172.mgrid
SPEC CPU2000 Benchmark Description File

Benchmark Name

MGXDEMO

Benchmark Author

Eric Barszcz, Paul O Frederickson

Benchmark Program General Category

Computational Fluid Dynamics

Benchmark Description

'MGXDEMO' DEMONSTRATES THE CAPABILITIES OF A VERY SIMPLE MULTIGRID SOLVER IN COMPUTING A THREE DIMENSIONAL POTENTIAL FIELD.

Input Description

1. IT SOLVES ONLY A CONSTANT COEFFICIENT EQUATION, AND THAT ONLY ON A UNIFORM CUBICAL GRID,
2. IT SOLVES ONLY A SINGLE EQUATION, REPRESENTING A SCALAR FIELD RATHER THAN A VECTOR FIELD.

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   Output Description

   In addition to echoing some of the inputs, the main part of the output is from the smoothed approximate inverse. Only a small fraction of the smoothed output is printed, just enough to assure that all work is being done and at to check intermediate results for accuracy. In addition the L2 norm and Inf norms are are used as a checksum of the output.

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   Programming Language

   FORTRAN

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   Known portability issues

   None

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   Reference

   http://www.nas.nasa.gov/Pubs/TechReports/NASreports/NAS-95-020

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   Last update: 11 December 1999