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/* Copyright (c) 2016-2018. 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. */
package energy.pstate;
import org.simgrid.msg.Host;
import org.simgrid.msg.HostFailureException;
import org.simgrid.msg.HostNotFoundException;
import org.simgrid.msg.Msg;
import org.simgrid.msg.Process;
import org.simgrid.msg.Task;
import org.simgrid.msg.TaskCancelledException;
/* This class is a process in charge of running the test. It creates and starts the VMs, and fork processes within VMs */
public class PstateRunner extends Process {
public class DVFS extends Process {
public DVFS (Host host, String name) {
super(host, name);
}
@Override
public void main(String[] strings) throws HostNotFoundException, HostFailureException, TaskCancelledException {
double workload = 100E6;
int newPstate = 2;
Host host = getHost();
int nb = host.getPstatesCount();
Msg.info("Count of Processor states="+ nb);
double currentPeak = host.getCurrentPowerPeak();
Msg.info("Current power peak=" + currentPeak);
// Run a task
Task task1 = new Task("t1", workload, 0);
task1.execute();
double taskTime = Msg.getClock();
Msg.info("Task1 simulation time: "+ taskTime);
// Change power peak
if ((newPstate >= nb) || (newPstate < 0)){
Msg.info("Cannot set pstate "+newPstate+"%d, host supports only "+nb+" pstates.");
return;
}
double peakAt = host.getPowerPeakAt(newPstate);
Msg.info("Changing power peak value to "+peakAt+" (at index "+newPstate+")");
host.setPstate(newPstate);
currentPeak = host.getCurrentPowerPeak();
Msg.info("Current power peak="+ currentPeak);
// Run a second task
new Task("t1", workload, 0).execute();
taskTime = Msg.getClock() - taskTime;
Msg.info("Task2 simulation time: "+ taskTime);
// Verify the default pstate is set to 0
host = Host.getByName("MyHost2");
int nb2 = host.getPstatesCount();
Msg.info("Count of Processor states="+ nb2);
double currentPeak2 = host.getCurrentPowerPeak();
Msg.info("Current power peak=" + currentPeak2);
}
}
PstateRunner(Host host, String name, String[] args) {
super(host, name, args);
}
@Override
public void main(String[] strings) throws HostNotFoundException, HostFailureException {
new DVFS (Host.getByName("MyHost1"), "dvfs_test").start();
new DVFS (Host.getByName("MyHost2"), "dvfs_test").start();
}
}
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