build(deps): bump pytorch-lightning from 1.6.5 to 1.8.0

[dependabot]

Bumps pytorch-lightning from 1.6.5 to 1.8.0.

Release notes

Sourced from pytorch-lightning's releases.

Lightning 1.8: Colossal-AI Strategy, Commands and Secrets for Apps, FSDP Improvements and More!

The core team is excited to announce the release of Lightning 1.8 ⚡

• Highlights
• Backward Incompatible Changes
• Deprecations
• Full Changelog
• Contributors

Lightning v1.8 is the culmination of work from 52 contributors who have worked on features, bug-fixes, and documentation for a total of over 550+ commits since v1.7.

Highlights

Colossal-AI

Colossal-AI focuses on improving efficiency when training large-scale AI models with billions of parameters. With the new Colossal-AI strategy in Lightning 1.8, you can train existing models like GPT-3 with up to half as many GPUs as usually needed. You can also train models up to twice as big with the same number of GPUs, saving you significant cost. Here is how you use it:

# Select the strategy with good defaults
trainer = Trainer(strategy="colossalai")
or tune parameters to your liking
from lightning.pytorch.strategies import ColossalAIStrategy
trainer = Trainer(strategy=ColossalAIStrategy(placement_policy="cpu", ...))

You can find Colossal-AI's benchmarks with Lightning on GPT-2 here.

Under the hood, Colossal-AI implements different parallelism algorithms that are especially interesting for the development of SOTA transformer models:

• Data Parallelism
• Pipeline Parallelism
• 1D, 2D, 2.5D, 3D Tensor Parallelism
• Sequence Parallelism
• Zero Redundancy Optimization

Learn how to install and use Colossal-AI effectively with Lightning here.

NOTE: This strategy is marked as experimental. Stay tuned for more updates in the future.

Secrets for Lightning Apps

Introducing encrypted secrets (#14612), a feature requested by Lightning App users 🎉!

... (truncated)

Commits

• 7ee0994 CI: Upload video artifacts from e2e tests (#14467)
• 93a6cff Lightning 1.8.0 release (#15435)
• 53e64cd install lite for mypy & docs (#15437)
• e9f9312 releasing RC2 (#15436)
• fb9dae8 ci: update install lite & cut pkg dependency (#14517)
• 4a4b7f3 [App][CI] Delete apps older than 1 hours CI account (#15238)
• b429da9 Update notebooks submodule head (#15432)
• 19df40d Allow force run app on cloud if loading locally errors (#15019)
• ec156ad [App] Remove --instance-types from cluster creation (#15314)
• 3e5e507 set default work version v1.12 (#15431)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #13.