The OpenMP programming model is based upon the assumption of uniform memory access. Virtually all current day large scale shared memory computers exhibit some degree of Non-Uniform Memory Access (NUMA). Should OpenMP be extended for NUMA architectures? This paper aims to quantify NUMA effects on the SGI Origin 3000 system as a prelude to answering this important question. We discuss the tools required to study NUMA effects and use them in the study of latency, bandwidth and the solution of a 2-D heat diffusion problem. © Springer-Verlag Berlin Heidelberg 2003.
CITATION STYLE
Robertson, N., & Rendell, A. (2003). OpenMP and NUMA architectures I: Investigating memory placement on the SGI origin 3000. Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2660, 648–656. https://doi.org/10.1007/3-540-44864-0_67
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