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An Exploration of On-chip Network-based Thread Migration

As the number of cores integrated on a single chip continues to increase, communication has the potential to become a severe bottleneck to overall system performance. The presence of thread sharing and the distribution of data across cache banks on the chip can result in long distance communication. Long distance communication incurs substantial latency that impacts performance; furthermore, this communication consumes significant dynamic power when packets are switched over many Network-on-Chip (NoC) links and routers. Thread migration can mitigate problems created by long distance communication. This thesis presents Moths, which stands for Mobile Threads. Moths is an efficient run-time algorithm that responds automatically to dynamic NoC traffic patterns, providing beneficial thread migration to decrease overall traffic volume and average packet latency. Moths reduces latency by up to 28.4% (18.0% on average) and traffic volume by up to 24.9% (20.6% on average) across a variety of commercial and scientific benchmarks.

Identiferoai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/25840
Date12 January 2011
CreatorsMatthew, Misler
ContributorsNatalie, Enright Jerger
Source SetsUniversity of Toronto
Languageen_ca
Detected LanguageEnglish
TypeThesis

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