[gmx-users] Parallel Timings

[K.A.Feenstra]

"Jithesh P.V." wrote:
> 
> Hello,
> 
> The logfile from mdrun on multiprocessors reports the
> various timings...Could you please tell me what these
> values indicate? I tried to locate the explanation in
> the manual, but could not.
> 
>                NODE (s)   Real (s)      (%)
>        Time:    508.000    508.000    100.0
>                        8:28
>         (Mnbf/s)  (MFlops) (ps/NODE hour) (NODEhour/ns)
> Performance:9.330  293.136   70.866       14.111

I thought these were pretty obvious....

Time:
cpu-time (derived from number of CPU-cycles used) in seconds
wall-time (as your watch or wall-clock indicates) in seconds
ratio of cpu vs wall time in percent

Performance:
number of Mega non-bonded forces per second
number of Mega floating point operation per second
picosecond of simulation time per hour
hours per nanosecond of simulation time

-- 
Groetjes,

Anton
 _____________ _____________________________________________________
|             | Anton Feenstra       Dept. of Biophysical Chemistry |
|  _   _  ___,| K.A.Feenstra at chem.rug.nl    University of Groningen |
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