1 /* Copyright (c) 2009-2016. The SimGrid Team. All rights reserved. */
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. */
6 #include "src/kernel/routing/ClusterZone.hpp"
7 #include "src/kernel/routing/NetCard.hpp"
8 #include "src/kernel/routing/RoutedZone.hpp"
9 #include "src/surf/network_interface.hpp"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster, surf, "Routing part of surf");
13 /* This routing is specifically setup to represent clusters, aka homogeneous sets of machines
14 * Note that a router is created, easing the interconnexion with the rest of the world. */
19 ClusterZone::ClusterZone(NetZone* father, const char* name) : NetZoneImpl(father, name)
23 void ClusterZone::getLocalRoute(NetCard* src, NetCard* dst, sg_platf_route_cbarg_t route, double* lat)
25 XBT_VERB("cluster getLocalRoute from '%s'[%d] to '%s'[%d]", src->cname(), src->id(), dst->cname(), dst->id());
26 xbt_assert(!privateLinks_.empty(),
27 "Cluster routing: no links attached to the source node - did you use host_link tag?");
29 if ((src->id() == dst->id()) && hasLoopback_) {
30 xbt_assert(!src->isRouter(), "Routing from a cluster private router to itself is meaningless");
32 std::pair<Link*, Link*> info = privateLinks_.at(src->id() * linkCountPerNode_);
33 route->link_list->push_back(info.first);
35 *lat += info.first->latency();
39 if (!src->isRouter()) { // No private link for the private router
40 if (hasLimiter_) { // limiter for sender
41 std::pair<Link*, Link*> info = privateLinks_.at(src->id() * linkCountPerNode_ + (hasLoopback_ ? 1 : 0));
42 route->link_list->push_back(info.first);
45 std::pair<Link*, Link*> info =
46 privateLinks_.at(src->id() * linkCountPerNode_ + (hasLoopback_ ? 1 : 0) + (hasLimiter_ ? 1 : 0));
47 if (info.first) { // link up
48 route->link_list->push_back(info.first);
50 *lat += info.first->latency();
55 route->link_list->push_back(backbone_);
57 *lat += backbone_->latency();
60 if (!dst->isRouter()) { // No specific link for router
62 std::pair<Link*, Link*> info = privateLinks_.at(dst->id() * linkCountPerNode_ + hasLoopback_ + hasLimiter_);
63 if (info.second) { // link down
64 route->link_list->push_back(info.second);
66 *lat += info.second->latency();
68 if (hasLimiter_) { // limiter for receiver
69 info = privateLinks_.at(dst->id() * linkCountPerNode_ + hasLoopback_);
70 route->link_list->push_back(info.first);
75 void ClusterZone::getGraph(xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges)
78 "Malformed cluster. This may be because your platform file is a hypergraph while it must be a graph.");
80 /* create the router */
81 xbt_node_t routerNode = new_xbt_graph_node(graph, router_->cname(), nodes);
83 xbt_node_t backboneNode = nullptr;
85 backboneNode = new_xbt_graph_node(graph, backbone_->getName(), nodes);
86 new_xbt_graph_edge(graph, routerNode, backboneNode, edges);
89 for (auto src : vertices_) {
90 if (!src->isRouter()) {
91 xbt_node_t previous = new_xbt_graph_node(graph, src->cname(), nodes);
93 std::pair<Link*, Link*> info = privateLinks_.at(src->id());
95 if (info.first) { // link up
96 xbt_node_t current = new_xbt_graph_node(graph, info.first->getName(), nodes);
97 new_xbt_graph_edge(graph, previous, current, edges);
100 new_xbt_graph_edge(graph, current, backboneNode, edges);
102 new_xbt_graph_edge(graph, current, routerNode, edges);
106 if (info.second) { // link down
107 xbt_node_t current = new_xbt_graph_node(graph, info.second->getName(), nodes);
108 new_xbt_graph_edge(graph, previous, current, edges);
111 new_xbt_graph_edge(graph, current, backboneNode, edges);
113 new_xbt_graph_edge(graph, current, routerNode, edges);
120 void ClusterZone::create_links_for_node(sg_platf_cluster_cbarg_t cluster, int id, int /*rank*/, int position)
122 char* link_id = bprintf("%s_link_%d", cluster->id, id);
124 s_sg_platf_link_cbarg_t link;
125 memset(&link, 0, sizeof(link));
127 link.bandwidth = cluster->bw;
128 link.latency = cluster->lat;
129 link.policy = cluster->sharing_policy;
130 sg_platf_new_link(&link);
132 Link *linkUp, *linkDown;
133 if (link.policy == SURF_LINK_FULLDUPLEX) {
134 char* tmp_link = bprintf("%s_UP", link_id);
135 linkUp = Link::byName(tmp_link);
137 tmp_link = bprintf("%s_DOWN", link_id);
138 linkDown = Link::byName(tmp_link);
141 linkUp = Link::byName(link_id);
144 privateLinks_.insert({position, {linkUp, linkDown}});