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Merge pull request #1369 from minrk/EngineError...
Merge pull request #1369 from minrk/EngineError load header with engine id when engine dies in TaskScheduler This ensures that the metadata dict on the Client has the engine_uuid of the engine on which the task failed. Previously, this entry would remain empty. It is identical to code elsewhere (Hub, Client) for constructing the dummy reply when engines die.

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taskmap.ipynb
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Load balanced map and parallel function decorator

In [1]:
from IPython.parallel import Client
In [3]:
rc = Client()
v = rc.load_balanced_view()
In [4]:
result = v.map(lambda x: 2*x, range(10))
print "Simple, default map: ", list(result)
Simple, default map:  
[0, 2, 4, 6, 8, 10, 12, 14, 16, 18]
In [5]:
ar = v.map_async(lambda x: 2*x, range(10))
print "Submitted tasks, got ids: ", ar.msg_ids
result = ar.get()
print "Using a mapper: ", result
Submitted tasks, got ids:  ['5100a4c7-73a4-4832-aa91-e774f6f3ede8', 'd0cae1cf-2b32-4092-9eb7-f17b43fb3849', 'e08d3ee2-f221-47fe-9556-ed938e692030', '065585e4-cdf9-4240-a5fe-e44b2ae5d023', 'd2162f23-68e5-4318-ba1e-e34fd03a72ac', '5b3b835f-2099-4a70-9896-d1aa810c77e6', 'e2c2a823-bd44-4f91-8db3-c154d0d86e56', '991e0c25-f98a-44b5-9d9e-889d4180b9a5', '4ad41221-28bd-482f-a300-97c404648161', '5b730eb3-e0bb-4cdd-b228-c3b8d158828a']
Using a mapper:  [0, 2, 4, 6, 8, 10, 12, 14, 16, 18]
In [6]:
@v.parallel(block=True)
def f(x): return 2*x

result = f.map(range(10))
print "Using a parallel function: ", result
Using a parallel function:  [0, 2, 4, 6, 8, 10, 12, 14, 16, 18]