172.mgrid
SPEC CPU2000 Benchmark Description File
Benchmark Name
172.mgrid
Benchmark Author
Eric Barszcz, Paul O. Frederickson
Benchmark Program General Category
Multi-grid Solver: 3D Potential Field
Benchmark Description
172.mgrid demonstrates the capabilities of a very simple multigrid solver
in computing a three dimensional potential field.
Adapted by SPEC from the NAS Parallel Benchmarks with modifications for
portability and a different workload.
Input Description
-
It solves only a constant coefficient equation, and only on a uniform
cubical grid.
-
It solves only a single equation, representing a scalar field rather than
a vector field.
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.
Programming Language
Fortran 77
Known portability issues
None
Reference
http://www.nas.nasa.gov/Pubs/TechReports/NASreports/NAS-95-020
Last update: 16 August 2000
