Adaptive Power State Management in Integrated Circuits
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Solution Overview
Problem
Integrated circuits (ICs) face challenges in managing power states effectively, as frequent transitions to low power states can degrade performance, while infrequent transitions can lead to power wastage, necessitating a balance between performance and power consumption.
Innovation Solution
The IC employs adaptive power state management through a finite state machine and power management circuitry that monitors performance values and quality of service agreements to dynamically adjust operational states, transitioning between power consumption and performance profiles based on measured conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the IC enters a low power state frequently, then power consumption is reduced, but performance degrades
Solution Approach 1:
The patent implements dynamic power state management by allowing the IC to transition between multiple operational states (e.g., active state, low power state, standby state) based on real-time workload conditions. The system dynamically adjusts the power state threshold and transition behavior according to measured performance values and quality of service agreements, enabling flexible adaptation between power consumption and performance requirements.
Solution Approach 2:
The patent employs feedback mechanisms where the IC continuously monitors performance values and compares them against quality of service agreements. Based on this feedback, the system adjusts its power state transition decisions, modifying the threshold for entering low power states to ensure performance requirements are met while maximizing power savings opportunities.
2Productivity
If the IC enters a low power state infrequently, then performance is maintained, but power is wasted
Solution Approach 1:
The system dynamically adjusts the threshold and frequency of entering low power states based on actual workload patterns and performance monitoring. When performance monitoring indicates that the IC can maintain required service levels with less frequent state transitions, the system reduces power consumption by entering low power states more often, thereby resolving the contradiction between maintaining performance and reducing power waste.
3Use of energy by stationary object
If the IC transitions between operational states frequently, then power consumption is optimized, but system stability decreases
Solution Approach 1:
The patent uses feedback from performance monitoring to adjust power state transition thresholds. By continuously comparing measured performance values against quality of service agreements, the system learns from past transitions and modifies future behavior to avoid excessive or inappropriate state changes, thereby stabilizing the system while maintaining power optimization.
Solution Approach 2:
The system performs preliminary assessment of workload conditions and quality of service requirements before transitioning to a low power state. This preliminary action ensures that transitions are made only when conditions are favorable, preventing unstable or premature state changes while still capturing power savings opportunities.
Data Source
AI summary
Methods and apparatuses that relate to an integrated circuit (IC) with adaptive power state management are described. The IC can be coupled with, and can control the operation of, a memory device. The IC and the memory device can be operated in multiple operational states, wherein each operational state may represent a tradeoff point between performance and power consumption. The IC may be capable of: (1) changing the operational state of the IC and/or the operational state of the memory device based on the occurrence of one or more conditions, and/or (2) changing the one or more conditions based on measuring one or more performance values associated with the IC and/or the memory device.