[Wien] mpi size/cores timing

Laurence Marks L-marks at northwestern.edu
Thu Nov 12 19:25:41 CET 2015


I just ran some tests on a system using the mpi benchmark with up to 512
cores and also increased RKMAX from 6.0 to 9.0. Except for 512 cores (which
is slower for reasons I don't understand) everything scaled roughly as

Time = Constant*(Matrix Size)**2/sqrt(Number of Cores)

We seem to have no updates to the benchmarks page for some years. I would
be interested in results from others, if appropriate sent to me directly.
Thanks.

-- 
Professor Laurence Marks
Department of Materials Science and Engineering
Northwestern University
www.numis.northwestern.edu
Corrosion in 4D: MURI4D.numis.northwestern.edu
Co-Editor, Acta Cryst A
"Research is to see what everybody else has seen, and to think what nobody
else has thought"
Albert Szent-Gyorgi
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