GridPartitioner

[friedmud]

Rationale

When meshes are extremely simple we might just want to apply a very simple partitioner.

Description

New Partitioner. Here's what it does:

1. Creates a generated mesh that overlays the domain (use min/max of domain)
2. Takes user specified number of "elements" in each direction (duh)
3. For every element in the mesh to be partitioned... look up where the centroid falls in the generated mesh... assign the element ID of the element it falls in from the generated mesh.

In this way... a human can generate pretty great partitionings for any mesh that's fairly "regular". The toughest part is that of course num_procs == nx*ny*nz... so there will be restrictions on the number of processors you can run on.

Will still be useful for certain problems and for scalability runs.

Impact

None: new capability