I have a single Arnold floating license, jumping between a PC and an aging Mac Pro. I'm currently rendering an animation with R20 on the PC that will take around 12 hours to finish.
I also want to set up some textures and lighting on a different scene on the Mac Pro in R21. I'd like to use the IPR to facilitate this, and since I'm just setting up the scene it doesn't matter whether there's a watermark.
I know the license checks the license server (running on the Mac Pro) to allocate the license, but how exactly does that work during the long, 350-frame render on the PC? Is there a chance some of those frames could end up with a watermark if I happen to launch the IPR on the Mac Pro while the Render Queue is between frames (preparing clones in the scene, for instance, before the rendering actually starts)?