A fixed time performance evaluation of parallel CFD applications
Abstract
The inviscid gas dynamics equations have been solved on the nCUBE 2s computer to better understand the challenges and opportunities that parallel processing presents. Two basic computational fluid dynamics applications problems representing different flow physics are used as test cases. The first problem involves a supersonic flow inside a channel with a ramp surface. This internal flow problem is dominated by large gradients due to shock waves reflected between channel walls. The equations solved axe coupled nonlinear hyperbolic partial differential equations. The second problem is an external flow over airfoil. The flow is subsonic, resulting in a set of elliptic pdes. Analysis of the parallel performance for these applications is presented following a fixed time measurement approach. The results from this study demonstrate that even though these flow simulation problems are communication intensive, they are scalable. This is true even if subdomain communication includes non-nearest neighbors. Parallel computing is shown to be an effective tool for future CFD challenges.
- Authors:
- Publication Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 10161688
- Report Number(s):
- IS-M-790; CONF-941118-3
ON: DE94014240;
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Conference
- Resource Relation:
- Conference: Supercomputing `94 meeting, Washington, DC (United States), 14-18 Nov 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 97 MATHEMATICS AND COMPUTING; IDEAL FLOW; PARALLEL PROCESSING; PERFORMANCE TESTING; FLUID MECHANICS; PRESSURE COEFFICIENT; PARTIAL DIFFERENTIAL EQUATIONS; GASES; 420400; 990200; HEAT TRANSFER AND FLUID FLOW; MATHEMATICS AND COMPUTERS
Citation Formats
Baker, A. M., and Ying, S. X. A fixed time performance evaluation of parallel CFD applications. United States: N. p., 1994.
Web. doi:10.1109/SUPERC.1994.344261.
Baker, A. M., & Ying, S. X. A fixed time performance evaluation of parallel CFD applications. United States. https://doi.org/10.1109/SUPERC.1994.344261
Baker, A. M., and Ying, S. X. 1994.
"A fixed time performance evaluation of parallel CFD applications". United States. https://doi.org/10.1109/SUPERC.1994.344261. https://www.osti.gov/servlets/purl/10161688.
@article{osti_10161688,
title = {A fixed time performance evaluation of parallel CFD applications},
author = {Baker, A. M. and Ying, S. X.},
abstractNote = {The inviscid gas dynamics equations have been solved on the nCUBE 2s computer to better understand the challenges and opportunities that parallel processing presents. Two basic computational fluid dynamics applications problems representing different flow physics are used as test cases. The first problem involves a supersonic flow inside a channel with a ramp surface. This internal flow problem is dominated by large gradients due to shock waves reflected between channel walls. The equations solved axe coupled nonlinear hyperbolic partial differential equations. The second problem is an external flow over airfoil. The flow is subsonic, resulting in a set of elliptic pdes. Analysis of the parallel performance for these applications is presented following a fixed time measurement approach. The results from this study demonstrate that even though these flow simulation problems are communication intensive, they are scalable. This is true even if subdomain communication includes non-nearest neighbors. Parallel computing is shown to be an effective tool for future CFD challenges.},
doi = {10.1109/SUPERC.1994.344261},
url = {https://www.osti.gov/biblio/10161688},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 1994},
month = {Tue Nov 01 00:00:00 EST 1994}
}