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# Copyright (c) 2006-2025. 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.
from argparse import ArgumentParser
import sys
from simgrid import Engine, Task, ExecTask, IoTask, IoOpType
def parse():
parser = ArgumentParser()
parser.add_argument(
'--platform',
type=str,
required=True,
help='path to the platform description'
)
return parser.parse_args()
def callback(t):
print(f'[{Engine.clock}] {t} finished ({t.get_count()})')
if __name__ == '__main__':
args = parse()
e = Engine(sys.argv)
e.load_platform(args.platform)
# Retrieve hosts
bob = e.host_by_name('bob')
carl = e.host_by_name('carl')
# Create tasks
exec1 = ExecTask.init("exec1", 1e9, bob)
exec2 = ExecTask.init("exec2", 1e9, carl)
write = IoTask.init("write", 1e7, bob.disks[0], IoOpType.WRITE)
read = IoTask.init("read", 1e7, carl.disks[0], IoOpType.READ)
# Create the graph by defining dependencies between tasks
exec1.add_successor(write)
write.add_successor(read)
read.add_successor(exec2)
# Add a function to be called when tasks end for log purpose
Task.on_completion_cb(callback)
# Enqueue two firings for task exec1
exec1.enqueue_firings(2)
# runs the simulation
e.run()
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