On Mon, 2009-05-11 at 15:09 -0400, Gus Correa wrote: > Mark Hahn wrote: > I haven't checked the Top500 list in detail, > but I think you are right about 80% being fairly high. > (For big clusters perhaps?).
Other way around, maintaining a high efficiency rating at large node counts is a very difficult problem so larger clusters tend to have smaller values. > In the original email I mentioned that Roadrunner (top500 1st), > has Rmax/Rpeak ~= 76%. > > However, without any particular expertise or too much effort, > I got 83.4% Rmax here. :) > I was happy with that number, > until somebody in the OpenMPI list told me that > "anything below 85%" needs improvement. :( At 24 nodes that's probably a reasonable statement. Ashley, _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
