Outline of Algorithm</H3>

<P>Zoltan's hierarchical balancing automates the creation of hierarchical
partitions.  The implementation of Hierarchical Partitioning (HIER) in Zoltan is
due to Jim Teresco (Williams College), with many suggestions and ideas
from the entire Zoltan team.<P>

The hierarchical balancing implementation utilizes a lightweight
intermediate structure and a set of callback functions that permit an
automated and efficient hierarchical balancing which can use any of
the procedures availabl