Integrate `lightning_utilities`

[carmocca]

🚀 Feature

We have released https://github.com/Lightning-AI/utilities/ which contains multiple utilities that are shared across the codebase.

Motivation

Avoid protected imports Avoid duplicated code

Pitch

Go through the Flash codebase and see which duplications or protected imports we have

[carmocca]

Examples:

https://github.com/Lightning-AI/lightning-flash/blob/674232381ad9e984a256037749fa714fcfd1b627/flash/core/utilities/imports.py#L31-L75

https://github.com/Lightning-AI/lightning-flash/blob/674232381ad9e984a256037749fa714fcfd1b627/flash/core/utilities/apply_func.py#L34-L41

There should be DeprecationWarnings for utilities imported from PL that should start using lightning_utilities

[krshrimali]

Hi, @carmocca - Thank you! I am up for it, and it's only going to help us stay stable with respect to these utilities.

Is it possible that we can create a list of the sections of code that we can change, and take some help from our awesome community?

[carmocca]

The two I pointed out in my previous message are the only ones I could find. These are the ones we currently have in the utilities: https://github.com/Lightning-AI/utilities/tree/main/src/lightning_utilities/core

Should be a very easy PR, up for grabs!

[krshrimali]

The two I pointed out in my previous message are the only ones I could find. These are the ones we currently have in the utilities: https://github.com/Lightning-AI/utilities/tree/main/src/lightning_utilities/core

Should be a very easy PR, up for grabs!

Thanks! @uakarsh - Maybe you'll like to pick these up? Please let us know 🎉

[carmocca]

For examples of the PR in lightning: https://github.com/Lightning-AI/lightning/pull/14475, and https://github.com/Lightning-AI/lightning/pull/14537

[uakarsh]

Hi @carmocca @krshrimali, this definitely looks interesting. Can you give me some time, to explore about lightning_utility, and the existing codebase? I would surely get back to you.

[krshrimali]

Hi @carmocca @krshrimali, this definitely looks interesting. Can you give me some time, to explore about lightning_utility, and the existing codebase? I would surely get back to you.

Oh definitely, please take your time and let us know if you need any help! Thank you for your help! ❤️

[uakarsh]

HI, @krshrimali @carmocca, I would now start working on this task. So, far I have been going through the lightning_utilities repo, and what I could understand is that the repo's main idea is to centralize the steps involved before starting the code, i.e module availability, the checking the data structures required for different methods, and converting them to some other data structure. Although there were many other steps involved, these were something, I was able to understand.

So, my current plan is to g through the entire codebase of lightning flash, and replace all the methods that come under lightning_utilities with them.

Anything, which I missed or should be included while modifying the codebase?

[carmocca]

Nothing missed. That's perfect :)

[uakarsh]

Cool, would be starting today