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DOI:
Journal of Software:2011.22(zk2):192-198

MPMD 程序CCSM3 的负载均衡分析
吴宏,翟琰,翟季冬
(江南计算技术研究所,江苏 无锡 214083;清华大学 计算机科学与技术系,北京 100084)
Load-Balance Analysis for the MPMD Program CCSM3
WU Hong,ZHAI Yan,ZHAI Ji-Dong
(Jiangnan Institute of Computing Technology, Wuxi 214083, China;Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China)
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Received:July 20, 2011    Revised:December 01, 2011
> 中文摘要: MPI 消息传递的MPMD并行计算模型非常复杂,通常由一组SPMD程序和耦合器组成.这种MPMD计算模型在气候科学计算中十分常见,因此有效的性能分析工具和方法对于开发人员具有非常实际的意义.以MPMD程序CCSM3 为例,着重分析了MPMD 程序与SPMD 程序最显著的区别——耦合器上的性能事件,以耦合器为中心,去发现和定位不同的子程序之间的负载均衡问题,将复杂的MPMD 程序的进程间关系简化为SPMD 程序的交互及SPMD 程序内部的负载均衡问题,从而帮助开发人员和性能调试人员更准确地发现程序中的负载不均衡现象,对程序的设置或者算法进行优化和改进.
中文关键词: MPMD  MPI  CCSM3  负载均衡
Abstract:The model of MPMD program, which is based on MPI, is quite complex and includes several SPMD programs and their coupler. MPMD model is quite popular in climate domain, and it will be quite practical for the developer to understand its characters. This work focuses on the performance of the coupler module of MPMD program CCSM3.0 to locate the possible load-imbalance problem among the subprograms. The load balance issue of complex MPMD program is simplified down to issues of a set of SPMD programs and their interactions, providing good vision for the developers and performance diagnosing individuals to optimize the program.
keywords: MPMD  MPI  CCSM3  load-balance
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基金项目:国家自然科学基金(61103021); 国家高技术研究发展计划(863)(2010AA012403) 国家自然科学基金(61103021); 国家高技术研究发展计划(863)(2010AA012403)
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吴宏,翟琰,翟季冬.MPMD 程序CCSM3 的负载均衡分析.软件学报,2011,22(zk2):192-198

WU Hong,ZHAI Yan,ZHAI Ji-Dong.Load-Balance Analysis for the MPMD Program CCSM3.Journal of Software,2011,22(zk2):192-198