[https://nvbugs/5766952][fix] Fix AIPerf issue.

[dominicshanshan]

Summary by CodeRabbit

• Tests

  • Improved stress test metrics extraction with enhanced fallback mechanisms for model name and concurrency configuration.
  • Added error handling to validate metrics availability and raise exceptions when required data is missing.

• Refactor

  • Updated artifact directory resolution logic to compute default paths dynamically instead of using fixed relative paths.

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Test Coverage

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[coderabbitai]

📝 Walkthrough

Walkthrough

Modified a stress test utility file to update function signatures and parameter handling. Changed artifacts directory default from a hardcoded relative path to None with runtime resolution. Updated metrics parsing to use fallback logic for concurrency values and model names. Enhanced JSON file discovery with recursive glob searching. Added error handling for missing or invalid metrics.

Changes

Cohort / File(s)

Summary

Stress Test Metrics Extraction tests/integration/defs/stress_test/stress_test.py

Disabled --verbose flag in aiperf command. Changed extract_stress_test_metrics signature from artifacts_dir="./artifacts" to artifacts_dir=None with dynamic path resolution relative to script location. Updated concurrency extraction to read from input_config.loadgen.concurrency with fallback to input_config.perf_analyzer.stimulus.concurrency. Modified model name extraction with fallback chain: directory → input_config.endpoint.model_names → input_config.model_names with "unknown" default. Changed JSON file discovery to use glob with recursive=True. Added error handling for missing/invalid metrics.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description only contains the template boilerplate with no actual content. Required sections (Description, Test Coverage) are empty, and the PR Checklist shows no substantive information about what or why the changes were made.	Provide a Description explaining the AIPerf issue being fixed and the solution implemented. Include Test Coverage section listing relevant tests that validate the changes.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title follows the required format with NVBugs ticket, fix type, and summary. It directly relates to the changeset's focus on fixing AIPerf metrics extraction and related issues.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

---

🧹 Recent nitpick comments

tests/integration/defs/stress_test/stress_test.py (5)

809-810: Consider adding a brief comment explaining why verbose is disabled.

The commented-out --verbose flag is acceptable, but a brief inline comment explaining the rationale (e.g., reducing log noise, performance reasons) would improve maintainability for future developers.

---

1148-1161: Good improvement to make default path relative to script location.

The change from a hardcoded "./artifacts" to a script-relative path is more robust across different execution contexts. Consider normalizing the path for cleaner error messages and logging.

💡 Optional: Normalize the path

     if artifacts_dir is None:
         script_dir = os.path.dirname(os.path.abspath(__file__))
-        artifacts_dir = os.path.join(script_dir, "..", "artifacts")
+        artifacts_dir = os.path.normpath(os.path.join(script_dir, "..", "artifacts"))

---

1220-1226: Variable naming doesn't follow snake_case convention.

Per coding guidelines, Python local variables should use snake_case. The variable conCurrency should be renamed to con_currency or simply concurrency_value to avoid shadowing the list variable concurrency defined at line 1194.

♻️ Suggested fix

-                conCurrency = results.get("input_config",
-                                          {}).get("loadgen",
-                                                  {}).get("concurrency", 0)
-                if conCurrency == 0:
-                    conCurrency = results.get("input_config", {}).get(
-                        "perf_analyzer", {}).get("stimulus",
-                                                 {}).get("concurrency", 0)
+                concurrency_value = results.get("input_config",
+                                                {}).get("loadgen",
+                                                        {}).get("concurrency", 0)
+                if concurrency_value == 0:
+                    concurrency_value = results.get("input_config", {}).get(
+                        "perf_analyzer", {}).get("stimulus",
+                                                 {}).get("concurrency", 0)

Also update references at lines 1243, 1246 to use concurrency_value.

---

1233-1240: Variable naming doesn't follow snake_case convention.

Similar to the previous comment, modelName should be renamed to model_name_value (to avoid shadowing the list model_name at line 1196) per coding guidelines.

♻️ Suggested fix

-                    modelName = results.get("input_config", {}).get(
-                        "endpoint", {}).get("model_names", None)
-                    if modelName is None:
-                        modelName = results.get("input_config",
-                                                {}).get("model_names",
-                                                        ["unknown"])
-                    modelName = modelName[0] if isinstance(modelName,
-                                                           list) else modelName
+                    model_name_value = results.get("input_config", {}).get(
+                        "endpoint", {}).get("model_names", None)
+                    if model_name_value is None:
+                        model_name_value = results.get("input_config",
+                                                       {}).get("model_names",
+                                                               ["unknown"])
+                    model_name_value = model_name_value[0] if isinstance(model_name_value,
+                                                                         list) else model_name_value

Also update references at lines 1243, 1247.

---

1-1: Update copyright year to include 2026.

Per coding guidelines, all source files should contain an NVIDIA copyright header with the year of latest meaningful modification. Since this file is being modified in 2026, update the copyright to 2022-2025 or 2022-2026.

♻️ Suggested fix

-# SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-FileCopyrightText: Copyright (c) 2022-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.

Based on coding guidelines requiring copyright headers with the year of latest meaningful modification.

---

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📒 Files selected for processing (1)

• tests/integration/defs/stress_test/stress_test.py

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• tests/integration/defs/stress_test/stress_test.py

**/*.{cpp,cc,cxx,h,hpp,hxx,cu,cuh,py}

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[dominicshanshan]

Error introduced from this PR

[dominicshanshan]

/bot run

[tensorrt-cicd]

PR_Github #31954 [ run ] triggered by Bot. Commit: 6d71ce3

[tensorrt-cicd]

PR_Github #31954 [ run ] completed with state SUCCESS. Commit: 6d71ce3
/LLM/main/L0_MergeRequest_PR pipeline #24752 completed with status: 'SUCCESS'

[Superjomn]

LGTM