Is the CUDA API version and driver version always the same

Question

The CUDA version obtained from cuDriverGetVersion , and the API version from the macro CUDA_VERSION . Are they supposed to be always the same (assuming CUDA is correctly installed)?

Answer 1

The CUDA_VERSION macro tells you which version of the CUDA API you are compiling your code against. cuDriverGetVersion() will tell you the most recent version of CUDA that the driver you're running with supports. So no, they don't have to be the same. For example, an application that was compiled for CUDA 9.x will run perfectly fine with a driver that supports CUDA 10…