Chapter

Computational Science – ICCS 2007

Volume 4488 of the series Lecture Notes in Computer Science pp 815-822

Scalability Analysis of the SPEC OpenMP Benchmarks on Large-Scale Shared Memory Multiprocessors

  • Karl FürlingerAffiliated withLehrstuhl für Rechnertechnik und Rechnerorganisation, Institut für Informatik, Technische Universität MünchenInnovative Computing Laboratory, Department of Computer Science, University of Tennessee
  • , Michael GerndtAffiliated withLehrstuhl für Rechnertechnik und Rechnerorganisation, Institut für Informatik, Technische Universität München
  • , Jack DongarraAffiliated withInnovative Computing Laboratory, Department of Computer Science, University of Tennessee

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Abstract

We present a detailed investigation of the scalability characteristics of the SPEC OpenMP benchmarks on large-scale shared memory multiprocessor machines. Our study is based on a tool that quantifies four well-defined overhead classes that can limit scalability – for each parallel region separately and for the application as a whole.

Keywords

SPEC Shared Memory Multiprocessors