SimGrid  3.18
Versatile Simulation of Distributed Systems
examples/s4u/exec-dvfs/s4u-exec-dvfs.cpp
/* Copyright (c) 2007-2017. 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");
static int dvfs()
{
double workload = 100E6;
int nb = host->getPstatesCount();
XBT_INFO("Count of Processor states=%d", nb);
XBT_INFO("Current power peak=%f", host->getSpeed());
// Run a task
double task_time = simgrid::s4u::Engine::getClock();
XBT_INFO("Task1 simulation time: %e", task_time);
// Change power peak
int new_pstate = 2;
XBT_INFO("Changing power peak value to %f (at index %d)", host->getPstateSpeed(new_pstate), new_pstate);
host->setPstate(new_pstate);
XBT_INFO("Current power peak=%f", host->getSpeed());
// Run a second task
task_time = simgrid::s4u::Engine::getClock() - task_time;
XBT_INFO("Task2 simulation time: %e", task_time);
// Verify that the default pstate is set to 0
XBT_INFO("Count of Processor states=%d", host->getPstatesCount());
XBT_INFO("Current power peak=%f", host->getSpeed());
return 0;
}
int main(int argc, char* argv[])
{
simgrid::s4u::Engine e(&argc, argv);
xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s msg_platform.xml\n", argv[0], argv[0]);
e.loadPlatform(argv[1]);
e.run();
XBT_INFO("Total simulation time: %e", e.getClock());
return 0;
}