I've been struggling a little with Cycles and my GeForce GTX 750 graphic card. Most of the time it works well, but when I try to work with scenes that have custom shaders (like a skin shader with multiple textures, including for displacement), I get an error, both on the viewport and at rendering:
Cancel | CUDA error: Out of memory in cuLaunchKernel(cuPathTrace, xblocks, yblocks, 1, xthreads, ythreads, 1, 0, 0, args, 0)
Or something like that. Here's a screenshot so you can check it out:
I'm using a PC and Windows 7, with 8Gb of RAM. I can't render this scene with GPU, but using CPU, it renders ok.
My question is: What is causing this issue? I have the latest drivers installed for my graphic card, so I have no idea what this is.