Accession Number:

ADA285796

Title:

Evaluation of a Multiple Instruction/Multiple Data (MIMD) Parallel Computer for CFD Applications

Descriptive Note:

Final rept. Apr 1991-Nov 1992

Corporate Author:

ARMY RESEARCH LAB WATERTOWN MA MATERIALS DIRECTORATE

Personal Author(s):

Report Date:

1994-10-01

Pagination or Media Count:

35.0

Abstract:

In an attempt to evaluate the merits of massively parallel processing computers for the numerical simulation of blast phenomena, the U.S. Army Research Laboratory ARL has adapted one of its blast modeling tools to several unique parallel architectures. This report describes the adaptation of the BRL- QID code, a quasi-one-dimensional, finite difference Euler solver, to the Intel iPSC860 parallel supercomputer. The code was reconfigured for the iPSC860 using FORTRAN 77 and the Intel iPSC860 message-passing library. The performance of the code was measured on the iPSC860 for a variety of problem sizes and processor configurations. The performance was found to be highly dependent on the size of the problem. This problem size dependency was most noticeable when fewer processors were employed. Results of scalability tests indicate that the code performance scales in a roughly linear fashion about extrapolated lines of ideal performance. Nuclear explosion simulation, Shock tubes, Computer programming

Subject Categories:

  • Computer Programming and Software
  • Nuclear Weapons
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE