Use a larger batch size if that’s happening then to try to utilize the GPU more. But yes, it’s very rare I match Jeremy’s GPU with the T4 etc I can get on Colab
I faced a similar issue when running fast-ai on my PC running on linux 18.04. In my case, the gpu was not being used at all and the training time was about 27 mins total for lesson1 with resnet34. I have a GTX 1080
Here are the steps i followed to make it use my GPU,
1 - Make sure the driver for your GPU is installed, check this by going into your software & updates then clicking on the additional drivers tab. Select the latest version of the nvidia drivers.
Then reboot your computer, it will ask you to reboot using secure boot follow the process. reboot and check to see if it’s installed.
2. Now in your jupyter notebook run this,