Fix decoding with ngpu-lm when training (#13994)

[hoangtran9122]

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What does this PR do ?

Fix illegal CUDA memory error when evaluating using the decoding methods with NGPU-LM while training ASR models.

Collection: asr

Changelog

• Add WithOptionalCudaGraphs to the new decoding classes with ngpu-lm and add the required methods to enable/disable CUDA graph while training.

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Additional Information

• Related to Evaluating with NGPU-LM failed while training. #13994

[github-actions]

This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days.

[ahmadki]

@nithinraok The PR looks good, can you take a look if this is something we want to merge ?

@hoangtran9122: Do you mind signing the commit and fixing the linting errors ?

[artbataev]

@hoangtran9122 please update manually to the latest main branch (to fix "isort and black formatting") and sign off the commit

[artbataev]

LGTM, thank you!
Please fix the issues with CI.

[hoangtran9122]

Yes sure, I'll sign fix it

[hoangtran9122]

I think have some difficulties to set the NEMO_REFORMAT_TOKEN for the commit @artbataev

[artbataev]

@hoangtran9122 The problem is with the PR permissions. After reformatting the code, the changes should be pushed back to your (PR) branch, but you disallowed edits.

There are 2 options how to fix it:

1. allow edits by maintainers (in PR settings - usually enabled by default when you create the PR) https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/allowing-changes-to-a-pull-request-branch-created-from-a-fork#enabling-repository-maintainer-permissions-on-existing-pull-requests

2. Install isort and black from requirements_test.txt, reformat each file manually (black . will reformat nothing, need to explicitly pass each file), then push to your branch ("isort & black" task will reformat nothing - no need to push changes)