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/AsCluster.hpp"
7 #include "src/surf/network_interface.hpp"
9 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster, surf, "Routing part of surf");
11 /* This routing is specifically setup to represent clusters, aka homogeneous sets of machines
12 * Note that a router is created, easing the interconnexion with the rest of the world. */
17 AsCluster::AsCluster(const char*name)
20 AsCluster::~AsCluster()
22 xbt_dynar_free(&privateLinks_);
25 void AsCluster::getRouteAndLatency(NetCard *src, NetCard *dst, sg_platf_route_cbarg_t route, double *lat)
27 s_surf_parsing_link_up_down_t info;
28 XBT_VERB("cluster_get_route_and_latency from '%s'[%d] to '%s'[%d]",
29 src->name(), src->id(), dst->name(), dst->id());
30 xbt_assert(!xbt_dynar_is_empty(privateLinks_), "Cluster routing : no links attached to the source node - did you use host_link tag?");
31 if (! src->isRouter()) { // No specific link for router
33 if((src->id() == dst->id()) && hasLoopback_ ){
34 info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_, s_surf_parsing_link_up_down_t);
35 route->link_list->push_back(info.linkUp);
37 *lat += info.linkUp->getLatency();
42 if (hasLimiter_){ // limiter for sender
43 info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_ + (hasLoopback_?1:0), s_surf_parsing_link_up_down_t);
44 route->link_list->push_back((Link*)info.linkUp);
47 info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_ + (hasLoopback_?1:0) + (hasLimiter_?1:0), s_surf_parsing_link_up_down_t);
48 if (info.linkUp) { // link up
49 route->link_list->push_back(info.linkUp);
51 *lat += info.linkUp->getLatency();
57 route->link_list->push_back(backbone_);
59 *lat += backbone_->getLatency();
62 if (! dst->isRouter()) { // No specific link for router
63 info = xbt_dynar_get_as(privateLinks_, dst->id() * linkCountPerNode_ + hasLoopback_ + hasLimiter_, s_surf_parsing_link_up_down_t);
65 if (info.linkDown) { // link down
66 route->link_list->push_back(info.linkDown);
68 *lat += info.linkDown->getLatency();
70 if (hasLimiter_){ // limiter for receiver
71 info = xbt_dynar_get_as(privateLinks_, dst->id() * linkCountPerNode_ + hasLoopback_, s_surf_parsing_link_up_down_t);
72 route->link_list->push_back(info.linkUp);
77 void AsCluster::getGraph(xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges)
79 xbt_node_t current, previous, backboneNode = nullptr, routerNode;
80 s_surf_parsing_link_up_down_t info;
82 xbt_assert(router_,"Malformed cluster. This may be because your platform file is a hypergraph while it must be a graph.");
84 /* create the router */
85 char *link_name = router_->name();
86 routerNode = new_xbt_graph_node(graph, link_name, nodes);
89 const char *link_nameR = backbone_->getName();
90 backboneNode = new_xbt_graph_node(graph, link_nameR, nodes);
92 new_xbt_graph_edge(graph, routerNode, backboneNode, edges);
95 for (auto src: vertices_){
96 if (! src->isRouter()) {
97 previous = new_xbt_graph_node(graph, src->name(), nodes);
99 info = xbt_dynar_get_as(privateLinks_, src->id(), s_surf_parsing_link_up_down_t);
101 if (info.linkUp) { // link up
102 const char *link_name = static_cast<simgrid::surf::Resource*>(info.linkUp)->getName();
103 current = new_xbt_graph_node(graph, link_name, nodes);
104 new_xbt_graph_edge(graph, previous, current, edges);
107 new_xbt_graph_edge(graph, current, backboneNode, edges);
109 new_xbt_graph_edge(graph, current, routerNode, edges);
113 if (info.linkDown) { // link down
114 const char *link_name = static_cast<simgrid::surf::Resource*>(
115 info.linkDown)->getName();
116 current = new_xbt_graph_node(graph, link_name, nodes);
117 new_xbt_graph_edge(graph, previous, current, edges);
120 new_xbt_graph_edge(graph, current, backboneNode, edges);
122 new_xbt_graph_edge(graph, current, routerNode, edges);
129 void AsCluster::create_links_for_node(sg_platf_cluster_cbarg_t cluster, int id, int , int position){
130 s_surf_parsing_link_up_down_t info;
131 char* link_id = bprintf("%s_link_%d", cluster->id, id);
133 s_sg_platf_link_cbarg_t link;
134 memset(&link, 0, sizeof(link));
136 link.bandwidth = cluster->bw;
137 link.latency = cluster->lat;
138 link.policy = cluster->sharing_policy;
139 sg_platf_new_link(&link);
141 if (link.policy == SURF_LINK_FULLDUPLEX) {
142 char *tmp_link = bprintf("%s_UP", link_id);
143 info.linkUp = Link::byName(tmp_link);
145 tmp_link = bprintf("%s_DOWN", link_id);
146 info.linkDown = Link::byName(tmp_link);
149 info.linkUp = Link::byName(link_id);
150 info.linkDown = info.linkUp;
152 xbt_dynar_set(privateLinks_, position, &info);