1 /* Copyright (c) 2013-2021. 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 "simgrid/kernel/routing/VivaldiZone.hpp"
7 #include "simgrid/kernel/routing/NetPoint.hpp"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "simgrid/s4u/Host.hpp"
10 #include "src/surf/network_interface.hpp"
11 #include "surf/surf.hpp"
13 #include <boost/algorithm/string.hpp>
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
23 xbt::Extension<NetPoint, Coords> Coords::EXTENSION_ID;
25 Coords::Coords(NetPoint* netpoint, const std::string& coordStr)
27 if (not Coords::EXTENSION_ID.valid())
28 Coords::EXTENSION_ID = NetPoint::extension_create<Coords>();
30 std::vector<std::string> string_values;
31 boost::split(string_values, coordStr, boost::is_any_of(" "));
32 xbt_assert(string_values.size() == 3, "Coordinates of %s must have 3 dimensions", netpoint->get_cname());
34 for (auto const& str : string_values)
36 coords.push_back(std::stod(str));
37 } catch (std::invalid_argument const& ia) {
38 throw std::invalid_argument(std::string("Invalid coordinate: ") + ia.what());
40 coords.shrink_to_fit();
42 netpoint->extension_set<Coords>(this);
43 XBT_DEBUG("Coords of %s %p: %s", netpoint->get_cname(), netpoint, coordStr.c_str());
45 } // namespace vivaldi
47 static inline double euclidean_dist_comp(double src_coord, double dst_coord)
49 return (src_coord - dst_coord) * (src_coord - dst_coord);
52 static const std::vector<double>& netpoint_get_coords(NetPoint* np)
54 const auto* coords = np->extension<vivaldi::Coords>();
55 xbt_assert(coords, "Please specify the Vivaldi coordinates of %s %s (%p)",
56 (np->is_netzone() ? "Netzone" : (np->is_host() ? "Host" : "Router")), np->get_cname(), np);
57 return coords->coords;
60 void VivaldiZone::set_peer_link(NetPoint* netpoint, double bw_in, double bw_out)
62 xbt_assert(netpoint->get_englobing_zone() == this,
63 "Cannot add a peer link to a netpoint that is not in this netzone");
65 std::string link_up = "link_" + netpoint->get_name() + "_UP";
66 std::string link_down = "link_" + netpoint->get_name() + "_DOWN";
67 const auto* linkUp = create_link(link_up, std::vector<double>{bw_out})->seal();
68 const auto* linkDown = create_link(link_down, std::vector<double>{bw_in})->seal();
69 add_route(netpoint, nullptr, nullptr, nullptr, {linkUp->get_impl()}, false);
70 add_route(nullptr, netpoint, nullptr, nullptr, {linkDown->get_impl()}, false);
73 void VivaldiZone::get_local_route(NetPoint* src, NetPoint* dst, Route* route, double* lat)
75 XBT_DEBUG("vivaldi getLocalRoute from '%s'[%u] '%s'[%u]", src->get_cname(), src->id(), dst->get_cname(), dst->id());
77 if (src->is_netzone()) {
78 std::string srcName = "router_" + src->get_name();
79 std::string dstName = "router_" + dst->get_name();
80 route->gw_src_ = s4u::Engine::get_instance()->netpoint_by_name_or_null(srcName);
81 route->gw_dst_ = s4u::Engine::get_instance()->netpoint_by_name_or_null(dstName);
84 StarZone::get_local_route(src, dst, route, lat);
85 /* Compute the extra latency due to the euclidean distance if needed */
87 std::vector<double> srcCoords = netpoint_get_coords(src);
88 std::vector<double> dstCoords = netpoint_get_coords(dst);
90 double euclidean_dist =
91 sqrt(euclidean_dist_comp(srcCoords[0], dstCoords[0]) + euclidean_dist_comp(srcCoords[1], dstCoords[1])) +
92 fabs(srcCoords[2]) + fabs(dstCoords[2]);
94 XBT_DEBUG("Updating latency %f += %f", *lat, euclidean_dist);
95 *lat += euclidean_dist / 1000.0; // From .ms to .s
99 } // namespace routing
100 } // namespace kernel
103 NetZone* create_vivaldi_zone(const std::string& name)
105 return (new kernel::routing::VivaldiZone(name))->get_iface();
109 } // namespace simgrid