1 /* Copyright (c) 2007-2022. 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 #include "simgrid/plugins/energy.h"
9 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "Messages specific for this s4u example");
10 namespace sg4 = simgrid::s4u;
14 sg4::Host* host1 = sg4::Host::by_name("MyHost1");
15 sg4::Host* host2 = sg4::Host::by_name("MyHost2");
17 XBT_INFO("Energetic profile: %s", host1->get_property("wattage_per_state"));
18 XBT_INFO("Initial peak speed=%.0E flop/s; Energy dissipated =%.0E J", host1->get_speed(),
19 sg_host_get_consumed_energy(host1));
21 double start = sg4::Engine::get_clock();
22 XBT_INFO("Sleep for 10 seconds");
23 sg4::this_actor::sleep_for(10);
24 XBT_INFO("Done sleeping (duration: %.2f s). Current peak speed=%.0E; Energy dissipated=%.2f J",
25 sg4::Engine::get_clock() - start, host1->get_speed(), sg_host_get_consumed_energy(host1));
28 start = sg4::Engine::get_clock();
29 double flopAmount = 100E6;
30 XBT_INFO("Run a computation of %.0E flops", flopAmount);
31 sg4::this_actor::execute(flopAmount);
33 "Computation done (duration: %.2f s). Current peak speed=%.0E flop/s; Current consumption: from %.0fW to %.0fW"
34 " depending on load; Energy dissipated=%.0f J",
35 sg4::Engine::get_clock() - start, host1->get_speed(), sg_host_get_wattmin_at(host1, host1->get_pstate()),
36 sg_host_get_wattmax_at(host1, host1->get_pstate()), sg_host_get_consumed_energy(host1));
38 // ========= Change power peak =========
40 host1->set_pstate(pstate);
41 XBT_INFO("========= Requesting pstate %d (speed should be of %.0E flop/s and is of %.0E flop/s)", pstate,
42 host1->get_pstate_speed(pstate), host1->get_speed());
44 // Run another computation
45 start = sg4::Engine::get_clock();
46 XBT_INFO("Run a computation of %.0E flops", flopAmount);
47 sg4::this_actor::execute(flopAmount);
48 XBT_INFO("Computation done (duration: %.2f s). Current peak speed=%.0E flop/s; Energy dissipated=%.0f J",
49 sg4::Engine::get_clock() - start, host1->get_speed(), sg_host_get_consumed_energy(host1));
51 start = sg4::Engine::get_clock();
52 XBT_INFO("Sleep for 4 seconds");
53 sg4::this_actor::sleep_for(4);
54 XBT_INFO("Done sleeping (duration: %.2f s). Current peak speed=%.0E flop/s; Energy dissipated=%.0f J",
55 sg4::Engine::get_clock() - start, host1->get_speed(), sg_host_get_consumed_energy(host1));
57 // =========== Turn the other host off ==========
58 XBT_INFO("Turning MyHost2 off, and sleeping another 10 seconds. MyHost2 dissipated %.0f J so far.",
59 sg_host_get_consumed_energy(host2));
61 start = sg4::Engine::get_clock();
62 sg4::this_actor::sleep_for(10);
63 XBT_INFO("Done sleeping (duration: %.2f s). Current peak speed=%.0E flop/s; Energy dissipated=%.0f J",
64 sg4::Engine::get_clock() - start, host1->get_speed(), sg_host_get_consumed_energy(host1));
67 int main(int argc, char* argv[])
69 sg_host_energy_plugin_init();
70 sg4::Engine e(&argc, argv);
72 xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s ../platforms/energy_platform.xml\n", argv[0], argv[0]);
74 e.load_platform(argv[1]);
75 sg4::Actor::create("dvfs_test", e.host_by_name("MyHost1"), dvfs);
79 XBT_INFO("End of simulation.");