1 /* Copyright (c) 2013-2019. 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 "src/surf/xml/platf_private.hpp"
12 #include "surf/surf.hpp"
14 #include <boost/algorithm/string.hpp>
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
22 simgrid::xbt::Extension<NetPoint, Coords> Coords::EXTENSION_ID;
24 Coords::Coords(NetPoint* netpoint, const std::string& coordStr)
26 if (not Coords::EXTENSION_ID.valid())
27 Coords::EXTENSION_ID = NetPoint::extension_create<Coords>();
29 std::vector<std::string> string_values;
30 boost::split(string_values, coordStr, boost::is_any_of(" "));
31 xbt_assert(string_values.size() == 3, "Coordinates of %s must have 3 dimensions", netpoint->get_cname());
33 for (auto const& str : string_values)
35 coords.push_back(std::stod(str));
36 } catch (std::invalid_argument const& ia) {
37 throw std::invalid_argument(std::string("Invalid coordinate: ") + ia.what());
39 coords.shrink_to_fit();
41 netpoint->extension_set<Coords>(this);
42 XBT_DEBUG("Coords of %s %p: %s", netpoint->get_cname(), netpoint, coordStr.c_str());
44 }; // namespace vivaldi
46 static inline double euclidean_dist_comp(int index, std::vector<double>* src, std::vector<double>* dst)
48 double src_coord = src->at(index);
49 double dst_coord = dst->at(index);
51 return (src_coord - dst_coord) * (src_coord - dst_coord);
54 static std::vector<double>* netpoint_get_coords(NetPoint* np)
56 simgrid::kernel::routing::vivaldi::Coords* coords = np->extension<simgrid::kernel::routing::vivaldi::Coords>();
57 xbt_assert(coords, "Please specify the Vivaldi coordinates of %s %s (%p)",
58 (np->is_netzone() ? "Netzone" : (np->is_host() ? "Host" : "Router")), np->get_cname(), np);
59 return &coords->coords;
62 VivaldiZone::VivaldiZone(NetZoneImpl* father, const std::string& name, resource::NetworkModel* netmodel)
63 : ClusterZone(father, name, netmodel)
67 void VivaldiZone::set_peer_link(NetPoint* netpoint, double bw_in, double bw_out, const std::string& coord)
69 xbt_assert(netpoint->get_englobing_zone() == this,
70 "Cannot add a peer link to a netpoint that is not in this netzone");
72 new simgrid::kernel::routing::vivaldi::Coords(netpoint, coord);
74 std::string link_up = "link_" + netpoint->get_name() + "_UP";
75 std::string link_down = "link_" + netpoint->get_name() + "_DOWN";
76 resource::LinkImpl* linkUp =
77 network_model_->create_link(link_up, std::vector<double>(1, bw_out), 0, s4u::Link::SharingPolicy::SHARED);
78 resource::LinkImpl* linkDown =
79 network_model_->create_link(link_down, std::vector<double>(1, bw_in), 0, s4u::Link::SharingPolicy::SHARED);
80 private_links_.insert({netpoint->id(), {linkUp, linkDown}});
83 void VivaldiZone::get_local_route(NetPoint* src, NetPoint* dst, RouteCreationArgs* route, double* lat)
85 XBT_DEBUG("vivaldi getLocalRoute from '%s'[%u] '%s'[%u]", src->get_cname(), src->id(), dst->get_cname(), dst->id());
87 if (src->is_netzone()) {
88 std::string srcName = "router_" + src->get_name();
89 std::string dstName = "router_" + dst->get_name();
90 route->gw_src = simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(srcName);
91 route->gw_dst = simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(dstName);
94 /* Retrieve the private links */
95 auto src_link = private_links_.find(src->id());
96 if (src_link != private_links_.end()) {
97 std::pair<resource::LinkImpl*, resource::LinkImpl*> info = src_link->second;
99 route->link_list.push_back(info.first);
101 *lat += info.first->get_latency();
104 XBT_DEBUG("Source of private link (%u) doesn't exist", src->id());
107 auto dst_link = private_links_.find(dst->id());
108 if (dst_link != private_links_.end()) {
109 std::pair<resource::LinkImpl*, resource::LinkImpl*> info = dst_link->second;
111 route->link_list.push_back(info.second);
113 *lat += info.second->get_latency();
116 XBT_DEBUG("Destination of private link (%u) doesn't exist", dst->id());
119 /* Compute the extra latency due to the euclidean distance if needed */
121 std::vector<double>* srcCoords = netpoint_get_coords(src);
122 std::vector<double>* dstCoords = netpoint_get_coords(dst);
124 double euclidean_dist =
125 sqrt(euclidean_dist_comp(0, srcCoords, dstCoords) + euclidean_dist_comp(1, srcCoords, dstCoords)) +
126 fabs(srcCoords->at(2)) + fabs(dstCoords->at(2));
128 XBT_DEBUG("Updating latency %f += %f", *lat, euclidean_dist);
129 *lat += euclidean_dist / 1000.0; // From .ms to .s