2 * Master of a basic master/slave example in Java
4 * Copyright (c) 2006-2013. The SimGrid Team.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package.
12 import org.simgrid.msg.Host;
13 import org.simgrid.msg.Msg;
14 import org.simgrid.msg.MsgException;
15 import org.simgrid.msg.Task;
16 import org.simgrid.msg.Process;;
18 public class Master extends Process {
19 public Master(Host host, String name, String[]args) {
20 super(host,name,args);
22 public void main(String[] args) throws MsgException {
23 if (args.length < 4) {
24 Msg.info("Master needs 4 arguments");
28 int tasksCount = Integer.valueOf(args[0]).intValue();
29 double taskComputeSize = Double.valueOf(args[1]).doubleValue();
30 double taskCommunicateSize = Double.valueOf(args[2]).doubleValue();
32 int slavesCount = Integer.valueOf(args[3]).intValue();
34 Msg.info("Hello! Got "+ slavesCount + " slaves and "+tasksCount+" tasks to process");
36 for (int i = 0; i < tasksCount; i++) {
37 Task task = new Task("Task_" + i, taskComputeSize, taskCommunicateSize);
38 //Msg.info("Sending \"" + task.getName()+ "\" to \"slave_" + i % slavesCount + "\"");
39 task.send("slave_"+(i%slavesCount));
42 Msg.info("All tasks have been dispatched. Let's tell everybody the computation is over.");
44 for (int i = 0; i < slavesCount; i++) {
45 FinalizeTask task = new FinalizeTask();
46 task.send("slave_"+(i%slavesCount));
49 Msg.info("Goodbye now!");