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

Authors:
Karl Fürlinger;Michael Gerndt;Jack Dongarra
Affiliations:
Lehrstuhl für Rechnertechnik und Rechnerorganisation, Institut für Informatik, Technische Universität München, and Innovative Computing Laboratory, Department of Computer Scien ...;Lehrstuhl für Rechnertechnik und Rechnerorganisation, Institut für Informatik, Technische Universität München,;Innovative Computing Laboratory, Department of Computer Science, University of Tennessee,
Venue:
ICCS '07 Proceedings of the 7th international conference on Computational Science, Part II
Year:
2007

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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.