In this paper, we describe and compare performance of the NAS Parallel Benchmark LU on five different parallel systems spanning two generations of the IBM Scalable POWERparallel architectures. The family of SP systems we consider are: the SP1-TB0, SP1-TB2, SP2-TN, SP2-TN2, and SP2-WN. We describe some of the highlights of our parallel implementation for distributed memory systems. We also discuss some of the optimization steps we used to realize good performance on individual processors and to reduce communication overheads. (ScalParSys)
By: Vijay K. Naik
Published in: RC20046 in 1995
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