Runtime Power Estimator Calibration for High-Performance Microprocessors

Provided by: edaa
Topic: Hardware
Format: PDF
Accurate runtime power estimation is important for online thermal/power regulation on today's high performance processors. In this paper, the authors introduce a power calibration approach with the assistance of on-chip physical thermal sensors. It is based on a new error compensation method which corrects the errors of power estimations using the feedback from physical thermal sensors. To deal with the problem of limited number of physical thermal sensors, they propose a statistical power correlation extraction method to estimate powers for places without thermal sensors.

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