基于龙芯CPU的服务器访存性能测试与分析  

The Test and Analysis on Memory Access Performance Based on Loongson CPU

作　　者：王松宇[1] 李麟[1] 陈政霖 

机构地区：[1]曙光信息产业(北京)有限公司

出　　处：《信息技术与标准化》2014年第6期32-36,共5页Information Technology & Standardization

基　　金：国家"核高基"重大专项"基于国产CPU/OS的服务器研发与应用推广";项目编号:2012ZX01028001-003

摘　　要：阐述了龙芯3号CPU的性能特点及应用情况,分析了影响内存带宽的因素以及龙芯与至强处理器之间的差别,并使用STRAM测试工具测试出它们之间实际的内存带宽差距。提升龙芯CPU的主频并且改进片内内存控制器来提升内存带宽,同时保证龙芯系列低功耗特点。This article mainly expounds the performance characteristics of the Loongson 3 CPU and its situation of application, and the different in structure of Loongson 3 CPU and Xeon CPU are compared to analysis the factors that could influence memory bandwidth. At last we use STREAM to measure the actual memory bandwidth gap between this two kinds of CPU. It is hoped that the Loongson 3 CPU memory controller could be modified and increase CPU frequency to improve server memory bandwidth, while ensuring low power consumption

关 键 词：龙芯3号CPU Intel至强CPU STREAM 内存带宽 内存控制器CPU主频 功耗 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]