[Wien] Benchmarks -- comments please

[Laurence Marks]

I am benchmarking some new nodes (Intel(R) Xeon(R) CPU E5-2660 0 @
2.20GHz) using the standard mpi Wien2k benchmark, and would be
interested in comments/comparisons -- the online mpi benchmark seems
to be a bit outdated. Hyperthreading is turned on (currently not under
my control), and the IB is not working right so these numbers are only
for a single node with two quadcores with openmpi 1.4 (no idea how it
was compiled) and composer_xe_2011_sp1.11.339

Runs on 1 node
==> 16 cores (hyperthreading used)
      Maximum WALL clock time:    93.7425620555878
      Maximum CPU time:           88.3000000000000

==> 4 cores
      Maximum WALL clock time:    221.049882888794
      Maximum CPU time:           210.040000000000

==> 8 cores
      Maximum WALL clock time:    132.835557937622
      Maximum CPU time:           125.560000000000

For comparison, on my older   Intel(R) Xeon(R) CPU           E5410  @ 2.33GHz
 ==> 8 cores
      Maximum WALL clock time:    304.228610000000
      Maximum CPU time:           296.800000000000

N.B., the speed increase with hyperthreading is mainly in HAMILT/HNS
and may be misleading or might be real.

-- 
Professor Laurence Marks
Department of Materials Science and Engineering
Northwestern University
www.numis.northwestern.edu 1-847-491-3996
"Research is to see what everybody else has seen, and to think what
nobody else has thought"
Albert Szent-Gyorgi