[Wien] Slow lapw1

[Laurence Marks]

While testing a vendor's cluster, I came across what might be a
serious issue for future WIen2k jobs. With the latest architecture it
appears that 64 cores can in fact be slower than 32, using the
standard mpi test. The slowdown occurs in both  PDSYGST and PDSYEVX. I
do not think that this is an issue of the vendor's mpi, but one never
knows.

I have posted to the Intel list; it will be interesting to see what if
any responses there are
http://software.intel.com/en-us/forums/showthread.php?t=106950

I would also encourage others who have new hardware to do similar
tests, and if they have similar issues to also post to the thread.

-- 
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