[petsc-users] DMShellSetCreateRestriction

[Dave May]

On 11 March 2016 at 18:11, anton <popov at uni-mainz.de> wrote:

> Hi team,
>
> I'm implementing staggered grid in a PETSc-canonical way, trying to build
> a custom DM object, attach it to SNES, that should later transfered it
> further to KSP and PC.
>
> Yet, the Galerking coarsening for staggered grid is non-symmetric. The
> question is how possible is it that DMShellSetCreateRestriction can be
> implemented and included in 3.7 release?
>

It's a little more work than just adding a new method within the DM and a
new APIs for DMCreateRestriction() and DMShellSetCreateRestriction().
PCMG needs to be modified to call DMCreateRestriction().



>
> Please, please.
>
> Thanks,
> Anton
>
>
>
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