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Noncontiguous I/O through PVFS [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2002.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
10 pages : digital, PDF file
Additional Creators
Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
With the tremendous advances in processor and memory technology, I/O has risen to become the bottleneck in high-performance computing for many applications. The development of parallel file systems has helped to ease the performance gap, but I/O still remains an area needing significant performance improvement. Research has found that noncontiguous I/O access patterns in scientific applications combined with current file system methods to perform these accesses lead to unacceptable performance for large data sets. To enhance performance of noncontiguous I/O, we have created list I/O, a native version of noncontiguous I/O. We have used the Parallel Virtual File System (PVFS) to implement our ideas. Our research and experimentation shows that list I/O outperforms current noncontiguous I/O access methods in most I/O situations and can substantially enhance the performance of real-world scientific applications.
Report Numbers
E 1.99:anl/mcs/cp-108408
anl/mcs/cp-108408
Subject(s)
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Note
Published through SciTech Connect.
08/12/2002.
"anl/mcs/cp-108408"
Cluster 2002, Chicago, IL (US), 09/24/2002--09/26/2002.
Ross, R.; Gropp, W.; Choudhary, A.; Liao, W.-K.; Ching, A.
Funding Information
W-31-109-ENG-38
View MARC record | catkey: 14346503