Understanding the parallel scalability of an implicit unstructured mesh CFD code

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In this paper, the authors identify the scalability bottlenecks of an unstructured grid CFD code (PETSc-FUN3D) by studying the impact of several algorithmic and architectural parameters and by examining different programming models. The authors discuss the basic performance characteristics of this PDE code with the help of simple performance models developed in their earlier work, presenting primarily experimental results. In addition to achieving good per-processor performance (which has been addressed in the cited work and without which scalability claims are suspect) they strive to improve the implementation and convergence scalability of PETSc-FUN3D on thousands of processors.

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10 pages

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Gropp, W. D.; Kaushik, D. K.; Keyes, D. E. & Smith, B. F. September 6, 2000.

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Description

In this paper, the authors identify the scalability bottlenecks of an unstructured grid CFD code (PETSc-FUN3D) by studying the impact of several algorithmic and architectural parameters and by examining different programming models. The authors discuss the basic performance characteristics of this PDE code with the help of simple performance models developed in their earlier work, presenting primarily experimental results. In addition to achieving good per-processor performance (which has been addressed in the cited work and without which scalability claims are suspect) they strive to improve the implementation and convergence scalability of PETSc-FUN3D on thousands of processors.

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10 pages

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  • HiPC 2000, Bangalore (IN), 12/17/2000--12/20/2000; Other Information: PBD: 6 Sep 2000; PBD: 6 Sep 2000

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  • Report No.: ANL/MCS/CP-102789
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 764251
  • Archival Resource Key: ark:/67531/metadc719356

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Office of Scientific & Technical Information Technical Reports

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  • September 6, 2000

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • March 24, 2016, 3:24 p.m.

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Gropp, W. D.; Kaushik, D. K.; Keyes, D. E. & Smith, B. F. Understanding the parallel scalability of an implicit unstructured mesh CFD code, article, September 6, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc719356/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.