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- W2086733011 abstract "Abstract The memory wall between the peak performance of microprocessors and their memory performance has become the prominent performance bottleneck for many scientific application codes. New benchmarks measuring data access speeds locally and globally in a variety of different ways are needed to explore the ever increasing diversity of architectures for high‐performance computing. In this paper, we introduce a novel benchmark, APEX‐Map, which focuses on global data movement and measures how fast global data can be fed into computational units. APEX‐Map is a parameterized, synthetic performance probe and integrates concepts for temporal and spatial locality into its design. Our first parallel implementation in MPI and various results obtained with it are discussed in detail. By measuring the APEX‐Map performance with parameter sweeps for a whole range of temporal and spatial localities performance surfaces can be generated. These surfaces are ideally suited to study the characteristics of the computational platforms and are useful for performance comparison. Results on a global‐memory vector platform and distributed‐memory superscalar platforms clearly reflect the design differences between these different architectures. Published in 2007 by John Wiley & Sons, Ltd." @default.
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- W2086733011 date "2007-05-31" @default.
- W2086733011 modified "2023-09-25" @default.
- W2086733011 title "APEX-Map: a parameterized scalable memory access probe for high-performance computing systems" @default.
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- W2086733011 doi "https://doi.org/10.1002/cpe.1166" @default.
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