Traceback (most recent call last):
  File "./caller.py", line 10, in <module>
    main()
  File "./caller.py", line 8, in main
    print mec.map(rfcn, [1,1])
  File "//usr/lib64/python2.5/site-packages/IPython/kernel/multiengineclient.py", line 813, in map
    return self.mapper().map(func, *sequences)
  File "//usr/lib64/python2.5/site-packages/IPython/kernel/mapper.py", line 124, in map
    targets=self.targets, block=self.block)
  File "//usr/lib64/python2.5/site-packages/IPython/kernel/multiengineclient.py", line 800, in raw_map
    dist, targets=targets, block=block)
  File "//usr/lib64/python2.5/site-packages/IPython/kernel/multiengineclient.py", line 441, in _blockFromThread
    result = blockingCallFromThread(function, *args, **kwargs)
  File "//usr/lib64/python2.5/site-packages/IPython/kernel/twistedutil.py", line 69, in blockingCallFromThread
    return twisted.internet.threads.blockingCallFromThread(reactor, f, *a, **kw)
  File "//usr/lib64/python2.5/site-packages/twisted/internet/threads.py", line 83, in blockingCallFromThread
    result.raiseException()
  File "//usr/lib64/python2.5/site-packages/twisted/python/failure.py", line 319, in raiseException
    raise self.type, self.value, self.tb
IPython.kernel.error.CompositeError: one or more exceptions from call to method: execute
[0:execute]: NameError: global name 'random' is not defined
[1:execute]: NameError: global name 'random' is not defined