illumination map problem

[madwands]

Hi there!

I have a problem with illumination map. Can I force Fume to use one frame of illumination map saved on disk? and not calculating it each frame?

My case is a huge simulated "nebula like" cloud, with fxd cache up to 4Gb. Calculating illumination map takes a lot of time, and lighting don't change . I want to render a space flight. around the cloud. Copying the calculated illumination map is not a solve as I have 800 frames and ~10 such clouds in my scene would make 2TB of cache files

Thanks in advance!
Artur