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Re: how to inverse a sparse matrix in Petsc?
- To: petsc-users@xxxxxxxxxxx
- Subject: Re: how to inverse a sparse matrix in Petsc?
- From: "Matthew Knepley" <knepley@xxxxxxxxx>
- Date: Mon, 4 Feb 2008 00:46:29 -0600
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On Feb 4, 2008 12:37 AM, Yujie <recrusader@xxxxxxxxx> wrote:
> Hi,
> Now, I want to inverse a sparse matrix. I have browsed the manual, however,
> I can't find some information. could you give me some advice?
This is generally a bad idea since the inverse is dense. However, you can
use sparse direct factorization if you configure with 3rd party packages like
MUMPS, SuperLU, DSCPACK, or Spooles.
Matt
> thanks a lot.
>
> Regards,
> Yujie
--
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