I'm trying to allocate a 3D cudaArray in PyCUDA, then pass the pointer to
this array through Cython.  T

This is easy to do with 'regular' memory on the device via the GPUarray
class;  I can just cast GPUarray.gpudata to long and then pass through
Cython.

Is there a way to do something similar with a pycuda.driver.Array?  I don't
see a way to get to the device pointer.

Thanks,
Luke
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