# version 8 이전.
cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2
# version 8 이후.
cat /usr/local/cuda/include/cudnn_version.h | grep CUDNN_MAJOR -A 2# version 8 이전.
cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2
# version 8 이후.
cat /usr/local/cuda/include/cudnn_version.h | grep CUDNN_MAJOR -A 2