Do you any any good tutorials or online trainings on programming in CUDA ?
The books: “CUDA by example” and “Programming Massively Parallel Processors: A Hands-on Approach”
Nvidia webinars
A good course Course Websites | The Grainger College of Engineering | UIUC
If you look on ggole cuda totorials there are many toturials, but I suggest to look only over the ones from 2011.