releasing `2.5.5` [rebase & merge]#21152

Merged

lantiga merged 40 commits intorelease/stablefrom

releasing/2.5.5

Sep 5, 2025

Commits on Sep 3, 2025

chlog: new section
Borda
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docs: simplify version table (#21123)
Borda
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Adding test for legacy checkpoint created with 2.5.4 (#21128)

pl-ghost
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Borda
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resolve failing tests with pt-2.1 (#21130)
Borda
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fix(callbacks): Defer step/time-triggered ModelCheckpoint saves until validation metrics are available (#21106)

littlebullGit
and
Borda
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build(deps): bump google-github-actions/auth from 2 to 3 (#21139)

dependabot[bot]
authored and
Borda
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build(deps): bump google-github-actions/setup-gcloud from 2 to 3 (#21140)

dependabot[bot]
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Borda
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build(deps): update ipython[notebook] requirement from <9.5.0 to <9.6.0 in /requirements (#21134)

dependabot[bot]
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Borda
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build(deps): bump coverage from 7.10.5 to 7.10.6 in /requirements (#21135)

dependabot[bot]
and
Borda
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build(deps): bump pytest-rerunfailures from 15.1 to 16.0 in /requirements (#21137)

dependabot[bot]
and
Borda
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build(deps): update onnx requirement from <1.19.0,>1.12.0 to >1.12.0,<1.20.0 in /requirements (#21136)

dependabot[bot]
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Borda
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build(deps): update typing-extensions requirement from <4.15.0,>4.5.0 to >4.5.0,<4.16.0 in /requirements (#21133)

dependabot[bot]
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Borda
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Simplify workflow matrix (#21132)

matsumotosan
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Borda
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Docs on hook call order (#21120)

SkafteNicki
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Borda
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Add missing device id for pytorch 2.8 (#21105)

committed
Simplify Fabric tests workflow matrix (#21142)

matsumotosan
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Borda
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build(deps): update ipython[all] requirement from <8.19.0 to <9.0.0 in /requirements (#21138)

dependabot[bot]
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Borda
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docs: update `optimizer_zero_grad` order, and the backward pass. (#21144)

GdoongMathew
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Borda
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docs: move `on_fit_end` hook to `teardown` stage. (#21143)

authored and
Borda
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Fix TQDM progress bar showing the wrong total when using a finite and iterable dataloader (#21147)

SkafteNicki
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Borda
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Warning on eval module (#21146)

committed
Fix workflow matrix reference (#21145)

matsumotosan
and
Borda
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Fix `LightningCLI` not using `ckpt_path` hyperparameters to instantiate classes (#21116)

mauvilsa
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Borda
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Add support for deepspeeds `exclude_frozen_parameters` (#21060)

SkafteNicki
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Borda
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Impr docs on batch sizes and limits in distributed (#21070)

SkafteNicki
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Borda
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Fix: `no_grad` with AMP bug (#20921)

committed
docs: update `setup` and `restore`. (#21149)

GdoongMathew
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Borda
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docs: warning don’t use `torch.profiler.profile` context manager around `Trainer` methods (#20864)

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`uv` for pytorch tests (#21148)

matsumotosan
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Borda
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docs: clarify `DeviceStatsMonitor` logged metrics (#20895)

committed
chore: remove redundant words (#21151)

slicesequal
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Borda
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tests: fix missing import
Borda
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fix links in DeepSpeed docs (#21153)

marios1861
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Borda
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`uv` for tests-fabric (#21155)

matsumotosan
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Borda
committed

Commits on Sep 5, 2025

releasing `2.5.5`
Borda
committed