Where should we be putting parallelism?

[cathieO]

Should we be calling parallel hypre?
This will depend on profiling data.

[cathieO]

PFMG is called 9100 times 15% of 4 minutes or so.
This can be investigated with the benchmark suite.

[cathieO]

Make a decison on parallelism for the full domain.
The box sizes depend on the domain.
There is a partitioning algorithm, clustering. Berger-Rigoutsos
Seems to be tunable. Balance having some boxes with inactive cells.
Can we say what the smallest box is?

We have examples that are a single layer.
We have a histogram of box sizes, but they aren't representative.

We don't have the dataset for the rectilinear space.