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/* Copyright (c) 2007-2025. 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. */
import org.simgrid.s4u.*;
class ComputationWorker extends Actor {
public void run()
{
double clockStart = Engine.get_clock();
this.execute(1000000);
double clockEnd = Engine.get_clock();
Engine.info("%s:%s executed %g", this.get_host().get_name(), this.get_name(), clockEnd - clockStart);
}
}
class Payload {
public final Host txHost;
public final String txActorName;
public final double clockStart;
Payload(Host h, String n)
{
txHost = h;
txActorName = n;
clockStart = Engine.get_clock();
}
}
class CommunicationTX extends Actor {
String mboxName;
CommunicationTX(String mboxName) { this.mboxName = mboxName; }
public void run()
{
Mailbox mbox = this.get_engine().mailbox_by_name(mboxName);
Payload payload = new Payload(this.get_host(), Actor.self().get_name());
mbox.put(payload, 1000000);
}
}
class CommunicationRX extends Actor {
String mboxName;
CommunicationRX(String mboxName) { this.mboxName = mboxName; }
public void run() throws SimgridException
{
String actor_name = Actor.self().get_name();
String host_name = this.get_host().get_name();
Mailbox mbox = this.get_engine().mailbox_by_name(mboxName);
Payload payload = (Payload)mbox.get();
double clock_end = Engine.get_clock();
Engine.info("%s:%s to %s:%s => %g sec", payload.txHost.get_name(), payload.txActorName, host_name, actor_name,
clock_end - payload.clockStart);
}
}
class Main extends Actor {
void launch_communication_worker(Host tx_host, Host rx_host)
{
String mbox_name = "MBOX:" + tx_host.get_name() + "-" + rx_host.get_name();
tx_host.add_actor("comm_tx", new CommunicationTX(mbox_name));
rx_host.add_actor("comm_rx", new CommunicationRX(mbox_name));
}
public void run()
{
Engine e = this.get_engine();
Host pm0 = e.host_by_name("Fafard");
Host pm1 = e.host_by_name("Tremblay");
Host pm2 = e.host_by_name("Bourassa");
Engine.info("## Test 1 (started): check computation on normal PMs");
Engine.info("### Put an activity on a PM");
pm0.add_actor("compute", new ComputationWorker());
this.sleep_for(2);
Engine.info("### Put two activities on a PM");
pm0.add_actor("compute", new ComputationWorker());
pm0.add_actor("compute", new ComputationWorker());
this.sleep_for(2);
Engine.info("### Put an activity on each PM");
pm0.add_actor("compute", new ComputationWorker());
pm1.add_actor("compute", new ComputationWorker());
this.sleep_for(2);
Engine.info("## Test 1 (ended)");
Engine.info("## Test 2 (started): check impact of running an activity inside a VM (there is no degradation for "
+ "the moment)");
Engine.info("### Put a VM on a PM, and put an activity to the VM");
VirtualMachine vm0 = pm0.create_vm("VM0", 1);
vm0.start();
vm0.add_actor("compute", new ComputationWorker());
this.sleep_for(2);
vm0.destroy();
Engine.info("## Test 2 (ended)");
Engine.info(
"## Test 3 (started): check impact of running an activity collocated with a VM (there is no VM noise for "
+ "the moment)");
Engine.info("### Put a VM on a PM, and put an activity to the PM");
vm0 = pm0.create_vm("VM0", 1);
vm0.start();
pm0.add_actor("compute", new ComputationWorker());
this.sleep_for(2);
vm0.destroy();
Engine.info("## Test 3 (ended)");
Engine.info(
"## Test 4 (started): compare the cost of running two activities inside two different VMs collocated or not "
+
"(for the moment, there is no degradation for the VMs. Hence, the time should be equals to the time of test 1");
Engine.info("### Put two VMs on a PM, and put an activity to each VM");
vm0 = pm0.create_vm("VM0", 1);
vm0.start();
VirtualMachine vm1 = pm0.create_vm("VM1", 1);
vm0.add_actor("compute", new ComputationWorker());
vm1.add_actor("compute", new ComputationWorker());
this.sleep_for(2);
vm0.destroy();
vm1.destroy();
Engine.info("### Put a VM on each PM, and put an activity to each VM");
vm0 = pm0.create_vm("VM0", 1);
vm1 = pm1.create_vm("VM1", 1);
vm0.start();
vm1.start();
vm0.add_actor("compute", new ComputationWorker());
vm1.add_actor("compute", new ComputationWorker());
this.sleep_for(2);
vm0.destroy();
vm1.destroy();
Engine.info("## Test 4 (ended)");
Engine.info("## Test 5 (started): Analyse network impact");
Engine.info("### Make a connection between PM0 and PM1");
launch_communication_worker(pm0, pm1);
this.sleep_for(5);
Engine.info("### Make two connection between PM0 and PM1");
launch_communication_worker(pm0, pm1);
launch_communication_worker(pm0, pm1);
this.sleep_for(5);
Engine.info("### Make a connection between PM0 and VM0@PM0");
vm0 = pm0.create_vm("VM0", 1);
vm0.start();
launch_communication_worker(pm0, vm0);
this.sleep_for(5);
vm0.destroy();
Engine.info("### Make a connection between PM0 and VM0@PM1");
vm0 = pm1.create_vm("VM0", 1);
launch_communication_worker(pm0, vm0);
this.sleep_for(5);
vm0.destroy();
Engine.info("### Make two connections between PM0 and VM0@PM1");
vm0 = pm1.create_vm("VM0", 1);
vm0.start();
launch_communication_worker(pm0, vm0);
launch_communication_worker(pm0, vm0);
this.sleep_for(5);
vm0.destroy();
Engine.info("### Make a connection between PM0 and VM0@PM1, and also make a connection between PM0 and PM1");
vm0 = pm1.create_vm("VM0", 1);
vm0.start();
launch_communication_worker(pm0, vm0);
launch_communication_worker(pm0, pm1);
this.sleep_for(5);
vm0.destroy();
Engine.info(
"### Make a connection between VM0@PM0 and PM1@PM1, and also make a connection between VM0@PM0 and VM1@PM1");
vm0 = pm0.create_vm("VM0", 1);
vm1 = pm1.create_vm("VM1", 1);
vm0.start();
vm1.start();
launch_communication_worker(vm0, vm1);
launch_communication_worker(vm0, vm1);
this.sleep_for(5);
vm0.destroy();
vm1.destroy();
Engine.info("## Test 5 (ended)");
Engine.info(
"## Test 6 (started): Check migration impact (not yet implemented neither on the CPU resource nor on the"
+ " network one)");
Engine.info("### Relocate VM0 between PM0 and PM1");
vm0 = pm0.create_vm("VM0", 1);
vm0.set_ramsize(1024 * 1024 * 1024).start(); // 1GiB
launch_communication_worker(vm0, pm2);
this.sleep_for(0.01);
vm0.migrate(pm1);
this.sleep_for(0.01);
vm0.migrate(pm0);
this.sleep_for(5);
vm0.destroy();
Engine.info("## Test 6 (ended)");
}
}
public class cloud_simple {
public static void main(String[] args)
{
Engine e = new Engine(args);
e.plugin_vm_live_migration_init();
e.load_platform(args[0]);
e.host_by_name("Fafard").add_actor("main", new Main());
e.run();
Engine.info("Simulation ends.");
// The following call is useless in your code, but our continuous integration uses it to track memleaks
e.force_garbage_collection();
}
}
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