[petsc-dev] PETSc GPU example

[Matthew Knepley]

On Mon, Dec 6, 2021 at 6:40 PM Fande Kong <fdkong.jd at gmail.com> wrote:

> Dear PETSc team,
>
> I am interested in a careful evaluation of PETSc GPU performance in our
> INL cluster.
>
> Any example in PETSc that can show GPU speedup with solving a nonlinear
> equation?
>
> I talked to Junchao; he suggested that I try SNES/tutorial/ex56. I tried
> that, but I could not find any speedup using the GPU. I could attach some
> results of "log_view" later if we would like to see that.
>

We should note that you will only see speedup in the solver, so that
problem has to be pretty large. I believe Mark has good results with it.
The assembly is still all on the CPU. I am working on this over break, and
hope to have a CEED version of it by the new year.

  Thanks,

     Matt


> Appreciate any instructions/comments about running a simple PETSc GPU
> example to get a speedup.
>
> Thanks,
>
> Fande
>


-- 
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

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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