[D] What do you put in your lab notes?

I'm working my way through various tweaks to a ML pipeline, and I've started keeping short lab notes in a markdown file with just the time, a brief summary of changes, and my observations on training metrics or anything else interesting on a training run. I've also started copying a snapshot of the Python source code to the tensorboard directory, which has saved me a lot of headache.

I was wondering how other people keep lab notes, and especially what …

lab machinelearning markdown metrics notes pipeline summary through training