Trying to get better render times.

[Neelu]

So my love-hate relationship with vray begins.

It took 5 hours to calculate the image IR+LC map at 800X600.

Then I saved and reused for 1600X1200 image.

It took 8 hours after that!

My system is an IBM, Intel Xeon 3.07 Ghz, 2.00 GB of RAM.

wildcat graphics card.

so I really don't know why the render times are so horrible.

I don't have the resources for a render farm just yet.

Or maybe I am not using the settings well:o

Also, the image sampler was not working out too well.

I used Adaptive QMC Min:2 Max:5

 

My IR map was calculated on medium

and LC with 1000 subdivs

[ihabkal]

a dual dual core system will cut the time to 25% of that.

[kippu]

vray render times depends on materials , number of lights , type of shadows , polygons so these settings tell us only 25% of the problem .... rest can be cleared by some images if you can post

[Arnold Sher]

...that sounds way too long, although difficult to comment without seeing the actual seen. Would suggest to post your linear drawing with your Vray settings so we can see what we can do for you

[Neelu]

Thanks!

 

Here is what I have.

[imgumbydammit]

New to vray so forgive me if I'm wrong in assuming it may help or is even a given but are you using proxies for all the tables and chairs ????

 

Steve

[Ricardo Eloy]

The only 2 things I see here are:

1- a huge number of lights

2- a huge amount of glossy refelctions

Besides that, probably a very high poly-count, but you probably can't escape that. Anyway, one thing I do that seems to work is to leave all glossiness set to 1 while calculating the irr map. I only set them properly for the final render. Hope it helps.

[kippu]

for that resolution ... given so many glossy surfaces... this time is good enough....

 

you could go to adaptive subdivision -1, 2 AA to get it down a bit and also reduce your qmc sampler till you can see noise

[jophus14]

The chairs look like they are floating.

[Arnold Sher]

stay away from vray lights, all they do is increase your rendering time. Use photometric lights with shadow map and your timing will drop substantially. Also you have an opportunity to select a specific light tfor your interior as opposed to vray light which is rather limiting..

[Fran]

What Arnold said. In some situations a Vray light is the better choice, but not when there are so many as in this case.

[Clifton Santiago]

2 things I notice: lots of glossy reflections as has already been noted. If you are rendering stills, be sure and check "Use interpolation" under the reflection part of your vray material. This will speed things up because it is using an approximate method to calculate glossies rather than brute force.

 

And second, it doesn't look like you are using vray proxies, which is good in your case. Vray proxy meshes will often double your render time. Only use them if you are running out of memory.

[Neelu]

Hi all,

 

Just to let you know,

 

I turned off glossies while calculating IR and LC maps, so that saved times considerably. It took 1 hour at 800X600.

 

The render at 1600X1200, after turning on glossies,and still using vray lights took 8 hours though.

 

I'll look into that dual dual core!

 

Thanks for all your help.