[PyCUDA] FFT code gets error only when Python exit

[Ying Wai (Daniel) Fan]

Hi,

No long ago I have posted on this mailing list my wrapper of CUFFT in 
ctypes. The wrapper works fine with GPUArray with no problem and gives 
the correct output. But whenever I exit Python, I've got the following 
error message:

PyCUDA WARNING: a clean-up operation failed (dead context maybe?)
cuCtxDestroy failed: invalid value

I have attached a minimal example leading to this error. Basically, I 
just initialize PyCUDA, create a CUFFT plan, then destroy the plan and 
exit. Does anyone knows how to get rid of that error message, or is it 
ok to ignore this error?

Daniel
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