OpenMP and NUMA architectures I: Investigating memory placement on the SGI origin 3000

Nathan Robertson; Alistair Rendell

doi:10.1007/3-540-44864-0_67

OpenMP and NUMA architectures I: Investigating memory placement on the SGI origin 3000

Nathan Robertson, Alistair Rendell

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	648-656
Number of pages	9
Journal	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	2660
DOIs	https://doi.org/10.1007/3-540-44864-0_67
Publication status	Published - 1 Dec 2003
Externally published	Yes

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OpenMP and NUMA architectures I: Investigating memory placement on the SGI origin 3000

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