1 /* Copyright (c) 2009-2021. 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/ClusterZone.hpp"
7 #include "simgrid/kernel/routing/NetPoint.hpp"
8 #include "simgrid/kernel/routing/RoutedZone.hpp"
9 #include "src/surf/network_interface.hpp"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster, surf, "Routing part of surf");
13 /* This routing is specifically setup to represent clusters, aka homogeneous sets of machines
14 * Note that a router is created, easing the interconnection with the rest of the world. */
20 void ClusterBase::set_loopback()
22 if (not has_loopback_) {
23 num_links_per_node_++;
28 void ClusterBase::set_limiter()
30 if (not has_limiter_) {
31 num_links_per_node_++;
36 void ClusterBase::set_link_characteristics(double bw, double lat, s4u::Link::SharingPolicy sharing_policy)
38 link_sharing_policy_ = sharing_policy;
43 void ClusterBase::add_private_link_at(unsigned int position, std::pair<resource::LinkImpl*, resource::LinkImpl*> link)
45 private_links_.insert({position, link});
48 void ClusterBase::set_gateway(unsigned int position, NetPoint* gateway)
50 xbt_assert(not gateway || not gateway->is_netzone(), "ClusterBase: gateway cannot be another netzone %s",
51 gateway->get_cname());
52 gateways_[position] = gateway;
55 NetPoint* ClusterBase::get_gateway(unsigned int position)
57 NetPoint* res = nullptr;
58 auto it = gateways_.find(position);
59 if (it != gateways_.end()) {
65 void ClusterBase::fill_leaf_from_cb(unsigned int position, const std::vector<unsigned int>& dimensions,
66 const s4u::ClusterCallbacks& set_callbacks, NetPoint** node_netpoint,
67 s4u::Link** lb_link, s4u::Link** limiter_link)
69 xbt_assert(node_netpoint, "Invalid node_netpoint parameter");
70 xbt_assert(lb_link, "Invalid lb_link parameter");
71 xbt_assert(limiter_link, "Invalid limiter_link paramater");
73 *limiter_link = nullptr;
75 // auxiliary function to get dims from index
76 auto index_to_dims = [&dimensions](int index) {
77 std::vector<unsigned int> dims_array(dimensions.size());
78 for (auto i = static_cast<int>(dimensions.size() - 1); i >= 0; --i) {
82 unsigned int value = index % dimensions[i];
83 dims_array[i] = value;
84 index = (index / dimensions[i]);
89 kernel::routing::NetPoint* netpoint = nullptr;
90 kernel::routing::NetPoint* gw = nullptr;
91 auto dims = index_to_dims(position);
92 std::tie(netpoint, gw) = set_callbacks.netpoint(get_iface(), dims, position);
93 xbt_assert(netpoint, "set_netpoint(elem=%u): Invalid netpoint (nullptr)", position);
94 if (netpoint->is_netzone()) {
95 xbt_assert(gw && not gw->is_netzone(),
96 "set_netpoint(elem=%u): Netpoint (%s) is a netzone, but gateway (%s) is invalid", position,
97 netpoint->get_cname(), gw ? gw->get_cname() : "nullptr");
99 xbt_assert(not gw, "set_netpoint: Netpoint (%s) isn't netzone, gateway must be nullptr", netpoint->get_cname());
102 set_gateway(position, gw);
104 if (set_callbacks.loopback) {
105 s4u::Link* loopback = set_callbacks.loopback(get_iface(), dims, position);
106 xbt_assert(loopback, "set_loopback: Invalid loopback link (nullptr) for element %u", position);
108 add_private_link_at(node_pos(netpoint->id()), {loopback->get_impl(), loopback->get_impl()});
112 if (set_callbacks.limiter) {
113 s4u::Link* limiter = set_callbacks.limiter(get_iface(), dims, position);
114 xbt_assert(limiter, "set_limiter: Invalid limiter link (nullptr) for element %u", position);
116 add_private_link_at(node_pos_with_loopback(netpoint->id()), {limiter->get_impl(), limiter->get_impl()});
117 *limiter_link = limiter;
119 *node_netpoint = netpoint;
122 } // namespace routing
123 } // namespace kernel
124 } // namespace simgrid