def load_platform():
"""
Create a simple 2-hosts platform */
________ __________
| Sender |===============| Receiver |
|________| Link1 |__________|
"""
zone = NetZone.create_full_zone("Zone1")
sender = zone.create_host("sender", 1).seal()
receiver = zone.create_host("receiver", 1).seal()
link = zone.create_split_duplex_link("link1", 1e6)
# setting same callbacks (could be different) for link UP/DOWN in split-duplex link
link.get_link_up().set_sharing_policy(
Link.SharingPolicy.NONLINEAR,
functools.partial(link_nonlinear, link.get_link_up()))
link.get_link_down().set_sharing_policy(
Link.SharingPolicy.NONLINEAR,
functools.partial(link_nonlinear, link.get_link_down()))
link.set_latency(10e-6).seal()
# create routes between nodes
zone.add_route(sender.get_netpoint(), receiver.get_netpoint(), None, None,
[LinkInRoute(link, LinkInRoute.Direction.UP)], True)
zone.seal()
# create actors Sender/Receiver
Actor.create("receiver", receiver, Receiver(9))
Actor.create("sender", sender, Sender(9))
def master():
this_actor.info("Start 1st sleeper")
actor = Actor.create("1st sleeper from master", Host.current(), sleeper)
this_actor.info("Join the 1st sleeper (timeout 2)")
actor.join(2)
this_actor.info("Start 2nd sleeper")
actor = Actor.create("2nd sleeper from master", Host.current(), sleeper)
this_actor.info("Join the 2nd sleeper (timeout 4)")
actor.join(4)
this_actor.info("Start 3rd sleeper")
actor = Actor.create("3rd sleeper from master", Host.current(), sleeper)
this_actor.info("Join the 3rd sleeper (timeout 2)")
actor.join(2)
this_actor.info("Start 4th sleeper")
actor = Actor.create("4th sleeper from master", Host.current(), sleeper)
this_actor.info("Waiting 4")
this_actor.sleep_for(4)
this_actor.info("Join the 4th sleeper after its end (timeout 1)")
actor.join(1)
this_actor.info("Goodbye now!")
this_actor.sleep_for(1)
this_actor.info("Goodbye now!")
def my_daemon():
"""The daemon, displaying a message every 3 seconds until all other processes stop"""
Actor.self().daemonize()
while True:
this_actor.info("Hello from the infinite loop")
this_actor.sleep_for(3.0)
this_actor.info(
"I will never reach that point: daemons are killed when regular processes are done"
)
def load_platform():
""" Create a simple 1-host platform """
zone = NetZone.create_empty_zone("Zone1")
runner_host = zone.create_host("runner", 1e6)
runner_host.set_sharing_policy(
Host.SharingPolicy.NONLINEAR,
functools.partial(cpu_nonlinear, runner_host))
runner_host.seal()
zone.seal()
# create actor runner
Actor.create("runner", runner_host, runner)
def monitor():
boivin = Host.by_name("Boivin")
jacquelin = Host.by_name("Jacquelin")
fafard = Host.by_name("Fafard")
actor = Actor.create("worker", fafard, worker, boivin, jacquelin)
this_actor.sleep_for(5)
this_actor.info("After 5 seconds, move the process to {:s}".format(
jacquelin.name))
actor.host = jacquelin
this_actor.sleep_until(15)
this_actor.info("At t=15, move the process to {:s} and resume it.".format(
fafard.name))
actor.host = fafard
actor.resume()
def dream_master():
"""The Dream master"""
this_actor.info("Let's create a lazy guy.") # Create a lazy_guy process
lazy = Actor.create("Lazy", this_actor.get_host(), lazy_guy)
this_actor.info("Let's wait a little bit...")
this_actor.sleep_for(10) # Wait for 10 seconds
this_actor.info("Let's wake the lazy guy up! >:) BOOOOOUUUHHH!!!!")
if lazy.is_suspended():
lazy.resume() # Then wake up the lazy_guy
else:
this_actor.error(
"I was thinking that the lazy guy would be suspended now")
this_actor.sleep_for(5) # Repeat two times:
this_actor.info("Suspend the lazy guy while he's sleeping...")
lazy.suspend() # Suspend the lazy_guy while he's asleep
this_actor.info("Let him finish his siesta.")
this_actor.sleep_for(10) # Wait for 10 seconds
this_actor.info("Wake up, lazy guy!")
lazy.resume() # Then wake up the lazy_guy again
this_actor.sleep_for(5)
this_actor.info("Suspend again the lazy guy while he's sleeping...")
lazy.suspend()
this_actor.info("This time, don't let him finish his siesta.")
this_actor.sleep_for(2)
this_actor.info("Wake up, lazy guy!")
lazy.resume()
this_actor.sleep_for(5)
this_actor.info(
"Give a 2 seconds break to the lazy guy while he's working...")
lazy.suspend()
this_actor.sleep_for(2)
this_actor.info("Back to work, lazy guy!")
lazy.resume()
this_actor.info("OK, I'm done here.")
def killer():
this_actor.info("Hello!") # - First start a victim process
victim_a = Actor.create("victim A", Host.by_name("Fafard"), victim_a_fun)
victim_b = Actor.create("victim B", Host.by_name("Jupiter"), victim_b_fun)
this_actor.sleep_for(10) # - Wait for 10 seconds
# - Resume it from its suspended state
this_actor.info("Resume the victim A")
victim_a.resume()
this_actor.sleep_for(2)
this_actor.info("Kill the victim A") # - and then kill it
Actor.by_pid(victim_a.pid).kill(
) # You can retrieve an actor from its PID (and then kill it)
this_actor.sleep_for(1)
# that's a no-op, there is no zombies in SimGrid
this_actor.info("Kill victim B, even if it's already dead")
victim_b.kill()
this_actor.sleep_for(1)
this_actor.info("Start a new actor, and kill it right away")
victim_c = Actor.create("victim C", Host.by_name("Jupiter"), victim_a_fun)
victim_c.kill()
this_actor.sleep_for(1)
this_actor.info("Killing everybody but myself")
Actor.kill_all()
this_actor.info("OK, goodbye now. I commit a suicide.")
this_actor.exit()
this_actor.info(
"This line never gets displayed: I'm already dead since the previous line."
)
this_actor.info("Join the 3rd sleeper (timeout 2)")
actor.join(2)
this_actor.info("Start 4th sleeper")
actor = Actor.create("4th sleeper from master", Host.current(), sleeper)
this_actor.info("Waiting 4")
this_actor.sleep_for(4)
this_actor.info("Join the 4th sleeper after its end (timeout 1)")
actor.join(1)
this_actor.info("Goodbye now!")
this_actor.sleep_for(1)
this_actor.info("Goodbye now!")
if __name__ == '__main__':
e = Engine(sys.argv)
if len(sys.argv) < 2:
raise AssertionError(
"Usage: actor-join.py platform_file [other parameters]")
e.load_platform(sys.argv[1])
Actor.create("master", Host.by_name("Tremblay"), master)
e.run()
this_actor.info("Simulation time {}".format(Engine.get_clock()))
this_actor.sleep_for(1)
this_actor.info("Start a new actor, and kill it right away")
victim_c = Actor.create("victim C", Host.by_name("Jupiter"), victim_a_fun)
victim_c.kill()
this_actor.sleep_for(1)
this_actor.info("Killing everybody but myself")
Actor.kill_all()
this_actor.info("OK, goodbye now. I commit a suicide.")
this_actor.exit()
this_actor.info(
"This line never gets displayed: I'm already dead since the previous line.")
if __name__ == '__main__':
e = Engine(sys.argv)
if len(sys.argv) < 2:
raise AssertionError(
"Usage: actor-kill.py platform_file [other parameters]")
e.load_platform(sys.argv[1]) # Load the platform description
# Create and deploy killer process, that will create the victim actors
Actor.create("killer", Host.by_name("Tremblay"), killer)
e.run()
if __name__ == '__main__':
# Here comes the main function of your program
# When your program starts, you have to first start a new simulation engine, as follows
e = Engine(sys.argv)
# Then you should load a platform file, describing your simulated platform
e.load_platform("../../platforms/small_platform.xml")
# And now you have to ask SimGrid to actually start your actors.
#
# The easiest way to do so is to implement the behavior of your actor in a single function,
# as we do here for the receiver actors. This function can take any kind of parameters, as
# long as the last parameters of Actor::create() match what your function expects.
Actor.create("receiver", Host.by_name("Fafard"), receiver, "mb42")
# If your actor is getting more complex, you probably want to implement it as a class instead,
# as we do here for the sender actors. The main behavior goes into operator()() of the class.
#
# You can then directly start your actor, as follows:
Actor.create("sender1", Host.by_name("Tremblay"), Sender())
# If you want to pass parameters to your class, that's very easy: just use your constructors
Actor.create("sender2", Host.by_name("Jupiter"), Sender("GloubiBoulga"))
# But starting actors directly is considered as a bad experimental habit, since it ties the code
# you want to test with the experimental scenario. Starting your actors from an external deployment
# file in XML ensures that you can test your code in several scenarios without changing the code itself.
#
# For that, you first need to register your function or your actor as follows.
e.register_actor("sender", Sender)
# execute() tells SimGrid to pause the calling actor until
# its host has computed the amount of flops passed as a parameter
this_actor.execute(98095)
this_actor.info("Done.")
# This simple example does not do anything beyond that
def privileged():
# You can also specify the priority of your execution as follows.
# An execution of priority 2 computes twice as fast as a regular one.
#
# So instead of a half/half sharing between the two executions,
# we get a 1/3 vs 2/3 sharing.
this_actor.execute(98095, priority=2)
this_actor.info("Done.")
# Note that the timings printed when executing this example are a bit misleading,
# because the uneven sharing only last until the privileged actor ends.
# After this point, the unprivileged one gets 100% of the CPU and finishes
# quite quickly.
if __name__ == '__main__':
e = Engine(sys.argv)
e.load_platform(sys.argv[1])
Actor.create("executor", Host.by_name("Tremblay"), executor)
Actor.create("privileged", Host.by_name("Tremblay"), privileged)
e.run()
this_actor.sleep_for(5)
this_actor.info("Suspend again the lazy guy while he's sleeping...")
lazy.suspend()
this_actor.info("This time, don't let him finish his siesta.")
this_actor.sleep_for(2)
this_actor.info("Wake up, lazy guy!")
lazy.resume()
this_actor.sleep_for(5)
this_actor.info(
"Give a 2 seconds break to the lazy guy while he's working...")
lazy.suspend()
this_actor.sleep_for(2)
this_actor.info("Back to work, lazy guy!")
lazy.resume()
this_actor.info("OK, I'm done here.")
if __name__ == '__main__':
e = Engine(sys.argv)
if len(sys.argv) < 2:
raise AssertionError(
"Usage: actor-suspend.py platform_file [other parameters]")
e.load_platform(sys.argv[1]) # Load the platform description
hosts = e.get_all_hosts()
Actor.create("dream_master", hosts[0], dream_master)
e.run() # Run the simulation
class Canceller:
"""This actor cancels the ongoing execution after a while."""
def __call__(self):
computation_amount = this_actor.get_host().speed
this_actor.info(
"Canceller executes {:.0f} flops, should take 1 second.".format(
computation_amount))
activity = this_actor.exec_init(computation_amount).start()
this_actor.sleep_for(0.5)
this_actor.info("I changed my mind, cancel!")
activity.cancel()
this_actor.info("Goodbye from canceller!")
if __name__ == '__main__':
e = Engine(sys.argv)
if len(sys.argv) < 2:
raise AssertionError(
"Usage: exec-async.py platform_file [other parameters]")
e.load_platform(sys.argv[1])
Actor.create("wait", Host.by_name("Fafard"), Waiter())
Actor.create("monitor", Host.by_name("Ginette"), Monitor())
Actor.create("cancel", Host.by_name("Boivin"), Canceller())
e.run()
def create_sata_disk(host: Host, disk_name: str):
""" Same for a SATA disk, only read operation follows a non-linear resource sharing """
disk = host.create_disk(disk_name, "68MBps", "50MBps")
disk.set_sharing_policy(Disk.Operation.READ, Disk.SharingPolicy.NONLINEAR,
functools.partial(sata_dynamic_sharing, disk))
# this is the default behavior, expliciting only to make it clearer
disk.set_sharing_policy(Disk.Operation.WRITE, Disk.SharingPolicy.LINEAR)
disk.set_sharing_policy(Disk.Operation.READWRITE,
Disk.SharingPolicy.LINEAR)
if __name__ == '__main__':
e = Engine(sys.argv)
# simple platform containing 1 host and 2 disk
zone = NetZone.create_full_zone("bob_zone")
bob = zone.create_host("bob", 1e6)
create_ssd_disk(bob, "Edel (SSD)")
create_sata_disk(bob, "Griffon (SATA II)")
zone.seal()
Actor.create("runner", bob, host)
e.run()
this_actor.info("Simulated time: %g" % Engine.get_clock())
# explicitly deleting Engine object to avoid segfault during cleanup phase.
# During Engine destruction, the cleanup of std::function linked to non_linear callback is called.
# If we let the cleanup by itself, it fails trying on its destruction because the python main program
# has already freed its variables
del (e)
activity.start()
this_actor.sleep_for(0.5)
this_actor.info(
"Loads before the move: Boivin={:.0f}; Fafard={:.0f}; Ginette={:.0f}".format(
boivin.load,
fafard.load,
ginette.load))
activity.host = boivin
this_actor.sleep_for(0.1)
this_actor.info(
"Loads after the move: Boivin={:.0f}; Fafard={:.0f}; Ginette={:.0f}".format(
boivin.load,
fafard.load,
ginette.load))
activity.wait()
this_actor.info("Done!")
if __name__ == '__main__':
e = Engine(sys.argv)
e.load_platform(sys.argv[1])
Actor.create("test", Host.by_name("Fafard"), Wizard())
e.run()
def monitor():
boivin = Host.by_name("Boivin")
jacquelin = Host.by_name("Jacquelin")
fafard = Host.by_name("Fafard")
actor = Actor.create("worker", fafard, worker, boivin, jacquelin)
this_actor.sleep_for(5)
this_actor.info("After 5 seconds, move the process to {:s}".format(
jacquelin.name))
actor.host = jacquelin
this_actor.sleep_until(15)
this_actor.info("At t=15, move the process to {:s} and resume it.".format(
fafard.name))
actor.host = fafard
actor.resume()
if __name__ == '__main__':
e = Engine(sys.argv)
if len(sys.argv) < 2:
raise AssertionError(
"Usage: actor-migration.py platform_file [other parameters]")
e.load_platform(sys.argv[1])
Actor.create("monitor", Host.by_name("Boivin"), monitor)
e.run()
this_actor.info("Let's do some work (for 10 sec on Boivin).")
this_actor.execute(980.95e6)
this_actor.info("I'm done now. I leave even if it makes the daemon die.")
def my_daemon():
"""The daemon, displaying a message every 3 seconds until all other processes stop"""
Actor.self().daemonize()
while True:
this_actor.info("Hello from the infinite loop")
this_actor.sleep_for(3.0)
this_actor.info(
"I will never reach that point: daemons are killed when regular processes are done"
)
if __name__ == '__main__':
e = Engine(sys.argv)
if len(sys.argv) < 2:
raise AssertionError(
"Usage: actor-daemon.py platform_file [other parameters]")
e.load_platform(sys.argv[1])
Actor.create("worker", Host.by_name("Boivin"), worker)
Actor.create("daemon", Host.by_name("Tremblay"), my_daemon)
e.run()
host.pstate = new_pstate
this_actor.info("Changed power peak={:f}".format(host.speed))
# Run a second task
this_actor.execute(workload)
task_time = Engine.get_clock() - task_time
this_actor.info("Task2 duration: {:.2f}".format(task_time))
# Verify that the default pstate is set to 0
host2 = Host.by_name("MyHost2")
this_actor.info("Count of Processor states={:d}".format(
host2.get_pstate_count()))
this_actor.info("Final power peak={:f}".format(host2.speed))
if __name__ == '__main__':
e = Engine(sys.argv)
if len(sys.argv) < 2:
raise AssertionError(
"Usage: exec-dvfs.py platform_file [other parameters] (got {:d} params)"
.format(len(sys.argv)))
e.load_platform(sys.argv[1])
Actor.create("dvfs_test", Host.by_name("MyHost1"), Dvfs())
Actor.create("dvfs_test", Host.by_name("MyHost2"), Dvfs())
e.run()
def load_platform():
""" Creates a mixed platform, using many methods available in the API
"""
root = NetZone.create_floyd_zone("root")
hosts = []
# dijkstra
dijkstra = NetZone.create_dijkstra_zone("dijkstra")
msg_base = "Creating zone: "
this_actor.info(msg_base + dijkstra.name)
dijkstra.set_parent(root)
host1 = dijkstra.create_host("host1", [1e9, 1e8]).set_core_count(2)
hosts.append(host1)
host1.create_disk("disk1", 1e5, 1e4).seal()
host1.create_disk("disk2", "1MBps", "1Mbps").seal()
host1.seal()
host2 = dijkstra.create_host("host2", ["1Gf", "1Mf"]).seal()
hosts.append(host2)
link1 = dijkstra.create_link(
"link1_up", [1e9]).set_latency(1e-3).set_concurrency_limit(10).seal()
link2 = dijkstra.create_link("link1_down",
["1GBps"]).set_latency("1ms").seal()
dijkstra.add_route(host1.get_netpoint(), host2.get_netpoint(), None, None,
[LinkInRoute(link1)], False)
dijkstra.add_route(host2.get_netpoint(), host1.get_netpoint(), None, None,
[LinkInRoute(link2)], False)
dijkstra.seal()
# vivaldi
vivaldi = NetZone.create_vivaldi_zone("vivaldi")
this_actor.info(msg_base + vivaldi.name)
vivaldi.set_parent(root)
host3 = vivaldi.create_host("host3", 1e9).set_coordinates("1 1 1").seal()
host4 = vivaldi.create_host("host4", "1Gf").set_coordinates("2 2 2").seal()
hosts.append(host3)
hosts.append(host4)
# empty
empty = NetZone.create_empty_zone("empty")
this_actor.info(msg_base + empty.name)
empty.set_parent(root)
host5 = empty.create_host("host5", 1e9)
hosts.append(host5)
empty.seal()
# wifi
wifi = NetZone.create_wifi_zone("wifi")
this_actor.info(msg_base + wifi.name)
wifi.set_parent(root)
router = wifi.create_router("wifi_router")
wifi.set_property("access_point", "wifi_router")
host6 = wifi.create_host("host6", ["100.0Mf", "50.0Mf", "20.0Mf"]).seal()
hosts.append(host6)
wifi_link = wifi.create_link("AP1", ["54Mbps", "36Mbps", "24Mbps"]).seal()
wifi_link.set_host_wifi_rate(host6, 1)
wifi.seal()
# create routes between netzones
link_a = vivaldi.create_link("linkA", 1e9).seal()
link_b = vivaldi.create_link("linkB", "1GBps").seal()
link_c = vivaldi.create_link("linkC", "1GBps").seal()
root.add_route(dijkstra.get_netpoint(), vivaldi.get_netpoint(),
host1.get_netpoint(), host3.get_netpoint(),
[LinkInRoute(link_a)], True)
root.add_route(vivaldi.get_netpoint(), empty.get_netpoint(),
host3.get_netpoint(), host5.get_netpoint(),
[LinkInRoute(link_b)], True)
root.add_route(empty.get_netpoint(), wifi.get_netpoint(),
host5.get_netpoint(), router, [LinkInRoute(link_c)], True)
# create actors Sender/Receiver
Actor.create("sender", hosts[0], Sender(hosts))
for host in hosts:
Actor.create("receiver", host, Receiver())