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/* Master of a basic master/worker example in Java */
/* Copyright (c) 2006-2018. 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 app.masterworker;
import org.simgrid.msg.Host;
import org.simgrid.msg.Msg;
import org.simgrid.msg.MsgException;
import org.simgrid.msg.Task;
import org.simgrid.msg.Process;
public class Master extends Process {
public Master(Host host, String name, String[]args) {
super(host,name,args);
}
public void main(String[] args) throws MsgException {
if (args.length < 4) {
Msg.info("Master needs 4 arguments");
System.exit(1);
}
int tasksCount = Integer.parseInt(args[0]);
double taskComputeSize = Double.parseDouble(args[1]);
double taskCommunicateSize = Double.parseDouble(args[2]);
int workersCount = Integer.parseInt(args[3]);
Msg.info("Hello! My PID is "+getPID()+". Got "+ workersCount + " workers and "+tasksCount+" tasks to process");
for (int i = 0; i < tasksCount; i++) {
Task task = new Task("Task_" + i, taskComputeSize, taskCommunicateSize);
Msg.debug("Sending \"" + task.getName()+ "\" to \"worker_" + i % workersCount + "\"");
task.send("worker_"+(i%workersCount));
}
Msg.info("All tasks have been dispatched. Let's tell everybody the computation is over.");
for (int i = 0; i < workersCount; i++) {
Task task = new Task("finalize", 0, 0);
task.send("worker_"+(i%workersCount));
}
Msg.info("Goodbye now!");
}
}
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