But what does “Asynchronous Fine-Grain Compute” even mean?
In layman terms, what this means is that the GPU can directly support the CPU in performing compute tasks when there are free resources that would normally remain unused in a traditional system with separate CPU and GPU memory. If you have a PC and you like to benchmark your video memory usage while you game, you probably noticed that there are plenty times in which way less than 100% of the available resources are being used, and this system makes sure that those resources are put to good use, while still handling the graphics commands at the same time (asynchronous).
One of the most interesting yet obscure parts of the presentation was exactly the examples brought by Cerny on what those applications to be run by the GPU could be. He mentioned ray casting for audio, decompression, physics simulation, collision detection and world simulation.