KSP/PC choice

[Matthew Knepley]

On 7/25/07, Tim Kröger <tim at cevis.uni-bremen.de> wrote:
> Dear Satish
>
> But now, the next problem is that I am not able to use MUMPS.  As
> described in the manual, I start my application using
>
> -ksp_type preonly
> -pc_type lu
> -mat_type aijmumps
> -ksp_monitor
>
> and I get

It appears that you never call MatSetFromOptions() on the matrix you
create, which would prevent the option from changing the type.

   Matt

> [0]PETSC ERROR: MatLUFactorSymbolic() line 1940 in src/mat/interface/matrix.c
> [0]PETSC ERROR: No support for this operation for this object type!
> [0]PETSC ERROR: Matrix type mpiaij  symbolic LU!
> [0]PETSC ERROR: PCSetUp_LU() line 242 in src/ksp/pc/impls/factor/lu/lu.c
> [0]PETSC ERROR: PCSetUp() line 798 in src/ksp/pc/interface/precon.c
> [0]PETSC ERROR: KSPSetUp() line 234 in src/ksp/ksp/interface/itfunc.c
> [0]PETSC ERROR: KSPSolve() line 332 in src/ksp/ksp/interface/itfunc.c
> [0]PETSC ERROR: User provided function() line 396 in unknowndirectory/src/numerics/petsc_linear_solver.C
>
> What is wrong?
>
> Best Regards,
>
> Tim
>
> --
> Dr. Tim Kroeger                            Phone +49-421-218-7710
> tim at mevis.de, tim at cevis.uni-bremen.de      Fax   +49-421-218-4236
>
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What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which
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