[LLM] support fix seq len and cmd run service

[ltd0924]

Before submitting

• Lint code. If there are lint issues, please format the code first.

# Install and register `pre-commit` in the project folder
pip install pre-commit && pre-commit install

# Process previous code files separately
pre-commit run --file XXXX.py

• Add test cases into tests folder. If there are codecov issues, please add tests cases first.

PR types

PR changes

Description

[paddle-bot]

Thanks for your contribution!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.48%. Comparing base (a381674) to head (fd2bdfe).
Report is 311 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #10004      +/-   ##
===========================================
- Coverage    50.48%   50.48%   -0.01%     
===========================================
  Files          755      755              
  Lines       121257   121257              
===========================================
- Hits         61215    61213       -2     
- Misses       60042    60044       +2     

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