Latency Analyses of CC-NUMA and CC-COMA Rings

Authors:
Xiaodong Zhang;Yong Yan
Affiliations:
The University of Texas at San Antonio, USA;The University of Texas at San Antonio, USA
Venue:
ICPP '94 Proceedings of the 1994 International Conference on Parallel Processing - Volume 01
Year:
1994

Citing 4
Cited 1

Comparative performance evaluation of cache-coherent NUMA and COMA architectures

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Cache consistency in hierarchical-ring-based multiprocessors

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The performance of cache-coherent ring-based multiprocessors

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An empirical comparison of the Kendall Square Research KSR-1 and Stanford DASH multiprocessors

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An argument for simple COMA

HPCA '95 Proceedings of the 1st IEEE Symposium on High-Performance Computer Architecture

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Abstract

This paper focuses comparative performance modeling and evaluation of CC-NUMA and CC-COMA on a hierarchical ring shared-memory architecture. Intensive performance measurements of the two models have been conducted on the KSR-1. The experimental results support the analytical models, and present practical observations and comparisons of the two cache coherence memory systems. Our analytical and experimental results show that a CC-COMA system balances the work load well. However the overhead of frequent data movement may match the gains obtained from improving load balance. Although a CC-NUMA system may not automatically balance the load at the system level, it provides an option for a user to explicitly handle data locality for a possible performance improvement.