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/surf/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. */
16 AsCluster::AsCluster(const char*name)
19 AsCluster::~AsCluster()
21 xbt_dynar_free(&privateLinks_);
24 void AsCluster::getRouteAndLatency(NetCard *src, NetCard *dst, sg_platf_route_cbarg_t route, double *lat)
26 s_surf_parsing_link_up_down_t info;
27 XBT_VERB("cluster_get_route_and_latency from '%s'[%d] to '%s'[%d]",
28 src->name(), src->id(), dst->name(), dst->id());
30 if (! src->isRouter()) { // No specific link for router
32 if((src->id() == dst->id()) && hasLoopback_ ){
33 info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_, s_surf_parsing_link_up_down_t);
34 route->link_list->push_back(info.linkUp);
36 *lat += info.linkUp->getLatency();
41 if (hasLimiter_){ // limiter for sender
42 info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_ + (hasLoopback_?1:0), s_surf_parsing_link_up_down_t);
43 route->link_list->push_back((Link*)info.linkUp);
46 info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_ + (hasLoopback_?1:0) + (hasLimiter_?1:0), s_surf_parsing_link_up_down_t);
47 if (info.linkUp) { // link up
48 route->link_list->push_back(info.linkUp);
50 *lat += info.linkUp->getLatency();
56 route->link_list->push_back(backbone_);
58 *lat += backbone_->getLatency();
61 if (! dst->isRouter()) { // No specific link for router
62 info = xbt_dynar_get_as(privateLinks_, dst->id() * linkCountPerNode_ + hasLoopback_ + hasLimiter_, s_surf_parsing_link_up_down_t);
64 if (info.linkDown) { // link down
65 route->link_list->push_back(info.linkDown);
67 *lat += info.linkDown->getLatency();
69 if (hasLimiter_){ // limiter for receiver
70 info = xbt_dynar_get_as(privateLinks_, dst->id() * linkCountPerNode_ + hasLoopback_, s_surf_parsing_link_up_down_t);
71 route->link_list->push_back(info.linkUp);
76 void AsCluster::getGraph(xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges)
79 int table_size = xbt_dynar_length(vertices_);
82 xbt_node_t current, previous, backboneNode = nullptr, routerNode;
83 s_surf_parsing_link_up_down_t info;
85 xbt_assert(router_,"Malformed cluster. This may be because your platform file is a hypergraph while it must be a graph.");
87 /* create the router */
88 char *link_name = router_->name();
89 routerNode = new_xbt_graph_node(graph, link_name, nodes);
92 const char *link_nameR = backbone_->getName();
93 backboneNode = new_xbt_graph_node(graph, link_nameR, nodes);
95 new_xbt_graph_edge(graph, routerNode, backboneNode, edges);
98 for (isrc = 0; isrc < table_size; isrc++) {
99 src = xbt_dynar_get_as(vertices_, isrc, NetCard*);
101 if (! src->isRouter()) {
102 previous = new_xbt_graph_node(graph, src->name(), nodes);
104 info = xbt_dynar_get_as(privateLinks_, src->id(), s_surf_parsing_link_up_down_t);
106 if (info.linkUp) { // link up
108 const char *link_name = static_cast<simgrid::surf::Resource*>(
109 info.linkUp)->getName();
110 current = new_xbt_graph_node(graph, link_name, nodes);
111 new_xbt_graph_edge(graph, previous, current, edges);
114 new_xbt_graph_edge(graph, current, backboneNode, edges);
116 new_xbt_graph_edge(graph, current, routerNode, edges);
121 if (info.linkDown) { // link down
122 const char *link_name = static_cast<simgrid::surf::Resource*>(
123 info.linkDown)->getName();
124 current = new_xbt_graph_node(graph, link_name, nodes);
125 new_xbt_graph_edge(graph, previous, current, edges);
128 new_xbt_graph_edge(graph, current, backboneNode, edges);
130 new_xbt_graph_edge(graph, current, routerNode, edges);
138 void AsCluster::create_links_for_node(sg_platf_cluster_cbarg_t cluster, int id, int , int position){
139 s_surf_parsing_link_up_down_t info;
140 char* link_id = bprintf("%s_link_%d", cluster->id, id);
142 s_sg_platf_link_cbarg_t link;
143 memset(&link, 0, sizeof(link));
145 link.bandwidth = cluster->bw;
146 link.latency = cluster->lat;
147 link.policy = cluster->sharing_policy;
148 sg_platf_new_link(&link);
150 if (link.policy == SURF_LINK_FULLDUPLEX) {
151 char *tmp_link = bprintf("%s_UP", link_id);
152 info.linkUp = Link::byName(tmp_link);
154 tmp_link = bprintf("%s_DOWN", link_id);
155 info.linkDown = Link::byName(tmp_link);
158 info.linkUp = Link::byName(link_id);
159 info.linkDown = info.linkUp;
161 xbt_dynar_set(privateLinks_, position, &info);