Computational Sprinting on a Hardware/Software Testbed

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Provided by: Association for Computing Machinery
Topic: Hardware
Format: PDF
CMOS scaling trends have led to an inflection point where thermal constraints (especially in mobile devices that employ only passive cooling) preclude sustained operation of all transistors on a chip - a phenomenon called \"Dark silicon.\" Recent paper proposed computational sprinting - exceeding sustainable thermal limits for short intervals - to improve responsiveness in light of the bursty computation demands of many media-rich interactive mobile applications. Computational sprinting improves responsiveness by activating reserve cores (parallel sprinting) and/or boosting frequency/voltage (frequency sprinting) to power levels that far exceed the system's sustainable cooling capabilities, relying on thermal capacitance to buffer heat.
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