Vray texture memory management

[nookie]

What are the best strategies for keeping ram usage down when using multiple 8k textures when rendering with vray ? It seems like tiles exr's actually take up more memory than non tiles ones and using 8 or so 8k exr textures makes the render engine want about 11 gigs of ram. Does anyone have any tips ? Our render nodes only have 6 gigs of ram each. Also, mental ray seems to require less ram for the same test scene.

What is the best way to test if tiles exr's are working ? We are using the utility that came with vray generate them.

[Morbid Angel]

the tile exr is a dynamic object so it relies on your RAM limit in the dynamic memory I believe. Also there is several way to create tiled exrs, with different tile sizes, you may experiment with those numbers as they affect render time/speed/ram directly. Whenever we had to have a lot of 8k textures, we just had to make separate resolutions like 8/4/2/1 ks and switch them depending on the distance from objects, its not ideal but at that time the tile exr was not yet implemented to what it is now.