[petsc-users] Reference for multi-grid tuning

[Mark Adams]

Guidelines for tuning AMG are really hard to do. There is some
discussion on this in the manual and I am writing a GAMG paper now
(slowly, with others) that has another shot at this sort of thing.  I
can share that with you privately.

Because this sort of one-way text documentation has been inadequate,
I've tried to have examples use good sets of parameters, so that you,
in theory, find a PETSc example that is like your problem and start
from there.

Is your 3D problem explicitly elliptic like a Laplacian or elasticity?

On Wed, Aug 3, 2016 at 4:53 PM, Justin Chang <jychang48 at gmail.com> wrote:
> Hi all,
>
> I want to play around with algebraic multi-grid parameters to optimize
> performance for my 3D problems but I don't have a good idea of where to
> start. Don't really see a detailed reference or tutorial for tuning these
> parameters in the PETSc manual.
>
> Can someone point me to a good paper/reference/book/online resource/etc that
> can give good guidelines on how to tune parameters for implementations
> similar to what's currently in GAMG/ML for instance.
>
> Thanks,
> Justin