2 * Master of a basic master/slave example in Java
4 * Copyright 2006-2012 The SimGrid Team. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package.
11 import org.simgrid.msg.Host;
12 import org.simgrid.msg.Msg;
13 import org.simgrid.msg.MsgException;
14 import org.simgrid.msg.Task;
15 import org.simgrid.msg.Process;;
17 public class Master extends Process {
18 public Master(Host host, String name, String[]args) {
19 super(host,name,args);
21 public void main(String[] args) throws MsgException {
22 if (args.length < 4) {
23 Msg.info("Master needs 4 arguments");
27 int tasksCount = Integer.valueOf(args[0]).intValue();
28 double taskComputeSize = Double.valueOf(args[1]).doubleValue();
29 double taskCommunicateSize = Double.valueOf(args[2]).doubleValue();
31 int slavesCount = Integer.valueOf(args[3]).intValue();
33 Msg.info("Hello! Got "+ slavesCount + " slaves and "+tasksCount+" tasks to process");
35 for (int i = 0; i < tasksCount; i++) {
36 Task task = new Task("Task_" + i, taskComputeSize, taskCommunicateSize);
37 //Msg.info("Sending \"" + task.getName()+ "\" to \"slave_" + i % slavesCount + "\"");
38 task.send("slave_"+(i%slavesCount));
41 Msg.info("All tasks have been dispatched. Let's tell everybody the computation is over.");
43 for (int i = 0; i < slavesCount; i++) {
44 FinalizeTask task = new FinalizeTask();
45 task.send("slave_"+(i%slavesCount));
48 Msg.info("Goodbye now!");