upstream/ipython Files · docs/examples/newparallel/multiengine2.py

don't use zmq.select due to bug in pyzmq 2.1.7...

don't use zmq.select due to bug in pyzmq 2.1.7 pyzmq's zmq.select timeout has the wrong units in 2.1.7, resulting in a timeout of 1 waiting for 1000s before raising. Use zmq.Poller instead, which doesn't have this bug.

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      #-------------------------------------------------------------------------------

      # Imports

      #-------------------------------------------------------------------------------

      import time

      from IPython.parallel import Client

      #-------------------------------------------------------------------------------

      # Setup

      #-------------------------------------------------------------------------------

      mux = Client()[:]

      mux.clear()

      mux.block=False

      ar1 = mux.apply(time.sleep, 5)

      ar2 = mux.push(dict(a=10,b=30,c=range(20000),d='The dog went swimming.'))

      ar3 = mux.pull(('a','b','d'), block=False)

      print "Try a non-blocking get_result"

      ar4 = mux.get_result()

      print "Now wait for all the results"

      mux.wait([ar1,ar2,ar3,ar4])

      print "The last pull got:", ar4.r

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				#-------------------------------------------------------------------------------
				# Imports
				#-------------------------------------------------------------------------------

				import time

				from IPython.parallel import Client

				#-------------------------------------------------------------------------------
				# Setup
				#-------------------------------------------------------------------------------

				mux = Client()[:]

				mux.clear()

				mux.block=False

				ar1 = mux.apply(time.sleep, 5)
				ar2 = mux.push(dict(a=10,b=30,c=range(20000),d='The dog went swimming.'))
				ar3 = mux.pull(('a','b','d'), block=False)

				print "Try a non-blocking get_result"
				ar4 = mux.get_result()

				print "Now wait for all the results"
				mux.wait([ar1,ar2,ar3,ar4])
				print "The last pull got:", ar4.r