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Published in:
2005 | OriginalPaper | Chapter
Performance of Scientific Applications on Modern Supercomputers
Authors : Frank Deserno, Georg Hager, Frank Brechtefeld, Gerhard Wellein
Published in: High Performance Computing in Science and Engineering, Munich 2004
Publisher: Springer Berlin Heidelberg
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We discuss performance characteristics of scientific applications on modern computer architectures, ranging from commodity “off-the-shelf” (COTS) systems like clusters, to tailored High Performance Computing (HPC) systems, e.g. NEC SX6 or CRAY X1. The application programs are selected from important HPC projects which have been supported by the KONWIHR project cxHPC. In general we focus on the single processor performance and give some optimisation/parallelisation hints, if appropriate. For computational fluid dynamics (CFD) applications we also discuss parallel performance to compare COTS with tailored HPC systems. We find, that an HPC environment with a few tailored “central” high-end systems and “local” mid-size COTS systems supports our users' requirements best.