[petsc-users] help needed for -snes_mf_operator

[Matthew Knepley]

On Thu, Apr 26, 2012 at 9:33 AM, Dominik Szczerba <dominik at itis.ethz.ch>wrote:

> > You can use -pc_type lu to test for a rank deficient preconditioning
> matrix.
> >
> >    Matt
>
> I get:
>
>
> [0]PETSC ERROR: No support for this operation for this object type!
> [0]PETSC ERROR: Matrix format mpiaij does not have a built-in PETSc LU!


What are you doing trying to debug something in parallel that has nothing
to do with that?
Run in serial, on a small problem. Just messing around will not find the
problem.

   Matt


>
> Dominik
>



-- 
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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