Hey, where can I find older version of CUDA documentation? I keep seeing only the latest documentation that is available at (https://docs.nvidia.com/cuda/cuda-driver-api/index.html)
NVIDIA doesn’t maintain full sets of HTML archives of older documentation in general (there are exceptions for a few document types, like the install guides).
To get a full set of documentation for an older CUDA version using NVIDIA-provided bits, you need to install that older CUDA version on a machine, and it will install a full set of documentation for that version also.
Of course if you google around you may find some other places (e.g. universites) that have put up older sets of documentation in publicly-accessible ways.