[petsc-users] -mat_partitioning_view

[Jed Brown]

On Mon, Feb 13, 2012 at 18:17, Mohammad Mirzadeh <mirzadeh at gmail.com> wrote:

> When using -mat_partitioning_view flag, PETSc reports number of edge cuts.
> Is this the number of edge cuts in the graph for the new partitioning (i.e.
> using new global numbering)?
>

yes


>
> Also, does the partitioning favors minimizing the edge cuts over having
> equal number of points per processor? If so, how can this be altered?
>

Metis and ParMetis balance the partitions "equally" (within 1 vertex), then
tries to minimize the edge cut. Assuming that is the partitioner you are
using, that is what you will get.
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