Network Interface Device Power and Temperature Management
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Solution Overview
Problem
Infrastructure Processing Units (IPUs) face challenges in managing power density and temperature profiles due to varying FPGA fabric resource utilization and workload distribution across devices, leading to inefficient cooling and potential device malfunction.
Innovation Solution
A network interface device with an environmental processor that determines ambient conditions such as airflow, orientation, and adjacent slot occupancy to dynamically adjust power usage and performance profiles, using machine learning models and pre-configured profiles to optimize power and cooling based on available cooling capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-power devices are integrated in a form factor such as an Add-In-Card or Package, then device functionality and performance are improved, but power density and temperature profile challenges worsen
Solution Approach 1:
The patent applies local quality by determining temperature profiles at multiple specific locations across the device die and adjusting power allocation accordingly. Different regions of the device receive different power levels based on their local thermal conditions, allowing high-power operation in cooler regions while protecting thermally sensitive areas.
Solution Approach 2:
The system dynamically adjusts power allocation to device regions based on real-time temperature measurements and predicted thermal profiles. The power manager continuously monitors thermal conditions and modifies power distribution adaptively, transitioning from static to dynamic power management to resolve the temperature contradiction.
2Temperature
If cooling solutions such as heat sink and air flow are increased, then temperature control is improved, but power consumption by cooling system increases
Solution Approach 1:
The patent implements feedback by continuously monitoring temperature at multiple die locations and using this information to adjust power allocation. The system creates a closed-loop control where thermal measurements feed back to the power manager, which then modifies power distribution to maintain temperatures within acceptable ranges while minimizing cooling requirements.
Solution Approach 2:
The system changes operational parameters by adjusting power levels to specific device regions based on thermal conditions. Instead of uniformly increasing cooling capacity, the system modifies power distribution parameters to achieve thermal management, thereby reducing the need for high-power cooling solutions.
3Productivity
If power allocation is increased to improve performance, then device performance is improved, but temperature and power density challenges worsen
Solution Approach 1:
The patent applies local quality by allocating power to specific regions of the device die based on their thermal characteristics and workload requirements. Instead of uniform power distribution, the system identifies cooler regions and allocates higher power to those areas, enabling improved performance without proportionally increasing overall power density.
Solution Approach 2:
The system segments the device die into multiple regions with different power allocations. The power manager divides the device into thermal zones and independently controls power distribution to each zone, allowing high-performance operation in favorable regions while maintaining thermal safety in sensitive areas.
Data Source
AI summary
Examples described herein relate to an interface and a network interface device coupled to the interface and comprising circuitry to: control power utilization by a first set of one or more devices based on power available to a system that includes the first set of one or more devices, wherein the system is communicatively coupled to the network interface and control cooling applied to the first set of one or more devices.