Hadas Leonov wrote: > After installing with openmpi - I ran some benchmarks for 4 processors > on Mac-Pro: > d.villin: > Leopard performance: 13714 ps/day > old OS performance: 41143 ps/day. > gmx-benchmark : 48000 ps/day. > > d.poly-ch2 > Leopard performance: 8640 ps/day > old OS performance: 18000 ps/day > gmx-benchmark: 20571 ps/day > > old OS refers to OSX 10.4.9. > The slow speed also happens when running only on one CPU. d.villin took > 6 times slower than usual. So it can't just be open-mpi fault, can it? > > Can it be due to compiling gromacs while disabling ia32 optimization? Hi Hadas,
probably you are running the C inner loops now. You will want to not only disable the Itanium inner loops, but at the same time enable the x86 inner loops. Carsten _______________________________________________ gmx-users mailing list gmx-users@gromacs.org http://www.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to [EMAIL PROTECTED] Can't post? Read http://www.gromacs.org/mailing_lists/users.php