+++ /dev/null
-# Copyright (c) 2010-2020. 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.
-
-from simgrid import Comm, Engine, Mailbox, this_actor
-import sys
-
-# This example shows how to block on the completion of a set of communications.
-#
-# As for the other asynchronous examples, the sender initiate all the messages it wants to send and
-# pack the resulting simgrid.Comm objects in a list. All messages thus occur concurrently.
-#
-# The sender then loops until there is no ongoing communication. Using wait_any() ensures that the sender
-# will notice events as soon as they occur even if it does not follow the order of the container.
-#
-# Here, finalize messages will terminate earlier because their size is 0, so they travel faster than the
-# other messages of this application. As expected, the trace shows that the finalize of worker 1 is
-# processed before 'Message 5' that is sent to worker 0.
-
-
-class Sender:
- def __init__(self, *args):
- if len(args) != 3:
- raise AssertionError("Actor sender requires 3 parameters, but got {:d}".format(len(args)))
- self.messages_count = int(args[0]) # number of tasks
- self.msg_size = int(args[1]) # communication cost (in bytes)
- self.receivers_count = int(args[2]) # number of receivers
-
- def __call__(self):
- # List in which we store all ongoing communications
- pending_comms = []
-
- # Vector of the used mailboxes
- mboxes = [Mailbox.by_name("receiver-{:d}".format(i))
- for i in range(0, self.receivers_count)]
-
- # Start dispatching all messages to receivers, in a round robin fashion
- for i in range(0, self.messages_count):
- content = "Message {:d}".format(i)
- mbox = mboxes[i % self.receivers_count]
-
- this_actor.info("Send '{:s}' to '{:s}'".format(content, str(mbox)))
-
- # Create a communication representing the ongoing communication, and store it in pending_comms
- comm = mbox.put_async(content, self.msg_size)
- pending_comms.append(comm)
-
- # Start sending messages to let the workers know that they should stop
- for i in range(0, self.receivers_count):
- mbox = mboxes[i]
- this_actor.info("Send 'finalize' to '{:s}'".format(str(mbox)))
- comm = mbox.put_async("finalize", 0)
- pending_comms.append(comm)
-
- this_actor.info("Done dispatching all messages")
-
- # Now that all message exchanges were initiated, wait for their completion, in order of completion.
- #
- # This loop waits for first terminating message with wait_any() and remove it with del, until all comms are
- # terminated.
- # Even in this simple example, the pending comms do not terminate in the exact same order of creation.
- while pending_comms:
- changed_pos = Comm.wait_any(pending_comms)
- del pending_comms[changed_pos]
- if (changed_pos != 0):
- this_actor.info(
- "Remove the {:d}th pending comm: it terminated earlier than another comm that was initiated first.".format(changed_pos))
-
- this_actor.info("Goodbye now!")
-
-
-class Receiver:
- def __init__(self, *args):
- if len(args) != 1: # Receiver actor expects 1 argument: its ID
- raise AssertionError(
- "Actor receiver requires 1 parameter, but got {:d}".format(len(args)))
- self.mbox = Mailbox.by_name("receiver-{:s}".format(args[0]))
-
- def __call__(self):
- this_actor.info("Wait for my first message")
- while True:
- received = self.mbox.get()
- this_actor.info("I got a '{:s}'.".format(received))
- if received == "finalize":
- break # If it's a finalize message, we're done.
-
-
-if __name__ == '__main__':
- e = Engine(sys.argv)
-
- # Load the platform description
- e.load_platform(sys.argv[1])
-
- # Register the classes representing the actors
- e.register_actor("sender", Sender)
- e.register_actor("receiver", Receiver)
-
- e.load_deployment(sys.argv[2])
-
- e.run()
