It takes a second or so to run the first time.
Linux-x86_64
NVidia Driver 430.64
GeForce RTX 2070
torchvision               0.3.0           py37_cu10.0.130_1    pytorch installed with conda as part of fastai install.
Cuda compilation tools, release 10.1, V10.1.105
Having trouble verifying version of CudNN