What is it?

Lightning defers training and validation loop logic to you. It guarantees correct, modern best practices for the core training logic.

Why do I want to use lightning?

When starting a new project the last thing you want to do is recode a training loop, model loading/saving, distributed training, when to validate, etc… You’re likely to spend a long time ironing out all the bugs without even getting to the core of your research.

With lightning, you guarantee those parts of your code work so you can focus on what the meat of the research: Data and training, validation loop logic. Don’t worry about multiple gpus or speeding up your code, lightning will do that for you!

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https://github.com/williamFalcon/pytorch-lightning