Communication Express通讯软件接口:实现技术与性能评测  

The Communication Express Software Interface:Implementation and Performance Evaluation

作　　者：谢旻[1] 刘路[1] 卢宇彤[1] 傅清朝[1] 周恩强[1] 

机构地区：[1]国防科技大学计算机学院,湖南长沙410073

出　　处：《计算机工程与科学》2007年第11期140-144,共5页Computer Engineering & Science

摘　　要：本文描述了一个基于PCI-X总线高速通讯卡的通讯软件接口实现技术,该接口通过虚拟硬件资源,实现了保护的用户级通讯操作,提供报文传输和RDMA两种数据传输方式,实现进程间数据的零拷贝传输,同时基于该接口还支持IP报文的传输。测试中该接口在单链路上实现501MB/s,双链路上实现1002MB/s的带宽,在基于Socket接口的测试中,实现了384MB/s的通讯带宽。In this paper, we describe the implementation of a communication software interface which is based on a PCI- X high-speed communication card. This interface virtualizes hardware resources, implements protected user-level communication operations, and provides two data transferring modes：packet send/receive and RDMA. Zero copy data transferring can be executed between processes, and IP packets can be transferred through this interface too. In the tests, we get a maximum 500 MB/s bandwidth between two cards,and a 1003 MB/s bandwidth when we use two rails. We also get a maximum 384 MB/s bandwidth based on the Socket interface.

关 键 词：高性能计算 集群互连 用户级通讯 RDMA 

分 类 号：TP316.4[自动化与计算机技术—计算机软件与理论]