Noncontiguous I/O through PVFS.

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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) ... continued below

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10 pages

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Ching, A.; Choudhary, A.; Liao, W.-K.; Ross, R. & Gropp, W. August 12, 2002.

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Description

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.

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10 pages

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  • Cluster 2002, Chicago, IL (US), 09/24/2002--09/26/2002

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  • Report No.: ANL/MCS/CP-108408
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 801647
  • Archival Resource Key: ark:/67531/metadc738401

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  • August 12, 2002

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

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  • March 25, 2016, 1:54 p.m.

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Ching, A.; Choudhary, A.; Liao, W.-K.; Ross, R. & Gropp, W. Noncontiguous I/O through PVFS., article, August 12, 2002; Illinois. (digital.library.unt.edu/ark:/67531/metadc738401/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.