Whatever software is used, this explicit summation is an expensive
operation. For example, the evaluation of 
to 
terms, using the MPFUN package with 150-digit precision arithmetic,
requires 20 hours on a ``Crimson'' workstation manufactured by Silicon
Graphics, Inc. Thus while such runs can be made, clearly this is
pressing the limits of current workstation technology. Fortunately,
it is possible to perform such computations on a highly parallel
computer system. The details of this parallel algorithm are given in
[4].
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