When working on RED 8K RAW on Davinci Resolve
Since it takes a lot of effort on Resolve to process 8K RAW, if you set the display GPU to compute, it will come back with "GPU is out of memory" alert even if you have multiple GPU connected.
So, keep one GPU for display only, let the others do the compute.
Right now I have:
nVidia Titan-X for the display
nVidia Titan RTX x2 for compute