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allow users to create clusters with pstates
[simgrid.git] / 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->speeds.front());
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 = cluster->speeds;
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 }