About 12 hours on a Tesla P100 (Google Cloud). To be honest I don’t have much other details as I was merely interested in sentiment classification and not the preliminary steps.
Anyways, here’s the link, the vocab is 30k. You can load the model directly in language_model_learner using the pretrained_fnames argument.
https://drive.google.com/open?id=1gkuY3Tz6LBmcehAnZ95jssV80CBQh7L1