262     sg_platf_new_link(&link);
263
264     routing_cluster_add_backbone(simgrid::s4u::Link::by_name(link.id)->get_impl());
265   }
266
267   XBT_DEBUG("</zone>");
268   sg_platf_new_Zone_seal();
269
270   simgrid::kernel::routing::on_cluster_creation(*cluster);
271   delete cluster->radicals;
272 }
273
274 void routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl* bb)
275 {
276   auto* cluster = dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
277
278   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
279   xbt_assert(not cluster->has_backbone(), "Cluster %s already has a backbone link!", cluster->get_cname());
280
281   cluster->set_backbone(bb);
282   XBT_DEBUG("Add a backbone to zone '%s'", current_routing->get_cname());
283 }
284
285 void sg_platf_new_cabinet(const simgrid::kernel::routing::CabinetCreationArgs* cabinet)
286 {
287   for (int const& radical : *cabinet->radicals) {
288     std::string hostname = cabinet->prefix + std::to_string(radical) + cabinet->suffix;
289     simgrid::kernel::routing::HostCreationArgs host;
290     host.pstate      = 0;
291     host.core_amount = 1;
292     host.id          = hostname;
293     host.speed_per_pstate.push_back(cabinet->speed);
294     sg_platf_new_host(&host);
295
296     simgrid::kernel::routing::LinkCreationArgs link;
297     link.policy  = simgrid::s4u::Link::SharingPolicy::SPLITDUPLEX;
298     link.latency = cabinet->lat;
299     link.bandwidths.push_back(cabinet->bw);
300     link.id = "link_" + hostname;
301     sg_platf_new_link(&link);
302
303     simgrid::kernel::routing::HostLinkCreationArgs host_link;
304     host_link.id        = hostname;
305     host_link.link_up   = std::string("link_") + hostname + "_UP";
306     host_link.link_down = std::string("link_") + hostname + "_DOWN";
307     sg_platf_new_hostlink(&host_link);
308   }
309   delete cabinet->radicals;
310 }
311
312 simgrid::kernel::resource::DiskImpl* sg_platf_new_disk(const simgrid::kernel::routing::DiskCreationArgs* disk)
313 {
314   simgrid::kernel::resource::DiskImpl* pimpl =
315       routing_get_current()->create_disk(disk->id, disk->read_bw, disk->write_bw)->get_impl();
316
317   if (disk->properties) {
318     pimpl->set_properties(*disk->properties);
319     delete disk->properties;
320   }
321
322   pimpl->seal();
323   simgrid::s4u::Disk::on_creation(*pimpl->get_iface());
324   return pimpl;
325 }
326
327 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
328 {
329   routing_get_current()->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
330                                    route->symmetrical);
331 }
332
333 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
334 {
335   routing_get_current()->add_bypass_route(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
336                                           bypassRoute->link_list, bypassRoute->symmetrical);
337 }
338
339 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
340 {
341   sg_host_t host = sg_host_by_name(actor->host);
342   if (not host) {
343     // The requested host does not exist. Do a nice message to the user
344     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
345                       "' does not exist\nExisting hosts: '";
346
347     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::get_instance()->get_all_hosts();
348
349     for (auto const& some_host : list) {
350       msg += some_host->get_name();
351       msg += "', '";
352       if (msg.length() > 1024) {
353         msg.pop_back(); // remove trailing quote
354         msg += "...(list truncated)......";
355         break;
356       }
357     }
358     xbt_die("%s", msg.c_str());
359   }
360   const simgrid::kernel::actor::ActorCodeFactory& factory =
361       simgrid::kernel::EngineImpl::get_instance()->get_function(actor->function);
362   xbt_assert(factory, "Error while creating an actor from the XML file: Function '%s' not registered", actor->function);
363
364   double start_time = actor->start_time;
365   double kill_time  = actor->kill_time;
366   bool auto_restart = actor->restart_on_failure;
367
368   std::string actor_name                 = actor->args[0];
369   simgrid::kernel::actor::ActorCode code = factory(std::move(actor->args));
370   std::shared_ptr<std::unordered_map<std::string, std::string>> properties(actor->properties);
371
372   auto* arg =
373       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
374
375   host->get_impl()->add_actor_at_boot(arg);
376
377   if (start_time > SIMIX_get_clock()) {
378     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
379
380     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
381     simgrid::simix::Timer::set(start_time, [arg, auto_restart]() {
382       simgrid::kernel::actor::ActorImplPtr new_actor = simgrid::kernel::actor::ActorImpl::create(
383           arg->name.c_str(), arg->code, arg->data, arg->host, arg->properties.get(), nullptr);
384       if (arg->kill_time >= 0)
385         new_actor->set_kill_time(arg->kill_time);
386       if (auto_restart)
387         new_actor->set_auto_restart(auto_restart);
388       delete arg;
389     });
390   } else { // start_time <= SIMIX_get_clock()
391     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->get_cname());
392
393     try {
394       simgrid::kernel::actor::ActorImplPtr new_actor = nullptr;
395       new_actor = simgrid::kernel::actor::ActorImpl::create(arg->name.c_str(), code, nullptr, host,
396                                                             arg->properties.get(), nullptr);
397       /* The actor creation will fail if the host is currently dead, but that's fine */
398       if (arg->kill_time >= 0)
399         new_actor->set_kill_time(arg->kill_time);
400       if (auto_restart)
401         new_actor->set_auto_restart(auto_restart);
402     } catch (simgrid::HostFailureException const&) {
403       XBT_WARN("Deployment includes some initially turned off Hosts ... nevermind.");
404     }
405   }
406 }
407
408 void sg_platf_new_peer(const simgrid::kernel::routing::PeerCreationArgs* peer)
409 {
410   auto* zone = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
411   xbt_assert(zone, "<peer> tag can only be used in Vivaldi netzones.");
412
413   std::vector<double> speed_per_pstate;
414   speed_per_pstate.push_back(peer->speed);
415   simgrid::s4u::Host* host = zone->create_host(peer->id, speed_per_pstate);
416
417   zone->set_peer_link(host->get_netpoint(), peer->bw_in, peer->bw_out, peer->coord);
418
419   /* Change from the defaults */
420   if (peer->state_trace)
421     host->set_state_profile(peer->state_trace);
422   if (peer->speed_trace)
423     host->set_speed_profile(peer->speed_trace);
424   host->seal();
425   simgrid::s4u::Host::on_creation(*host); // notify the signal
426 }
427
428 /**
429  * @brief Auxiliary function to build the object NetZoneImpl
430  *
431  * Builds the objects, setting its father properties and root netzone if needed
432  * @param zone the parameters defining the Zone to build.
433  * @return Pointer to recently created netzone
434  */
435 static simgrid::kernel::routing::NetZoneImpl*
436 sg_platf_create_zone(const simgrid::kernel::routing::ZoneCreationArgs* zone)
437 {
438   /* search the routing model */
439   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
440
441   if (strcasecmp(zone->routing.c_str(), "Cluster") == 0) {
442     new_zone = new simgrid::kernel::routing::ClusterZone(zone->id);
443   } else if (strcasecmp(zone->routing.c_str(), "ClusterDragonfly") == 0) {
444     new_zone = new simgrid::kernel::routing::DragonflyZone(zone->id);
445   } else if (strcasecmp(zone->routing.c_str(), "ClusterTorus") == 0) {
446     new_zone = new simgrid::kernel::routing::TorusZone(zone->id);
447   } else if (strcasecmp(zone->routing.c_str(), "ClusterFatTree") == 0) {
448     new_zone = new simgrid::kernel::routing::FatTreeZone(zone->id);
449   } else if (strcasecmp(zone->routing.c_str(), "Dijkstra") == 0) {
450     new_zone = new simgrid::kernel::routing::DijkstraZone(zone->id, false);
451   } else if (strcasecmp(zone->routing.c_str(), "DijkstraCache") == 0) {
452     new_zone = new simgrid::kernel::routing::DijkstraZone(zone->id, true);
453   } else if (strcasecmp(zone->routing.c_str(), "Floyd") == 0) {
454     new_zone = new simgrid::kernel::routing::FloydZone(zone->id);
455   } else if (strcasecmp(zone->routing.c_str(), "Full") == 0) {
456     new_zone = new simgrid::kernel::routing::FullZone(zone->id);
457   } else if (strcasecmp(zone->routing.c_str(), "None") == 0) {
458     new_zone = new simgrid::kernel::routing::EmptyZone(zone->id);
459   } else if (strcasecmp(zone->routing.c_str(), "Vivaldi") == 0) {
460     new_zone = new simgrid::kernel::routing::VivaldiZone(zone->id);
461   } else if (strcasecmp(zone->routing.c_str(), "Wifi") == 0) {
462     new_zone = new simgrid::kernel::routing::WifiZone(zone->id);
463   } else {
464     xbt_die("Not a valid model!");
465   }
466   new_zone->set_parent(current_routing);
467
468   return new_zone;
469 }
470
471 /**
472  * @brief Add a Zone to the platform
473  *
474  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
475  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
476  *
477  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
478  *
479  * @param zone the parameters defining the Zone to build.
480  */
481 simgrid::kernel::routing::NetZoneImpl* sg_platf_new_Zone_begin(const simgrid::kernel::routing::ZoneCreationArgs* zone)
482 {
483   /* First create the zone.
484    * This order is important to assure that root netzone is set when models are setting
485    * the default mode for each resource (CPU, network, etc)
486    */
487   auto* new_zone = sg_platf_create_zone(zone);
488
489   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
490                             * any further config now that we created some real content */
491
492   /* set the new current component of the tree */
493   current_routing = new_zone;
494   simgrid::s4u::NetZone::on_creation(*new_zone->get_iface()); // notify the signal
495
496   return new_zone;
497 }
498
499 void sg_platf_new_Zone_set_properties(const std::unordered_map<std::string, std::string>* props)
500 {
501   xbt_assert(current_routing, "Cannot set properties of the current Zone: none under construction");
502
503   if (props)
504     current_routing->set_properties(*props);
505 }
506
507 /**
508  * @brief Specify that the description of the current Zone is finished
509  *
510  * Once you've declared all the content of your Zone, you have to seal
511  * it with this call. Your Zone is not usable until you call this function.
512  */
513 void sg_platf_new_Zone_seal()
514 {
515   xbt_assert(current_routing, "Cannot seal the current Zone: zone under construction");
516   current_routing->seal();
517   simgrid::s4u::NetZone::on_seal(*current_routing->get_iface());
518   current_routing = current_routing->get_parent();
519 }
520
521 /** @brief Add a link connecting a host to the rest of its Zone (which must be cluster or vivaldi) */
522 void sg_platf_new_hostlink(const simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
523 {
524   const simgrid::kernel::routing::NetPoint* netpoint = simgrid::s4u::Host::by_name(hostlink->id)->get_netpoint();
525   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
526   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
527              "Only hosts from Cluster and Vivaldi Zones can get a host_link.");
528
529   const simgrid::s4u::Link* linkUp   = simgrid::s4u::Link::by_name_or_null(hostlink->link_up);
530   const simgrid::s4u::Link* linkDown = simgrid::s4u::Link::by_name_or_null(hostlink->link_down);
531
532   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
533   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
534
535   auto* cluster_zone = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
536
537   if (cluster_zone->private_link_exists_at(netpoint->id()))
538     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
539
540   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->get_cname(), netpoint->id());
541   cluster_zone->add_private_link_at(netpoint->id(), {linkUp->get_impl(), linkDown->get_impl()});
542 }
543
544 void sg_platf_new_trace(simgrid::kernel::routing::ProfileCreationArgs* profile)
545 {
546   simgrid::kernel::profile::Profile* mgr_profile;
547   if (not profile->file.empty()) {
548     mgr_profile = simgrid::kernel::profile::Profile::from_file(profile->file);
549   } else {
550     xbt_assert(not profile->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
551                profile->id.c_str());
552     mgr_profile = simgrid::kernel::profile::Profile::from_string(profile->id, profile->pc_data, profile->periodicity);
553   }
554   traces_set_list.insert({profile->id, mgr_profile});
555 }