Processor Power Management During Core Activation
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Solution Overview
Problem
Multi-core processors face inefficiencies due to power surges when activating hibernating processor cores, leading to increased short-term power requirements and difficulties in correcting peak power draw issues post-production.
Innovation Solution
A computing device with a power management system that adjusts operating limits of active processor cores based on the number of hibernating cores to be activated, ensuring power consumption remains within the limits of the power source, thereby reducing the likelihood of power surges during activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power source is oversized to accommodate peak power demands during processor core activation, then the power source can handle activation spikes, but this results in inefficiencies and increased cost
Solution Approach 1:
The patent implements dynamic adjustment of operating limits for processor cores based on real-time power availability and activation state. The system continuously monitors power conditions and adjusts operational parameters accordingly, transitioning from static to dynamic power management to optimize both reliability and efficiency
Solution Approach 2:
The system changes operational parameters (operating limits) of processor cores dynamically based on power conditions. By adjusting these parameters in response to activation events and power availability, the system avoids the need for oversized power sources while maintaining adequate power supply during critical transitions
2Power
If additional hibernating processor cores are activated to increase processing power, then processing capability improves, but this causes a spike in power draw from the local power source
Solution Approach 1:
The system performs preliminary actions by adjusting operating limits of active processor cores before hibernating cores are fully activated. This preparatory adjustment of power distribution prevents sudden power spikes during activation transitions
Solution Approach 2:
The patent enables rapid activation of hibernating processor cores by streamlining the power management process. Through pre-adjustment of operating limits and efficient power allocation, the system rushes through the activation process quickly, minimizing the duration and magnitude of power draw spikes
3Loss of energy
If the operating limit of active processor cores is adjusted based on the number of hibernating cores to be activated, then power consumption is managed within limits, but this requires complex power management control
Solution Approach 1:
The power management system implements feedback mechanisms by monitoring the number of active and hibernating processor cores and automatically adjusting operating limits accordingly. This closed-loop control enables effective power consumption management through rule-based decisions rather than complex algorithms
Data Source
AI summary
Technologies of managing power during an activation cycle of a processor core or other compute domain include determining new operation limits for active processor cores or other compute domains during an activation cycle of a hibernating processor core or other hibernating compute domain to reduce the likelihood of a power surge during the activation of the hibernating processor core or other compute domain. The active processor cores or other compute domain are monitored until their operating points are at or below the new operating limits. Thereafter, the hibernating processor core or other hibernating compute domain is activated.