Limited Combining Strategies for Large-Scale Shared-Memory Multiprocessors

Kyung Ho Lee, Byung Chang Kang

Research output: Contribution to journalArticle

Abstract

In a large-scale shared-memory multiprocessor, there is a possibility of serious contention due to many requests issued concurrently for the same memory location. A multistage combining network, in which each switch is enhanced with combining so that multiple requests directed to the same memory location can form a single request, significantly reduces the amount of the contention. However, employing combining in every switch of a multistage interconnection network tends to increase the cost and to slow down the network. In this paper, assuming a single-job environment, we investigate some simple strategies that allow only a limited portion of a network to have a combining capability. We show that for situations with a limited number of hot spot locations, these simple strategies can provide performance comparable to a complete combining network in which every switch is enhanced with combining

Original languageEnglish
Pages (from-to)109-119
Number of pages11
JournalJournal of Parallel and Distributed Computing
Volume52
Issue number2
DOIs
Publication statusPublished - 1998 Aug 1
Externally publishedYes

Keywords

  • Combining network, hot spots, multiprocessors, multistage interconnection networks, parallel processing, performance analysis

ASJC Scopus subject areas

  • Computer Science Applications
  • Hardware and Architecture
  • Control and Systems Engineering

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