ljm2020

sadly, that's the limitation of colab, it's free, but limited... that's why I write that sync function to copy all the data generated in VM to google drive (work directly...

I never get longer than 4 hours I think, and it require me constantly doing something/anything in the colab environment, it shuts you down automatically if you have no action...

google does not want anybody using colab for mining purpose, so guess you have to do on your local environment:)