[petsc-users] Default preconditioner

[Matthew Knepley]

On Wed, Sep 5, 2012 at 12:07 PM, Michele Rosso <mrosso at uci.edu> wrote:

>  Hi,
>
> if I do not specify any preconditioner, is one used by default?
> If so, which one?
> I am using the DMDA 3d context and petsc3.3-p2.
>

You can see what you are using with -ksp_view.

The default is ILU(0).

   Matt


> Thank you,
> Michele
>
-- 
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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