SANCUS: Staleness-Aware Communication-Avoiding Full-Graph Decentralized Training in Large-Scale Graph Neural Networks
Summary: SANCUS is a decentralized full-graph GNN trainer that uses bounded embedding-staleness metrics, cached historical embeddings, and adaptive broadcast skipping to avoid communication. It provides convergence guarantees and achieves up to 74% less communication and 1.86× higher throughput without accuracy loss. (summarized by gpt-5.6-luna on Jul 24 2026)
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Authors
- 1. Jingshu Peng (Hong Kong University of Science and Technology)
- 2. Zhao Chen (Hong Kong University of Science and Technology)
- 3. Yingxia Shao (Beijing Institute of Technology)
- 4. Yanyan Shen (Shanghai Jiao Tong University)
- 5. Lei Chen (Hong Kong University of Science and Technology)
- 6. Jiannong Cao (Hong Kong Polytechnic University)
BibTeX Citation
@article{peng_vldb22,
title = {{SANCUS: Staleness-Aware Communication-Avoiding Full-Graph Decentralized Training in Large-Scale Graph Neural Networks}},
author = {Peng, Jingshu and Chen, Zhao and Shao, Yingxia and Shen, Yanyan and Chen, Lei and Cao, Jiannong},
journal = {PVLDB},
series = {{VLDB} '22},
volume = {15},
number = {9},
pages = {1937--1950},
doi = {10.14778/3538598.3538614},
url = {https://doi.org/10.14778/3538598.3538614},
year = {2022}
}
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