[Bf-cycles] Cycles CPU speedup: Perlin noise
kartochka22 at yandex.ru
Sat Dec 28 04:12:11 CET 2013
В Пт, 27/12/2013 в 20:58 +0100, Thomas Dinges пишет:
> Hi everyone,
> today Svyatoslav Lockal send us a great patch which improves Perlin
> Noise calculation for Cycles CPU rendering, it's in master now.
> Some tests with the BMW scene resulted in a 12-15% render speedup.
> But I was curious to see how this behaves in a more production like
> environment, so I checked a file from the Open Movie Caminandes.
> The scene I used was 11a_comp.blend (New Hope scene) from Caminandes on
> an Ivy Bridge Quad Core (3.4 GHZ) on Linux.
> I rendered frame 500, with 1280x720 resolution, otherwise it's unmodified.
> Before: 01:06:22h
> New: 53:13min
> That is a speedup of about 20% (19.76%), which is a lot. I checked the
> node setups and the artists used the Noise Texture almost everywhere. :D
> Just wanted to share this, enjoy!
> Best regards,
> Bf-cycles mailing list
> Bf-cycles at blender.org
Great patch. In fact, I see perlin noise taking 90% of CPU time in
volume scenes with variable density (tat expected obviously, as woodcock
delta tracker or ray marsher call it evey small step while traversing
More information about the Bf-cycles