[Bf-cycles] CUDA performance improvement commits / Blender 2.78a release

[Brecht Van Lommel]

Thanks! I just fixed the regression basically, and any significant
optimizations are likely from improvements in the CUDA 8.0 compiler,
which were previously being drowned out. Note that master has
optimizations by Lukas and Sergey too.

There will be a 2.78a release for various important bugfixes, and I
expect this fix would be included with that.


On Sat, Oct 8, 2016 at 5:27 AM,  <db4tech at yahoo.co.uk> wrote:
> Thank you Brecht for your recent CUDA 8.0 performance commits.
>
> Even though not currently using CUDA 8.0, there's a great boost in
> performance (now slightly faster than 2.77a).
>
> In case helpful, comparison of quick renders (only 10 samples) from a fairly
> complex scene presently working on.
>
> Ubuntu MATE 16.04.1 64-bit
> GTX 580m
>
> 2.77a
> 01:08.03
>
> 2.78
> 01:18.15
>
> 2.78.1 (ec6b593)
> 01:07.64
>
> Due to performance improvements, will there be a Blender 2.78a release?
>
> In closing, I would like to take this opportunity to thank all Cycles
> developers, especially so for the amazing 2.78 GPGPU memory usage
> optimisations while using multiple GPUs.
>
> David
>
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