[petsc-users] Output cell data related to DMDA

Matthew Knepley knepley at gmail.com
Thu Dec 17 11:58:44 CST 2020

On Thu, Dec 17, 2020 at 12:18 PM Denis Davydov <davydden at gmail.com> wrote:

> Dear all,
> I would like to output cell data (eg conductivity coefficient) in VTK for
> DMDA setup.
> Given that I know how many elements/cells are owned locally, I hoped that
> PetscViewerVTKAddField with PETSC_VTK_CELL_FIELD would do the job.
> However I am not sure whether provided vector should be fully distributed
> (no ghosts)? If not, can I get the required ghosts from DMDA created with
> DMDACreate3D ?

I believe that it outputs global vectors, meaning that there are no ghosts.



> Ps. I saw just one relevant discussion on the mailing list.
> Sincerely,
> Denis

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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