Experiences and results multitasking a hydrodynamics code on global and local memory machines
Conference
·
OSTI ID:6190736
A one-dimensional, time-dependent Lagrangian hydrodynamics code using a Godunov solution method has been multitasked for the Cray X-MP/48, the Intel iPSC hypercube, the Alliant FX series and the IBM RP3 computers. Actual multitasking results have been obtained for the Cray, Intel and Alliant computers and simulated results were obtained for the Cray and RP3 machines. The differences in the methods required to multitask on each of the machines is discussed. Results are presented for a sample problem involving a shock wave moving down a channel. Comparisons are made between theoretical speedups, predicted by Amdahl's law, and the actual speedups obtained. The problems of debugging on the different machines are also described.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6190736
- Report Number(s):
- LA-UR-86-4356; CONF-870831-1; ON: DE87003759
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS
990210* -- Supercomputers-- (1987-1989)
COMPARATIVE EVALUATIONS
COMPUTERS
DIGITAL COMPUTERS
FINITE DIFFERENCE METHOD
FORTRAN
HYDRODYNAMIC MODEL
ITERATIVE METHODS
MATHEMATICAL MODELS
NUMERICAL SOLUTION
ONE-DIMENSIONAL CALCULATIONS
PARALLEL PROCESSING
PARTICLE MODELS
PROGRAMMING
PROGRAMMING LANGUAGES
STATISTICAL MODELS
SUPERCOMPUTERS
THERMODYNAMIC MODEL
990210* -- Supercomputers-- (1987-1989)
COMPARATIVE EVALUATIONS
COMPUTERS
DIGITAL COMPUTERS
FINITE DIFFERENCE METHOD
FORTRAN
HYDRODYNAMIC MODEL
ITERATIVE METHODS
MATHEMATICAL MODELS
NUMERICAL SOLUTION
ONE-DIMENSIONAL CALCULATIONS
PARALLEL PROCESSING
PARTICLE MODELS
PROGRAMMING
PROGRAMMING LANGUAGES
STATISTICAL MODELS
SUPERCOMPUTERS
THERMODYNAMIC MODEL