vray stability with massive scenes

[sketchbook]

Hi all.

anyone rendered a scene with millions if poly's?

i have never been able to render my big scenes in c4d, i get OOM errors, so i am wondering if vray fixes this issue?

thanks

[vesale]

hi, with fluffy we had been able to render an approximatly 5 millions poly scene, so it might not be that problematic, netherless it imply to optimise the scene a bit, check your hn for exemple, they might not need to be at 2 and 3 subdivision for example, and if it doesnt render you can still try to render in batch ( to avoid the double ram scene charging of cinema ) by opening cinema and selecting your scene to batch


the other option is to wait for the 64 bit version :roll:

[stefan]

i will soon show an rendering of a huge scyscaper and half the city of frankfurt with 2.7 mio polygons.

it renders in 38sek. with full GI, glas(millions og glas pannels), metals etc.
vray is very good on high polycount i found:-)

cheers
stefan

[stefan]

p.s how big is big? more than 5mio?

for very huge scenes we will soon have the 64bit version too, then there isnt a limit at all.

cheers
stefan

[Fluffy]

Yes, even though Vesale and I managed to render big scenes (only 2 or 3 millions polys max rendered at once, on that 5 millions polys scene), Vray is still memory hungry, especially with geometry.
So optimize as much as possible, especially HNs, make use of the 3Gb switch on Windows, and render using commande line or batch.

[choppir]

I just want to render 1 of my scene's with 322000 poly's and everytime it crashes. It's only 640 x 480 and on very low quality....

I run a 3.4Ghz machine with 4Gig ram, but looks like it is too much to handle....

[Tong]

no. something wrong with scene.

[noseman]

no. something wrong with scene

that was gonna be my comment too.

do a checklist of the following:

1. are there any multipass layers in C4D selected? (it may cause crashes)
2. try and find what object in your scene created the crash
3. copy - paste the scene in a new file
4. do you have any rendersetting saved in your file? (it may cause crashes)

[shtl]

Yup. Materials or something else can crash Vray.
I went crash with no material scene but very bad meshes (with lotof inverted polys) of 7 million+ more polys.
Crash with ±800,000 polys scene with lotof textures that ran well with AR, but didn't yet optimize the 600 materials (scenography for exposition).

Ran without any trouble scene of 3 millions polys (but noob style, so rendered very slowly :oops: ).

At the moment rendering 700.000 polys scene with GI and AO about 10min with a quad xeon. :D

So indeed it looks like the polycount matter as much as with C4D (32 bit)?

EDIT:
yup !
Scenes from r8.5 imported direct in r10 look like cause of crash. Must be something...
Like stated a copypaste in new scene worked well for me too.

[stefan]

well it is much about knowing the engine.

i have a 2.7 mio poly scene here. when i started it needed 6 min to render in 800x400px.

after 5 minutes of optimizing it renders in 38sek. full GI aith phycam physky refrections, glossy, water glas, bump etc....so vray is very very fast also woth high polycount scenes. we juts have to get into settings abit;-)

in print resolution 3500x1750 i got it to render in 3.5 minutes in the end.

vray of course is a highend thing and needs a bit of power and ram.
soon i hope we can give you also the 64bitversion. then you can render zig million poly scenes:-)

cheers
stefan

[sketchbook]

my scene is about 6.6 million poly's

[_mats_]

6.6 mp?

hmm I am pretty sure if you reduce geometry with polygon cruncher or any other app, there should not be visible loss, and get them to 4million or so at least just to render until 64bits.

Matt -

[stefan]

ok 6.6 i havent tested yet:-)
thats heavy, ok, what is it?

if you want you can send me it(or a download link and i can try optimizing it.
otherwise, yes the 64 bit helps for such things, hope we have it soon:-)

cheers
stefan

[sketchbook]

it's a retail store filled with apparel and shoes.

[Tong]

do you use mograph, instance?

[afternooncoffeeboy]

ive no problems so far with too mutch polygons but more with the amount of lights in my scene. today i finished the lightning of a scene at our company with about 1 sun, 10 spots, about 20 ies omnis...got a lot of memory errors...hope it rendered without crash overnight. i will see 2mo

[MikeS369]

i will soon show an rendering of a huge scyscaper and half the city of frankfurt with 2.7 mio polygons.

it renders in 38sek. with full GI, glas(millions og glas pannels), metals etc.
vray is very good on high polycount i found:-)

cheers
stefan

38 seconds! On how many computers?

I am fairly certain that scene would not render on my 6 cores in 38 seconds.

I sure would like to know your optimization settings.

[sketchbook]

do you use mograph, instance?

yes, i use mograph for merchandising the scenes. doesn't lower the polycount any however...

just the file size.

does anyone know if vray for c4d has as good of memory management as max? i am not a max person, but someone on my team has rendered massive scenes with some off memory mode where the renders are much slower but very stable.

thanks

[RenatoT]

Hello Sketchbook,

Vlado told me that in max there are the Proxy with optimized memory, here is not possible to do today.. but i'm sure that in the next update of vray we can have it.

But the bad is that cinema don't support the real instances of objects and in the vray side i must have a copy of vray scene in the cinema to allow some shaders, volumetrics effects work.

I think that the best and faster way is Vray 64bit and a lot memory.. :) because true instances can slow the rendering (just my tought).

The 64bit is planned soon.. :)

Cheers
Renato

[sketchbook]

thanks renato,

unfortunately i have to have this animated by the 15th.

i would move to a 64 bit version if i had it. i have enough memory that is for sure.

so at this point i am going to have to rebuild everything in max. pain in the butt but there is no other option i can think of

joe

[sketchbook]

Hmm

well i converted my store to vray, and it renders in sections, but not with everything turned on.

i was able to get down to 4.2 million poly's.

it gets through the (ncount) thing, and then just stops. no message of why it stops given.

i will try on my PPC quad and see if that works.

[sketchbook]

well, no luckon good old PPC. crashed c4d completely.

good news is that i found out that the animation is not due until the 15th of november. hehe. i was just a month off.

with that being said, can any developers here let me know if a 64 bit version will be available by the end of this month?

thanks!