Crazy high Rendering Time Interior Vray!

[nanasba13]

Hi everyone,

I could use some feedback or advise if someone can help!

I am rendering an interior lobby for a client, it has no exterior lighting, because there are no windows, but about 22 VrayIES lights, about 5 vray plane lights and about 25-30 self illuminating vray lightmats. It is not a very big scene, something like 110 m2 and 3 meters high.

I left the pc last night at 23:00 to render one still image of (3240x2160) and it is 18:00 right now, in other words 18 hours and its still rendering. (its got like 1/5 left).

I am totally confused as to if this is normal render time for an interior like this, it seems a bit crazy to me! I would like to know your opinions or advise regarding this matter and if it is somewhat normal or am I doing something wrong, please help!

My specs are: Intel core i7 @ 2.67Ghz 8,00 GB RAM Win 7 x64, I am using 3d max 2010 + Vray 1,5!

Thank you in advance.

P.s. I've attached a screenshot of the rendering as it is now.

[Jonathan Sanchez]

depends on your settings.. AA/Subdivisions/GI settings ect ect. I see you have a lot of fuzzy reflects, they tend to take long to render. I bet those chandeliers also took a long time, particularly if they are transparent crystals. That being said, if your render settings are too high, it can take that long. Usually you can lower some of the settings though to bring your render time down w/out sacrificing too much quality.

[nanasba13]

Hey Jon,

Thanks for the quick reply as I actually have a deadline for tomorrow afternoon for this still and one more from the other side!

don't know what I'm going to do, thought about Rebus renderfarm but I installed the software and it keeps giving me an error that I have keys in my scene but curve editor and dope sheet can't find any, anyway got carried away there!

I don't really remember the exact settings I've used, cause its still rendering, but yeah the chandeliers especially took very long!

Could you tell me a bit more about the fuzzy reflects, and or anything else you can think of so that maybe I can make it by tomorrow even with a little less quality, as long as I can present it.

Sorry about the blabbing but I'm a bit stressed out!

Thanks!

[Jonathan Sanchez]

sure thing.. i was in the same situation myself yesterday with a render that took 14 hours so I gave up and went to rebus.. but they r expensive and not too good for single image renderings. While rendering on the RebusFarm, one of their computers got hung for over an hour all the while still charging me. Finally wrote to them telling them of prob, and they fixed it, and removed the charge for the time wasted. Anyways, single image ended up costing me like 80 euros or so which I ended up not taking (lost my deposit) cuz I thought it's too expensive for a single image. If I were you, I'd just let the render finish, should finish today I think and work overnight doing post work, than with time tomorrow, tweak the settings and learn what settings make render quicker/slower.

 

P.S. I ended up tweaking my settings and brought down render time to a more reasonable 5 hours, with very little quality lost.

Edited December 1, 2010 by sancheuz

[nanasba13]

Thanks friend,

actually its just finishing now.

That's exactly what I'm going to do, all night! The thing is the client needs two more stills, so that's a problem, anyway I'll see what I can do, found a soft that re-sizes images and keeps the same quality, going to check that out as well. By the way, if you could send me some settings you did to reduce the time that would be great, or not, it's okay. Anyway, will be posting the image after post work and giving it to the client so hope you comment.

Thanks again and wish me luck!

 

P.s. what's the time difference there, just wondering, it's now 21:45 here in Greece.

Edited December 1, 2010 by nanasba13

[Jonathan Sanchez]

Hey nanasba... here in Miami, Fl it's currently 16:38 at the time i wrote this message. As to my setting, I reduced the subdivison samples in some of the materials, the AA samples, the light cache samples, and the overall resolution of the image, down to 3000 X 2000something. I look forward to seeing your image.. and good luck!

[3dmagician]

try 2 play with reflection setting

[jcaddy]

A few obvious things with your scene.

 

"but about 22 VrayIES lights, about 5 vray plane lights and about 25-30 self illuminating vray lightmats"

*This is a big problem because you've also got glossy reflections on just about every material in your scene. Use standard spots instead of IES when possible and just paint the IES patterns in if this is a still. If it's an animation, only use the IES lights against the walls and use standard lights instead of vray plane lights in the center of the space.

 

* It looks like everything in your scene is reflecting........this is probably your biggest culprit next to the amount of VRay lights you have. Turn off reflections on the objects that are small and you don't necessarily see any dramatic reflection in the scene. For instance, if you've got tea pots and flower pedals that are reflecting the scene you can probably get away with turning reflections off on those all together and you'll notice your buckets don't get stuck in locations you wouldn't have expected.

Edited April 25, 2012 by jcaddy