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| 用户级通信协议BCL-3对IP协议支持的研究 |
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陈志辉1, 马捷2, 陈国良1, 高帆2
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1.中国科学技术大学,计算机科学与技术系,安徽,合肥,230027;2.中国科学院,计算技术研究所,国家智能计算机研究开发中心,北京,100080
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| 摘要: |
| 为了充分利用高性能网络,研究人员开发了多种用户级通信协议.这些用户级通信协议可以获得底层硬件提供的高带宽、低延迟.然而由于它们提供完全不同的应用程序接口,用户级通信协议往往只能支持科学计算,而不能支持传统的基于Socket接口、采用核心级通信协议的网络应用程序.通过增加一个IP协议支持模块,BCL-3用户级通信协议在支持科学计算的同时,可以有效地支持现有的基于TCP/IP协议的网络应用程序.而且在分析TCP/IP协议软件开销的基础上,IP协议支持模块有针对性地采用了一些优化技术,使运行在BCL-3上的TCP/IP协议可以取得很高的网络性能.改进的BCL-3已经运行在曙光3000L超级服务器上.在曙光3000L上,运行于BCL-3之上的TCP/IP协议取得了最大带宽938Mbps,最小单向延迟48.1μs的性能. |
| 关键词: 高性能网络 用户级通信协议 核心级通信协议 BCL-3 TCP/IP |
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| 基金项目:Supported by the National High-Tech Research and Development Plan of China under Grant Nos.863-306-ZD01-01, 2001AA 111041 (国家高技术研究发展计划(863)) |
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| Study on IP Supporting over User-Level Protocol BCL-3 |
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CHEN Zhi-Hui,MA Jie,CHEN Guo-Liang,GAO Fan
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| Abstract: |
| In order to efficiently exploit high performance network, researchers have developed many user-level protocols, which can achieve high bandwidth and low latency the bottom hardware supplies. But user-level protocols supply a completely different API, which makes them only support science computing, and traditional Socket-based network application program with kernel-level protocol cannot run on them. To solve this problem, a IP supporting module has been implemented on user-level protocol BCL-3, which makes it support both science computing and existing TCP/IP-based network application programs efficiently. And based on software overhead analysis of TCP/IP, BCL-3 adopts some optimization in IP supporting module, which makes TCP/IP over BCL-3 achieve high performance. The improved BCL-3 has been run on Dawning3000L super server. On Dawning3000L, TCP/IP over BCL-3 has achieved performance with maximum bandwidth of 938Mbps and minimum one-way latency of 48.1μs. |
| Key words: high performance network user-level protocol kernel-level protocol BCL-3 TCP/IP |
