On Sat, 19 Feb 2011 02:01:52 -0800, Christoph Gohlke <cgoh...@uci.edu> wrote:
>
>
> On 2/17/2011 5:39 AM, Andreas Kloeckner wrote:
> > On Thu, 17 Feb 2011 01:25:25 -0800, Christoph Gohlke<cgoh...@uci.edu>
> > wrote:
> >> 4) Delete the CUDA cache directory. I found this necessary sometimes
> >> when switching between 32 and 64 bit CUDA.
> >
> > That's a bug. I've added system bitness (in the form of sys.maxint) to
> > the hash key for the cache. Shouldn't be necessary any more.
>
> Sys.maxint will not work on Windows. It is 2147483647 on 32 and 64 bit
> Windows.
>
> How about using `struct.calcsize("P")` or `platform.architecture()[0]`
> to differentiate between 32 and 64 bit platforms?Ok, should be fixed by using (new) pycuda.characterize.platform_bits(), which uses tuple.__itemsize__. Thanks, Andreas
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