Accession Number : ADA330109

Title :   Parallel ALLSPD-3D: Speeding Up Combustor Analysis Via Parallel Processing

Descriptive Note : Technical memo.

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Fricker, David M.

PDF Url : ADA330109

Report Date : JUN 1997

Pagination or Media Count : 10

Abstract : The ALLSPD-3D Computational Fluid Dynamics code for reacting flow simulation was run on a set of benchmark test cases to determine its parallel efficiency. These test cases included non-reacting and reacting flow simulations with varying numbers of processors. Also, the tests explored the effects of scaling the simulation with the number of processors in addition to distributing a constant size problem over an increasing number of processors. The test cases were run on a cluster of IBM RS/60000 Model 590 workstations with ethernet arid ATM networking plus a shared memory SGI Power Challenge L workstation. The results indicate that the network capabilities significantly influence the parallel efficiency, i.e., a shared memory machine is fastest and ATM networking provides acceptable performance. The limitations of ethernet greatly hamper the rapid calculation of flows using ALLSPD-3D.

Descriptors :   *PARALLEL PROCESSING, *COMPUTATIONAL FLUID DYNAMICS, COMPUTERIZED SIMULATION, DISTRIBUTED DATA PROCESSING, COMPUTER COMMUNICATIONS, FLOW VISUALIZATION, HYDRODYNAMIC CODES, COMPUTER NETWORKS, COMPUTER PROGRAM VERIFICATION, COMPUTER BENCHMARKING.

Subject Categories : Computer Systems
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE