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 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)
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 __call__(self):
fafard = Host.by_name("Fafard")
ginette = Host.by_name("Ginette")
boivin = Host.by_name("Boivin")
this_actor.info(
"I'm a wizard! I can run a task on the Ginette host from the Fafard one! Look!"
)
activity = this_actor.exec_init(48.492e6)
activity.host = ginette
activity.start()
this_actor.info(
"It started. Running 48.492Mf takes exactly one second on Ginette (but not on Fafard)."
)
this_actor.sleep_for(0.1)
this_actor.info(
"Loads in flops/s: Boivin={:.0f}; Fafard={:.0f}; Ginette={:.0f}".
format(boivin.load, fafard.load, ginette.load))
activity.wait()
this_actor.info("Done!")
this_actor.info(
"And now, harder. Start a remote task on Ginette and move it to Boivin after 0.5 sec"
)
activity = this_actor.exec_init(73293500)
activity.host = ginette
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!")
def __call__(self):
this_actor.execute(1e9)
for disk in Host.current().get_disks():
this_actor.info("Using disk " + disk.name)
disk.read(10000)
disk.write(10000)
mbox = Mailbox.by_name(this_actor.get_host().name)
msg = mbox.get()
this_actor.info("I got '%s'." % msg)
this_actor.info("Finished executing. Goodbye!")
def create_ssd_disk(host: Host, disk_name: str):
""" Creates an SSD disk, setting the appropriate callback for non-linear resource sharing """
disk = host.create_disk(disk_name, "240MBps", "170MBps")
disk.set_sharing_policy(
Disk.Operation.READ, Disk.SharingPolicy.NONLINEAR,
functools.partial(ssd_dynamic_sharing, disk, "read"))
disk.set_sharing_policy(
Disk.Operation.WRITE, Disk.SharingPolicy.NONLINEAR,
functools.partial(ssd_dynamic_sharing, disk, "write"))
disk.set_sharing_policy(Disk.Operation.READWRITE,
Disk.SharingPolicy.LINEAR)
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."
)
def __call__(self):
workload = 100E6
host = this_actor.get_host()
nb = host.get_pstate_count()
this_actor.info("Count of Processor states={:d}".format(nb))
this_actor.info("Current power peak={:f}".format(host.speed))
# Run a task
this_actor.execute(workload)
task_time = Engine.get_clock()
this_actor.info("Task1 duration: {:.2f}".format(task_time))
# Change power peak
new_pstate = 2
this_actor.info(
"Changing power peak value to {:f} (at index {:d})".format(
host.get_pstate_speed(new_pstate), new_pstate))
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))
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()
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)
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()
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()
def host():
# Estimating bw for each disk and considering concurrent flows
for n in range(1, 15, 2):
for disk in Host.current().get_disks():
estimate_bw(disk, n, True)
estimate_bw(disk, n, False)
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()
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()
# 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()
