Welcome to the forum - I about fell out of my chair when I saw your post! Myself and several others (not on the forum) been doing some very initial testing of CUDA on Winderz - would love to try it on VL. Not only because vector is fast and clean, but because it's lean and mean.
You mentioned photon mapping. Is this what you're interested in? Are you using CUDA in your work, or just for fun?
Hi Rai !
Cool that you've looked into this.
Here's a little clarification on openMP and openCL that seems correct:http://stackoverflow.com/questions/356328/opencl-does-it-play-well-with-openmp-can-i-connect-other-languages-to-it-etc
For things other than generic computing, GPU based systems are the wave of the future - I may be betting a business on that.