peredges is
minimized. Most partitioners (including Zoltan-PHG) allows a more
general
model where both vertices and hyperedges can be assigned weights.
It has been
shown that the hypergraph model gives a more accurate representation
of communication cost (volume) than the graph model. In particular,
for sparse matrix-vector multiplication, the hypergraph model
<strong>exactly</strong> represents communication volume. Sparse
matrices can be partitioned either along rows or columns;
in the row-net model the c