Add nvfp4_mse and nvfp4_local_hessian options to the ptq script.

[bkartal-dev]

What does this PR do?

Type of change: Bugfix

Add newly added quant configs to the example PTQ script.

Testing

I have locally run auto_quantize with these two quant_configs, and obtained successfully exported HF artifacts.

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Additional Information

Summary by CodeRabbit

• New Features

  • Added support for three new quantization formats: nvfp4_mse, nvfp4_local_hessian, and nvfp4_experts_only, expanding available export options when using auto-quantize.

• Bug Fixes / UX

  • Updated the invalid-quantization error message to include the newly accepted format identifiers.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

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Run ID: e636ad69-6bd3-46d0-b537-37cee9c55dc3

📥 Commits

Reviewing files that changed from the base of the PR and between 8278385 and f8ee452.

📒 Files selected for processing (2)

• examples/llm_ptq/hf_ptq.py
• examples/llm_ptq/scripts/huggingface_example.sh

🚧 Files skipped from review as they are similar to previous changes (2)

• examples/llm_ptq/scripts/huggingface_example.sh
• examples/llm_ptq/hf_ptq.py

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📝 Walkthrough

Walkthrough

Updated allowed quantization format lists: the Python auto-quantize whitelist now accepts nvfp4_mse and nvfp4_local_hessian, and the shell example expands its case whitelist to include nvfp4_mse, nvfp4_local_hessian, and nvfp4_experts_only.

Changes

Cohort / File(s)	Summary
Python quantization whitelist examples/llm_ptq/hf_ptq.py	Added nvfp4_mse and nvfp4_local_hessian to the qformat/qformat_list accepted by auto_quantize() so they pass the existing assertion and can be mapped into quantization_formats.
Shell example whitelist & message examples/llm_ptq/scripts/huggingface_example.sh	Extended the case $qformat in whitelist to include nvfp4_mse, nvfp4_local_hessian, and nvfp4_experts_only; updated the "Unknown quant argument" message to list the expanded set of valid options.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately summarizes the main changes: adding nvfp4_mse and nvfp4_local_hessian options to the ptq script, which matches the core modifications in both files.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Security Anti-Patterns	✅ Passed	The changes only add new quantization format keys and extend the script's qformat whitelist; no security issues introduced.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

⚔️ Resolve merge conflicts

• Resolve merge conflict in branch fix-example-script

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[Edwardf0t1]

Please fix the conflict.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.18%. Comparing base (714dbd2) to head (c50a346).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1113      +/-   ##
==========================================
+ Coverage   70.16%   70.18%   +0.02%     
==========================================
  Files         228      228              
  Lines       25952    25952              
==========================================
+ Hits        18208    18214       +6     
+ Misses       7744     7738       -6     

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[bkartal-dev]

merge conflict is resolved.