[petsc-users] Paralell matrix storage

[Matthew Knepley]

On Wed, Jul 27, 2011 at 8:22 AM, Stefan Kolb <skolb at rocketmail.com> wrote:

> Hi,
>
> I have read in the user-manual that parallel sparse matrices are stored in
> the
> manner that the first n1 rows are stored on the process with rank 0 and the
> next n2 rows on the process with rank 1 and so on. My question is now, is
> it
> possible to store for example the rows 0 to 24 and 50 to 74 on process with
> rank 0 and 25 to 49 and 75 to 99 on process with rank 1 for a 100x100
> matrix
> with two processes.
>

No. The effect of a permutation is accomplished with a MaOrdering.

   Matt


> Best regards,
> Stefan
>



-- 
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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