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multitasking the code arc3dThe CRAY multitasking system was developed in order to utilize all four processors and sharply reduce the wall clock run time. This paper describes the techniques used to modify the computational fluid dynamics code ARC3D for this run and analyzes the achieved speedup. The ARC3D code solves either the Euler or thin-layer N-S equations using an implicit approximate factorization scheme. Results indicate that multitask processing can be used to achieve wall clock speedup factors of over three times, depending on the nature of the program code being used. Multitasking appears to be particularly advantageous for large-memory problems running on multiple CPU computers.
Document ID
19870060588
Document Type
Conference Paper
Authors
Barton, John T.
(NASA Ames Research Research Moffett Field, CA, United States)
Hsiung, Christopher C.
(Cray Research, Inc. Chippewa Falls, WI, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Subject Category
AERODYNAMICS
Distribution Limits
Public
Copyright
Other