Blender 2.81's render device set to GPU doesn't show the viewpport render So I was tweaking my node setup in the world background when suddenly everything turned grey.



I tried to undo the steps but nothing changed. A bit later, I switched my rendering device to CPU and it worked like normal, but a bit slower.



I checked my preferences and everything seemed fine to me.



When I hit render with GPU device, it says "CUDA error at cuCtxCreate: Launch failed"



I checked my other blender files and the problem persisted.

I would search a bit deeper on the web normally, but I have to finish a couple of VFX shots for next week so I want to everything to work as fast as possible.
Ok so it seems that restarting Blender resolves the problem.
However I know that this solution does not explain the cause, so if someone knows what it is or how to resolve it, go ahead