Multi-GPU server cluster liquid cooling flow distribution method based on reinforcement learning

Through the reinforcement learning-based graph neural network and Actor-Critic architecture, combined with the GPU thermal dynamic characteristics and liquid cooling topology status, adaptive regulation of liquid cooling flow in multi-GPU server clusters is achieved, solving the problems of delayed response and insufficient model adaptability of liquid cooling systems in existing technologies, and improving the system's stability and energy efficiency.

CN120704490AInactive Publication Date: 2025-09-26BEIJING HUAHONG DIGITAL TECH CO LTD
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Patent Information

Application Number
CN202510802664.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-16
Publication Date
2025-09-26
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The liquid cooling system in the existing multi-GPU server cluster cannot reflect GPU thermal fluctuations in real time, resulting in delayed cooling response or excessive flow regulation, affecting system stability and energy efficiency. In addition, the reinforcement learning model lacks the ability to adapt to dynamic changes in hardware topology and fluid paths, increasing deployment costs and difficulty.

Method used

A reinforcement learning-based approach is adopted, through graph neural networks and actor-critic architecture, combined with GPU thermal dynamic characteristics and liquid cooling topology status, to achieve adaptive control of liquid cooling flow, and introduce a policy migration mechanism to support seamless adaptation when the topology structure changes.

Benefits of technology

It improves the heat dissipation efficiency and energy consumption balance control capabilities of multi-GPU server clusters, improves the response speed and robustness of the liquid cooling system under dynamic load changes, and reduces deployment costs and training time.

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Abstract

The invention relates to the technical field of liquid cooling flow distribution, and discloses a multi-GPU server cluster liquid cooling flow distribution method based on reinforcement learning, and the method comprises the steps: S1, collecting the operation state parameters of each GPU in a multi-GPU server, enabling the operation state parameters to comprise core temperature, voltage, current and load utilization rate, carrying out the thermal behavior modeling through a sliding time window, generating a thermal dynamic feature vector representing the GPU short-time thermal trend; and S2, collecting the flow velocity, the temperature difference of inlet and outlet water and the thermal resistance of the cold plate of each channel of the liquid cooling system in real time, and representing the liquid cooling assembly as a graph structure. According to the method, the technical scheme of joint modeling based on the graph neural network and reinforcement learning is adopted, fusion coding is performed on the GPU thermal dynamic characteristics and the topological state of the liquid cooling system, and an Actor-Critic architecture is introduced to realize self-adaptive regulation and control of the liquid cooling flow, so that the technical effect of improving the heat dissipation efficiency and the energy consumption balance control capability of the multi-GPU server cluster is achieved.
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