Cherry Pick T5 finetuning changes into 1.13
State: closed | Pull request: yes

…tch size refactoring (#5339)

* Initial refactor

Signed-off-by: MaximumEntropy <sandeep.subramanian.1@umontreal.ca>

* Resolve config before passing to load_from_checkpoint

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* Fixes for model parallel and nemo restore

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* Fixes for eval

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* Revert config changes

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* Refactor

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* Fix typo

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* Remove comments

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* Minor

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* Fix validation reconfiguration

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* Remove old comment

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* Fixes for test_ds

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