On May 1, 2012, at 7:22 PM, Dave Nystrom wrote:
>
>
>>> 2. Is anyone on this list sufficiently familiar with agmg and the other
>>> PETSc mg solvers to know how to configure the PETSc mg solvers to work more
>>> like agmg? It seems that agmg gives better performance than the PETSc mg
>>> solve
Barry Smith writes:
> On May 1, 2012, at 7:22 PM, Dave Nystrom wrote:
> >
> >>> 2. Is anyone on this list sufficiently familiar with agmg and the other
> >>> PETSc mg solvers to know how to configure the PETSc mg solvers to work
> >>> more
> >>> like agmg? It seems that agmg gives better
Barry Smith writes:
>
> On May 1, 2012, at 8:34 AM, Dave Nystrom wrote:
>
> > I have a 2d resistive mhd code that has an interface to both agmg and
> > various
> > multigrid solvers available from PETSc including gamg, hypre and ml. I'm
> > not
> > that familiar with multigrid and so i
erimenters 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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I'll defer to Mark on the "multigrid philosophy" and agree with him on the
practice. It is always reasonable to try with and without the Krylov
accelerator and pick what is fastest.
Barry
On May 1, 2012, at 9:36 AM, Mark F. Adams wrote:
>
> On May 1, 2012, at 9:40 AM, Barry Smith wrote
On May 1, 2012, at 9:40 AM, Barry Smith wrote:
>
> On May 1, 2012, at 8:34 AM, Dave Nystrom wrote:
>
>> I have a 2d resistive mhd code that has an interface to both agmg and various
>> multigrid solvers available from PETSc including gamg, hypre and ml. I'm not
>> that familiar with multigrid
riments lead.
-- Norbert Wiener
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On May 1, 2012, at 8:34 AM, Dave Nystrom wrote:
> I have a 2d resistive mhd code that has an interface to both agmg and various
> multigrid solvers available from PETSc including gamg, hypre and ml. I'm not
> that familiar with multigrid and so it is difficult for me to know how to
> experiment
I have a 2d resistive mhd code that has an interface to both agmg and various
multigrid solvers available from PETSc including gamg, hypre and ml. I'm not
that familiar with multigrid and so it is difficult for me to know how to
experiment with the various mg packages and tune them to my particula
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