1 /* Copyright (c) 2009-2022. 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/kernel/resource/StandardLinkImpl.hpp"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ker_routing_cluster, ker_routing, "Kernel Cluster Routing");
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. */
16 namespace simgrid::kernel::routing {
18 void ClusterBase::set_loopback()
20 if (not has_loopback_) {
21 num_links_per_node_++;
26 void ClusterBase::set_limiter()
28 if (not has_limiter_) {
29 num_links_per_node_++;
34 void ClusterBase::set_link_characteristics(double bw, double lat, s4u::Link::SharingPolicy sharing_policy)
36 link_sharing_policy_ = sharing_policy;
41 void ClusterBase::add_private_link_at(unsigned long position,
42 std::pair<resource::StandardLinkImpl*, resource::StandardLinkImpl*> link)
44 private_links_.try_emplace(position, link);
47 void ClusterBase::set_gateway(unsigned long position, NetPoint* gateway)
49 xbt_assert(not gateway || not gateway->is_netzone(), "ClusterBase: gateway cannot be another netzone %s",
50 gateway->get_cname());
51 gateways_[position] = gateway;
54 NetPoint* ClusterBase::get_gateway(unsigned long position)
56 auto it = gateways_.find(position);
57 return it == gateways_.end() ? nullptr : it->second;
60 void ClusterBase::fill_leaf_from_cb(unsigned long position, const std::vector<unsigned long>& dimensions,
61 const s4u::ClusterCallbacks& set_callbacks, NetPoint** node_netpoint,
62 s4u::Link** lb_link, s4u::Link** limiter_link)
64 xbt_assert(node_netpoint, "Invalid node_netpoint parameter");
65 xbt_assert(lb_link, "Invalid lb_link parameter");
66 xbt_assert(limiter_link, "Invalid limiter_link paramater");
68 *limiter_link = nullptr;
70 // auxiliary function to get dims from index
71 auto index_to_dims = [&dimensions](unsigned long index) {
72 std::vector<unsigned long> dims_array(dimensions.size());
73 for (auto i = static_cast<int>(dimensions.size() - 1); i >= 0; --i) {
77 unsigned long value = index % dimensions[i];
78 dims_array[i] = value;
79 index = (index / dimensions[i]);
84 kernel::routing::NetPoint* netpoint = nullptr;
85 kernel::routing::NetPoint* gw = nullptr;
86 auto dims = index_to_dims(position);
87 std::tie(netpoint, gw) = set_callbacks.netpoint(get_iface(), dims, position);
88 xbt_assert(netpoint, "set_netpoint(elem=%lu): Invalid netpoint (nullptr)", position);
89 if (netpoint->is_netzone()) {
90 xbt_assert(gw && not gw->is_netzone(),
91 "set_netpoint(elem=%lu): Netpoint (%s) is a netzone, but gateway (%s) is invalid", position,
92 netpoint->get_cname(), gw ? gw->get_cname() : "nullptr");
94 xbt_assert(not gw, "set_netpoint: Netpoint (%s) isn't netzone, gateway must be nullptr", netpoint->get_cname());
97 set_gateway(position, gw);
99 if (set_callbacks.loopback) {
100 s4u::Link* loopback = set_callbacks.loopback(get_iface(), dims, position);
101 xbt_assert(loopback, "set_loopback: Invalid loopback link (nullptr) for element %lu", position);
103 add_private_link_at(node_pos(netpoint->id()), {loopback->get_impl(), loopback->get_impl()});
107 if (set_callbacks.limiter) {
108 s4u::Link* limiter = set_callbacks.limiter(get_iface(), dims, position);
109 xbt_assert(limiter, "set_limiter: Invalid limiter link (nullptr) for element %lu", position);
111 add_private_link_at(node_pos_with_loopback(netpoint->id()), {limiter->get_impl(), limiter->get_impl()});
112 *limiter_link = limiter;
114 *node_netpoint = netpoint;
117 } // namespace simgrid::kernel::routing