Paper: Performance parameters and benchmarking of supercomputers

  • Authors:
  • Roger Hockney

  • Affiliations:
  • -

  • Venue:
  • Parallel Computing
  • Year:
  • 1991

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Abstract

The strengths and weaknesses of the most commonly used benchmarks of supercomputer performance are compared (Livermore, Linpack, Perfect, SPEC and EuroBen). The theoretical peak performance is defined and compared with the realised performance on some of these benchmarks. The wide differences are interpreted in terms of terms of the performance parameters r"~, n"1"/"2, f"1"/"2, s"1"/"2, the latter three of which characterise the degradation of performance from inadequate vector length, inadequate computational intensity, and synchronisation overhead. The RINF, POLY benchmarks are defined for measuring these parameters. The PING-PONG benchmark is described for measuring the characteristics of communication in distributed systems, and the dangers associated with use of Speedup to compare the performance of algorithms on multiprocessor systems are discussed.