Add Minitron depth pruning (layer dropping) to megatron_gpt_prune.py
State: closed | Pull request: yes
Labels: name: NLP

name: CI

name: Run CICD

# What does this PR do ?

- Add Minitron depth pruning (layer dropping) to `megatron_gpt_prune.py`
- Users no longer need to use 2 separate scripts for depth/width pruning. Previous depth pruning (layer dropping) script `megatron_gpt_drop_layers.py` will no longer be needed and can be deprecated in a later release

**Collection**: [Note which collection this PR will affect]

# Changelog 
- Add Minitron depth pruning (layer dropping) to `megatron_gpt_prune.py` to deprecate `megatron_gpt_drop_layers.py`

# Usage
* You can potentially add a usage example below

```python
# Add a code snippet demonstrating how to use this 
```

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  - [ ] Reviewer: Does the PR have correct import guards for all optional libraries?
  
**PR Type**:
- [x] New Feature
- [ ] Bugfix
- [ ] Documentation

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# Additional Information
* Related to # (issue)


[🤖]: Hi @kevalmorabia97 👋,

We wanted to let you know that a [CICD pipeline](https://github.com/NVIDIA/NeMo/actions/runs/12369936843) for this PR just finished successfully

So it might be time to merge this PR or get some approvals

I'm just a bot so I'll leave it you what to do next.

//cc @pablo-garay @ko3n1g

<!-- pylint-output-strict-mode-false -->

beep boop 🤖: 🙏 The following files have warnings. In case you are familiar with these, please try helping us to improve the code base.

---

Your code was analyzed with PyLint. The following annotations have been identified:

```
************* Module megatron_gpt_drop_layers
examples/nlp/language_modeling/megatron_gpt_drop_layers.py:16:0: C0301: Line too long (125/119) (line-too-long)
examples/nlp/language_modeling/megatron_gpt_drop_layers.py:76:0: C0301: Line too long (218/119) (line-too-long)
examples/nlp/language_modeling/megatron_gpt_drop_layers.py:167:0: C0301: Line too long (192/119) (line-too-long)
examples/nlp/language_modeling/megatron_gpt_drop_layers.py:54:0: C0116: Missing function or method docstring (missing-function-docstring)
examples/nlp/language_modeling/megatron_gpt_drop_layers.py:102:0: C0116: Missing function or method docstring (missing-function-docstring)
examples/nlp/language_modeling/megatron_gpt_drop_layers.py:116:0: C0116: Missing function or method docstring (missing-function-docstring)
examples/nlp/language_modeling/megatron_gpt_drop_layers.py:45:0: W0611: Unused open_dict imported from omegaconf (unused-import)

-----------------------------------
Your code has been rated at 9.47/10
```

---

Mitigation guide:

* Add sensible and useful docstrings to functions and methods
* For trivial methods like getter/setters, consider adding `# pylint: disable=C0116` inside the function itself
* To disable multiple functions/methods at once, put a `# pylint: disable=C0116` before the first and a `# pylint: enable=C0116` after the last.

By applying these rules, we reduce the occurance of this message in future.

Thank you for improving NeMo's documentation!

[🤖]: Hi @kevalmorabia97 👋,

We wanted to let you know that a [CICD pipeline](https://github.com/NVIDIA/NeMo/actions/runs/12398557060) for this PR just finished successfully

So it might be time to merge this PR or get some approvals

I'm just a bot so I'll leave it you what to do next.

//cc @pablo-garay @ko3n1g