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Parallel spatial direct numerical simulation of boundary-layer flow transition on IBM SP1

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The spatially evolving disturbances that are associated with laminar-to-turbulent transition in three-dimensional boundary-layer flows are computed with the PSDNS code on an IBM SP1 parallel supercomputer. By remapping the distributed data structure during the course of the calculation, optimized serial library routines can be utilized that substantially increase the computational performance. Although the remapping incurs a high communication penalty, the parallel efficiency of the code remains above 40 percent for all performed calculations. By using appropriate compile options and optimized library routines, the serial code achieves 52-56 Mflops on a single node of the SP1 (45 percent of theoretical peak ... continued below

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6 p.

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Hanebutte, U.R.; Joslin, R.D. & Zubair, M. July 1, 1995.

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  • Hanebutte, U.R. Argonne National Lab., IL (United States)
  • Joslin, R.D. National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center
  • Zubair, M. International Business Machines Corp., Yorktown Heights, NY (United States). Thomas J. Watson Research Center

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Description

The spatially evolving disturbances that are associated with laminar-to-turbulent transition in three-dimensional boundary-layer flows are computed with the PSDNS code on an IBM SP1 parallel supercomputer. By remapping the distributed data structure during the course of the calculation, optimized serial library routines can be utilized that substantially increase the computational performance. Although the remapping incurs a high communication penalty, the parallel efficiency of the code remains above 40 percent for all performed calculations. By using appropriate compile options and optimized library routines, the serial code achieves 52-56 Mflops on a single node of the SP1 (45 percent of theoretical peak performance). The actual performance of the PSDNS code on the SP1 is evaluated with a ``real world`` simulation that consists of 1.7 million grid points. Comparisons to the Cray Y/MP and Cray C-90 are made for this large scale simulation.

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6 p.

Notes

OSTI as DE95013675

Source

  • High performance computing `95, Tucson, AZ (United States), 9-13 Apr 1995

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  • Other: DE95013675
  • Report No.: ANL/RA/CP--84600
  • Report No.: CONF-950431--4
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 93990
  • Archival Resource Key: ark:/67531/metadc794022

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • July 1, 1995

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

Description Last Updated

  • Jan. 14, 2016, 6:18 p.m.

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Hanebutte, U.R.; Joslin, R.D. & Zubair, M. Parallel spatial direct numerical simulation of boundary-layer flow transition on IBM SP1, article, July 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc794022/: accessed January 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.