Re: Parallel petsc with external UMFPACK

["Matthew Knepley" <knepley@xxxxxxxxx>]

On Tue, May 13, 2008 at 8:49 AM, Lars Rindorf
<Lars.Rindorf@xxxxxxxxxxxxxx> wrote:
>
>
> Hi
>
> I'm thinking about using petsc to solve a linear system (Ax=b) using
> parallelization on a couple of linux computers. It is very important for my
> system (electromagnetics) to use a direct solver, such as UMFPACK. Iterative
> solvers perform very poorly.
>
> My question is:  I can see that UMFPACK is not listed
> (http://www-unix.mcs.anl.gov/petsc/petsc-2/documentation/linearsolvertable.html)
> on the petsc page. Are there any plans to expand petsc to also include
> petsc?
>
> The UMFPACK homepage says that there exist a parallization for UMFPACK by
> Steve Hadfield. Can his parallelization be used with petsc?

If you can find it, please send the URL. I looked this morning and
could not locate
this parallel UMFPACK on the web, which makes me very suspicious. We
only like to
wrap supported software, not one-off projects that continually break because no
one is maintaining them.

    Matt

> I must add, that although I like numerics and maths I do not intend to
> program 'from scratch'.
>
> Kind regards
> Lars Rindorf
>
>
>
> _____________________________
>
>
> Lars Rindorf
> M.Sc., Ph.D.
>
> http://www.dti.dk
>
> Danish Technological Institute
> Gregersensvej
>
> 2630 Taastrup
>
> Denmark
> Phone +45 72 20 20 00
>



-- 
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