PSTSWM Pentium II Serial Performance

Performance Studies using

PSTSWM

Pentium II / Linux Serial Performance

(Using Portland Group pgf77 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
pgf77 Rel 1.6-3
Code Version: 6.3
Make Options: MACH=linux-pg COMM=pvm PRECISION=8 PERF=n WORKSPACE=20000000
Compilation Options: pgf77 -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 0.092 0.208 0.329 2.245
T85 0.622 1.378 2.187 13.744
T170 5.412 11.833 17.688  

MEASURED MFLOP/SEC RATES

Problem L1 L2 L3 L16
T42 45.1 39.6 37.6 29.4
T85 39.0 35.2 33.2 28.2
T170 28.3 25.9 26.0  

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 09:59:32 EDT.
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