How many users can share a GPU?

How many users can share a GPU?: Today’s Tech Preview release of XenApp 6.5 OpenGL GPU Sharing targets “second tier” users who need to view or edit large 3D models that can’t be satisfactorily delivered using CPU-based software rasterization. Since this technology directly leverages the GPU video driver it doesn’t suffer from the performance limitations of GPU virtualization implementations based on API Intercept, nor is it limited to older versions of DirectX and OpenGL. Tests are underway with NVIDIA's new GRID K2 card which offers 3072 CUDA cores and 8 GB of video RAM.