2.79 / 980ti x 2 / OSX 10.11.6
This is very weird. It is using about 1800 GB or so out of 6GB available on any of the 2 cards.
To be honest the cuda error is always present at a certain point. No one could explain this ongoing problem for Blender. Are they ever going to fix this issue?
CUDA error: Out of memory in cuMemAlloc(&device_pointer, size), line 568