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Power gating (PG) and body biasing (BB) are popular leakage control techniques at microarchitectural level. However, their large overhead prevents them from being applied for active leakage reduction. The overhead problem is further magnified by temperature and process variation, leading to the “corner case leakage control” problem. This paper presents an Adaptive Light-Weight Vth Hopping technique...
Runtime leakage control techniques, such as power gating (PG) and body biasing (BB), have been applied in a coarse-grained manner traditionally. In order to enable more aggressive leakage reduction, researchers are seeking ways to control leakage with finer granularity. Our research proposes two novel methods, namely circuit clustering for temporal and spatial idleness exploitation, to systematically...
Run-time Power Gating (RTPG) is a recent technique, which aims at aggressively reducing leakage power consumption. Energy breakeven time (EBT), or equivalent sleep time has been proposed as a critical figure of merit of RTPG. Our research introduces the definition of average EBT in a run-time environment. We develop a method to estimate the average EBT for any given circuit block, considering the...
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