[petsc-dev] DMMG without libpetscsnes?

[Jed Brown]

On Thu, 7 Jan 2010 14:09:21 -0600, Barry Smith <bsmith at mcs.anl.gov> wrote:
>     Yes we would lose that functionality. But maybe ok since the  
> Cascadic multigrid is pretty much mesh sequencing.
> We could avoid supporting adaptive mesh refinement for linear problems  
> (linear problems are silly anyways :-)).

Yes, but putting GMG inside a Schur fieldsplit preconditioner is
something I expect to be doing pretty frequently, and wrapping the
linear operation inside a SNES feels goofy in this context.

> Yes this is a known problem (at least known by me :-) that will need
> to be resolved with the next approach.

Great, I just wanted to make sure it's on the radar.

Jed