[petsc-users] Fwd: how to set the matrix with the new cell ordering with metis

[Matthew Knepley]

On Sun, Nov 24, 2019 at 5:23 PM Peng Ding <ztdepyahoo at gmail.com> wrote:

>
> Dear sir:
>      I generate the 3D mesh with Tetgen for FVM computation.  I reordered
> the cells and partitioned them with metis.  Then i got an array which
> records the distribution of each cells.  For example, on CPU -0., I have:
>       1, 3, 6 , 7 ....11, 22......
>     But all these cells have non-continuos index, how to set the matrix in
> petsc.
>

You will have to renumber them.

  Thanks,

    Matt


> Regards
>
>
> ztdepyahoo
> ztdepyahoo at gmail.com
>
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