[petsc-users] symmetric matrix

[Matthew Knepley]

On Mon, Dec 26, 2011 at 8:14 AM, Alexander Grayver
<agrayver at gfz-potsdam.de>wrote:

> Hello all,
>
> I have two questions:
>
> 1. Is that possible to set MatSetOption(A,MAT_SPD,PETSC_**TRUE); through
> command line?
>

No.


> 2. If I set option above for MPIAIJ matrix do solvers ignore lower
> triangular matrix?
>

No, they only do this for SBAIJ matrices. This is just a flag that can be
checked.

    Matt


> Regards,
> Alexander
>



-- 
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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