Research and implementation on multi-mode parallel I/O benchmark Jetter

Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (4): 97-100.

• 研发、测试 • Previous Articles Next Articles

Research and implementation on multi-mode parallel I/O benchmark Jetter

CAO Li-qiang^1,2,LUO Hong-bing¹,ZHANG Xiao-xia¹

1.Institute of Applied Physics and Computational Mathematics，Beijing 100088，China
2.Key Laboratory of Computer System and Architecture，Chinese Academy of Sciences，Beijing 100080，China

Received:2007-06-27 Revised:2007-08-20 Online:2008-02-01 Published:2008-02-01
Contact: CAO Li-qiang

多模式并行I/O测试程序Jetter的研究与实现

曹立强^1,2,罗红兵¹,张晓霞¹

1.北京应用物理与计算数学研究所，北京 100088
2.中国科学院计算机系统结构重点实验室，北京 100080

通讯作者: 曹立强

Abstract

Abstract: This paper proposes a new multi-pattern parallel I/O benchmark called Jetter，which evaluates parallel I/O throughput with either the contiguous I/O pattern or the non-contiguous I/O pattern，in either the share-one-file model or the file-per-process model，by either the POSIX interface or the MPI-I/O interface.Jetter helps end users make sense of the pattern performance law and develop efficient applications in a platform.We have evaluated the parallel I/O bandwidth in a 32 CPU shared memory computer with Jetter.The results show that I/O pattern determines throughput.Optimizing I/O model，interface，etc in a pattern will improve bandwidth 2 or 3 times.

Key words: parallel I/O, access pattern, benchmark

摘要： 并行I/O系统有多种存取模式，它们有各自的存取特点和适用范围。为了获得不同模式下的系统性能，并行I/O测试中往往要综合使用多种微测试程序。这不仅要求用户深入了解并行I/O的特点，而且要求他们熟悉各种并行I/O微测试程序的输入与输出。提出并实现了一个并行I/O测试Jetter，它从接口类型、存取模式和进程－文件关系的角度划分了并行I/O接口，不仅能够测试I/O系统在上述模式下的性能，而且简化了测试工作。实际应用Jetter表明，并行I/O系统对不同模式的支持效果不同，最高差异可以达到两个数量级以上，这些测试结论有助于用户开发高质量的并行程序。

关键词: 并行I/O, 存取模式, 测试程序

CAO Li-qiang^1,2,LUO Hong-bing¹,ZHANG Xiao-xia¹. Research and implementation on multi-mode parallel I/O benchmark Jetter[J]. Computer Engineering and Applications, 2008, 44(4): 97-100.

曹立强^1,2,罗红兵¹,张晓霞¹. 多模式并行I/O测试程序Jetter的研究与实现[J]. 计算机工程与应用, 2008, 44(4): 97-100.

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Research and implementation on multi-mode parallel I/O benchmark Jetter

多模式并行I/O测试程序Jetter的研究与实现

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