1 /* Copyright (c) 2006-2022. 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/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) {
19 return simgrid::xbt::string_printf("%02d", n);
24 * This function creates one node made of nb_cpu CPUs.
26 static sg4::NetZone *create_node(const sg4::NetZone* root, const std::string& node_name,
28 auto* node = sg4::create_star_zone(node_name);
29 node->set_parent(root);
31 /* create all hosts and connect them to outside world */
32 for (int i=0; i<nb_cpu; i++) {
33 const auto& cpuname = node_name + "_cpu-" + int_string(i);
34 const auto& linkname = "link_" + cpuname;
36 const sg4::Host* host = node->create_host(cpuname, 1e9);
37 const sg4::Link* l = node->create_split_duplex_link(linkname, BW_CPU)->set_latency(LAT_CPU)->seal();
39 node->add_route(host->get_netpoint(), nullptr, nullptr, nullptr, {{l, sg4::LinkInRoute::Direction::UP}}, true);
47 * This function creates one super-node made of nb_nodes nodes with nb_cpu CPUs.
49 static sg4::NetZone *create_supernode(const sg4::NetZone* root, const std::string& supernode_name,
50 const int nb_nodes, const int nb_cpu) {
51 auto* supernode = sg4::create_star_zone(supernode_name);
52 supernode->set_parent(root);
54 /* create all nodes and connect them to outside world */
55 for (int i=0; i<nb_nodes; i++) {
56 const auto& node_name = supernode_name + "_node-" + int_string(i);
57 const auto& linkname = "link_" + node_name;
59 sg4::NetZone *node = create_node(supernode, node_name, nb_cpu);
60 const auto router = node->create_router("router_" + node_name);
63 const sg4::Link* l = supernode->create_split_duplex_link(linkname, BW_NODE)->set_latency(LAT_NODE)->seal();
64 supernode->add_route(node->get_netpoint(), nullptr, router, nullptr, {{l, sg4::LinkInRoute::Direction::UP}}, true);
71 * This function creates one cluster of nb_supernodes super-nodes made of nb_nodes nodes with nb_cpu CPUs.
73 static sg4::NetZone *create_cluster(const std::string& cluster_name, const int nb_supernodes,
74 const int nb_nodes, const int nb_cpu) {
75 auto* cluster = sg4::create_star_zone(cluster_name);
77 /* create all supernodes and connect them to outside world */
78 for (int i=0; i<nb_supernodes; i++) {
79 const auto& supernode_name = cluster_name + "_supernode-" + int_string(i);
80 const auto& linkname = "link_" + supernode_name;
82 sg4::NetZone *supernode = create_supernode(cluster, supernode_name, nb_nodes, nb_cpu);
83 const auto router = supernode->create_router("router_" + supernode_name);
86 const sg4::Link* l = cluster->create_split_duplex_link(linkname, BW_NETWORK)->set_latency(LAT_NETWORK)->seal();
87 cluster->add_route(supernode->get_netpoint(), nullptr, router, nullptr, {{l, sg4::LinkInRoute::Direction::UP}}, true);
92 extern "C" void load_platform(const sg4::Engine& e);
93 void load_platform(const sg4::Engine& e)
95 create_cluster("cluster", 4, 6, 2)->seal();