OpenCL 2.0 supports this feature, and so does the current AMD hardware in theory. However there are no drivers yet and I'm afraid it's going to be at least an y

OpenCL 2.0 supports this feature, and so does the current AMD hardware in theory. However there are no drivers yet and I'm afraid it's going to be at least an year until AMD manages to push out working OpenCL 2.0 stack. Nvidia is just on a completely different league with driver support. And they could implement OpenCL 2.0 based on current CUDA if they wanted, but for rather obvious reasons they would rather not.