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The evolution of microprocessors has been hindered by their increasing power consumption and the heat generation speed on-die. High temperature impairs the processor's reliability and reduces its lifetime. While hardware level Dynamic Thermal Management (DTM) techniques, such as voltage and frequency scaling, can effectively lower the chip temperature when it surpasses the thermal threshold, they inevitably come at the cost of performance degradation. The authors propose an OS level technique that performs thermal-aware job scheduling to reduce the number of thermal trespasses. Their scheduler reduces the amount of hardware DTMs and achieves higher performance while keeping the temperature low.
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