University of Illinois Urbana-Champaign

High-performance spectral simulation of turbulent flows in massively parallel machines with distributed memory

Cortese, Thomas A.; Balachandar, S.

Permalink

https://hdl.handle.net/2142/112458

Description

Title
High-performance spectral simulation of turbulent flows in massively parallel machines with distributed memory
Author(s)
  • Cortese, Thomas A.
  • Balachandar, S.
Issue Date
1994-08
Keyword(s)
  • Turbulent Flows
  • Parallel Machines
  • Distributed Memory
  • Spectral Simulation
Abstract
Here we have demonstrated the possibility of very high performance in the implementation of a global spectral methodology on a massively parallel architecture with distributed memory. Spectral simulations of channel flow and thermal convection in a three-dimensional Cartesian geometry have yielded a very high performance - up to 26 Gigaflops per second on a 512 node CM5. In general, implementation of spectral methodology in parallel processors with distributed memory requires non-local inter processor data transfer, which are not restricted to be between nearest neighbors. In spite of their increased communication overhead, better performance is possible in global methodologies owing to their dense matrix operations and organized data communication. In this paper we outline a general methodology for the data parallel implementation of spectral methods on massively parallel machines with distributed memory and following the steps presented here very high performance can be obtained on a wide variety of massively parallel architectures.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 765
  • 1994-6021
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112458
Sponsor(s)/Grant Number(s)
National Science Foundation 94/08
Copyright and License Information
Copyright 1994 Board of Trustees of the University of Illinois

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Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.