1 /* Copyright (c) 2006-2014, 2016. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
8 import java.util.ArrayList;
10 import org.simgrid.msg.Msg;
11 import org.simgrid.msg.Comm;
12 import org.simgrid.msg.Host;
13 import org.simgrid.msg.Task;
14 import org.simgrid.msg.Process;
15 import org.simgrid.msg.MsgException;
17 public class Master extends Process {
18 public Master(Host host, String name, String[]args) {
19 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");
35 ArrayList<Comm> comms = new ArrayList<Comm>();
37 for (int i = 0; i < tasksCount; i++) {
38 Task task = new Task("Task_" + i, taskComputeSize, taskCommunicateSize);
39 Msg.info("Sending \"" + task.getName()+ "\" to \"slave_" + i % slavesCount + "\"");
40 Comm comm = task.isend("slave_"+(i%slavesCount));
44 while (comms.size() > 0) {
45 for (int i = 0; i < comms.size(); i++) {
47 if (comms.get(i).test()) {
58 Msg.info("All tasks have been dispatched. Let's tell (asynchronously) everybody the computation is over,"+
59 " and sleep 20s so that nobody gets a message from a terminated process.");
61 for (int i = 0; i < slavesCount; i++) {
62 FinalizeTask task = new FinalizeTask();
63 task.dsend("slave_"+(i%slavesCount));
67 Msg.info("Goodbye now!");