Adaptive Real-Time Methodology for Optimizing Energy-Efficient Computing

Dynamic voltage and frequency scaling (DVFS) is an effective way to reduce energy and power consumption in microprocessor units.

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Adaptive Real-Time Methodology for Optimizing Energy-Efficient Computing

Dynamic voltage and frequency scaling (DVFS) is an effective way to reduce energy and power consumption in microprocessor units. Current implementations of DVFS suffer from inaccurate modeling of power requirements and usage, and from inaccurate characterization of the relationships between the applicable variables. A system and method is proposed that adjusts CPU frequency and voltage based on run-time calculations of the workload processing time, as well as a calculation of performance sensitivity with respect to CPU frequency. The system and method are processor independent, and can be applied to either an entire system as a unit, or individually to each process running on a system.

U.S. Patent No.: 7,971,073 (DOE S104886)

Patent Application Filing Date: November 3, 2006

Patent Issue Date: June 28, 2011

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