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arXiv · 2401.03083

Energy-efficient Decentralized Learning via Graph Sparsification

Xusheng Zhang·Cho-Chun Chiu·Ting He
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Abstract

This work aims at improving the energy efficiency of decentralized learning by optimizing the mixing matrix, which controls the communication demands during the learning process. Through rigorous analysis based on a state-of-the-art decentralized learning algorithm, the problem is formulated as a bi-level optimization, with the lower level solved by graph sparsification. A solution with guaranteed performance is proposed for the special case of fully-connected base topology and a greedy heuristic is proposed for the general case. Simulations based on real topology and dataset show that the proposed solution can lower the energy consumption at the busiest node by 54%-76% while maintaining the quality of the trained model.

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Xusheng Zhang, Cho-Chun Chiu, Ting He. 2024-01-05. Energy-efficient Decentralized Learning via Graph Sparsification. https://arxiv.org/abs/2401.03083

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