1 /* Copyright (c) 2006-2023. 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/s4u.hpp>
7 namespace sg4 = simgrid::s4u;
9 constexpr double BW_CPU = 1e12;
10 constexpr double LAT_CPU = 0;
12 constexpr double BW_NODE = 1e11;
13 constexpr double LAT_NODE = 1e-8;
15 constexpr double BW_NETWORK = 1.25e10;
16 constexpr double LAT_NETWORK = 1e-7;
18 static std::string int_string(int n)
20 return simgrid::xbt::string_printf("%02d", n);
25 * This function creates one node made of nb_cpu CPUs.
27 static sg4::NetZone* create_node(const sg4::NetZone* root, const std::string& node_name, const int nb_cpu)
29 auto* node = sg4::create_star_zone(node_name);
30 node->set_parent(root);
32 /* create all hosts and connect them to outside world */
33 for (int i = 0; i < nb_cpu; i++) {
34 const auto& cpuname = node_name + "_cpu-" + int_string(i);
35 const auto& linkname = "link_" + cpuname;
37 const sg4::Host* host = node->create_host(cpuname, 1e9);
38 const sg4::Link* l = node->create_split_duplex_link(linkname, BW_CPU)->set_latency(LAT_CPU)->seal();
40 node->add_route(host->get_netpoint(), nullptr, nullptr, nullptr, {{l, sg4::LinkInRoute::Direction::UP}}, true);
48 * This function creates one super-node made of nb_nodes nodes with nb_cpu CPUs.
50 static sg4::NetZone* create_supernode(const sg4::NetZone* root, const std::string& supernode_name, const int nb_nodes,
53 auto* supernode = sg4::create_star_zone(supernode_name);
54 supernode->set_parent(root);
56 /* create all nodes and connect them to outside world */
57 for (int i = 0; i < nb_nodes; i++) {
58 const auto& node_name = supernode_name + "_node-" + int_string(i);
59 const auto& linkname = "link_" + node_name;
61 sg4::NetZone* node = create_node(supernode, node_name, nb_cpu);
62 const auto router = node->create_router("router_" + node_name);
65 const sg4::Link* l = supernode->create_split_duplex_link(linkname, BW_NODE)->set_latency(LAT_NODE)->seal();
66 supernode->add_route(node->get_netpoint(), nullptr, router, nullptr, {{l, sg4::LinkInRoute::Direction::UP}}, true);
73 * This function creates one cluster of nb_supernodes super-nodes made of nb_nodes nodes with nb_cpu CPUs.
75 static sg4::NetZone* create_cluster(const std::string& cluster_name, const int nb_supernodes, const int nb_nodes,
78 auto* cluster = sg4::create_star_zone(cluster_name);
80 /* create all supernodes and connect them to outside world */
81 for (int i = 0; i < nb_supernodes; i++) {
82 const auto& supernode_name = cluster_name + "_supernode-" + int_string(i);
83 const auto& linkname = "link_" + supernode_name;
85 sg4::NetZone* supernode = create_supernode(cluster, supernode_name, nb_nodes, nb_cpu);
86 const auto router = supernode->create_router("router_" + supernode_name);
89 const sg4::Link* l = cluster->create_split_duplex_link(linkname, BW_NETWORK)->set_latency(LAT_NETWORK)->seal();
90 cluster->add_route(supernode->get_netpoint(), nullptr, router, nullptr, {{l, sg4::LinkInRoute::Direction::UP}},
96 extern "C" void load_platform(const sg4::Engine& e);
97 void load_platform(const sg4::Engine&)
99 create_cluster("cluster", 4, 6, 2)->seal();