arch_summary - A Comparison of Various Multi-core/Many-core...

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School of Electrical Engineering and Computer Science University of Central Florida A Comparison of Various Multi A Comparison of Various Multi -core/Many core/Many -core core Architectures Architectures Huiyang Zhou University of Central Florida Challenges facing microprocessors Challenges facing microprocessors + Moore’s law still holds – Smaller transistor size – More transistors • Power wall – Voltage does not scale – Power density problem • Memory wall – Higher latency to hide • Frequency wall – Diminishing returns in performance – Worsen the power problem
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University of Central Florida Multi Multi -core/Many core/Many -core Processors core Processors • General purpose multi-core CPUs • Graphics processors – AMD/ATI RV670, RV770, etc. – Nvidia G80, GTX280, etc. • Cell Broadband Engine • Larrabee (later) University of Central Florida Power wall Power wall • Key idea: each core runs at lower voltage (potentially lower frequency) • Dynamic power consumption is proportional to FV
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This note was uploaded on 10/03/2011 for the course CDA 6938 taught by Professor Zou,c during the Spring '08 term at University of Central Florida.

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arch_summary - A Comparison of Various Multi-core/Many-core...

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