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Merge pull request #1768 from minrk/parallelmagics...
Merge pull request #1768 from minrk/parallelmagics Update parallel magics They now display all output, so you can do parallel plotting or other actions with complex display. The `px` magic has now both line and cell modes, and in cell mode finer control has been added about how to collate output from multiple engines. Tests, docs and example notebook added.

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helloworld.ipynb
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Distributed hello world

Originally by Ken Kinder (ken at kenkinder dom com)

In [1]:
from IPython.parallel import Client
In [2]:
rc = Client()
view = rc.load_balanced_view()
In [3]:
def sleep_and_echo(t, msg):
    import time
    time.sleep(t)
    return msg
In [4]:
world = view.apply_async(sleep_and_echo, 3, 'World!')
hello = view.apply_async(sleep_and_echo, 2, 'Hello')
In [5]:
print "Submitted tasks:", hello.msg_ids, world.msg_ids
print hello.get(), world.get()
Submitted tasks: ['dd1052e0-aa75-4b25-9d35-ecbdaf6e3ed7'] ['1b46aa21-20d1-459c-bc36-2d8d03336f74']
Hello
 World!