1 /* Copyright (c) 2009-2017. 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/NetPoint.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, std::string name) : NetZoneImpl(father, name)
23 void ClusterZone::getLocalRoute(NetPoint* src, NetPoint* dst, sg_platf_route_cbarg_t route, double* lat)
25 XBT_VERB("cluster getLocalRoute from '%s'[%u] to '%s'[%u]", src->getCname(), src->id(), dst->getCname(), dst->id());
26 xbt_assert(not 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(not src->isRouter(), "Routing from a cluster private router to itself is meaningless");
32 std::pair<surf::LinkImpl*, surf::LinkImpl*> info = privateLinks_.at(nodePosition(src->id()));
33 route->link_list.push_back(info.first);
35 *lat += info.first->latency();
39 if (not src->isRouter()) { // No private link for the private router
40 if (hasLimiter_) { // limiter for sender
41 std::pair<surf::LinkImpl*, surf::LinkImpl*> info = privateLinks_.at(nodePositionWithLoopback(src->id()));
42 route->link_list.push_back(info.first);
45 std::pair<surf::LinkImpl*, surf::LinkImpl*> info = privateLinks_.at(nodePositionWithLimiter(src->id()));
46 if (info.first) { // link up
47 route->link_list.push_back(info.first);
49 *lat += info.first->latency();
54 route->link_list.push_back(backbone_);
56 *lat += backbone_->latency();
59 if (not dst->isRouter()) { // No specific link for router
61 std::pair<surf::LinkImpl*, surf::LinkImpl*> info = privateLinks_.at(nodePositionWithLimiter(dst->id()));
62 if (info.second) { // link down
63 route->link_list.push_back(info.second);
65 *lat += info.second->latency();
67 if (hasLimiter_) { // limiter for receiver
68 info = privateLinks_.at(nodePositionWithLoopback(dst->id()));
69 route->link_list.push_back(info.first);
74 void ClusterZone::getGraph(xbt_graph_t graph, std::map<std::string, xbt_node_t>* nodes,
75 std::map<std::string, xbt_edge_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_->getCname(), nodes);
83 xbt_node_t backboneNode = nullptr;
85 backboneNode = new_xbt_graph_node(graph, backbone_->getCname(), nodes);
86 new_xbt_graph_edge(graph, routerNode, backboneNode, edges);
89 for (auto const& src : getVertices()) {
90 if (not src->isRouter()) {
91 xbt_node_t previous = new_xbt_graph_node(graph, src->getCname(), nodes);
93 std::pair<surf::LinkImpl*, surf::LinkImpl*> info = privateLinks_.at(src->id());
95 if (info.first) { // link up
96 xbt_node_t current = new_xbt_graph_node(graph, info.first->getCname(), 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->getCname(), 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(ClusterCreationArgs* cluster, int id, int /*rank*/, unsigned int position)
122 std::string link_id = cluster->id + "_link_" + std::to_string(id);
124 LinkCreationArgs link;
126 link.bandwidth = cluster->bw;
127 link.latency = cluster->lat;
128 link.policy = cluster->sharing_policy;
129 sg_platf_new_link(&link);
131 surf::LinkImpl *linkUp;
132 surf::LinkImpl *linkDown;
133 if (link.policy == SURF_LINK_FULLDUPLEX) {
134 linkUp = surf::LinkImpl::byName(link_id + "_UP");
135 linkDown = surf::LinkImpl::byName(link_id + "_DOWN");
137 linkUp = surf::LinkImpl::byName(link_id);
140 privateLinks_.insert({position, {linkUp, linkDown}});