[gmx-users] Apples-to-Apples comparison for dpcc benchmark
nmoore at physics.umn.edu
Wed Jun 15 20:53:45 CEST 2005
I want to make sure that I understand the meaning of the GROMACS benchmarks.
When I look at the logfile from a 32processor dpcc run, I see the
following text near the end of the file:
M E G A - F L O P S A C C O U N T I N G
NODE (s) Real (s) (%)
Time: 1464.000 1464.000 100.0
(Mnbf/s) (GFlops) (ps/NODE hour) (NODE hour/ns)
Performance: 79.584 2.878 24.590 40.667
Do I understand correctly that the number to compare is total ps/day,
24.590 ps/Node-hour * 24 hours/day * 32 processors = 18,888 ps/day ?
Additionally, the published parallel dpcc benchmarks use single precision
and grompp options -sort and -shuffle, 5000 timesteps? Are there any
other optimization options I should be aware of when making a comparison?
University of Minnesota
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