I>
must be exploited to avoid redundant computation.  The major
computation is evaluation of the non-zero integrals and the largest
data requirements are due to the Fock and density matrices, both
<I>O(N*N)</I> with <I>N = O(1000)</I>. There are two major problems: 
<UL>
  <LI> distributing and accessing the matrices so as to minimize
       communication costs
  <LI> maintaining load balance in the presence of sparsity and
       large variation in the cost of integral evaluation.
</UL>

<H2>Improved distr