CUDA 4.1 performance is as bad as RC2 here... I tested CUDA versions 4.1, 4.1 RC2 and 4.0 on same Blender revision. (GPU: GF 560ti): * v4.1 : 1 min 11 sec * v4.1 RC2 : 1 min 11 sec * v4.0 : 21 sec Performance: 70% slower!
According to "CUDA 4.1 Overview Webinar" video from CUDA website many applications got up to 10% better performance and a few applications got 1-2% lower performance. In case of any performance drop he suggests to file a bug report. Now, if Blender really has 70% lower performance that is very suspicious. Could the reason be a deprecated compiler flag that Blender is still using? Like from release notes: "* For target architecture sm_2x, a new compiler component 'cicc' is used instead of 'nvopencc'. " 26.1.2012 22:10, Thomas Dinges wrote: > Downloading that atm... the RC2 of the 4.1 Toolkit was really slower, > lets see how the final one does! > > Am 26.01.2012 21:03, schrieb Antony Riakiotakis: >> I see the 4.1 toolkit got released today. Anyone else checked how it >> performs and if it can handle the compilation on this one? >> _______________________________________________ >> Bf-committers mailing list >> [email protected] >> http://lists.blender.org/mailman/listinfo/bf-committers _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
