[None][chore] local imports for AutoDeploy in serve and bench

[lucaslie]

Summary by CodeRabbit

• Refactor
  • Streamlined application initialization with improved dependency loading efficiency, resulting in faster startup times with no functional changes.

Description

avoid loading auto_deploy code by default in trtllm-serve and trtllm-bench to avoid affecting production-grade software path with pytorch backend

Test Coverage

PR Checklist

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[lucaslie]

/bot run

[coderabbitai]

📝 Walkthrough

Walkthrough

The changes defer importing AutoDeployLLM from module initialization to runtime, moving imports from top-level to local scope within conditional branches where the autodeploy backend is used. Public APIs and signatures remain unchanged.

Changes

Cohort / File(s)	Summary
Lazy import refactoring tensorrt_llm/bench/benchmark/__init__.py, tensorrt_llm/commands/serve.py	Moved AutoDeployLLM import from top-level to local import inside conditional branches—get_llm's _autodeploy branch and launch_server's backend check—deferring initialization until the autodeploy backend is actually used.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~5 minutes

• Both changes follow an identical pattern of moving conditional imports to defer module loading.
• No logic modifications or API changes.
• Straightforward refactoring with minimal risk of unintended side effects.

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	PR description contains the required sections (Description, Test Coverage, PR Checklist) but critical sections are incomplete or missing detailed information.	Complete the Test Coverage section by listing specific tests that validate the lazy import changes. Add a proper PR title following the template format [ticket][type] Summary. Clarify the rationale for avoiding AutoDeploy code loading by default.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: moving AutoDeploy imports to be local imports in serve.py and bench/init.py for deferred loading.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

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• Create PR with unit tests
• Post copyable unit tests in a comment

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[tensorrt-cicd]

PR_Github #24691 [ run ] triggered by Bot. Commit: cbfacbd

[tensorrt-cicd]

PR_Github #24691 [ run ] completed with state SUCCESS. Commit: cbfacbd
/LLM/main/L0_MergeRequest_PR pipeline #18646 completed with status: 'FAILURE'

[lucaslie]

/bot run

[tensorrt-cicd]

PR_Github #24702 [ run ] triggered by Bot. Commit: cbfacbd

[tensorrt-cicd]

PR_Github #24702 [ run ] completed with state FAILURE. Commit: cbfacbd
/LLM/main/L0_MergeRequest_PR pipeline #18656 completed with status: 'FAILURE'

[lucaslie]

/bot run

[tensorrt-cicd]

PR_Github #24773 [ run ] triggered by Bot. Commit: cbfacbd

[tensorrt-cicd]

PR_Github #24773 [ run ] completed with state SUCCESS. Commit: cbfacbd
/LLM/main/L0_MergeRequest_PR pipeline #18690 completed with status: 'SUCCESS'