[petsc-users] zero out a sub matrix

[Matthew Knepley]

On Mon, Aug 16, 2010 at 2:54 PM, SUN Chun <Chun.SUN at 3ds.com> wrote:

>  Hi Petsc Dev,
>
>
>
> Is there an efficient way to zero out a sub-matrix in the whole matrix? I
> can get it from MatGetSubMatrix easily. Is there a way to put it back
> without looping over the non-zeros?
>

There is no easier way than MatSetValues currently.

   Matt


>
>
> Thanks,
>
> Chun
>
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What most experimenters take for granted before they begin their experiments
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