"Half past one" is a Maxim "Malefic" Tkachenko's animation adapted for SLG2 by Michael "neo2068" Klemm.
SmallLuxGPU is a LuxRays (http://www.luxrender.net/wiki/index.php?title=LuxRays) demo and a LuxRender (http://www.luxrender.net) "proof of concept".
The video was recorded on a i7 860 + 2xHD5870 + HD5850 at the resolution of 1280x600.
SmallLuxGPU and LuxRays are released under GPL license and the sources are available at http://src.luxrender.net/luxrays/. Precompiled binaries are available on LuxRender forums (check the section dedicated to GPU acceleration).
SmallLuxGPU 2.0 renderer is 100% written in OpenCL (http://www.khronos.org/opencl/).