Hello Andreas, Thank you for your reply. Please check my comments inline. > it would be good to know which applications/benchmarks you were running. > > Have you tried out some well known and open source benchmarks? > > NAS Parallel Benchmarks - > http://www.nas.nasa.gov/publications/npb.html (Fortran Code) > NPB2.3-omp-C.tgz (C version NPB in OpenMP) - > http://www.hpcs.cs.tsukuba.ac.jp/omni-compiler/download/NPB2.3-omp-C.tgz > Stream - http://www.cs.virginia.edu/stream/FTP/Code/stream.c Sorry, I should have mentioned that. I tried some NAS benchmarks: bt, sp and lu-hp. bt and sp were around 60% slower with the balancing turned on, and lu-hp was 10 times slower. I also ran Lulesh, which was roughly 100% slower with the balancing turned on. > Do you have "numad" running on your machine? If it is running you > should stop it. I checked and it's not running. Cheers, Martin
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