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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.*;
public class dag_io {
public static void main(String[] args)
{
Engine e = new Engine(args);
e.load_platform(args[0]);
var bob = e.host_by_name("bob");
var carl = e.host_by_name("carl");
// Display the details on vetoed activities
Exec.on_veto_cb(new CallbackExec() {
@Override public void run(Exec exec)
{
Engine.info("Exec '%s' vetoed. Dependencies: %s; Ressources: %s", exec.get_name(),
(exec.dependencies_solved() ? "solved" : "NOT solved"),
(exec.is_assigned() ? "assigned" : "NOT assigned"));
}
});
Io.on_veto_cb(new CallbackIo() {
public void run(Io io)
{
Engine.info("Io '%s' vetoed. Dependencies: %s; Ressources: %s", io.get_name(),
(io.dependencies_solved() ? "solved" : "NOT solved"),
(io.is_assigned() ? "assigned" : "NOT assigned"));
}
});
Exec.on_completion_cb(new CallbackExec() {
public void run(Exec exec)
{
Engine.info("Exec '%s' is complete (start time: %f, finish time: %f)", exec.get_name(), exec.get_start_time(),
exec.get_finish_time());
}
});
// Create a small DAG: parent.write_output.read_input.child
Exec parent = Exec.init();
Io write_output = Io.init();
Io read_input = Io.init();
Exec child = Exec.init();
parent.add_successor(write_output);
write_output.add_successor(read_input);
read_input.add_successor(child);
// Set the parameters (the name is for logging purposes only)
// + parent and chile end after 1 second
parent.set_name("parent").set_flops_amount(bob.get_speed());
write_output.set_name("write").set_size(1e9).set_op_type(Io.OpType.WRITE);
read_input.set_name("read").set_size(1e9).set_op_type(Io.OpType.READ);
child.set_name("child").set_flops_amount(carl.get_speed());
// Schedule and try to start the different activities
parent.set_host(bob).start();
write_output.set_disk(bob.get_disks()[0]).start();
read_input.set_disk(carl.get_disks()[0]).start();
child.set_host(carl).start();
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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