Volume 1 : Number 1 : Paper 5 |
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June 1998 Special Issue of Best Papers presented at CLEI'96. Bogota
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Title:
User-Level Parallel File I/O
Authors and Affiliations:
Ernst L. Leiss, Department of Computer Science, University of Houston, TX 77204, USA
Yili Wang, Department of Computer Science, University of Houston, TX, USA
Abstract:
Parallel disk I/O subsystems are becoming more important in today`s large-scale parallel machines. Parallel disk systems provide a significant boost in I/O performance reducing the gap between processor and disk speeds. We describe a Unix-like file I/O user interface, implemented in a parallel file I/O subsystems on an MIMD machine, the nCUBE 2. Based on message passing, we develop parallel disk read/write algorithms to achieve higher parallelism when more disk drives are used. We use the closed queuing network model to analyze the effect of some tunable system parameters for our parallel file system. We them performed simulation experiments in order to obtain more realistic performance data, by comparing the original vendor-supplied file system with ours. The results indicate that the speedup in I/O performance is almost equal to the number of disk drives we use. Thus, our user-level parallel file I/O approach will provide scalable I/O performance.
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Received March 1997, Revised September 1997
Full paper, 8 pages
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PDF, 372 Kb ]
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