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Realizing Effective MPI-I/O to a Remote Computer Using a Parallel Virtual File System Yuichi TSUJITA Publication IEICE TRANSACTIONS on Information and Systems Vol.E89-D No.2 pp.425-432 Publication Date: 2006/02/01 Online ISSN: 1745-1361 DOI: 10.1093/ietisy/e89-d.2.425 Print ISSN: 0916-8532 Type of Manuscript: Special Section PAPER (Special Section on Parallel/Distributed Computing and Networking) Category: Parallel/Distributed Programming Models, Paradigms and Tools Keyword: MPI, MPI-I/O, Stampi, MPI-I/O process, PVFS, Full Text: PDF(931.3KB)>>
Summary: This paper presents a newly implemented remote MPI-I/O mechanism using a Parallel Virtual File System (PVFS) to achieve high performance data-intensive I/O operations among computers. MPI-I/O extensions were realized in a flexible intermediate library named Stampi to support seamless MPI-I/O operations among computers. With the help of a flexible underlying communication mechanism of the library, MPI-I/O operations are available both inside a computer and among computers with the same MPI-I/O APIs without awareness of underlying communication and I/O mechanisms. To cope with recent data-intensive applications, PVFS was developed, and it provides a huge amount of parallel file system on a Linux PC cluster. Although it is available inside a PC cluster, it is not accessible from a remote computer. To exploit advantage of the PVFS file system in the remote MPI-I/O operations using Stampi, PVFS I/O functions have been implemented in the remote MPI-I/O mechanism. Through performance measurement of primitive MPI-I/O functions, sufficient performance has been achieved and effectiveness of the implementation has been confirmed. | ||||||||||
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