[petsc-users] ML and linear elasticity

[Jed Brown]

On Mon, Apr 2, 2012 at 06:59, Karin&NiKo <niko.karin at gmail.com> wrote:

> I would like to use ML as a preconditioner for a linear elasticity problem.
> I wonder if there is a way to indicate ML that it is dealing with a vector
> problem.
> I know that when using Prometheus, one must use a block matrix, and I
> would like to know if there is a trick
> in order to use ML in an optimal manner for vector problems.
>

The block size is used if you don't provide any other information. The
preferred approach with petsc-dev is to use MatSetNearNullSpace(). (I'll
make sure this is currently working with ML and reply to this message.)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120402/bc15d0bf/attachment.htm>