1 # Copyright (c) 2017-2019. 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 # This example demonstrate the actor migrations.
8 # The worker actor first move by itself, and then start an execution.
9 # During that execution, the monitor migrates the worker, that wakes up on another host.
10 # The execution was of the right amount of flops to take exactly 5 seconds on the first host
11 # and 5 other seconds on the second one, so it stops after 10 seconds.
13 # Then another migration is done by the monitor while the worker is suspended.
15 # Note that worker() takes an uncommon set of parameters,
16 # and that this is perfectly accepted by create().
18 from simgrid import Actor, Engine, Host, this_actor
22 def worker(first_host, second_host):
23 flop_amount = first_host.speed * 5 + second_host.speed * 5
25 this_actor.info("Let's move to {:s} to execute {:.2f} Mflops (5sec on {:s} and 5sec on {:s})".format(
26 first_host.name, flop_amount / 1e6, first_host.name, second_host.name))
28 this_actor.set_host(first_host)
29 this_actor.execute(flop_amount)
31 this_actor.info("I wake up on {:s}. Let's suspend a bit".format(
32 this_actor.get_host().name))
36 this_actor.info("I wake up on {:s}".format(this_actor.get_host().name))
37 this_actor.info("Done")
41 boivin = Host.by_name("Boivin")
42 jacquelin = Host.by_name("Jacquelin")
43 fafard = Host.by_name("Fafard")
45 actor = Actor.create("worker", fafard, worker, boivin, jacquelin)
47 this_actor.sleep_for(5)
50 "After 5 seconds, move the process to {:s}".format(jacquelin.name))
51 actor.host = jacquelin
53 this_actor.sleep_until(15)
55 "At t=15, move the process to {:s} and resume it.".format(fafard.name))
60 if __name__ == '__main__':
64 "Usage: actor-migration.py platform_file [other parameters]")
65 e.load_platform(sys.argv[1])
67 Actor.create("monitor", Host.by_name("Boivin"), monitor)