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@nv-guomingz nv-guomingz commented Aug 12, 2025

Summary by CodeRabbit

  • Tests
    • Enabled a previously waived structural-tag chat test, increasing coverage.
    • Refactored chat structure tests to use schema-driven validation for more robust, future-proof assertions.
    • Simplified test configuration to use a single guided decoding backend option.
    • Added runtime limits (batch size, sequence length, tokens) in test invocations to standardize behavior.
    • Removed brittle static checks in favor of dynamic validation.
  • Chores
    • Updated waiver list to reflect the re-enabled test.

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@nv-guomingz nv-guomingz requested a review from syuoni August 12, 2025 17:15
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📝 Walkthrough

Walkthrough

Updates test configurations and fixtures: removes one test waiver, revises two unit tests to set guided_decoding_backend: xgrammar, adjusts server CLI args, restructures one test to validate tool call JSON via jsonschema, and changes a fixture’s signature. No production code or public API changes.

Changes

Cohort / File(s) Summary
Waiver List Update
tests/integration/test_lists/waives.txt
Removes waiver for test_openai_chat_structural_tag_example to enable the test; other waivers unchanged.
OpenAI Chat tests — Structural Tag
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py
- Adds imports (json, re, jsonschema).
- Fixture now writes YAML with guided_decoding_backend: xgrammar and drops request parameter (signature change).
- Server run includes --max_batch_size=8, --max_seq_len=1024, --max_num_tokens=1024 and --extra_llm_api_options.
- Test refactored to split system/user prompts and replace brittle string checks with regex extraction of JSON blocks, parsed and validated against function schemas via jsonschema.
OpenAI Chat tests — JSON
tests/unittest/llmapi/apps/_test_openai_chat_json.py
Fixture simplified to write only guided_decoding_backend: xgrammar; removes disable_overlap_scheduler option and comment. Behavior otherwise unchanged.

Sequence Diagram(s)

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~15 minutes

Possibly related PRs

Suggested reviewers

  • nv-guomingz
  • litaotju
  • yiqingy0
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@nv-guomingz nv-guomingz force-pushed the user/guomingz/fix_nvbug_5375646 branch from 2dae890 to 7fe0d40 Compare August 12, 2025 17:15
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/bot run --stage-list "A10-PyTorch-1"

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Actionable comments posted: 0

🔭 Outside diff range comments (2)
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (2)

22-37: Avoid temp file collisions in parallel runs; use a unique temp filename.

Using a fixed filename in the global temp directory can collide across parallel pytest workers or other tests, causing flaky behavior. Prefer mkstemp or NamedTemporaryFile(delete=False) to generate a unique, race-free path.

Apply this minimal diff to harden the fixture (and prefer safe_dump):

 def temp_extra_llm_api_options_file(request):
-    temp_dir = tempfile.gettempdir()
-    temp_file_path = os.path.join(temp_dir, "extra_llm_api_options.yaml")
+    fd, temp_file_path = tempfile.mkstemp(prefix="extra_llm_api_options_", suffix=".yaml")
+    os.close(fd)
     try:
         extra_llm_api_options_dict = {
             "guided_decoding_backend": "xgrammar",
             "max_batch_size": 32
         }
 
-        with open(temp_file_path, 'w') as f:
-            yaml.dump(extra_llm_api_options_dict, f)
+        with open(temp_file_path, 'w') as f:
+            yaml.safe_dump(extra_llm_api_options_dict, f)
 
         yield temp_file_path
     finally:
         if os.path.exists(temp_file_path):
             os.remove(temp_file_path)

1-2: Add NVIDIA copyright header
Please prepend the current-year NVIDIA header—matching the existing format in other Python files—to tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py:

+# Copyright 2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
🧹 Nitpick comments (1)
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (1)

16-19: Fixture ids is unused (not parametrized) and also mismatched with returned model name.

Either remove ids or parametrize the fixture properly. If you keep a single, fixed model, dropping ids avoids confusion.

Apply one of:

-@pytest.fixture(scope="module", ids=["TinyLlama-1.1B-Chat"])
+@pytest.fixture(scope="module")
 def model_name():
     return "llama-3.1-model/Llama-3.1-8B-Instruct"

Or align the id:

-@pytest.fixture(scope="module", ids=["TinyLlama-1.1B-Chat"])
+@pytest.fixture(scope="module", ids=["Llama-3.1-8B-Instruct"])
 def model_name():
     return "llama-3.1-model/Llama-3.1-8B-Instruct"
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  • tests/integration/test_lists/waives.txt (0 hunks)
  • tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (1 hunks)
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  • tests/integration/test_lists/waives.txt
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**/*.py

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**/*.py: Python code must target Python 3.8+
Python indentation: 4 spaces, no tabs
Maintain module namespace in imports (from package.subpackage import foo; then use foo.SomeClass())
Python file names use snake_case
Python class names use PascalCase
Python functions/methods and local variables use snake_case; variables starting with a number get k_ prefix (e.g., k_99th_percentile)
Global variables use G_ prefixed UPPER_SNAKE_CASE (e.g., G_MY_GLOBAL)
Constants use UPPER_SNAKE_CASE in Python
Avoid shadowing variables from outer scopes in Python
Initialize all externally visible members of a Python class in init
Prefer docstrings for interfaces used outside a file; comments for local code
Use Google-style docstrings for classes and functions (Sphinx-parsable)
Document attributes/variables inline with short docstrings
Avoid reflection when simple alternatives exist (e.g., prefer explicit parameters over dict(**locals()))
In try/except, catch the narrowest exceptions possible
For duck-typing with try/except, keep try body minimal and put logic in else

Files:

  • tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py
**/*.{cpp,cxx,cc,cu,h,hpp,hxx,hh,cuh,py}

📄 CodeRabbit Inference Engine (CODING_GUIDELINES.md)

Prepend NVIDIA copyright header (current year) to all source files

Files:

  • tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py
⏰ 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 (2)
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (2)

26-29: Adding max_batch_size=32 is a sensible, targeted mitigation for OOM in this test path.

Capping request batch size at the server level for this test should prevent spikes that lead to OOM without altering test semantics.


41-45: Confirmed — extra_llm_api_options 'max_batch_size' is read and applied

Short summary: serve.py loads the YAML and merges it into the runtime args; the merge applies top-level keys (including max_batch_size) and build_config, and the LLM/runtime code uses args.max_batch_size (falling back to build_config.max_batch_size).

Files to inspect (evidence):

  • tensorrt_llm/commands/serve.py — reads the YAML and merges into llm args (see handling around lines ~316–321).
  • tensorrt_llm/llmapi/llm_args.py — update_llm_args_with_extra_dict merges top-level keys and converts build_config (function around ~2364–2392).
  • tensorrt_llm/llmapi/llm.py — LLM reads self.args.max_batch_size and falls back to build_config.max_batch_size (uses at ~614–617 and other places where runtime max_batch_size is applied).
  • tensorrt_llm/runtime/model_runner_cpp.py — C++ runner uses the provided max_batch_size (defaults/asserts vs model_config.max_batch_size around ~358–361).

Conclusion: no code changes required — extra_llm_api_options max_batch_size is consumed and enforced by the backend.

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PR_Github #15008 [ run ] completed with state SUCCESS
/LLM/release-1.0/L0_MergeRequest_PR pipeline #67 (Partly Tested) completed with status: 'SUCCESS'
Pipeline passed with automatic retried tests. Check the rerun report for details.

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/bot run

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PR_Github #15032 [ run ] triggered by Bot

Signed-off-by: Enwei Zhu <[email protected]>
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Actionable comments posted: 2

🔭 Outside diff range comments (2)
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (2)

25-37: Make temp file name unique and use safe_dump to avoid cross-test collisions

Using a fixed filename in the system temp directory can collide across parallel test runs or modules. Prefer mkstemp to create a unique file and yaml.safe_dump for safety.

Apply this diff:

 def temp_extra_llm_api_options_file():
-    temp_dir = tempfile.gettempdir()
-    temp_file_path = os.path.join(temp_dir, "extra_llm_api_options.yaml")
+    fd, temp_file_path = tempfile.mkstemp(
+        prefix="extra_llm_api_options_",
+        suffix=".yaml"
+    )
+    os.close(fd)
     try:
         extra_llm_api_options_dict = {"guided_decoding_backend": "xgrammar"}
 
-        with open(temp_file_path, 'w') as f:
-            yaml.dump(extra_llm_api_options_dict, f)
+        with open(temp_file_path, 'w', encoding='utf-8') as f:
+            yaml.safe_dump(extra_llm_api_options_dict, f, sort_keys=True)
 
         yield temp_file_path
     finally:
         if os.path.exists(temp_file_path):
             os.remove(temp_file_path)

122-147: Resolve instruction conflict and improve prompt clarity; embed schemas as JSON

The system prompt asks to “Only call one function at a time” but the test expects both functions to be called. Also, embed the schemas as JSON (not Python dict repr) for clarity. Fix grammar.

Apply this diff:

-    system_prompt = f"""
+    system_prompt = f"""
 # Tool Instructions
 - Always execute python code in messages that you share.
 - When looking for real time information use relevant functions if available else fallback to brave_search
 You have access to the following functions:
 Use the function 'get_current_weather' to: Get the current weather in a given location
-{tool_get_current_weather["function"]}
+{json.dumps(tool_get_current_weather["function"], ensure_ascii=False)}
 Use the function 'get_current_date' to: Get the current date and time for a given timezone
-{tool_get_current_date["function"]}
+{json.dumps(tool_get_current_date["function"], ensure_ascii=False)}
-If a you choose to call a function ONLY reply in the following format:
+If you choose to call a function, ONLY reply in the following format:
 <{{start_tag}}={{function_name}}>{{parameters}}{{end_tag}}
 where
 start_tag => `<function`
 parameters => a JSON dict with the function argument name as key and function argument value as value.
 end_tag => `</function>`
 Here is an example,
 <function=example_function_name>{{"example_name": "example_value"}}</function>
 Reminder:
 - Function calls MUST follow the specified format
 - Required parameters MUST be specified
-- Only call one function at a time
-- Put the entire function call reply on one line
+- Call both functions by emitting two separate function-call lines (one per function) in the same reply
+- Put each function call on a single line
 - Always add your sources when using search results to answer the user query
 You are a helpful assistant."""

Additionally, to reduce test flakiness, consider setting temperature=0 on the completion request (outside this block).

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📒 Files selected for processing (1)
  • tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (5 hunks)
🧰 Additional context used
📓 Path-based instructions (2)
**/*.py

📄 CodeRabbit Inference Engine (CODING_GUIDELINES.md)

**/*.py: Python code must target Python 3.8+
Python indentation: 4 spaces, no tabs
Maintain module namespace in imports (from package.subpackage import foo; then use foo.SomeClass())
Python file names use snake_case
Python class names use PascalCase
Python functions/methods and local variables use snake_case; variables starting with a number get k_ prefix (e.g., k_99th_percentile)
Global variables use G_ prefixed UPPER_SNAKE_CASE (e.g., G_MY_GLOBAL)
Constants use UPPER_SNAKE_CASE in Python
Avoid shadowing variables from outer scopes in Python
Initialize all externally visible members of a Python class in init
Prefer docstrings for interfaces used outside a file; comments for local code
Use Google-style docstrings for classes and functions (Sphinx-parsable)
Document attributes/variables inline with short docstrings
Avoid reflection when simple alternatives exist (e.g., prefer explicit parameters over dict(**locals()))
In try/except, catch the narrowest exceptions possible
For duck-typing with try/except, keep try body minimal and put logic in else

Files:

  • tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py
**/*.{cpp,cxx,cc,cu,h,hpp,hxx,hh,cuh,py}

📄 CodeRabbit Inference Engine (CODING_GUIDELINES.md)

Prepend NVIDIA copyright header (current year) to all source files

Files:

  • tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py
⏰ 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 (3)
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (3)

148-156: LGTM: Two-part messaging improves clarity

Splitting system vs user prompts is clearer and should guide the model better.


1-2: Missing NVIDIA copyright header

Per repository guidelines, prepend the NVIDIA copyright header to all Python source files.

Apply this diff:

+# Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
 # Adapted from
 # https://github.com/vllm-project/vllm/blob/aae6927be06dedbda39c6b0c30f6aa3242b84388/tests/entrypoints/openai/test_chat.py
⛔ Skipped due to learnings
Learnt from: galagam
PR: NVIDIA/TensorRT-LLM#6487
File: tests/unittest/_torch/auto_deploy/unit/singlegpu/test_ad_trtllm_bench.py:1-12
Timestamp: 2025-08-06T13:58:07.506Z
Learning: In TensorRT-LLM, test files (files under tests/ directories) do not require NVIDIA copyright headers, unlike production source code files. Test files typically start directly with imports, docstrings, or code.

44-47: Validate CLI Flags in RemoteOpenAIServer
Both --max_batch_size and --extra_llm_api_options are defined and accepted by the server’s CLI:

--max_batch_size is registered (underscore style) in tensorrt_llm/commands/serve.py and build.py via click and argparse
--extra_llm_api_options is supported in the llm-launch command (used by RemoteOpenAIServer)

No changes needed.

Signed-off-by: Enwei Zhu <[email protected]>
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Actionable comments posted: 1

📜 Review details

Configuration used: .coderabbit.yaml
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0e2a5c1 and 671ac9b.

📒 Files selected for processing (1)
  • requirements-dev.txt (1 hunks)
⏰ 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)
requirements-dev.txt (1)

27-27: LGTM on adding jsonschema for test-time schema validation.

This aligns with the updated tests that validate payloads with jsonschema.

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PR_Github #15032 [ run ] completed with state SUCCESS
/LLM/release-1.0/L0_MergeRequest_PR pipeline #72 completed with status: 'SUCCESS'

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syuoni commented Aug 13, 2025

/bot run --stage-list "A10-PyTorch-1"

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PR_Github #15059 [ run ] triggered by Bot

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PR_Github #15059 [ run ] completed with state SUCCESS
/LLM/release-1.0/L0_MergeRequest_PR pipeline #77 (Partly Tested) completed with status: 'FAILURE'

Signed-off-by: Enwei Zhu <[email protected]>
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syuoni commented Aug 13, 2025

/bot run --stage-list "A10-PyTorch-1"

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syuoni commented Aug 13, 2025

/bot run --stage-list "A10-PyTorch-1"

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PR_Github #15076 [ run ] triggered by Bot

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Actionable comments posted: 0

🔭 Outside diff range comments (1)
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (1)

25-38: Avoid temp file collisions; use a unique NamedTemporaryFile and safe_dump

Writing to a fixed filename in the global temp dir is racy and can collide under parallel CI. Use NamedTemporaryFile(delete=False) and yaml.safe_dump.

Apply this diff:

-def temp_extra_llm_api_options_file():
-    temp_dir = tempfile.gettempdir()
-    temp_file_path = os.path.join(temp_dir, "extra_llm_api_options.yaml")
-    try:
-        extra_llm_api_options_dict = {"guided_decoding_backend": "xgrammar"}
-
-        with open(temp_file_path, 'w') as f:
-            yaml.dump(extra_llm_api_options_dict, f)
-
-        yield temp_file_path
-    finally:
-        if os.path.exists(temp_file_path):
-            os.remove(temp_file_path)
+def temp_extra_llm_api_options_file():
+    # Avoid cross-test collisions by using a unique temp file per run.
+    with tempfile.NamedTemporaryFile(mode="w", suffix=".yaml", delete=False) as tf:
+        yaml.safe_dump({"guided_decoding_backend": "xgrammar"}, tf)
+        temp_file_path = tf.name
+    try:
+        yield temp_file_path
+    finally:
+        if os.path.exists(temp_file_path):
+            os.remove(temp_file_path)
♻️ Duplicate comments (2)
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (2)

3-9: Confirm jsonschema is declared in test/dev dependencies

New import jsonschema requires a dev/test dependency. AI summary claims it was added to requirements-dev.txt; verify it exists to avoid CI import errors.

Run:

#!/bin/bash
# Verify 'jsonschema' is declared in dependency files.
fd -a 'requirements*.txt' 'pyproject.toml' 'setup.cfg' 'environment*.yml' 'Pipfile*' 2>/dev/null | while read -r f; do
  echo "---- $f"
  rg -n --fixed-strings 'jsonschema' "$f" || echo "jsonschema: not found in $f"
done

188-197: Harden tag parsing and JSON validation; avoid [\S\s] and handle errors

Guard against missing tags and invalid JSON, use re.DOTALL, and de-duplicate via a loop.

Apply this diff:

-    match = re.search(r'<function=get_current_weather>([\S\s]+?)</function>',
-                      message.content)
-    params = json.loads(match.group(1))
-    jsonschema.validate(params,
-                        tool_get_current_weather["function"]["parameters"])
-
-    match = re.search(r'<function=get_current_date>([\S\s]+?)</function>',
-                      message.content)
-    params = json.loads(match.group(1))
-    jsonschema.validate(params, tool_get_current_date["function"]["parameters"])
+    validations = [
+        ("get_current_weather",
+         tool_get_current_weather["function"]["parameters"]),
+        ("get_current_date",
+         tool_get_current_date["function"]["parameters"]),
+    ]
+    for func_name, schema in validations:
+        match = re.search(
+            rf"<function={func_name}>(.+?)</function>",
+            message.content,
+            flags=re.DOTALL,
+        )
+        assert match is not None, f"Missing function tag for {func_name}"
+        try:
+            params = json.loads(match.group(1))
+        except json.JSONDecodeError as e:
+            pytest.fail(f"Invalid JSON for {func_name}: {e}")
+        jsonschema.validate(instance=params, schema=schema)
🧹 Nitpick comments (1)
tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (1)

123-148: Fix grammar and clarify multiple-function behavior to match test intent

The line “If a you choose…” has a typo, and “Only call one function at a time” conflicts with the user prompt (date + weather) and the test expecting both tags.

Apply this diff:

-If a you choose to call a function ONLY reply in the following format:
+If you choose to call a function, reply ONLY in the following format:
@@
- - Only call one function at a time
+ - You may call multiple functions; output each function call on its own line in a single assistant message
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tests/unittest/llmapi/apps/_test_openai_chat_structural_tag.py (3)

44-48: Good call: constrain server resources to prevent OOM on A10/A30

Adding max_batch_size/max_seq_len/max_num_tokens aligns with the PR’s OOM objective and is a pragmatic mitigation.


1-2: Add required NVIDIA copyright header at file top

Per coding guidelines, prepend the NVIDIA copyright header (current year) to all Python source files.

Apply this diff:

+ # Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ # Licensed under the Apache License, Version 2.0 (the "License");
+ # you may not use this file except in compliance with the License.
+ # You may obtain a copy of the License at
+ #     http://www.apache.org/licenses/LICENSE-2.0
+ # Unless required by applicable law or agreed to in writing, software
+ # distributed under the License is distributed on an "AS IS" BASIS,
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ # See the License for the specific language governing permissions and
+ # limitations under the License.
+
 # Adapted from
 # https://github.com/vllm-project/vllm/blob/aae6927be06dedbda39c6b0c30f6aa3242b84388/tests/entrypoints/openai/test_chat.py
⛔ Skipped due to learnings
Learnt from: galagam
PR: NVIDIA/TensorRT-LLM#6487
File: tests/unittest/_torch/auto_deploy/unit/singlegpu/test_ad_trtllm_bench.py:1-12
Timestamp: 2025-08-06T13:58:07.506Z
Learning: In TensorRT-LLM, test files (files under tests/ directories) do not require NVIDIA copyright headers, unlike production source code files. Test files typically start directly with imports, docstrings, or code.

163-163: max_completion_tokens correctly maps to max_tokens
The ChatCompletionRequest model in openai_protocol.py defines

max_completion_tokens: int = Field(default=None, validation_alias='max_tokens')

so using max_completion_tokens in tests is intentional and will serialize as the official max_tokens parameter. No changes required.

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syuoni commented Aug 13, 2025

/bot run --stage-list "A10-PyTorch-1"

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🔭 Outside diff range comments (3)
tests/unittest/llmapi/apps/_test_openai_chat_json.py (3)

79-80: Fix Python 3.8-incompatible type hints and incorrect return annotation.

  • list[...] and dict[...] generics require Python 3.9+. This repo targets Python 3.8+, so use typing.List/Dict/Tuple or add from future import annotations.
  • The function’s return annotation declares dict[str, Any], but it returns a tuple (dict, str).

Apply this diff:

-from typing import Any
+from typing import Any, Dict, List, Tuple
@@
-    def _create_and_validate_response(
-            messages: list[dict[str, Any]]) -> dict[str, Any]:
+    def _create_and_validate_response(
+            messages: List[Dict[str, Any]]) -> Tuple[Dict[str, Any], str]:
@@
-        return message_json, message.content
+        return message_json, message.content

Also applies to: 101-101, 6-6


24-37: Avoid file collisions/race conditions in temp file fixture; use tmp_path_factory and safe_dump.

Using a fixed filename in the OS temp dir can race across parallel test workers and leaves cross-run artifacts. Prefer a unique path via tmp_path_factory. Also, prefer yaml.safe_dump.

Apply this diff:

-@pytest.fixture(scope="module")
-def temp_extra_llm_api_options_file(request):
-    temp_dir = tempfile.gettempdir()
-    temp_file_path = os.path.join(temp_dir, "extra_llm_api_options.yaml")
+@pytest.fixture(scope="module")
+def temp_extra_llm_api_options_file(tmp_path_factory):
+    temp_dir = tmp_path_factory.mktemp("llmapi_options")
+    temp_file_path = temp_dir / "extra_llm_api_options.yaml"
     try:
-        extra_llm_api_options_dict = {"guided_decoding_backend": "xgrammar"}
-
-        with open(temp_file_path, "w") as f:
-            yaml.dump(extra_llm_api_options_dict, f)
-
-        yield temp_file_path
+        extra_llm_api_options_dict = {"guided_decoding_backend": "xgrammar"}
+        with open(temp_file_path, "w") as f:
+            yaml.safe_dump(extra_llm_api_options_dict, f)
+        yield str(temp_file_path)
     finally:
-        if os.path.exists(temp_file_path):
-            os.remove(temp_file_path)
+        if temp_file_path.exists():
+            temp_file_path.unlink()

1-2: Add NVIDIA copyright header.

This repository requires the NVIDIA copyright header at the top of all source files.

+# Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
+
 # Adapted from
 # https://github.com/vllm-project/vllm/blob/aae6927be06dedbda39c6b0c30f6aa3242b84388/tests/entrypoints/openai/test_chat.py
🧹 Nitpick comments (1)
tests/unittest/llmapi/apps/_test_openai_chat_json.py (1)

84-84: Lower max_tokens to reduce memory/time without affecting test intent.

For TinyLlama, max_tokens=1000 is excessive for generating a small JSON object and can increase memory footprint. 256 is more than enough.

-            max_tokens=1000,
+            max_tokens=256,
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**/*.py: Python code must target Python 3.8+
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Python file names use snake_case
Python class names use PascalCase
Python functions/methods and local variables use snake_case; variables starting with a number get k_ prefix (e.g., k_99th_percentile)
Global variables use G_ prefixed UPPER_SNAKE_CASE (e.g., G_MY_GLOBAL)
Constants use UPPER_SNAKE_CASE in Python
Avoid shadowing variables from outer scopes in Python
Initialize all externally visible members of a Python class in init
Prefer docstrings for interfaces used outside a file; comments for local code
Use Google-style docstrings for classes and functions (Sphinx-parsable)
Document attributes/variables inline with short docstrings
Avoid reflection when simple alternatives exist (e.g., prefer explicit parameters over dict(**locals()))
In try/except, catch the narrowest exceptions possible
For duck-typing with try/except, keep try body minimal and put logic in else

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tests/unittest/llmapi/apps/_test_openai_chat_json.py (2)

29-29: Change to xgrammar backend looks good.

Setting guided_decoding_backend to "xgrammar" aligns with the recent structural_tag test updates and should reduce OOM risk versus unconstrained decoding.


24-45: Validation of “xgrammar” Support in LLM Server

  • The LLM API dataclass ([tensorrt_llm/llmapi/llm_args.py:1202]) declares
    guided_decoding_backend: Optional[Literal["xgrammar", "llguidance"]], so “xgrammar” is an accepted literal.

  • In the Python executor (tensorrt_llm/llmapi/llm.py), both in the initialization path and in the backend‐switching path, if
    args.guided_decoding_backend == "xgrammar", the code builds a valid GuidedDecodingConfig for XGrammar; any other non‐null value
    besides “llguidance” raises a ValueError.

  • In the Triton C++ backend ([model_instance_state.cc]), only “xgrammar” is allowed; passing anything else throws an error.

  • The CLI server (trtllm-serve) reads --extra_llm_api_options into llm_args via update_llm_args_with_extra_dict, ensuring
    guided_decoding_backend: "xgrammar" is forwarded to the Python LLM constructor.

  • The RemoteOpenAIServer fixture simply passes ["--extra_llm_api_options", file] to trtllm-serve, so the option is correctly forwarded.

All checks confirm that “xgrammar” is recognized end‐to‐end and will not silently no‐op. No changes required.

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PR_Github #15148 [ reuse-pipeline ] completed with state SUCCESS
Reusing PR_Github #15136 (Partly Tested) for commit 6412387

@syuoni syuoni merged commit 3e46624 into NVIDIA:release/1.0 Aug 13, 2025
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Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 22, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 22, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 23, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 24, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 25, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 25, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 25, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 26, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 27, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 27, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 27, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 27, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 28, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 28, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 28, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 28, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 28, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 28, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 29, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 29, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 29, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 29, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
dominicshanshan pushed a commit to dominicshanshan/TensorRT-LLM that referenced this pull request Aug 30, 2025
…se (NVIDIA#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
joyang-nv pushed a commit that referenced this pull request Sep 1, 2025
…se (#6838)

Signed-off-by: nv-guomingz <[email protected]>
Signed-off-by: Enwei Zhu <[email protected]>
Co-authored-by: Enwei Zhu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
@nv-guomingz nv-guomingz deleted the user/guomingz/fix_nvbug_5375646 branch September 30, 2025 07:45
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