Tried to read the papers, couldn't follow, them but my guess is you need
to copy the PETSc CG KSP routines and rework them as a new KSP type for these
algorithms.
Barry
> On Feb 28, 2018, at 3:39 AM, Karin&NiKo <niko.ka...@gmail.com> wrote:
>
> Dear PETSc team,
>
> I would like to experiment multi-preconditioned Krylov methods, as presented
> in the paper or Bridson and Greif (https://www.cs.ubc.ca/~rbridson/mpcg/) and
> more specifically in a context of DD like in the paper of Spillane
> (https://hal.archives-ouvertes.fr/hal-01170059/document) or Gosselet
> (https://hal.archives-ouvertes.fr/hal-01056928/document).
>
> It seems to me this is not a basically supported feature of PETSc.
>
> My question :
> Is there a way of doing it by playing with the runtime options of PETSc or do
> I have to implement it in the core of the KSP object? If so, what would be
> the correct design?
>
> Thanks,
> Nicolas
>
