Many-Core vs. Many-Thread Machines: Stay Away From the Valley

We study the tradeoffs between Many-Core machines like Intel's Larrabee and Many-Thread machines like Nvidia and AMD GPGPUs. We define a unified model describing a superposition of the two architectures, and use it to identify operation zones for which each machine is more suitable. Moreover, w...

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Bibliographic Details
Published in:IEEE computer architecture letters 2009-01, Vol.8 (1), p.25-28
Main Authors: Guz, Zvika, Bolotin, Evgeny, Keidar, Idit, Kolodny, Avinoam, Mendelson, Avi, Weiser, Uri C.
Format: Article
Language:English
Subjects:
Architecture
Bandwidth
Computer simulation
Computer Systems
Delay
Engines
Equations
Graphics
Mathematical models
Multi-core/single-chip multiprocessors
Parallel Architectures
Parallel processing
Processor Architectures
Shape
Valleys
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Summary:We study the tradeoffs between Many-Core machines like Intel's Larrabee and Many-Thread machines like Nvidia and AMD GPGPUs. We define a unified model describing a superposition of the two architectures, and use it to identify operation zones for which each machine is more suitable. Moreover, we identify an intermediate zone in which both machines deliver inferior performance. We study the shape of this "performance valley" and provide insights on how it can be avoided.
ISSN:1556-6056
1556-6064
DOI:10.1109/L-CA.2009.4