Cycles Performance


(Alphisto) #21

Implementing something like UHD cache would be great but I think it should be done with the GPU in mind even if it means couple of years for it to be done… it makes everything so much more complicated to implement but doesn’t cause inconsistency. Cycles is more GPU than CPU oriented and cache would be a big step comparable to denoiser.

Are you sure? I think CPUs got a much bigger boost in the past 1 year than GPUs.

It was true from like 2012-2017 when Intel was kind of sitting on the throne and getting fat.

But recently you must have noticed that AMD pushed the limits and suddenly the race is on.


(marcoG_ita) #22

I actually agree, I’ve just seen nvidia keynote summary, really disappointed about the 2080ti being just 11gb and crazy prices…new Quadro series are very interesting (up to 96 gb with Nvlink) but prices are not for everyone certainly.


(razin) #23

the 2080 also support Nvlink


(yolao) #25

I hope Cycles will have something like Corona UHD cache, is really very fast and i personally have not seen issues with flickering or anything like that when rendering animations.

And talking about GI Cache in the GPU, i believe Redshift does that, right?, Brute Force GI together with Irradiance Point Cloud and Irradiance Cache…


(rawalanche) #26

Yes, Redshift, Corona and V-Ray all have caching of secondary GI bounces and none of them flicker in animated scenes these days.


(Kramon) #27

it is not even about speed it self. but very hard sceens where source of light is small and there is plenty of reflections are simply impossible to render in cycles compared to corona. and corona renders them just like walk in the park. I was beta tester of corona… back in time… and i am blender user since 2.4x and sorry to say… but cycles yes is mostly problem free because of it’s simplicy but it is so damn slow once shit get’s complex that it is just sad. not even mentioning fact that on very complex sceens cycles can’t even render and just you get dark image or never ending noise.

cache GI. etc stuff have been for years in render engines. used in productions without a problem… and when somebody say flickering jizz that is thing of past… Acctualy if we talk flickering the got damn denoiser that is in cycles is flickering like crazy! and is add’ed. It is going to be fixed in 2.8 as the denoiseing will be pushed to compositor so u can denoise whole sequence and make it smooth. but so far… it is how it is…

cycles is slow.