Thank you! I am new to pytorch.
Yesterday I buy a new PC,and  I did’t install the CUDA manually, but  when I download the
pytorch cuda==10.1  with pip, I import it and test, it turns out the  cuda is available!  I don’t konw why!
I input the “nvcc -V”  in CMD but  it does’t work.
then, I installed the tensorflow-gpu in another pip venv, but it  does’t work
I have no idea about  if I have the CUDA!
I want to know how to confirm the CUDA is exist?
thanks!