Processor Power Calibration via Management Controller Feedback
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Solution Overview
Problem
Current information handling systems lack a method to accurately detect and mitigate deviations in processor power consumption from accuracy requirements, leading to potential performance degradation and user dissatisfaction.
Innovation Solution
A closed-loop calibration algorithm is implemented, using a management controller to adjust the system gain setting in a voltage regulator, ensuring that the average power consumption of processors matches the average power measurement at the power supply unit, thereby maintaining accurate power control and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the processor power consumption measurement is used directly without calibration, then the system operation is simple, but the power measurement accuracy deteriorates leading to performance degradation
Solution Approach 1:
The patent implements a feedback mechanism where the management controller continuously monitors the difference between processor-reported power consumption and power supply unit measurements, then adjusts the voltage regulator's system gain setting accordingly. This closed-loop feedback resolves the contradiction by automatically calibrating power measurements without requiring complex manual intervention, thereby improving measurement accuracy while maintaining operational simplicity.
Solution Approach 2:
The system performs self-calibration through the management controller that automatically detects measurement deviations and adjusts the voltage regulator settings without external intervention. This self-service approach improves power measurement accuracy while avoiding the complexity of manual calibration procedures, as the system corrects its own measurement errors autonomously.
2Reliability
If the system implements power consumption monitoring and calibration, then the power control accuracy is improved, but the system complexity increases
Solution Approach 1:
The management controller serves multiple functions: it monitors power consumption, detects measurement deviations, calculates calibration adjustments, and communicates with the voltage regulator. By consolidating these diverse functions into a single multi-functional component, the patent improves power control accuracy without proportionally increasing system complexity, as the management controller already exists for other management tasks.
Solution Approach 2:
The closed-loop feedback mechanism enables the system to automatically detect and correct power measurement deviations, improving reliability. The feedback process leverages existing communication interfaces between the management controller, processor, and voltage regulator, thereby achieving improved power control accuracy without adding significant system complexity.
3Manufacturing precision
If no power calibration is performed, then the system operation is straightforward, but power consumption deviations from accuracy requirements are not mitigated
Solution Approach 1:
The system performs automatic self-calibration where the management controller monitors power consumption accuracy and adjusts the voltage regulator's system gain setting without requiring user intervention. This self-service mechanism achieves precise power consumption control while maintaining ease of operation, as the calibration occurs autonomously in the background without disrupting normal system usage.
Solution Approach 2:
The power calibration is performed continuously or periodically in the background without interrupting normal system operations. The management controller continuously monitors power consumption and makes incremental adjustments to the voltage regulator, ensuring continuous power accuracy improvement while maintaining system operation simplicity for the end user.
Data Source
AI summary
An information handling system includes a management controller that may determine average power consumption of a processor, and determine average power measurement at a power supply unit. If the average power consumption of the processor does not match the average power measurement at the power supply unit, then the system may calibrate the average power consumption of the processor to match the average power measurement at the power supply unit.