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Measuring Code Optimization Impact on Voltage Noise

In this paper, the authors characterize the impact of compiler optimizations on voltage noise. While intuition may suggest that the better processor utilization ensured by optimizing compilers results in a small amount of voltage variation, their measurements on a Intel R Core Duo processor show the opposite - the majority of SPEC CPU2006 benchmarks exhibit more voltage droops when aggressively optimized. They show that this increase in noise could be sufficient for a net performance decrease in a typical-case, resilient design.

Provided by: Harvard University Topic: Hardware Date Added: Mar 2013 Format: PDF

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