Feedback whilst resuming
# 🚀 Feature request

Add some sort of progress bar during resumption of training from a checkpoint

## Motivation

I resumed training from a checkpoint mid-way through a 100 Epoch training. The progress bar sat on zero for quite some time, and I could see CPU activity but no GPU's were active. Eventually the progress bar jumped to 50% and training resumed - I assume it's doing some sort of initialisation.

It would be nice if there were some indication that some progress is being made as it's not obvious what's occuring


This has been fixed by #11324. If you use a source install, you will be able to use (or in this case see) this feature :-)