访存密集型应用在SMP机群系统中的性能分析  

Performance Analysis of Memory Intensive Applications on SMP Cluster

作　　者：顾丽红[1] 吴少刚[1] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,山东东营257061

出　　处：《小型微型计算机系统》2006年第7期1258-1261,共4页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60303016)资助;国家"九七三"计划项目(2005C8321600)资助;中国石油大学(华东)校基金项目"分布式应用系统集群技术研究"资助.

摘　　要：SM P机群系统因其良好的性价比、卓越的可扩展性与可用性,逐渐成为当前高性能计算机领域的主流结构.这种结点内共享存储、结点间消息传递的两级混合结构是目前并行计算研究的热点.在单个SM P结点中,总线和内存带宽是否满足CPU和I/O的需求对于访存密集型应用的性能影响很大.本文针对访存密集型应用的特点测试分析了在SM P机群中访存冲突对系统性能的影响,结果表明我们的SM P结点存在性能瓶颈,这种量化分析对于设计大规模的基于SM P的机群系统有很好的指导意义.SMP clusters are the mainstream architectures in high performance computing because of their good cost performance ratio, excellent scalability and availability. A hybrid parallel programming paradigm combined intra-node shared-memory programming mode and inter-node message-passing programming mode has been becoming hot in research, In a single SMP node, whether system bus and memory bandwidths meet the CPUs and IO needs heavily affects the performance of memory-intensive applications. This paper evaluates the effect of memory access contention to performance of memory-intensive applications on a SMP cluster. The result shows that performance bottleneck exists in these SMP nodes of the SMP cluster due to deficient system bus and memory bandwidth. This quantitative analysis is beneficial to guiding large scale SMP Cluster design.

关 键 词：访存密集应用 SMP机群 OPENMP 软件DSM系统 JIAJIA 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]