[petsc-dev] Backend independent VecGetArray for GPUs

[Matthew Knepley]

On Mon, Oct 27, 2014 at 7:48 AM, Lisandro Dalcin <dalcinl at gmail.com> wrote:

> On 27 October 2014 15:06, Matthew Knepley <knepley at gmail.com> wrote:
> > On Mon, Oct 27, 2014 at 6:30 AM, Lisandro Dalcin <dalcinl at gmail.com>
> wrote:
> >>
> >> On 27 October 2014 13:49, Lisandro Dalcin <dalcinl at gmail.com> wrote:
> >> > 1) petsc4py will provide a method Vec.getCUDAAddress() that will
> >> > return a plain Python integer (and a corresponding
> >> > restoreCUDAAddress()). Any other name to suggest? Using "CUDAArray"
> >> > would be a bit misleading in Python land.
> >>
> >> Perhaps "getCUDAHandle()" is better? Please help me to decide, I'm
> >> really bad at naming things.
> >
> >
> > I like handle. That is the traditional name.
> >
>
> Thanks! Take a look at branch dalcinl/cuda-handle
>
> https://bitbucket.org/petsc/petsc4py/src/cec7da13bbb407a1b376f8e6b46b1ef31ca6e9b3/?at=dalcinl%2Fcuda-handle


Great! Thanks,

   Matt


>
> PS: Ashwin, you could use contextmanager
> https://docs.python.org/2/library/contextlib.html#contextlib.contextmanager
> to handle the get/restore using Python's with statement, eg.
>
> with gpuarray(vec) as array:
>     launch_cuda_kernel(array)
>
> --
> Lisandro Dalcin
> ============
> Research Scientist
> Computer, Electrical and Mathematical Sciences & Engineering (CEMSE)
> Numerical Porous Media Center (NumPor)
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>
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