how to inverse a sparse matrix in Petsc?

Matthew Knepley knepley at
Mon Feb 4 00:46:29 CST 2008

On Feb 4, 2008 12:37 AM, Yujie <recrusader at> 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.


> 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

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