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International Journal of

Recent Trends in Engineering

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International Journal of Recent Trends in Engineering (IJRTE)

ISSN 1797-9617

Volume 1, Number 2, May 2009

Issue on Computer Science

Page(s): 201-204

Framework for Improving Parallelism by Write-Update Coherence Protocol in Distributed Shared Memory System

Bal Gopal, Pankaj Kumar

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Abstract

For increasing parallelism in DSM System, the replication of data is to be done. The replication of data increases parallelism by allowing reads of the same data to be executed in parallel. However there is inconsistent result occurs for parallel writes and required to maintain memory consistency. The coherency protocol is required to maintain memory consistency for ensuring the serialization of write operation and that any subsequent reads or writes access the update data. The updates are propagated by the remote site. Now it is upto the coherency protocol to take these update and incorporate the update into the local copies.

We study the memory coherence and memory consistency used in DSM system and analyzed that a framework can be designed that offers the ability to improve parallelism by maintaining the memory consistency with the use of write-update coherence protocol in DSM system.

Index Terms

Distributed Shared Memory (DSM), Memory Coherence, Memory Consistency, coherence protocol

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