Power Cap State Arbitration for Server Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Complex systems, such as servers, face oscillatory behavior and undesirable interactions due to competing power control policies, which existing technologies fail to manage effectively, leading to inefficient power consumption and performance issues.
Innovation Solution
A system and method that utilize power and thermal monitor sensors to generate data, which a controller processes to assign priorities to power cap states and generate control signals for a power limiting circuit, enabling scalable policy-based control algorithms to manage multiple competing power criteria without oscillation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power control policies are implemented in complex systems, then power management coverage is improved, but oscillatory behavior and undesirable interactions occur
Solution Approach 1:
The patent introduces a priority-based arbitration mechanism as an intermediary layer between multiple power control policies. This mediator resolves conflicts by assigning hierarchical priorities to different policies, ensuring that higher-priority policies are executed first while lower-priority policies are suppressed or adjusted. This prevents oscillatory behavior caused by competing policies attempting to execute simultaneously, while still maintaining comprehensive power management coverage across all system components.
Solution Approach 2:
The patent dynamically changes the execution parameters of power control policies based on system state and policy priority. By adjusting which policies are active and at what priority level, the system can adapt to different operating conditions while maintaining stability. The priority assignment can be modified based on thermal conditions, power availability, and component criticality, allowing flexible power management without oscillation.
2Loss of energy
If power cap states are adjusted to meet power limits, then power consumption is reduced, but system performance may deteriorate
Solution Approach 1:
The patent applies local quality by allowing different power cap states to be applied to different system components based on their individual priorities and thermal characteristics. Critical components maintain higher power levels to preserve performance, while non-critical components receive stricter power caps. This selective approach reduces overall power consumption without uniformly degrading system performance across all components.
Solution Approach 2:
The patent implements dynamic power cap adjustment based on real-time system conditions. Power caps are not fixed but are continuously adjusted according to thermal states, power availability, and component priorities. This dynamic approach allows the system to maintain optimal performance when power is abundant while reducing consumption when power is limited, preventing permanent performance deterioration.
3Object-affected harmful factors
If thermal limits are enforced through power control, then thermal safety is improved, but system flexibility is reduced
Solution Approach 1:
The patent applies preliminary action by pre-assuring priorities to different power control policies and components before thermal issues arise. This priority framework is established in advance, allowing the system to quickly determine the appropriate power cap state when thermal limits are approached, without requiring complex real-time decision-making that would reduce flexibility. The pre-established priority structure enables rapid thermal protection while maintaining system adaptability.
Data Source
AI summary
A system for setting a power cap state is disclosed. The system includes a plurality of power monitor sensors generating power monitor sensor data and a plurality of thermal monitor sensors generating thermal monitor sensor data. A controller has a plurality of inputs configured to receive the power monitor sensor data and the thermal monitor sensor data, to assign a priority to one of two or more power cap states and to generate a control signal. A power limiting circuit coupled to the controller is configured to receive the control signal and to modify one or more power settings.