OpenCV compiled with CUDA

Referred to this Install OpenCV 4.5 on Jetson Nano - Q-engineering
I can compile OpenCV on my Jetson with CUDA (i can check this with jtop). Please tell me, how can I see benefits of this?

certain OpenCV functions may run faster, when using the cuda version, as compared to the non-cuda version. You can find plenty of reports of counterexamples, however.

Sorry, I don’t have any examples for you and this particular forum is not focused either on Jetson or OpenCV.