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MEDUSA - An overset grid flow solver for network-based parallel computer systemsContinuing improvement in processing speed has made it feasible to solve the Reynolds-Averaged Navier-Stokes equations for simple three-dimensional flows on advanced workstations. Combining multiple workstations into a network-based heterogeneous parallel computer allows the application of programming principles learned on MIMD (Multiple Instruction Multiple Data) distributed memory parallel computers to the solution of larger problems. An overset-grid flow solution code has been developed which uses a cluster of workstations as a network-based parallel computer. Inter-process communication is provided by the Parallel Virtual Machine (PVM) software. Solution speed equivalent to one-third of a Cray-YMP processor has been achieved from a cluster of nine commonly used engineering workstation processors. Load imbalance and communication overhead are the principal impediments to parallel efficiency in this application.
Document ID
19930061011
Document Type
Conference Paper
Authors
Smith, Merritt H.
(NASA Ames Research Center Moffett Field, CA, United States)
Pallis, Jani M.
(California Univ. Davis, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: AIAA Computational Fluid Dynamics Conference, 11th, Orlando, FL, July 6-9, 1993, Technical Papers. Pt. 1 (A93-44994 18-34)
Subject Category
Computer Programming And Software
Report/Patent Number
AIAA PAPER 93-3312
Distribution Limits
Public
Copyright
Other
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