Title

Performance of scalable shared-memory architectures

Authors

Authors

B. S. Motlagh;R. F. DeMara

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Circuits Syst. Comput.

Keywords

Computer Science, Hardware & Architecture; Engineering, Electrical &; Electronic

Abstract

Analytical models were developed and simulations of memory latency were performed for Uniform Memory Access (UMA), Non-Uniform Memory Access (NUMA), Local-Remote-Global (LRG), and RCR architectures for hit rates from 0.1 to 0.9 in steps of 0.1, memory access times of 10 to 100 ns, proportions of read/write access from 0.01 to 0.1, and block sizes of 8 to 64 words. The RCR architecture provides favorable performance over UMA and NUMA architectures for all ranges of application and system parameters. RCR outperforms LRG architectures when the hit rates of the processor cache exceed 80% and replicated memory exceed 25%. Thus, inclusion of a small replicated memory at each processor significantly reduces expected access time since all replicated memory hits become independent of global traffic. For configurations of up to 32 processors, results show that latency is further reduced by distinguishing burst-mode transfers between isolated memory accesses and those which are incrementally outside the working set.

Journal Title

Journal of Circuits Systems and Computers

Volume

10

Issue/Number

1-2

Publication Date

1-1-2000

Document Type

Article

Language

English

First Page

1

Last Page

22

WOS Identifier

WOS:000090137700001

ISSN

0218-1266

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