1 /* Copyright (c) 2012-2023. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 package cloud.masterworker;
8 import org.simgrid.msg.Host;
9 import org.simgrid.msg.Msg;
10 import org.simgrid.msg.MsgException;
11 import org.simgrid.msg.Process;
12 import org.simgrid.msg.Task;
13 import org.simgrid.msg.VM;
15 public class Master extends Process {
18 public Master(Host host, String name, Host[] hosts) {
19 super(host,name,null);
23 public void main(String[] args) throws MsgException {
24 int workersCount = Main.NHOSTS;
26 for (int step = 1; step <= Main.NSTEPS ; step++) {
27 // Create one VM per host and bind a process inside each one.
28 for (int i = 0; i < workersCount; i++) {
29 Msg.verb("create VM0-s"+step+"-"+i);
30 VM vm = new VM(hosts[i+1],"VM0-s"+step+"-"+i);
32 Worker worker= new Worker(vm,"WK:"+step+":"+ i);
33 Msg.verb("Put Worker "+worker.getName()+ " on "+vm.getName());
38 Msg.info("Launched " + vms.length + " VMs");
40 Msg.info("Send some work to everyone");
41 workBatch(workersCount,"WK:"+step+":");
43 Msg.info("Suspend all VMs, wait a while, resume them, migrate them and shut them down.");
45 Msg.verb("Suspend "+vm.getName());
49 Msg.verb("Wait a while, and resume all VMs.");
55 Msg.verb("Sleep long enough for everyone to be done with previous batch of work");
56 waitFor(1000*step - Msg.getClock());
58 Msg.verb("Migrate everyone to "+hosts[3].getName());
60 Msg.verb("Migrate "+vm.getName()+" to "+hosts[3].getName());
64 Msg.verb("Let's kill everyone.");
68 Msg.info("XXXXXXXXXXXXXXX Step "+step+" done.");
72 public void workBatch(int workersCount, String nameRoot) throws MsgException {
73 for (int i = 0; i < workersCount; i++) {
74 Task task = new Task("Task "+nameRoot + i, Main.TASK_COMP_SIZE, Main.TASK_COMM_SIZE);
75 Msg.verb("Sending to "+ nameRoot + i);
76 task.send(nameRoot + i);