GPU memory usage creeping up then fails

[jknott]

Disclaimer: I'm new with VrayRT and GPU rendering, but I've used Adv for a few years. I have a new 1080Ti and I'm rendering a fairly simple animation of an HDRI environment rotating around an object, just to get a sense of how it looks from all angles. The problem is that with each new frame the GPU memory usage creeps up and then the render fails once the GPU memory is maxed out. What might be causing the memory creep?

[matanov]

What's your V-Ray version? Can you send me a simple scene that represents the problem?

[jknott]

Version is 3.60.04. I've attached a file. The problem seems directly related to the HDRI file in the environment map. Seems like It can be any HDRI file, so just link one of your own into the map in the Material Editor. I'm rendering a sequence and then watching the GPU memory usage in GPU-Z. Every frame it goes up by 100MB+/-. More or less depending on the size of the HDRI used.

Maybe I'm doing something incorrectly with it?

[matanov]

This is already fixed in V-Ray Next. You can workaround it with a Dome VRayLight and if this doesn't suite you, we can think of something else.

[jknott]

I switched to the Next GPU beta 3 and the memory problem did go away. However, now I have fireflies in my render (see attached image).

[matanov]

I can try to guess but that may take a while. Can you send me the scene?