Multi-Core Processor Voltage Control Through Hierarchical Regulation
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Solution Overview
Problem
Existing computer systems face inefficiencies due to the complexity and cost of providing local voltage regulation for multiple processor cores, leading to excessive numbers of low voltage regulators, which complicates system design and reduces overall power efficiency.
Innovation Solution
Implementing a dynamic monitoring and control system using a power efficiency monitor and control circuit (PEMC) to adjust global input voltage (Vin) and downstream voltage regulation parameters across multiple processor cores, optimizing power efficiency by integrating voltage regulation and reducing the need for individual regulators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If local voltage regulation is provided for multiple processor cores, then voltage control precision is improved, but device complexity increases due to excessive numbers of low voltage regulators
Solution Approach 1:
The patent merges multiple individual voltage regulators into a single global voltage regulator that serves multiple processor cores. The global regulator is paired with an on-chip voltage regulator for each core, creating a hierarchical regulation structure. This consolidation reduces the total number of regulators while maintaining voltage control precision through the combination of global oversight and local adjustment capabilities.
Solution Approach 2:
The voltage regulation system is segmented into two levels: a global voltage regulator that provides overall voltage control and on-chip voltage regulators that provide core-specific adjustment. This segmentation allows the global regulator to handle common voltage requirements while individual on-chip regulators address specific core needs, maintaining precision without requiring fully independent regulators for each core.
2Measurement precision
If individual low voltage regulators are provided for each processor core, then voltage control precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple individual voltage regulators into a single global voltage regulator that serves multiple processor cores. The global regulator is paired with an on-chip voltage regulator for each core, creating a hierarchical regulation structure. This consolidation reduces the total number of regulators while maintaining voltage control precision through the combination of global oversight and local adjustment capabilities.
3Measurement precision
If multiple low voltage regulators are provided for multiple processor cores, then voltage control precision is improved, but system space increases
Solution Approach 1:
The patent merges multiple individual voltage regulators into a single global voltage regulator that serves multiple processor cores. The global regulator is paired with an on-chip voltage regulator for each core, creating a hierarchical regulation structure. This consolidation reduces the total number of regulators while maintaining voltage control precision through the combination of global oversight and local adjustment capabilities.
Solution Approach 2:
The voltage regulation system uses a nested structure where on-chip voltage regulators are integrated within each processor core chip, and the global voltage regulator provides overarching control. This nesting allows compact integration of regulation functionality at multiple levels without proportionally increasing system space.
4Device complexity
If a global voltage regulator is used for all processor cores, then device complexity is reduced, but voltage control precision deteriorates
Solution Approach 1:
The voltage regulation system is segmented into two levels: a global voltage regulator that provides overall voltage control and on-chip voltage regulators that provide core-specific adjustment. This segmentation allows the global regulator to handle common voltage requirements while individual on-chip regulators address specific core needs, maintaining precision without requiring fully independent regulators for each core.
Solution Approach 2:
The system dynamically adjusts voltage regulation by combining global control with local on-chip adjustment capabilities. The on-chip regulators can independently fine-tune voltages for specific cores based on their individual requirements, while the global regulator provides coordinated oversight, creating a dynamic multi-level control system that achieves both simplicity and precision.
Data Source
AI summary
Global processor core voltage control through integrated voltage regulation includes outputting, from an integrated voltage regulator to a processor core based on a global input voltage, a regulator output voltage. A power efficiency monitor and control circuit receives voltage control parameters from the integrated voltage regulator. The power efficiency monitor and control circuit controls a global voltage regulator based on the received voltage control parameters to cause an adjustment to the global input voltage.