I'm sorry. I got a wrong hash number. I have not yet tried SHA-1-70100b4ec7ba299912bf999f15914c0a29125ffd.
With best regards, PerfectionCat. ----- Original Message ----- >From: PerfectionCat <[email protected]> >To: Sergey Sharybin <[email protected]>; bf-blender developers ><[email protected]> >Date: 2016/8/3, Wed 23:28 >Subject: Re: [Bf-committers] Cycles CUDA Toolkit 8 transition > >Hi. > >I built in SHA-1: 6353ecb996898b4ce2fe8065130ed1f5ea3b6989 and tried it. >The build did not become slow. >However, blender which built in SHA-1: >70100b4ec7ba299912bf999f15914c0a29125ffd is slow. > > >With best regards, PerfectionCat. > > >----- Original Message ----- >>From: Sergey Sharybin <[email protected]> >>To: PerfectionCat <[email protected]>; bf-blender developers >><[email protected]> >>Date: 2016/8/3, Wed 17:09 >>Subject: Re: [Bf-committers] Cycles CUDA Toolkit 8 transition >> >> >>Interesting. >> >> >>Can you test revision 6353ecb and the one prior to it to see if it's this >>revision caused the problem? >> >> >>On Wed, Aug 3, 2016 at 12:27 AM, PerfectionCat <[email protected]> >>wrote: >> >>Hi. >>> >>>blender which built using a source file at the time of 467e12514e60 in CUDA8 >>>has a shorter time required for rendering of BMW for around 20 seconds. >>> >>>SHA-1-2f5db2e45b7a8af51b15c45bb41f5dcb49ae9d4d is slow. >>>SHA-1-467e12514e60b4130cd0a33b59f53aa4cf7056b6 is fast. >>> >>>Windows 10 pro 64bits >>> >>>Intel i7 6700K 4.4GHz >>>NVIDIA GTX 1070 >>>MEMORY 16GB >>> >>> >>>With best regards, PerfectionCat. >>> >>> >>> >>> >>>----- Original Message ----- >>>>From: Sergey Sharybin <[email protected]> >>>>To: Blender Developers <[email protected]> >>>>Date: 2016/8/2, Tue 23:44 >>>>Subject: Re: [Bf-committers] Cycles CUDA Toolkit 8 transition >>>> >>>>Hey again, >>>> >>>>Spent majority of the day trying to solve the regression, without much >>>>success. Even simplest kernel needed for BMW scene is about 10% slower. >>>>This is mainly coming from bump nodes. Enabling all other features makes >>>>things even worse performance wise. >>>> >>>>I did some tweaks again to make sure all functions are inlined in the same >>>>manner by CUDA 8.0 as they used to be before. So now PTax output shows >>>>exactly same function, but for some reason spills are just higher with new >>>>toolkit and at the same time stack usage is reasonably slower. Not sure yet >>>>what's going on here and think we'd better leave this alone for until >>>>official toolkit is released. >>>> >>>>For the time being i've switched buildbots to use more complicated setup, >>>>using CUDA 7.5 for all kernels except sm_60 and sm_61 (new generation >>>>cards) and using new toolkit only for new kernels. >>>> >>>>So hopefully now all maxwell and lower crads have same performance as >>>>before. And yet users of new cards can have some degree of GPU rendering. >>>> >>>> >>>>On Mon, Aug 1, 2016 at 6:15 PM, Sergey Sharybin <[email protected]> >>>>wrote: >>>> >>>>> Hey everyone, >>>>> >>>>> In order to make Cycles officially support new Pascal cards (GTX 10x0) it >>>>> is crucial to use CUDA Toolkit 8. While it is still in the RC stage we >>>>> started looking into making it official one for Cycles. >>>>> >>>>> There is already some initial work done: >>>>> >>>>> - Tweaks are done to Cycles kernel to have same level of inlined functions >>>>> (new toolkit barely used inlined functions, which resulted in poor >>>>> performance on all cards) >>>>> - New toolkit was installed onto all release environments and buildbots. >>>>> >>>>> So on a positive side, next buildbot's builds will support Pascal cards, >>>>> yay! :) >>>>> >>>>> But unfortunately, while i've managed to keep Kepler cards (GTX760) same >>>>> performance as before, we had a report from Jens in IRC about Maxwell >>>>> cards >>>>> having a poor performance yet again (in his case, up to 40% worse). >>>>> >>>>> This is really unacceptable, we'll keep working on solution for this >>>>> issue. It might take some time, so just be aware and please be patient :) >>>>> >>>>> I will keep posted here with our progress. >>>>> >>>>> -- >>>>> With best regards, Sergey Sharybin >>>>> >>>> >>>> >>>> >>>>-- >>>>With best regards, Sergey Sharybin >>> >>>>_______________________________________________ >>>>Bf-committers mailing list >>>>[email protected] >>>>https://lists.blender.org/mailman/listinfo/bf-committers >>>> >>>> >>>> >>>_______________________________________________ >>>Bf-committers mailing list >>>[email protected] >>>https://lists.blender.org/mailman/listinfo/bf-committers >>> >> >> >> >>-- >> >>With best regards, Sergey Sharybin >> >> >_______________________________________________ >Bf-committers mailing list >[email protected] >https://lists.blender.org/mailman/listinfo/bf-committers > > > _______________________________________________ Bf-committers mailing list [email protected] https://lists.blender.org/mailman/listinfo/bf-committers
