[petsc-users] DMDA questions

Xiangdong epscodes at gmail.com
Wed Mar 5 13:16:33 CST 2014

Yes, I am using DMDA. I looked at the DM index page with keywords *coarsen*,
but did not realize that *interpolation* is the key word to search. Thanks
pointing out.



On Wed, Mar 5, 2014 at 1:57 PM, Jed Brown <jed at jedbrown.org> wrote:

> Xiangdong <epscodes at gmail.com> writes:
> > If I first define a DM, and obtain the solution vector on this DM
> (through
> > non multigrid method).  However, given that this DM is so fine, I may
> only
> > need to save/view the solution on a coarsen grid. Is there some functions
> > available in petsc for this instead of writing my own vec scatter?
> Where did you try searching and what terms did you try before asking?
> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMCoarsen.html
> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMCreateInterpolation.html
> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMCreateInjection.html
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