[petsc-users] pmetis

[Jed Brown]

On Fri, Jan 28, 2011 at 13:19, Stephen Wornom <stephen.wornom at inria.fr>wrote:

> Usually one defines the mesh vertices on the exterior faces and the mesh
> generator determines the location of the mesh vertices inside the
> rectangular.
> Since I have no mesh generator, I simply created a 3D structured mesh and
> wrote the mesh in an unstructured format (tetrahedra, ... etc).
>

So you are storing a structured mesh (perhaps tets) in an unstructured
format?


> Thus metis reads an unstructured mesh.
>

You don't need METIS for such a simple partitioning and METIS does not use
coordinates anyway (it's just a topological graph, perhaps with edge
weights).


>  How do I tell metis to partition the mesh so that the partition boundaries
> are along x= constant lines?
>

I would just use your own code for partitioning.  To subvert METIS, you
could prescribe large weights for edges in directions that you don't want to
be cut.
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