Article(id=1251480543452410660, tenantId=1146029695717560320, journalId=1251234078029037663, issueId=1251480531381207309, articleNumber=null, orderNo=null, doi=10.11887/j.issn.1001-2486.25030003, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1741017600000, receivedDateStr=2025-03-04, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1776305812942, onlineDateStr=2026-04-16, pubDate=1766851200000, pubDateStr=2025-12-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776305812942, onlineIssueDateStr=2026-04-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776305812942, creator=13701087609, updateTime=1776305812942, updator=13701087609, issue=Issue{id=1251480531381207309, tenantId=1146029695717560320, journalId=1251234078029037663, year='2025', volume='47', issue='6', pageStart='1', pageEnd='306', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776305810065, creator=13701087609, updateTime=1776305899308, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251480905865446141, tenantId=1146029695717560320, journalId=1251234078029037663, issueId=1251480531381207309, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251480905865446142, tenantId=1146029695717560320, journalId=1251234078029037663, issueId=1251480531381207309, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=13, endPage=23, ext={EN=ArticleExt(id=1251480543708263220, articleId=1251480543452410660, tenantId=1146029695717560320, journalId=1251234078029037663, language=EN, title=Order-preserving triggering mechanism and data buffering method for collective communication hardware offloading, columnId=1251480536670220899, journalTitle=Journal of National Niversity of Defense Technology, columnName=Computer System and technology, runingTitle=null, highlight=null, articleAbstract=
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.
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为了对“天河”网络中基于网卡的集合通信硬件卸载功能进行进一步优化,以支持更多类型的集合通信算法以及更大的消息尺寸,研究了面向集合通信硬件卸载的维序触发机制和数据缓存方法。提出面向多任务并发的维序触发机制,既满足了期望的集合通信语义,又确保了浮点计算操作结果的可复现性;提出基于哈希表和脉冲信用流控的网络数据动态缓存方法,以缓解有限的硬件缓存资源和多任务并发的大量网络数据缓存需求之间的矛盾问题。实验结果表明,与基于软件方式的集合通信操作相比,该方法可以支持多种典型集合通信操作的多种算法的硬件卸载,且性能提升效果显著,同时,硬件实现代价较低,尤其是在缓存资源方面具有较高的利用率。
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Overall architecture of NIC hardware offloading for collective communication, figureFileSmall=GL0ACddBjAMudrLjZ9CfpQ==, figureFileBig=8Nccky33WejdCaHwnvPMnA==, tableContent=null), ArticleFig(id=1251480552352723108, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=CN, label=图1, caption=
面向集合通信的NIC硬件卸载总体结构, figureFileSmall=GL0ACddBjAMudrLjZ9CfpQ==, figureFileBig=8Nccky33WejdCaHwnvPMnA==, tableContent=null), ArticleFig(id=1251480552608575671, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=EN, label=Fig.2, caption=
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集合通信相关的描述符格式定义, figureFileSmall=RXPYr74gcsc5/8udJGvBpg==, figureFileBig=QZpIzhsP/iPVLnhziH2imA==, tableContent=null), ArticleFig(id=1251480552801513666, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=EN, label=Fig.3, caption=
Schematic diagram of order-preserving triggering mechanism for concurrent multitasking, figureFileSmall=mxh30TaDdZZwpcjxabQ8NQ==, figureFileBig=CLpKvP749kuMUBPET04OwA==, tableContent=null), ArticleFig(id=1251480552902176969, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=CN, label=图3, caption=
面向多任务并发的维序触发机制示意图, figureFileSmall=mxh30TaDdZZwpcjxabQ8NQ==, figureFileBig=CLpKvP749kuMUBPET04OwA==, tableContent=null), ArticleFig(id=1251480552990257359, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=EN, label=Fig.4, caption=
Data buffering structure based on Hash table, figureFileSmall=AXsSPjCVWS9a9VsrO/ENlw==, figureFileBig=j/jo41gDaF4cWnVBY2DMDw==, tableContent=null), ArticleFig(id=1251480553082532053, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=CN, label=图4, caption=
基于Hash表的数据缓存结构, figureFileSmall=AXsSPjCVWS9a9VsrO/ENlw==, figureFileBig=j/jo41gDaF4cWnVBY2DMDw==, tableContent=null), ArticleFig(id=1251480553208361181, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=EN, label=Fig.5, caption=
Performance comparison of broadcast operation between this work and host-based approaches, figureFileSmall=JpkkCX+mhsup/MiFvCjWOA==, figureFileBig=TcTUVy7GMF3XUra5ErUCxg==, tableContent=null), ArticleFig(id=1251480553325801703, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=CN, label=图5, caption=
本工作和基于主机的广播操作性能对比, figureFileSmall=JpkkCX+mhsup/MiFvCjWOA==, figureFileBig=TcTUVy7GMF3XUra5ErUCxg==, tableContent=null), ArticleFig(id=1251480553443242225, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=EN, label=Fig.6, caption=
Performance comparison of reduce operation between this work and host-based approaches, figureFileSmall=FHuFWrn4dg2TOU91upi1Bw==, figureFileBig=T8KxuGDoX9lX+iHCxOR/yw==, tableContent=null), ArticleFig(id=1251480553552294136, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=CN, label=图6, caption=
本工作和基于主机的归约操作性能对比, figureFileSmall=FHuFWrn4dg2TOU91upi1Bw==, figureFileBig=T8KxuGDoX9lX+iHCxOR/yw==, tableContent=null), ArticleFig(id=1251480553623597311, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=EN, label=Tab.1, caption=
Average utilization efficiency test results for single-path Hash buffer
, figureFileSmall=null, figureFileBig=null, tableContent=
| 消息大小 | 1路并发 | 8路并发 | 32路并发 |
|---|
| 256 B | 0.01 | 0.09 | 0.39 |
| 4 KB | 0.12 | 1.13 | 4.31 |
| 8 KB | 0.49 | 2.82 | 10.10 |
| 16 KB | 1.61 | 5.79 | 19.97 |
| 32 KB | 1.85 | 6.37 | 23.52 |
| 48 KB | 2.27 | 10.70 | 36.20 |
| 64 KB | 2.60 | 19.10 | 49.17 |
| 128 KB | 4.71 | 29.16 | 72.36 |
| 256 KB | 7.16 | 45.11 | 81.47 |
| 384 KB | 10.23 | 70.15 | 89.55 |
| 512 KB | 13.79 | 85.92 | 93.69 |
| 768 KB | 17.36 | 98.20 | 101.24 |
| 1 MB | 23.69 | 100.92 | 103.47 |
), ArticleFig(id=1251480553728454920, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=CN, label=表1, caption=
单路Hash缓冲区平均使用效率测试结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 消息大小 | 1路并发 | 8路并发 | 32路并发 |
|---|
| 256 B | 0.01 | 0.09 | 0.39 |
| 4 KB | 0.12 | 1.13 | 4.31 |
| 8 KB | 0.49 | 2.82 | 10.10 |
| 16 KB | 1.61 | 5.79 | 19.97 |
| 32 KB | 1.85 | 6.37 | 23.52 |
| 48 KB | 2.27 | 10.70 | 36.20 |
| 64 KB | 2.60 | 19.10 | 49.17 |
| 128 KB | 4.71 | 29.16 | 72.36 |
| 256 KB | 7.16 | 45.11 | 81.47 |
| 384 KB | 10.23 | 70.15 | 89.55 |
| 512 KB | 13.79 | 85.92 | 93.69 |
| 768 KB | 17.36 | 98.20 | 101.24 |
| 1 MB | 23.69 | 100.92 | 103.47 |
), ArticleFig(id=1251480553820729616, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=EN, label=Tab.2, caption=
Resource utilization of this work on FPGA
, figureFileSmall=null, figureFileBig=null, tableContent=
| 资源类型 | 数量 |
|---|
| CLB LUTs | 119112 |
| CLB Registers | 112392 |
| CLB | 22544 |
| LUT as Logic | 117824 |
| LUT as Memory | 1288 |
| LUT Flip Flop Pairs | 58496 |
| Block RAM Tile | 168 |
), ArticleFig(id=1251480553917198616, tenantId=1146029695717560320, journalId=1251234078029037663, articleId=1251480543452410660, language=CN, label=表2, caption=
本工作在FPGA上实现的资源使用情况
, figureFileSmall=null, figureFileBig=null, tableContent=
| 资源类型 | 数量 |
|---|
| CLB LUTs | 119112 |
| CLB Registers | 112392 |
| CLB | 22544 |
| LUT as Logic | 117824 |
| LUT as Memory | 1288 |
| LUT Flip Flop Pairs | 58496 |
| Block RAM Tile | 168 |
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