The Core PhysX SDK v3.3.2 was released on Friday and one of its major changes is GPU acceleration support under Linux. For those out of the loop, PhysX is a proprietary physics engine middle-ware used by many game engines from Unreal Engine 3+ to Unity.
An Unreal Engine 4 demo with PhysX.
NVIDIA has offered GPU-based PhysX acceleration via their graphics cards after NVIDIA acquired AGEIA back in 2008. PhysX on the GPU has been available to Windows users with any CUDA-ready graphics card -- the GeForce 8 series and later -- while with the latest PhysX SDK update it's now supported under Linux. The PhysX SDK was previously out for Linux but limited to running on the CPU.
PhysX GPU support on Linux doesn't come as a huge surprise given since earlier this year we've been expecting it to come as part of NVIDIA GameWorks on Linux. The updated NVIDA PhysX SDK for Linux can be downloaded from developer.nvidia.com.