[https://nvbugs/5769890][fix] Import get_free_port.

[yuxianq]

Summary by CodeRabbit

• Tests
  • Updated test infrastructure for disaggregated benchmarks, including enhanced test utilities and adjusted backend configuration skipping for integration testing.

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Description

Test Coverage

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[yuxianq]

/bot run --disable-fail-fast

[coderabbitai]

📝 Walkthrough

Walkthrough

These changes update test imports to add a utility function and modify test waiver configurations to change which backend configurations are skipped during disaggregated benchmark integration testing.

Changes

Cohort / File(s)	Summary
Test Imports tests/integration/defs/disaggregated/test_disaggregated.py	Added get_free_port import from tensorrt_llm._utils alongside existing mpi_disabled import.
Test Waiver List tests/integration/test_lists/waives.txt	Modified backend target configurations in disaggregated benchmark skip entries, transitioning certain test cases from BF16-based backends to FP8-based backends (e.g., DeepSeek-V3-Lite, llama-v3-8b-hf).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description is essentially empty—only the template is present with no actual content in the Description, Test Coverage, or explanation sections despite the checkbox being marked.	Add a Description section explaining why get_free_port was needed, what issue it fixes, and list relevant test files in Test Coverage section.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly specifies the main change: importing get_free_port utility function, matching the code changes which add this import to the test module.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

• 📝 Generate docstrings

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📜 Recent review details

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📥 Commits

Reviewing files that changed from the base of the PR and between 6732c76 and bfe0940.

📒 Files selected for processing (2)

• tests/integration/defs/disaggregated/test_disaggregated.py
• tests/integration/test_lists/waives.txt

💤 Files with no reviewable changes (1)

• tests/integration/test_lists/waives.txt

🧰 Additional context used

📓 Path-based instructions (2)

**/*.py

📄 CodeRabbit inference engine (CODING_GUIDELINES.md)

**/*.py: Code developed for TensorRT-LLM should conform to Python 3.8+
Indent Python code with 4 spaces. Do not use tabs
Always maintain the namespace when importing in Python, even if only one class or function from a module is used
Python files should use snake_case naming: some_file.py
Python classes should use PascalCase naming: class SomeClass
Python functions and methods should use snake_case naming: def my_awesome_function():
Python local variables should use snake_case naming: my_variable = ...
Python variable names that start with a number should be prefixed with 'k': k_99th_percentile = ...
Python global variables should use upper snake_case with prefix 'G': G_MY_GLOBAL = ...
Python constants should use upper snake_case naming: MY_CONSTANT = ...
Avoid shadowing variables declared in an outer scope in Python
Initialize all externally visible members of a Python class in the constructor
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Use Google style docstrings in Python for classes and functions, which can be parsed by Sphinx
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Files:

• tests/integration/defs/disaggregated/test_disaggregated.py

**/*.{cpp,h,cu,cuh,py}

📄 CodeRabbit inference engine (CODING_GUIDELINES.md)

All TensorRT-LLM Open Source Software code should contain an NVIDIA copyright header that includes the year of its latest meaningful modification

Files:

• tests/integration/defs/disaggregated/test_disaggregated.py

🧠 Learnings (3)

📓 Common learnings

Learnt from: tongyuantongyu
Repo: NVIDIA/TensorRT-LLM PR: 7781
File: tests/integration/test_lists/waives.txt:313-313
Timestamp: 2025-09-17T02:48:52.732Z
Learning: In TensorRT-LLM, `tests/integration/test_lists/waives.txt` is specifically for waiving/skipping tests, while other test list files like those in `test-db/` and `qa/` directories are for different test execution contexts (pre-merge, post-merge, QA tests). The same test appearing in both waives.txt and execution list files is intentional - the test is part of test suites but will be skipped due to the waiver.

Learnt from: nvpohanh
Repo: NVIDIA/TensorRT-LLM PR: 7478
File: tests/unittest/_torch/modeling/test_modeling_llama_min_latency.py:286-308
Timestamp: 2025-09-03T13:16:38.028Z
Learning: In test files, temporary monkey-patches for upstream bugs can be kept simple when they are explicitly intended to be removed soon, rather than investing effort in making them more robust.

📚 Learning: 2025-12-02T03:40:40.572Z

Learnt from: Shixiaowei02
Repo: NVIDIA/TensorRT-LLM PR: 9582
File: tests/integration/defs/accuracy/test_disaggregated_serving.py:73-83
Timestamp: 2025-12-02T03:40:40.572Z
Learning: In the disaggregated serving tests (tests/integration/defs/accuracy/test_disaggregated_serving.py), calling get_free_port() multiple times in succession is acceptable because the tests run in a controlled single-process environment where race conditions for port allocation are not a concern.

Applied to files:

• tests/integration/defs/disaggregated/test_disaggregated.py

📚 Learning: 2025-07-28T17:06:08.621Z

Learnt from: moraxu
Repo: NVIDIA/TensorRT-LLM PR: 6303
File: tests/integration/test_lists/qa/examples_test_list.txt:494-494
Timestamp: 2025-07-28T17:06:08.621Z
Learning: In TensorRT-LLM testing, it's common to have both CLI flow tests (test_cli_flow.py) and PyTorch API tests (test_llm_api_pytorch.py) for the same model. These serve different purposes: CLI flow tests validate the traditional command-line workflow, while PyTorch API tests validate the newer LLM API backend. Both are legitimate and should coexist.

Applied to files:

• tests/integration/defs/disaggregated/test_disaggregated.py

🧬 Code graph analysis (1)

tests/integration/defs/disaggregated/test_disaggregated.py (2)

tensorrt_llm/_utils.py (2)

• get_free_port (477-478)
• mpi_disabled (533-535)

tensorrt_llm/_torch/auto_deploy/distributed/common.py (1)

• get_free_port (72-73)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)

• GitHub Check: Pre-commit Check

🔇 Additional comments (1)

tests/integration/defs/disaggregated/test_disaggregated.py (1)

39-39: LGTM - Critical import fix!

The addition of get_free_port and mpi_disabled imports resolves missing dependencies that would have caused NameError at runtime when these functions are called (line 346 for mpi_disabled() and lines 1581, 1595, 1608 for get_free_port()). The import follows coding guidelines by maintaining namespace and using proper snake_case naming.

Based on learnings, calling get_free_port() multiple times in succession is acceptable in this controlled test environment.

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[yuxianq]

/bot run --disable-fail-fast --extra-stage "DGX_H200-4_GPUs-PyTorch-Post-Merge-1"

[tensorrt-cicd]

PR_Github #30171 [ run ] triggered by Bot. Commit: bfe0940

[tensorrt-cicd]

PR_Github #30172 [ run ] triggered by Bot. Commit: bfe0940

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[yuxianq]

/bot run --disable-fail-fast --extra-stage "DGX_H200-4_GPUs-PyTorch-Post-Merge-1"

[tensorrt-cicd]

PR_Github #30186 [ run ] triggered by Bot. Commit: bfe0940

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