I/O characterization of a portable astrophysics application on the IBM SP and Intel Paragon [electronic resource]
Many large-scale applications on parallel machines are bottlenecked by the I/O performance rather than the CPU or communication performance of the system. To improve the I/O performance, it is first necessary for system designers to understand the I/O requirements of various applications. This paper...
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| Online Access: |
Online Access |
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| Corporate Authors: | , |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Argonne, Ill. : Oak Ridge, Tenn. :
Argonne National Lab ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1996.
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| Subjects: |
| Summary: | Many large-scale applications on parallel machines are bottlenecked by the I/O performance rather than the CPU or communication performance of the system. To improve the I/O performance, it is first necessary for system designers to understand the I/O requirements of various applications. This paper presents results of a study of the I/O characteristics and performance of a real, large- scale, portable, parallel application in astrophysics, on two different parallel machines--the IBM SP and the Intel Paragon. We instrumented the source code to record all I/O activity and analyzed the resulting trace files. Results show that, for this application, the I/O consists of fairly large writes, and writing data to files is faster on the Paragon, whereas opening and closing files are faster on the SP. |
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| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 05/01/1996. "ANL/MCS/CP--87733" "CONF-960550--2" "TI96008361" ": DABT63-94-C-0049" 4. annual workshop on I/O in parallel and distributed systems, Philadelphia, PA (United States), 27-28 May 1996. Gropp, W.; Lusk, E.; Thakur, R. USDOE, Washington, DC (United States);Advanced Research Projects Agency, Washington, DC (United States);National Aeronautics and Space Administration, Washington, DC (United States);National Science Foundation, Washington, DC (United States) |
| Physical Description: | 18 p. |