| GPFS文件系统原理和模式IO优化方法 |
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| 引用本文： | 杨昕.GPFS文件系统原理和模式IO优化方法[J].气象科技,2006,34(Z1):27-30. |
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| 作者姓名： | 杨昕 |
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| 作者单位： | 国家气象信息中心高性能计算机室,北京,100081 |
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| 摘 要： | GPFS(通用并行文件系统)普遍应用于IBM大规模集群系统中,能够为并行应用程序提供高性能的I/O存取访问。该文介绍了GPFS的原理和工作机制,并以安装在国家气象信息中心的IBM高性能计算机系统为试验平台,初步测试了在实际环境中GPFS的应用情况,在应用程序中对文件访问进行性能优化的方式有2种:①由主任务负责全部文件访问,②通过MPI-IO在GPFS中实现并行文件访问。测试结果表明,GPFS可以提供很好的文件访问支持,但要想获得较高的性能,需要在应用程序中进行深入调试。
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| 关 键 词： | 并行模式 GPFS Cluster Computing I/O优化 MPI-IO |
| 修稿时间： | 2006年3月23日 |
Principles of GPFS and Methods of I/O Optimization for Meteorological Application |
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| Yang Xi.Principles of GPFS and Methods of I/O Optimization for Meteorological Application[J].Meteorological Science and Technology,2006,34(Z1):27-30. |
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| Authors: | Yang Xi |
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| Abstract: | General Parallel File System(GPFS) is a parallel file system widely used in IBM clusters.It provides applications with high-performance I/O accessment at a large number of nodes.The principles of GPFS as well as the appropriate ways that could possibly be taken to avoid lock conflicts when accessing files in GPFS are described,and the optimized I/O performance is discussed.A couple of initial tests are performed in two IBM Clusters.These tests show that applications with POSIX interface can get an aggregate performance of up to 200 MB/s.However,better performance might be achieved through further code-optimization. |
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| Keywords: | parallel model GPFS cluster computing I/O optimization MPI-IO |
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