A study of application sensitivity to variation in message passing latency and bandwidth

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Description

This study measures the effects of changes in message latency and bandwidth for production-level codes on a current generation tightly coupled MPP, the Intel Paragon. Messages are sent multiple times to study the application sensitivity to variations in band - width and latency. This method preserves the effects of contention on the interconnection network. Two applications are studied, PCTH, a shock physics code developed at Sandia National Laboratories, and PSTSWM, a spectral shallow water code developed at Oak Ridge National Laboratory and Argonne National Laboratory. These codes are significant in that PCTH is a {open_quote}full physics{close_quotes} application code in production ... continued below

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30 p.

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Worley, P.H.; Mackay, D.R.; Robinson, A.C. & Barragy, E.J. June 1, 1996.

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Description

This study measures the effects of changes in message latency and bandwidth for production-level codes on a current generation tightly coupled MPP, the Intel Paragon. Messages are sent multiple times to study the application sensitivity to variations in band - width and latency. This method preserves the effects of contention on the interconnection network. Two applications are studied, PCTH, a shock physics code developed at Sandia National Laboratories, and PSTSWM, a spectral shallow water code developed at Oak Ridge National Laboratory and Argonne National Laboratory. These codes are significant in that PCTH is a {open_quote}full physics{close_quotes} application code in production use, while PSTSWM serves as a parallel algorithm test bed and benchmark for production codes used in atmospheric modeling. They are also significant in that the message-passing behavior differs significantly between the two codes, each representing an important class of scientific message-passing applications.

Physical Description

30 p.

Notes

OSTI as DE96014269

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  • Other Information: PBD: Jun 1996

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  • Other: DE96014269
  • Report No.: ORNL/TM--13250
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/279676 | External Link
  • Office of Scientific & Technical Information Report Number: 279676
  • Archival Resource Key: ark:/67531/metadc664111

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  • June 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Jan. 21, 2016, 12:38 p.m.

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Worley, P.H.; Mackay, D.R.; Robinson, A.C. & Barragy, E.J. A study of application sensitivity to variation in message passing latency and bandwidth, report, June 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc664111/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.