1 # Copyright (c) 2010-2022. The SimGrid Team. 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.
7 from simgrid import Actor, Engine, Host, Mailbox, this_actor
10 # This example shows how to use simgrid::s4u::this_actor::wait() to wait for a given communication.
12 # As for the other asynchronous examples, the sender initiate all the messages it wants to send and
13 # pack the resulting simgrid::s4u::CommPtr objects in a vector. All messages thus occurs concurrently.
15 # The sender then loops until there is no ongoing communication.
18 def sender(messages_count, msg_size, receivers_count):
19 # List in which we store all ongoing communications
22 # Vector of the used mailboxes
23 mboxes = [Mailbox.by_name("receiver-{:d}".format(i)) for i in range(0, receivers_count)]
25 # Start dispatching all messages to receivers, in a round robin fashion
26 for i in range(0, messages_count):
27 content = "Message {:d}".format(i)
28 mbox = mboxes[i % receivers_count]
30 this_actor.info("Send '{:s}' to '{:s}'".format(content, str(mbox)))
32 # Create a communication representing the ongoing communication, and store it in pending_comms
33 comm = mbox.put_async(content, msg_size)
34 pending_comms.append(comm)
36 # Start sending messages to let the workers know that they should stop
37 for i in range(0, receivers_count):
39 this_actor.info("Send 'finalize' to '{:s}'".format(str(mbox)))
40 comm = mbox.put_async("finalize", 0)
41 pending_comms.append(comm)
43 this_actor.info("Done dispatching all messages")
45 # Now that all message exchanges were initiated, wait for their completion, in order of creation.
46 for comm in pending_comms:
48 this_actor.info("Goodbye now!")
51 mbox = Mailbox.by_name("receiver-{:d}".format(id))
52 this_actor.info("Wait for my first message")
55 this_actor.info("I got a '{:s}'.".format(received))
56 if received == "finalize":
57 break # If it's a finalize message, we're done.
60 if __name__ == '__main__':
63 e.load_platform(sys.argv[1]) # Load the platform description
65 Actor.create("sender", Host.by_name("Tremblay"), sender, 3, 50000000, 1)
66 Actor.create("receiver", Host.by_name("Ruby"), receiver, 0)