Subject: Parallel petsc with external UMFPACK

[Satish Balay]

> From: "Lars Rindorf" <Lars.Rindorf at teknologisk.dk>
> To: <petsc-users at mcs.anl.gov>

> 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/linearsolvertab
> le.html) on the petsc page. Are there any plans to expand petsc to also
> include petsc?

Its listed there. However it says parallel/complex support is not
available.

However - if you need a parallel direct solver - you might explore
MUMPS. The other alternatives are SuperLU_DIST, spooles.

Satish

> The UMFPACK homepage says that there exist a parallization for UMFPACK
> by Steve Hadfield. Can his parallelization be used with petsc?
> 
> I must add, that although I like numerics and maths I do not intend to
> program 'from scratch'.
> 
> Kind regards
> Lars Rindorf