Just to re-iterate what Henk said, this tweak is rather safe and if it happens to cause problems, from what I've read/hear that will become obvious quite quickly. Hence, it is worth trying - especially if you have a CPU-GPU imbalance with your hardware and simulation system.
I have personally used this tweak successfully with X79 and Z77 motherboards and various GeForce cards. Cheers, -- Szilárd On Wed, Dec 4, 2013 at 6:58 PM, Henk Neefs <henk.ne...@gmail.com> wrote: > Your suspicion is correct, the CPU is waiting >20% of the runtime for the GPU > to finish. > -- > Henk > > > -- > View this message in context: > http://gromacs.5086.x6.nabble.com/Updating-GTX670-PCIE-speed-from-5GT-s-to-8GT-s-resulted-in-about-10-speedup-of-md-run-tp5012945p5013082.html > Sent from the GROMACS Users Forum mailing list archive at Nabble.com. > -- > Gromacs Users mailing list > > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a > mail to gmx-users-requ...@gromacs.org. -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.