[petsc-users] DMPlex in Fortran

[Matthew Knepley]

On Fri, Jul 8, 2022 at 10:26 PM Mike Michell <mi.mike1021 at gmail.com> wrote:

> I am using DMPlex for a code with written in Fortran in 2D and 3D. There
> were two questions.
>
> - As a follow up of the previous inquiry:
> https://www.mail-archive.com/petsc-users@mcs.anl.gov/msg43856.html
> Is the local-to-local halo exchange available in Fortran now or still
> pending? Currently local-to-global and global-to-local communication are
> used since local-to-local has not been allowed for Fortran.
>

I just checked, and this Fortran binding is present in main and the latest
release.

  Thanks,

     Matt


> - One code solves discretized equations at each vertex, and another code I
> want to couple physics is solving equations at each cell centroid.
> Basically, the value at cell centroid needs to be mapped to vertex (or vice
> versa) through interpolation/extrapolation for coupling of two codes. Does
> petsc function provide this kind of mapping between cell centroid and
> vertex? The grids for the two codes can be overlapped. I was trying to find
> some FEM infrastructures in petsc, but so far havent found that kind of
> functionality. Can I get any comments on that?
>
> Thanks,
> Mike
>
>

-- 
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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