(j3.2006) OpenCL usage compared to OMP, MPI, and coarrays

Keith Bierman khbkhb
Tue Oct 4 13:46:56 EDT 2011


On Tue, Oct 4, 2011 at 11:41 AM, Tom Clune <Thomas.L.Clune at nasa.gov> wrote:

> I was at a workshop for GPU's in climate/weather models in Boulder 2-3
> weeks ago.   OpenCL is not ... John Leveque (Cray) made a strong case for
> the fact that directives should soon catch up with hand-tuned CUDA in many
> situations.  PGI did not dispute the claim, and the various compiler types
> in the room did not see it as an outlandish statement.   (Surprised me
> though given general experience with OpenMP performance.)
>
>

Perhaps not so surprising that PGI wouldn't dispute it.



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