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The design and implementation of a parallel unstructured Euler solver using software primitives

Conference ·
OSTI ID:5587264
; ; ; ;  [1]
  1. NASA, Langley Research Center, VA (United States) ICASE, Hampton, VA (United States) NASA, Langley Research Center, Hampton, VA (United States) Syracuse University, NY (United States)
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This paper is concerned with the implementation of a 3D unstructured-grid Euler-solver on massively parallel distributed-memory computer architectures. The goal is to minimize solution time by achieving high computational rates with a numerically efficient algorithm. An unstructured multigrid algorithm with an edge-based data-structure has been adopted, and a number of optimizations have been devised and implemented in order to accelerate the parallel computational rates. The implementation is carried out by creating a set of software tools, which ease the implementation of computational problems on parallel architecture machines by relieving the user of the low-level machine specific issues. The quantitative effect of the various optimizations are demonstrated, and we show that the combined effect of these optimizations leads to roughly a factor of three performance improvement. The overall solution efficiency is compared with that obtained on the CRAY-YMP vector supercomputer. 16 refs.
Research Organization:
National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center
OSTI ID:
5587264
Report Number(s):
AIAA-Paper--92-0562; CONF-920157--
Country of Publication:
United States
Language:
English

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Related Subjects

99 GENERAL AND MISCELLANEOUS
990200* -- Mathematics & Computers
ALGORITHMS
COMPUTER ARCHITECTURE
COMPUTERS
CRAY COMPUTERS
DIFFERENTIAL EQUATIONS
DIGITAL COMPUTERS
EQUATIONS
EQUATIONS OF MOTION
IMPLEMENTATION
MATHEMATICAL LOGIC
MESH GENERATION
OPTIMIZATION
PARALLEL PROCESSING
PARTIAL DIFFERENTIAL EQUATIONS
PERFORMANCE
PROGRAMMING
SUPERCOMPUTERS
THREE-DIMENSIONAL CALCULATIONS