[petsc-users] Can I reorder the matrix for iterative methods?

[Hong Zhang]

You can also use runtime option:
-pc_factor_mat_ordering_type <type>
supported types:
natural nd 1wd rcm qmd rowlength

Hong


On Wed, Mar 28, 2012 at 10:50 AM, Matthew Knepley <knepley at gmail.com> wrote:

> On Wed, Mar 28, 2012 at 10:46 AM, recrusader <recrusader at gmail.com> wrote:
>
>> Dear PETSc developers,
>>
>>
>> In order to reorder the matrix, I just find relevant functions for LU
>> decomposition in "PC".
>> My question is whether i can reorder the matrix and then use iterative
>> method like gmres.
>> If it works, how to do it? Thank you very much.
>>
>
>
> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/MatOrderings/MatGetOrdering.html
>
>    Matt
>
>
>> Best,
>> 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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