checkpoint loading from different topogies using new ckpt logic; dataloader init for grain#76
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maharajamihir wants to merge 4 commits intomainfrom
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checkpoint loading from different topogies using new ckpt logic; dataloader init for grain#76maharajamihir wants to merge 4 commits intomainfrom
maharajamihir wants to merge 4 commits intomainfrom
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…loader init for grain
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Pull Request Overview
This PR refactors checkpoint loading to use the new Orbax CheckpointManager with TrainState and introduces a Grain-based dataloader initialization helper.
- Swap out
PyTreeCheckpointerfor OrbaxCheckpointManagerand shape-only dummy state restoration - Add
checkpoint_stepandlam_co_trainflags toArgs - Extract dataloader setup into
_get_dataloader_iterator()using Grain’s iterator API
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Jul 15, 2025
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