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At high-operating temperature, chip cooling is crucial due to the exponential temperature dependence of leakage current. However, traditional cooling methods, e.g., power/clock gating applied when a temperature threshold is reached, often cause excessive performance degradation. In this paper, we propose a method for delivering lower energy consumption by integrating the cooling and running in a temperature-aware...
H.264/AVC coders use the rate-distortion (R-D) cost function to decide the coding mode for each coding unit for better R-D tradeoff. To evaluate the R-D cost function, both the bit rate and the video quality degradation of the candidate mode must be calculated. In this paper, a fast context-adaptive binary arithmetic coding (CABAC) rate estimation scheme is proposed to accelerate the rate calculation...
Complex software programs are mostly characterized by phase behavior and runtime distributions. Due to the dynamism of the two characteristics, it is not efficient to make workload predictions during design-time. In our work, we present a novel online DVFS method that exploits both phase behavior and runtime distribution during runtime in combined Vdd/Vbb scaling. The presented method performs a bi-modal...
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