PETSc acceleration on novel architectures

[Matthew Knepley]

On Tue, Apr 7, 2009 at 9:07 AM, Stephen Ball <Stephen.R.Ball at awe.co.uk>wrote:

> Hi
>
> We are keen to start investigating whether or not PETSc is suitable for
> acceleration on novel architectures like GPUs, Cell processors, etc.
>
> I would very much like to get your opinions on this.
>
> Do you think such an endeavour is at all feasible with PETSc? If so,
> what areas of PETSc do you think our efforts would best be spent?
>
> Should we for example focus on matrix operations, or on specific
> preconditioners or solvers? Where would be a good place to start?
>
> Can you suggest some specific routines/functions in PETSc that are
> potential candidates for acceleration?


We are actually already working on this, and I plan on having a PETSc-GPU
come out at the end of the year. Therefore, I suggest working on PCs that
are specific to your problems. People are already doing good work on sparse
matrices in general, and solvers will see no speedup at all, since they are
all
logic.

   Matt


>
> Regards
>
> Stephen R. Ball
> Advanced Technologies
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> e-mail: stephen.r.ball at awe.co.uk
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-- 
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener
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