[Numpy-discussion] ANN: PyCuda

Andreas Klöckner lists@informa.tiker....
Sun Jun 22 15:21:53 CDT 2008


On Sonntag 22 Juni 2008, Kevin Jacobs <jacobs@bioinformed.com> wrote:
> Thanks for the clarification.  That makes perfect sense.  Do you have any
> feelings on the relative performance of GPUArray versus CUBLAS?

Same. If you check out the past version of PyCuda that still has CUBLAS, there 
are files test/test_{cublas,gpuarray}_speed.py. In fact, since CUBLAS does 
not implement three-operand "z = x + y", it requires an extra copy that 
GPUArray can avoid. If you're into "lies, damned lies and benchmarks", you 
could say that GPUArray is actually twice as fast.  :)

> The first  part of install.rst still says: "This tutorial will walk you
> through the process of building PyUblas."

Oops. Thanks. Fixed.

Andreas
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