Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: sngan on 2014-10-29, 14:57:19

Title: perf.
Post by: sngan on 2014-10-29, 14:57:19

Hallo, i am currently comparing diff. pt in terms of perf. for different scenes.
it seems to me that corona is pretty slow (compared to f.e. octane/iray etc.).
are there any tricks to speed it up ?
all parameters/settings are simple to understand.

Title: Re: perf.
Post by: Juraj on 2014-10-29, 15:34:03

Can you post your comparisons ? It might start shitstorm but it's always fun :- )

I could believe you're able to get faster results with Octane if you have (few) fast GPUs, but iRay ? The slowest engine of the planet ?
When I and friend (Lasse Rode) did comparisons, iRay came extremely slow. To me it was far slower than Maxwell in CPU mode. GPU mode could not salvage it.
The only studio I know who use it in production (Delta tracing) claim rendering time for hi-res finals to be few hours using 6+(!!) Teslas20xx, so like 580GTX in performance regard or something close to that. That's not what I would call fast...
But I like the results.

What's different "pt" method ? What and why are you changing ?

Tricks...there are no tricks, that's the benefit of Corona, there are no secret settings you need to discover. Just abide to proper rules that are renderer-agnostic.

Title: Re: perf.
Post by: maru on 2014-10-29, 15:47:55

The only "tricks" I can think of are light portals and proper albedo. Maybe Corona isn't "the fastest" but I think it's one of the best in terms of speed/quality ratio.

Title: Re: perf.
Post by: juang3d on 2014-10-29, 16:07:20

Agree, post some comparison samples here so we all can check them, also post your computer specs where you are doing the tests, beucase you may have great results with Octane if you use two GTX580 in a i7-920, but the same scene in the same pc with corona could be SLOOOOOW.

So what are your specs and scenes?

Cheers

Title: Re: perf.
Post by: Christa Noel on 2014-11-07, 09:35:33

Quote from: Juraj_Talcik on 2014-10-29, 15:34:03

Tricks...there are no tricks, that's the benefit of Corona, there are no secret settings you need to discover. Just abide to proper rules that are renderer-agnostic.

Big Agree with you Juraj, thats why Corona seems so shiny to me!!
Sngan, Speed is a conditional reference, when or how we need the production quality. just like maru said.
It's much better if you share the result pics. So, many of expert here that can help you review this case.