Yes... It was Nvidia's bug not mine...
On May 16, 2012 4:45 AM, "Jan-Philip Gehrcke" <jgehrcke.googlemail.com>
wrote:
> Huhu,
>
> as Ross pointed out before, there is a performance regression in CUDA
> 4.1 compilers (cf. mail below). On the NVIDIA website, in the meanwhile,
> CUDA Toolkit & SDK are available in version 4.2.9:
> http://developer.nvidia.com/cuda-downloads
>
> Unfortunately, I cannot find a changelog. Does anyone know for sure if
> the discussed issue was resolved with this 4.2.9 release?
>
> Thanks,
>
> Jan-Philip
>
>
>
> > Hi Ashraf,
> >
> > You can use CUDA 4.1 but it is approximately 10 to 15% slower than if you
> > used 4.0 due to performance regression bugs within the 4.1 compiler. Our
> > advice at present is to use the CUDA 4.0 compilers until such a time as
> the
> > compiler bug is fixed. Hopefully this will be with the release of the 4.2
> > compiler.
> >
> > All the best
> > Ross
>
>
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Received on Wed May 16 2012 - 09:30:04 PDT
