What do you mean is not working? What resources are you using for your attempt? On a side note, I am curious how are you planning to use Processing with CUDA. Could you elaborate please? If I were you, my first effort would be to find available current java-Cuda resources. If you get those resources working, you could bring them to Processing. Also, have you tried contacting the owner of the libraries that you are trying to use? Maybe they can provide you some feedback on the code status.
Kf