[petsc-users] TS and snes_grid_sequence

[Matthew Knepley]

On Wed, Feb 10, 2016 at 4:19 PM, Jed Brown <jed at jedbrown.org> wrote:

> Barry Smith <bsmith at mcs.anl.gov> writes:
> >      We do not currently have library code to do grid sequence within a
> time-step. I believe that providing this requires a great deal of
> "replumbing" of the TS solvers to make them "grid sequence aware". This is
> true I believe for both traditional grid sequencing and FAS (I would be
> happy if Emil or Jed could prove me wrong).  There are seemingly multiple
> ways to do the grid sequencing:
>
> I'm pretty sure you could use TS solved by FAS when Peter and I were
> working on it.  But my test just failed and it looks like some work
> vectors aren't being obtained correctly.  I'm afraid I can't dig into it
> right now.
>

I use FAS with TS for the magma runs and it works.

  Matt

-- 
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
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