SV: Subject: Parallel petsc with external UMFPACK

Lars Rindorf Lars.Rindorf at
Tue May 13 11:40:03 CDT 2008

Hi Satish

I'm sorry. My text should have read, that UMFPACK is listed as not available in parallel. My fault.

MUMPS sounds very interesting being a multifrontal solver. I'll try it out. Thanks!

KR, Lars

-----Oprindelig meddelelse-----
Fra: owner-petsc-users at [mailto:owner-petsc-users at] På vegne af Satish Balay
Sendt: 13. maj 2008 18:07
Til: petsc-users at
Emne: Re: Subject: Parallel petsc with external UMFPACK

> From: "Lars Rindorf" <Lars.Rindorf at>
> To: <petsc-users at>

> 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 
> (
> ab
> 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.


> 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

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