>>> import pycuda.autoinit
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pycuda/autoinit.py", line 5, in <module>
    cuda.init()
pycuda._driver.LogicError: cuInit failed: