Data parallel implementation of the BRL-QLD code. Final report, Jan 91-Jun 92

Technical Report · Tue Sep 01 04:00:00 EDT 1992

OSTI ID:7009460

Schraml, S J

Massively parallel processing computer technology offers the potential to perform complex three dimensional numerical simulations of blast events in a production environment. In an attempt to evaluate this technology in simulating blast phenomena, the U.S. Army Ballistic Research Laboratory (BRL) adapted one of its blast modeling codes to the Thinking Machines CM-2 (and later CM-200) architecture. The code, which was adapted to the Connection Machine (CM), is BRL-01 D, a quasi-one dimensional, finite difference, single material, polytropic gas fluid dynamics code. This code is primarily used for simulating flow in shock tubes and blast simulators and has been reconfigured for the Connection Machine using the CM Fortran programming language. The performance of the code was measured on the CM for a variety of problem sizes and compiler options, and the performance was compared to that of the original Fortran 77 code on a single processor of a Cray X-MP. The optimum performance of the code on one eighth of a maximum configuration CM-200 is 2.5 times greater than that of the original code on a single processor of a Cray X-MP. The code also proved to be perfectly scalable on the CM architecture, allowing BRL to extrapolate a factor of 20 speedup over the Cray X-MP for a maximum configuration of CM-200. nuclear explosion simulation, shock tubes, computer programming.

• Research Organization: Army Armament Research and Development Command, Aberdeen Proving Ground, MD (United States). Ballistics Research Lab.
• OSTI ID: 7009460
• Report Number(s): AD-A-254695/0/XAB; BRL-TR--3389
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450200* -- Military Technology
Weaponry
& National Defense-- Nuclear Explosions & Explosives
ANALOG SYSTEMS
B CODES
BLAST EFFECTS
COMPUTER ARCHITECTURE
COMPUTER CODES
COMPUTERIZED SIMULATION
COMPUTERS
CRAY COMPUTERS
DYNAMICS
EQUIPMENT
EXPLOSIONS
FORTRAN
FUNCTIONAL MODELS
MATERIALS
MATHEMATICAL MODELS
MECHANICS
MILITARY EQUIPMENT
NUCLEAR EXPLOSIONS
PARALLEL PROCESSING
PROGRAMMING
PROGRAMMING LANGUAGES
SHOCK TUBES
SIMULATION
SIMULATORS
TUBES