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Order-preserving triggering mechanism and data buffering method for collective communication hardware offloading
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Jinbo XU, Dezun DONG, Baofeng LI, Wei ZHANG, Jianying XING, Peng ZHANG
Journal of National Niversity of Defense Technology | 2025, 47(6) : 13 - 23
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Journal of National Niversity of Defense Technology | 2025, 47(6): 13-23
• Computer System and technology •
Order-preserving triggering mechanism and data buffering method for collective communication hardware offloading
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Jinbo XU, Dezun DONG, Baofeng LI, Wei ZHANG, Jianying XING, Peng ZHANG
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  • College of Computer Science and Technology, National University of Defense Technology, Changsha 410073, China
Published: 2025-12-28 doi: 10.11887/j.issn.1001-2486.25030003
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To further optimize the hardware offloading of collective communication based on the network interface card in the "Tianhe" network, and to support more types of collective communication algorithms and larger message sizes, the order-preserving triggering mechanism and data buffering method for collective communication hardware offloading was investigated.An order-preserving triggering mechanism for concurrent multitasking was proposed, which meets the desired semantics of collective communication and ensures the reproducibility of floating-point computation results.A dynamic network data buffering method based on Hash tables and pulsed credit flow control was proposed to alleviate the contradiction between limited hardware buffering resources and the high demand for buffering a large amount of network data from concurrent multitasking.Experimental results show that compared with software-based collective communication operations, this method can support the hardware offloading of various algorithms for several typical collective communication operations, with significant performance improvement. Meanwhile, the hardware implementation cost is low, especially with high utilization of buffering resources.

collective communication  /  hardware offloading  /  triggering mechanism  /  data buffering
Jinbo XU, Dezun DONG, Baofeng LI, Wei ZHANG, Jianying XING, Peng ZHANG. Order-preserving triggering mechanism and data buffering method for collective communication hardware offloading[J]. Journal of National Niversity of Defense Technology, 2025 , 47 (6) : 13 -23 . DOI: 10.11887/j.issn.1001-2486.25030003
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Year 2025 volume 47 Issue 6
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doi: 10.11887/j.issn.1001-2486.25030003
  • Receive Date：2025-03-04
  • Online Date：2026-04-16
  • Published：2025-12-28
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  • Received：2025-03-04
Affiliations
    College of Computer Science and Technology, National University of Defense Technology, Changsha 410073, China
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