Quote - > Quote - does gpu-lux need an exporter of its own?

Not at all. The file format is the same. Just a different implementation of the render engine.

You could probably try it already.

At home (I am not there at the moment) I have a graphics card I think will work. It has 112 processors in it. !!!

The current file format of luxgpu is different, geometry is in ply format, attributes are in a.b.c=xxx form etc, so it won't work.

It may be better to wait until LuxRender incorporates the gpu engine code.