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/* Copyright (c) 2012-2018. 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 cloud.masterworker;
import org.simgrid.msg.Host;
import org.simgrid.msg.Msg;
import org.simgrid.msg.MsgException;
import org.simgrid.msg.Process;
import org.simgrid.msg.Task;
import org.simgrid.msg.VM;
public class Master extends Process {
private Host[] hosts;
public Master(Host host, String name, Host[] hosts) {
super(host,name,null);
this.hosts = hosts;
}
public void main(String[] args) throws MsgException {
int workersCount = Main.NHOSTS;
for (int step = 1; step <= Main.NSTEPS ; step++) {
// Create one VM per host and bind a process inside each one.
for (int i = 0; i < workersCount; i++) {
Msg.verb("create VM0-s"+step+"-"+i);
VM vm = new VM(hosts[i+1],"VM0-s"+step+"-"+i);
vm.start();
Worker worker= new Worker(vm,"WK:"+step+":"+ i);
Msg.verb("Put Worker "+worker.getName()+ " on "+vm.getName());
worker.start();
}
VM[] vms = VM.all();
Msg.info("Launched " + vms.length + " VMs");
Msg.info("Send some work to everyone");
workBatch(workersCount,"WK:"+step+":");
Msg.info("Suspend all VMs, wait a while, resume them, migrate them and shut them down.");
for (VM vm : vms) {
Msg.verb("Suspend "+vm.getName());
vm.suspend();
}
Msg.verb("Wait a while, and resume all VMs.");
waitFor(2);
for (VM vm : vms)
vm.resume();
Msg.verb("Sleep long enough for everyone to be done with previous batch of work");
waitFor(1000*step - Msg.getClock());
Msg.verb("Migrate everyone to "+hosts[3].getName());
for (VM vm : vms) {
Msg.verb("Migrate "+vm.getName()+" to "+hosts[3].getName());
vm.migrate(hosts[3]);
}
Msg.verb("Let's kill everyone.");
for (VM vm : vms)
vm.destroy();
Msg.info("XXXXXXXXXXXXXXX Step "+step+" done.");
}
}
public void workBatch(int workersCount, String nameRoot) throws MsgException {
for (int i = 0; i < workersCount; i++) {
Task task = new Task("Task "+nameRoot + i, Main.TASK_COMP_SIZE, Main.TASK_COMM_SIZE);
Msg.verb("Sending to "+ nameRoot + i);
task.send(nameRoot + i);
}
}
}
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