[gmx-users] Parallel Timings
math at velocet.ca
Wed Dec 12 17:57:44 CET 2001
On Wed, Dec 12, 2001 at 04:06:20PM +0100, K.A.Feenstra's all...
> "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....
> 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
> 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
The comparative values presented on the parallel benchmarks on the webpage
are in ps per computation-day AFAICT. Took a while to figure that out, but
I think it does say that somewhere on the page.
> _____________ _____________________________________________________
> | | Anton Feenstra Dept. of Biophysical Chemistry |
> | _ _ ___,| K.A.Feenstra at chem.rug.nl University of Groningen |
> | / \ / \'| | | Tel +31 50 363 4327 Nijenborgh 4 |
> |( | )| | | Fax +31 50 363 4800 9747 AG Groningen |
> | \_/ \_/ | | | http://md.chem.rug.nl/~anton The Netherlands |
> | | "Make the Floor Burn" (2 Unlimited) |
> gmx-users mailing list
> gmx-users at gromacs.org
> Please don't post (un)subscribe requests to the list. Use the
> www interface or send it to gmx-users-request at gromacs.org.
Ken Chase, math at velocet.ca * Velocet Communications Inc. * Toronto, CANADA
More information about the gromacs.org_gmx-users