1 /* Copyright (c) 2013-2016. 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 <boost/algorithm/string.hpp>
8 #include "simgrid/s4u/engine.hpp"
9 #include "simgrid/s4u/host.hpp"
11 #include "src/kernel/routing/NetPoint.hpp"
12 #include "src/kernel/routing/VivaldiZone.hpp"
13 #include "src/surf/network_interface.hpp"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
21 simgrid::xbt::Extension<NetPoint, Coords> Coords::EXTENSION_ID;
23 Coords::Coords(NetPoint* netpoint, const char* coordStr)
25 if (!Coords::EXTENSION_ID.valid())
26 Coords::EXTENSION_ID = NetPoint::extension_create<Coords>();
28 std::vector<std::string> string_values;
29 boost::split(string_values, coordStr, boost::is_any_of(" "));
30 xbt_assert(string_values.size() == 3, "Coordinates of %s must have 3 dimensions", netpoint->cname());
32 for (auto str : string_values)
33 coords.push_back(xbt_str_parse_double(str.c_str(), "Invalid coordinate: %s"));
34 coords.shrink_to_fit();
36 netpoint->extension_set<Coords>(this);
37 XBT_DEBUG("Coords of %s %p: %s", netpoint->cname(), netpoint, coordStr);
39 Coords::~Coords() = default;
40 }; // namespace vivaldi
42 static inline double euclidean_dist_comp(int index, std::vector<double>* src, std::vector<double>* dst)
44 double src_coord = src->at(index);
45 double dst_coord = dst->at(index);
47 return (src_coord - dst_coord) * (src_coord - dst_coord);
50 static std::vector<double>* getCoordsFromNetpoint(NetPoint* np)
52 simgrid::kernel::routing::vivaldi::Coords* coords = np->extension<simgrid::kernel::routing::vivaldi::Coords>();
53 xbt_assert(coords, "Please specify the Vivaldi coordinates of %s %s (%p)",
54 (np->isNetZone() ? "Netzone" : (np->isHost() ? "Host" : "Router")), np->cname(), np);
55 return &coords->coords;
57 VivaldiZone::VivaldiZone(NetZone* father, const char* name) : ClusterZone(father, name)
61 void VivaldiZone::setPeerLink(NetPoint* netpoint, double bw_in, double bw_out, const char* coord)
63 xbt_assert(netpoint->netzone() == this, "Cannot add a peer link to a netpoint that is not in this netzone");
65 new simgrid::kernel::routing::vivaldi::Coords(netpoint, coord);
67 std::string link_up = "link_" + netpoint->name() + "_UP";
68 std::string link_down = "link_" + netpoint->name() + "_DOWN";
69 surf::LinkImpl* linkUp = surf_network_model->createLink(link_up.c_str(), bw_out, 0, SURF_LINK_SHARED);
70 surf::LinkImpl* linkDown = surf_network_model->createLink(link_down.c_str(), bw_in, 0, SURF_LINK_SHARED);
71 privateLinks_.insert({netpoint->id(), {linkUp, linkDown}});
74 void VivaldiZone::getLocalRoute(NetPoint* src, NetPoint* dst, sg_platf_route_cbarg_t route, double* lat)
76 XBT_DEBUG("vivaldi getLocalRoute from '%s'[%d] '%s'[%d]", src->cname(), src->id(), dst->cname(), dst->id());
78 if (src->isNetZone()) {
79 std::string srcName = "router_" + src->name();
80 std::string dstName = "router_" + dst->name();
81 route->gw_src = simgrid::s4u::Engine::instance()->netpointByNameOrNull(srcName.c_str());
82 route->gw_dst = simgrid::s4u::Engine::instance()->netpointByNameOrNull(dstName.c_str());
85 /* Retrieve the private links */
86 if (privateLinks_.find(src->id()) != privateLinks_.end()) {
87 std::pair<surf::LinkImpl*, surf::LinkImpl*> info = privateLinks_.at(src->id());
89 route->link_list->push_back(info.first);
91 *lat += info.first->latency();
94 if (privateLinks_.find(dst->id()) != privateLinks_.end()) {
95 std::pair<surf::LinkImpl*, surf::LinkImpl*> info = privateLinks_.at(dst->id());
97 route->link_list->push_back(info.second);
99 *lat += info.second->latency();
103 /* Compute the extra latency due to the euclidean distance if needed */
105 std::vector<double>* srcCoords = getCoordsFromNetpoint(src);
106 std::vector<double>* dstCoords = getCoordsFromNetpoint(dst);
108 double euclidean_dist =
109 sqrt(euclidean_dist_comp(0, srcCoords, dstCoords) + euclidean_dist_comp(1, srcCoords, dstCoords)) +
110 fabs(srcCoords->at(2)) + fabs(dstCoords->at(2));
112 XBT_DEBUG("Updating latency %f += %f", *lat, euclidean_dist);
113 *lat += euclidean_dist / 1000.0; // From .ms to .s