symmetric matrices

[Matthew Knepley]

The Fortran interface fell behind. I will fix it in dev, but for now you can
just use the value, 91. You can also use the command line option.

Thanks,

   Matt

On 5/22/06, Randall Mackie <randy at geosystem.us> wrote:
>
> I'm trying to modify my code to take advantage of the fact that my system
> matrix
> is symmetric.
>
> It seemed from reading the manual pages that I could call
> MatCreateMPISBAIJ
> to create a symmetric data matrix.
>
> However, when I tried this, I got the error:
>
> [1]PETSC ERROR: Lower triangular value cannot be set for sbaij format.
> Ignoring these value
> s, run with -mat_ignore_lower_triangular or call
> MatSetOption(mat,MAT_IGNORE_LOWER_TRIANGUL
> AR)!
>
> So I tried including the line:
>
>        call MatSetOption(A,MAT_IGNORE_LOWER_TRIANGULAR,ierr)
>
> But when I tried to compile the code, I then got this message:
>
> fortcom: Error: csem3dfwd.F, line 771: This name does not have a type, and
> must have an explicit type.   [MAT_IGNORE_LOWER_TRIANGULAR]
>        call MatSetOption(A,MAT_IGNORE_LOWER_TRIANGULAR,ierr)
> --------------------------^
>
>
> So, can anyone point me in the right direction for taking advantage of the
> fact that
> my matrices are symmetric? (they are actually complex symmetric, and NOT
> Hermitian).
>
> Thanks, Randy
>
> --
> Randall Mackie
> GSY-USA, Inc.
> PMB# 643
> 2261 Market St.,
> San Francisco, CA 94114-1600
> Tel (415) 469-8649
> Fax (415) 469-5044
>
> California Registered Geophysicist
> License No. GP 1034
>
>


-- 
"Failure has a thousand explanations. Success doesn't need one" -- Sir Alec
Guiness
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