Novel HIC-OTN for interconnection of cross-intelligent computing clusters

ZHANG Dechao; SUN Jiang; CAO Shan; ZUO Mingqing; WANG Dong; LI Han

doi:10.11959/j.issn.1000-0801.2025117

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Novel HIC-OTN for interconnection of cross-intelligent computing clusters

Topic: Optical Interconnection for Intelligent Computing | 更新时间：2025-10-31

- Novel HIC-OTN for interconnection of cross-intelligent computing clusters
- Telecommunications Science Vol. 41, Issue 4, Pages: 53-60(2025)
- 作者机构：
  
  中国移动通信有限公司研究院，北京 100053
- 作者简介：
- 基金信息：
  
  The National Key Research and Development Program of China(2024YFB2908305)
- DOI：10.11959/j.issn.1000-0801.2025117
  CLC： TP393
- Received：04 March 2025，
  
  Revised：2025-04-15，
  
  Published：20 April 2025
- 稿件说明：
移动端阅览
张德朝,孙将,曹珊等.面向跨智算集群互联的新型HIC-OTN技术[J].电信科学,2025,41(04):53-60.

ZHANG Dechao,SUN Jiang,CAO Shan,et al.Novel HIC-OTN for interconnection of cross-intelligent computing clusters[J].Telecommunications Science,2025,41(04):53-60.
张德朝,孙将,曹珊等.面向跨智算集群互联的新型HIC-OTN技术[J].电信科学,2025,41(04):53-60. DOI： 10.11959/j.issn.1000-0801.2025117.

ZHANG Dechao,SUN Jiang,CAO Shan,et al.Novel HIC-OTN for interconnection of cross-intelligent computing clusters[J].Telecommunications Science,2025,41(04):53-60. DOI： 10.11959/j.issn.1000-0801.2025117.

摘要

随着全球 AI 产业蓬勃发展，大模型技术对算力需求越来越高，国内外大型科技公司正积极投建超万卡/超十万卡集群。超十万卡集群的发展受限于水电供应、建设投入等因素，而通过高速全光网构建多集群互联的基础网络底座，实现跨集群高效协同训练是重要的潜在解决方案。为满足跨智算集群互联超大带宽、超低时延、超高可靠需求，提出了无损智算光传送网（hitless intelligent computing optical transport network，HIC-OTN）的技术架构及关键技术方案，并基于HIC-OTN完成了首个104 km跨智算集群流水线并行（pipeline parallelism，PP）拉远训练现网技术试验，探索和验证了百公里级跨集群PP训练的可行性。基于800 Gbit/s HIC-OTN互联在52 km和104 km两个智算集群场景下，HIC-OTN完成了等同单节点训练效率98%以上的高效协同训练，并实现了光网络保护倒换对训练效率的无损和无感知。

Abstract

With the rapid development of the global AI industry

the computational power demands of large-scale models continued to grow

prompting major technology companies worldwide to actively construct ultra-large-scale clusters exceeding 10 000 or even 100 000 GPU. Limited by natural resource supply

construction investment

and other constraints

the construction of a multi-cluster interconnected fundamental network through a high-speed all-optical network is an important potential solution for achieving efficient collaborative training across clusters. To meet the ultra-large bandwidth

ultra-low latency

and ultra-high reliability requirements of intelligent computing interconnection

a hitless intelligent computing optical transport network (HIC-OTN) and its key technological solutions were proposed. Based on HIC-OTN

the first field trial of 104 km cross-cluster pipeline parallelism (PP) training had been demonstrated

verifying the feasibility of 100 km-class cross-cluster PP training. Based on the 800 Gbit/s HIC-OTN interconnection

highly efficient collaborative training was achieved in two scenarios (52 km and 104 km clusters)

delivering over 98% of the single-node training efficiency. Moreover

hitless and imperceptible optical network protection switching was demonstrated

ensuring zero impact on training performance.

关键词

Keywords

references

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