Processor Core Energy Management via Instantaneous Frequency Scaling
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Solution Overview
Problem
Existing processor core energy management techniques are inadequate for short-term power consumption optimization, as they lack the ability to provide immediate frequency adjustments without increasing power consumption, particularly in portable devices where heat generation and battery life are concerns.
Innovation Solution
Implementing a processor core energy management system that allows for instantaneous frequency changes using a Phase Locked Loop (PLL) and dynamic voltage regulation, enabling adjustments in operating frequency without additional power drain, and utilizing sensors to monitor current consumption to throttle or increase frequency based on load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional functionality is integrated onto a single IC chip, then device capability is improved, but heat generation increases
Solution Approach 1:
The patent implements dynamic frequency adjustment capabilities that allow the processor to operate at different frequency levels based on actual workload requirements. This dynamic operation enables the system to integrate additional functionality while managing heat generation by scaling frequency down when full performance is not needed, thus resolving the contradiction between enhanced capability and heat control
Solution Approach 2:
The system changes operational parameters (frequency and voltage) in real-time based on workload conditions. By monitoring current consumption and adjusting frequency/voltage parameters dynamically, the system can provide additional functionality when needed while reducing power consumption and heat generation during low-demand periods
2Productivity
If processor frequency is increased to improve performance, then productivity is improved, but power consumption increases
Solution Approach 1:
The patent employs dynamic frequency scaling that adjusts processor operating frequency based on real-time workload monitoring. The system can rapidly switch between frequency bins (e.g., from 1 GHz to 2 GHz) to match actual performance requirements, ensuring high productivity when needed while minimizing power consumption during low-demand tasks
Solution Approach 2:
The system implements periodic monitoring of workload conditions and current consumption, with frequency adjustments made at specific intervals or trigger events. This periodic control mechanism allows the processor to operate efficiently at lower frequencies most of the time while periodically boosting to higher frequencies when performance demands arise
3Use of energy by stationary object
If existing energy management techniques are used, then power consumption is monitored, but immediate frequency adjustments cannot be made without increasing power consumption
Solution Approach 1:
The patent implements preliminary preparation of multiple frequency bins and voltage levels before they are needed. The system pre-configures available frequency options and has the infrastructure ready to switch between them instantly. This preliminary preparation eliminates the need for time-consuming frequency changes, enabling immediate adjustment when workload conditions change
Solution Approach 2:
The system introduces an intermediary control mechanism that sits between the workload monitor and the frequency adjustment execution. This intermediary layer (power management logic) can rapidly evaluate current conditions and select appropriate pre-prepared frequency bins, enabling fast response times without the overhead of complex real-time frequency synthesis
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances energy efficiency by allowing for frequency adjustments in less than 1 microsecond, improving performance by gaining an additional frequency bin without increasing voltage supply, thus extending battery life and reducing heat generation in portable devices.
Implementation Method 1
Implementing a processor core energy management system that allows for instantaneous frequency changes using a Phase Locked Loop (PLL)
Implementation Method 2
dynamic voltage regulation, enabling adjustments in operating frequency without additional power drain
Implementation Method 3
utilizing sensors to monitor current consumption to throttle or increase frequency based on load conditions
Data Source
AI summary
Methods and apparatus relating to techniques for processor core energy management are described. In an embodiment, energy management logic causes a modification to energy consumption by an electrical load (such as a processor core) based at least in part on comparison of an electrical current value and an operating current threshold value. The electrical current value is detected at an electrical current sensor coupled to the electrical load. Other embodiments are also disclosed and claimed.