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Performance Analysis of a Hybrid Overset Multi-block Application on Multiple Architectures

  • M. Jahed Djomehri
  • Rupak Biswas
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2913)

Abstract

This paper presents a detailed performance analysis of a multi-block overset grid CFD application on multiple state-of-the-art computer architectures. The application is implemented using a hybrid MPI+OpenMP programming paradigm that exploits both coarse and fine-grain parallelism. The hybrid model also extends the applicability of multi-block programs to large clusters of SMP nodes. Extensive investigations were conducted on Cray SX-6, IBM Power3 and Power4, and SGI Origin3000 platforms. Overall results for complex vortex dynamics simulations demonstrate that the SX-6 achieves the highest performance and outperforms the RISC-based architectures; however, the best scaling performance was achieved on the Power3.

Keywords

Programming Paradigm NASA Ames Research Master Thread Overset Grid Single Program Multiple Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • M. Jahed Djomehri
    • 1
  • Rupak Biswas
    • 2
  1. 1.CSC, NASA Ames Research CenterMoffett FieldUSA
  2. 2.NAS Division, NASA Ames Research CenterMoffett FieldUSA

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