Dynamic Power Allocation for Thermal Control in Information Handling Systems
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Solution Overview
Problem
Existing information handling systems face challenges in balancing power control and thermal control, as current techniques do not effectively manage power allocation to system fans, impacting system performance and thermal management.
Innovation Solution
A dynamic run-time bi-directional communication method that monitors power consumption and thermal states, evaluates power and cooling demands, and adjusts power allocation to computing resources and system cooling, using pulse width modulation and messaging protocols like IPMI and DCMI to implement power capping and thermal control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If power is allocated to system fans for thermal control, then cooling performance is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic power allocation to system fans based on real-time thermal conditions and power availability. The system continuously monitors thermal states and adjusts fan power dynamically, transitioning from static to adaptive control, thereby optimizing the balance between cooling performance and power consumption.
Solution Approach 2:
The system changes the power parameter allocated to fans based on thermal conditions and power constraints. By adjusting the power parameter dynamically according to monitored thermal states and available power budgets, the system achieves efficient thermal control without excessive power consumption.
2Use of energy by moving object
If power is limited to computing resources, then power consumption is reduced, but thermal management capability deteriorates
Solution Approach 1:
The patent segments the power budget into different allocations for computing resources and cooling resources. By dividing the total power budget and independently managing power allocation to fans versus computing components, the system can limit computing power consumption while preserving sufficient power for thermal management.
Solution Approach 2:
The system implements feedback mechanisms that monitor thermal states and adjust power allocation accordingly. When thermal conditions indicate insufficient cooling, the system receives feedback and reallocates power from computing resources to cooling resources, ensuring thermal management capability is maintained even under power constraints.
3Temperature
If fan power is increased for better cooling, then thermal control is improved, but system performance deteriorates due to power allocation
Solution Approach 1:
The system dynamically adjusts fan power based on actual thermal conditions rather than maintaining constant high power allocation. This dynamic adaptation allows the system to provide adequate thermal control only when needed, preserving power for computing performance during normal operating conditions.
Solution Approach 2:
The system changes the power parameter allocated to fans based on thermal state thresholds and power availability. By adjusting this parameter adaptively, the system achieves effective thermal control while minimizing the impact on computing performance and overall system productivity.
Data Source
AI summary
A method for allocating power within an information handling system (IHS) includes: monitoring power consumed by components within the IHS; monitoring thermal state of the components; evaluating power demand and cooling demand for each of the components; and adjusting power allocated to at least one of a computing resource and system cooling according to results of the evaluating. An information handling system (IHS) and a controller that both perform similar processes are disclosed.