Move progress bar to account for sampling image first

[rockerBOO]

Progress bar was including sampling images (--sample_at_first) and causing some amount of the time to be off what would be expected.

[stepfunction83]

I know that tqdm() is called multiple times in the script for the progress bar to recreate it instead of calling progress_bar.reset(). Have you tried just resetting it instead of recreating it and seeing how that impacts its placement?

The placement on screen is very sensitive to the order that the tqdm() progress bar initializations are called. In #1900 for example, I replace the multiple calls with multiple uses of .reset() to fix the placement on screen.

[rockerBOO]

Could have it reset before it goes into training where I moved it. But I think it makes sense to put it where I have it right before the training. The progress is for the training steps so I think it makes sense to move it to capture this specifically.

The other things you improved on validation progress may allow for different results and reset may be more appropriate there.

Edit: This was highlighted when I was testing single epochs times and the sampling was happening so the estimate of time wasn't accurate to just the epoch of training.

[stepfunction83]

Oh, I see, you just pushed the first initialization down in the code. That makes perfect sense to me.