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/* Copyright (c) 2007-2025. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "simgrid/s4u.hpp"
XBT_LOG_NEW_DEFAULT_CATEGORY(test, "Pstate properties test");
namespace sg4 = simgrid::s4u;
static int dvfs()
{
double workload = 100E6;
sg4::Host* host = sg4::this_actor::get_host();
unsigned long nb = host->get_pstate_count();
XBT_INFO("Count of Processor states=%lu", nb);
XBT_INFO("Current power peak=%f", host->get_speed());
// Run a Computation
sg4::this_actor::execute(workload);
double exec_time = sg4::Engine::get_clock();
XBT_INFO("Computation1 duration: %.2f", exec_time);
// Change power peak
unsigned long new_pstate = 2;
XBT_INFO("Changing power peak value to %f (at index %lu)", host->get_pstate_speed(new_pstate), new_pstate);
host->set_pstate(new_pstate);
XBT_INFO("Current power peak=%f", host->get_speed());
// Run a second Computation
sg4::this_actor::execute(workload);
exec_time = sg4::Engine::get_clock() - exec_time;
XBT_INFO("Computation2 duration: %.2f", exec_time);
// Verify that the default pstate is set to 0
host = sg4::Host::by_name_or_null("MyHost2");
XBT_INFO("Count of Processor states=%lu", host->get_pstate_count());
XBT_INFO("Current power peak=%f", host->get_speed());
return 0;
}
int main(int argc, char* argv[])
{
sg4::Engine e(&argc, argv);
xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s ../platforms/energy_platform.xml\n", argv[0], argv[0]);
e.load_platform(argv[1]);
e.add_actor("dvfs_test", e.host_by_name("MyHost1"), dvfs);
e.add_actor("dvfs_test", e.host_by_name("MyHost2"), dvfs);
e.run();
XBT_INFO("Total simulation time: %e", sg4::Engine::get_clock());
return 0;
}
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