LuxrenderGPU is going to be the very last step in the process of introducing OpenCL support in Luxrender. It is intended as a final prototype before the start of work on Luxrender v0.8 where full OpenCL support is planed. LuxrenderGPU includes the first prototype LuxRays library too.
The Luxrender Developer Team is proud to present today the very first rendering of LuxrenderGPU. While this represent an important milestone in the process to introduce OpenCL support in Luxrender, we are still far from having a tool usable from an end-user and we are still talking of a prototype/experiment. This mean you can not expect to see a binary package of LuxrenderGPU available soon (however the sources are available in the Luxrender source repository).
First results on a high-end system
Luxrender Classic Vs LuxrenderGPU on a i7 860 + ATI HD 5870: 57K Samples/sec Vs 202K Samples/sec
First results on a low-end system
Luxrender Classic Vs LuxrenderGPU on a Q6600 + NVIDIA 240GT: 31K Samples/sec Vs 59K Samples/sec
CPU + GPU + Network Rendering
Thanks to the approach used by LuxrenderGPU (i.e. GPU used only for ray intersections), it has a large list of features inherited from LuxrenderClassic: all materials/textures, all kind of light sources, etc. are supported even from the very first rendering. Including the support for network rendering:

