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D-DOSA:DPU-Based Dataflow Offloading and Sparse Allreduce Framework for Distributed Training

delete2025-11-19
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PRE
AI
Z
Zhenqi Yu
W
Wenjing Li
郭
郭少勇 (Shaoyong Guo)
李庆锋 封面图
李庆锋 (Qingfeng Li)
齐峰 封面图
齐峰 (Feng Qi)
J
Jiapeng Xiu
DOI:10.1109/TCC.2025.3634564delete
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摘要

摘要

En 中文
通信开销是分布式深度学习的主要瓶颈,阻碍了训练的可扩展性。尽管现有的梯度稀疏化技术减少了网络流量,但它们引入了关键限制:未能优化节点内数据路径,且与高效的、去中心化的Allreduce操作不兼容。为解决这些问题,我们提出了D-DOSA,一种基于DPU的通信卸载框架。D-DOSA包含两项关键创新:1) D-DO,一种架构,通过建立GPU-DPU直接数据路径,将数据加载和节点内通信从主机CPU卸载;2) D-SA,一种新型稀疏Allreduce算法,首次实现了稀疏张量与高性能、环基通信的兼容性。我们在一个8节点、配备DPU的集群上使用包括VGG、LSTM和BERT在内的代表性模型对D-DOSA进行了评估。实验结果表明,与当前最优的稀疏训练基准相比,我们的框架将训练加速最多1.32倍,且不损失精度。最终,D-DOSA表明,在DPU上协同设计数据流架构和通信算法可解决稀疏训练中的关键瓶颈,并为更大系统中的可扩展性能提供了可行路径。
Keyword:
Distributed deep learning
data parallelism
allreduce
gradient sparsification
data processing unit

期刊

I
IEEE Transactions on Cloud Computing
IF:
5
论文数:
1.9K
被引数:
4.3K

机构

S
state grid information and telecommunication group
学者数:
2
论文数: 1
被引数: 0
B
beijing university of posts and telecommunications
学者数:
2.3K
论文数: 861
被引数: 0
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