[gmx-users] Updating GTX670 PCIE speed from 5GT/s to 8GT/s resulted in about 10% speedup of md_run.

Szilárd Páll pall.szilard at gmail.com
Thu Dec 5 11:20:42 CET 2013

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.


On Wed, Dec 4, 2013 at 6:58 PM, Henk Neefs <henk.neefs at gmail.com> wrote:
> Your suspicion is correct, the CPU is waiting >20% of the runtime for the GPU
> to finish.
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> Henk
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