renumbering in petsc/src/dm/ao/examples/tutorials/ex2.c

[Yixun Liu]

Hi,
I want to refine the renumbering method in ex2.c.
Firstly determine the inner nodes and boundary nodes for each processors
and then distribute boundary nodes to different processors according to
the number of the inner nodes in the processor. For example, if the
processors holds more inner nodes, it will receive few boundary nodes
for the consideration of load balancing. At last renumber the nodes for
each processor.
I am not sure if this is a good method. Is there  optimal method for
renumbering?

Thanks a lot.

Yixun