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

don't allow gethostbyname(gethostname()) failure to crash ipcontroller...

don't allow gethostbyname(gethostname()) failure to crash ipcontroller In some weird situations, socket.gethostbyname_ex(socket.gethostname()) can fail. Don't let this error raise, instead assume localhost and warn in these cases.

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      """

      A Distributed Hello world

      Ken Kinder <ken@kenkinder.com>

      """

      from IPython.parallel import Client

      rc = Client()

      def sleep_and_echo(t, msg):

          import time

          time.sleep(t)

          return msg

      view = rc.load_balanced_view()

      world = view.apply_async(sleep_and_echo, 3, 'World!')

      hello = view.apply_async(sleep_and_echo, 2, 'Hello')

      print "Submitted tasks:", hello.msg_ids, world.msg_ids

      print hello.get(), world.get()

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				"""
				A Distributed Hello world
				Ken Kinder <ken@kenkinder.com>
				"""
				from IPython.parallel import Client

				rc = Client()

				def sleep_and_echo(t, msg):
				import time
				time.sleep(t)
				return msg

				view = rc.load_balanced_view()

				world = view.apply_async(sleep_and_echo, 3, 'World!')
				hello = view.apply_async(sleep_and_echo, 2, 'Hello')
				print "Submitted tasks:", hello.msg_ids, world.msg_ids
				print hello.get(), world.get()