PSTSWM Pentium II Serial Performance

Performance Studies using

PSTSWM

Pentium II / Linux Serial Performance

(Using g77 compiler)

Date/Person: May 19, 1998 / P. Worley
Platform: TORC2 cluster at Oak Ridge National Laboratory:
     10 266-MHz dual Pentium II nodes
Environment: Linux/WinNT
g77 version 0.5.21
Code Version: 6.3
Make Options: MACH=linux COMM=pvm PRECISION=8 PERF=n WORKSPACE=5000000
Compilation Options: g77 -O3
Number of steps: T42: 241 or 481
T85: 49 or 97
T170: 49 or 97
Notes: no blocked Fourier transform library routines were available, so used PSTSWM Fortran routines

MEASURED TIME PER TIMESTEP (SEC)

Problem L1 L2 L3 L16
T42 0.217 0.453 0.687 4.116
T85 1.385 2.917 4.499 25.074
T170 10.808 21.870 32.636  

MEASURED MFLOP/SEC RATES

Problem L1 L2 L3 L16
T42 19.0 18.2 18.0 16.1
T85 17.5 16.6 16.2 15.5
T170 14.2 14.0 14.1  

DISCUSSION

Only one of the two Pentium processors per node were employed in these tests.
Patrick H. Worley / ( worleyph@ornl.gov)
Last Modified Monday, 15-Jul-2002 09:59:31 EDT.
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