[IPython-User] can't activate IPython parallel magics

Johann Rohwer jr@sun.ac...
Mon Nov 22 14:01:57 CST 2010

I'm just starting out with parallel IPython and can get the cluster 
controller and engine launcher working. However, when trying to activate the 
IPython parallel magics from within an IPython session, I'm getting the 
following traceback (running from a fresh git install). Any ideas?

In [1]: from IPython.kernel import client 

/usr/local/src/ipython/IPython/kernel/client.py:48: DeprecationWarning: 
twisted.internet.error.PotentialZombieWarning was deprecated in Twisted 
10.0.0: There is no longer any potential for zombie process.
   from twisted.internet.error import PotentialZombieWarning
2010-11-22 21:47:33+0200 [-] Log opened.

In [2]: mec=client.MultiEngineClient()
2010-11-22 21:47:46+0200 [-] Connecting [0]
2010-11-22 21:47:46+0200 [Negotiation,client] Connected: 

In [3]: mec.activate()
AttributeError                            Traceback (most recent call last)
/home/jr/<ipython-input-3-f37cf28bb36c> in <module>()
----> 1 mec.activate()

/usr/local/src/ipython/IPython/kernel/multiengineclient.py in activate(self)
     273             print "The IPython parallel magics (%result, %px, 
%autopx) only work within IPython."
     274         else:
--> 275             pmagic = ip.get_component('parallel_magic')
     276             if pmagic is not None:
     277                 pmagic.active_multiengine_client = self

AttributeError: 'TerminalInteractiveShell' object has no attribute 

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