Processor Power Management Unit Frequency Control
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Solution Overview
Problem
Computer processors face challenges in efficiently managing power consumption and performance due to limitations in controlling operating frequency and voltage, especially as the density of integrated circuits increases, leading to potential overheating and reduced reliability.
Innovation Solution
A power management unit is implemented to control power parameters by using multiple voltage/frequency curves, allowing for independent voltage and frequency control of each core, enabling flexible power management and performance optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the operating frequency of a processor is increased to improve performance, then the processing speed increases, but the power consumption increases and the processor generates more heat
Solution Approach 1:
The patent implements dynamic voltage and frequency scaling by allowing each processing core to operate at independently selected frequencies from a plurality of available frequencies. The system dynamically adjusts the operating frequency of each core based on workload requirements, enabling the processor to transition between different performance and power consumption states rather than operating at a fixed frequency.
Solution Approach 2:
The patent changes the operating frequency parameter of each processing core independently by selecting from multiple available frequency options. By modifying the frequency parameter dynamically based on computational demands, the system optimizes the balance between processing speed and power consumption, allowing higher frequencies only when necessary for specific workloads.
2Productivity
If the operating frequency is increased to improve performance, then the processing capability improves, but the reliability decreases due to overheating and stress
Solution Approach 1:
The system dynamically adjusts the operating frequency of each processing core based on real-time conditions, preventing sustained operation at maximum frequencies that would cause overheating and reliability issues. By transitioning between frequency states, the system maintains processing capability while allowing cooling periods and stress reduction when full performance is not required.
Solution Approach 2:
The patent modifies the operating frequency parameter to optimize the balance between processing capability and reliability. By selecting from multiple frequency options rather than operating continuously at the highest frequency, the system reduces thermal stress and improves reliability while maintaining adequate processing capability for different workload types.
3Device complexity
If traditional voltage/frequency control methods are used, then the system structure remains simple, but the power management flexibility is insufficient
Solution Approach 1:
The patent segments the power management control by allowing each processing core to have independent frequency selection capability. Instead of a unified voltage/frequency control mechanism, the system divides control authority across individual cores, enabling granular power management flexibility while adding only minimal control logic to each core unit.
Solution Approach 2:
The system implements local quality by allowing different processing cores to operate at different frequencies simultaneously based on their specific workload requirements. Each core can independently select its optimal operating frequency from the available options, providing localized optimization without requiring complete system redesign or complex centralized control.
4Adaptability or versatility
If multiple voltage/frequency curves are implemented with independent control, then the power management flexibility improves, but the device complexity increases
Solution Approach 1:
The patent segments the frequency control mechanism into independent selections for each processing core, allowing flexible power management through distributed control rather than centralized management. Each core independently selects its operating frequency from available options, providing adaptability without requiring complex inter-core coordination or centralized control logic.
Solution Approach 2:
The system implements a universal frequency selection mechanism that can be applied to multiple processing cores using the same approach. The same plurality of available frequencies and selection logic is reused across all cores, providing power management flexibility through a scalable, multi-functional control structure rather than requiring unique control mechanisms for each core.
Data Source
AI summary
In an embodiment, a processor includes a plurality of processing engines to execute instructions and a power management unit. The power management unit is to: control an operating frequency and a supply voltage according to a first voltage/frequency curve associated with a first temperature; and in response to a detection of a second temperature in the processor, increase the operating frequency to a second frequency based on a second voltage/frequency curve, wherein, at least one voltage of a first range of voltages, the second voltage/frequency curve specifies a higher frequency than the first voltage/frequency curve. Other embodiments are described and claimed.