[petsc-dev] Kernel fusion for vector operations

Matthew Knepley knepley at gmail.com
Fri May 31 13:48:58 CDT 2013


On Fri, May 31, 2013 at 1:56 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
> On May 31, 2013, at 8:19 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>
> > Karl Rupp <rupp at mcs.anl.gov> writes:
> >
> >> Yes, it's not that many custom operations where it really pays off, so
> >> dealing with them 'manually' is probably the better choice over an
> >> automatic machinery which imports other problems elsewhere - I hope
> >> Barry won't shoot me for this statement ;-)
> >
> > Queue rant about computer scientists solving the wrong problems.
>
>    In my heart I've always wanted a nice automatic solution, in practice
> PETSc has always gone with the manually optimize what makes sense approach.


A Computational Scientist with the Heart of a Mathematician :)

   Matt


>
>     Barry

-- 
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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