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@dominicshanshan dominicshanshan commented Feb 13, 2026

Summary by CodeRabbit

  • New Features

    • Added comprehensive CPU affinity configuration documentation for NUMA-aware deployments.
    • Added supported hardware documentation detailing NVIDIA architecture compatibility.
    • Enhanced Qwen3VL models with improved multimodal placeholder handling.
  • Bug Fixes

    • Fixed subprocess stream handling in test utilities.
    • Corrected SLURM job name retrieval logic.
  • Documentation

    • Expanded deployment and hardware support guidance.
    • Removed outdated GPU architecture details from overview.
  • Tests

    • Extended stress test configurations for DeepSeek models with optimized timeouts.
    • Added GPU-architecture-aware MOE backend selection (Blackwell optimization).
    • Updated test skip configurations.
  • Chores

    • Simplified speculative decoding logic internally.
    • Optimized kernel shared memory usage.
    • Added MTP deprecation warning for legacy 2-model style.

Description

This is weekly Mass Integration (MI) for release/1.2. Follow PR will not cherry back to main:
#11099 (duplicate with #11100)
#11188 (duplicate with #10471)
and seven infra PR with title: [None][infra] Check in most recent lock file from nightly pipeline

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📝 Walkthrough

Walkthrough

This PR introduces speculative decoding logic simplification by removing MLA parameter dependency, adds GPU architecture-aware MOE backend selection in stress tests, updates documentation for NUMA-aware CPU affinity configuration and hardware support, modifies Qwen3VL model placeholder configuration, and adjusts various test configurations and timeouts.

Changes

Cohort / File(s) Summary
Speculative Decoding Refactoring
tensorrt_llm/_torch/speculative/interface.py, tensorrt_llm/_torch/pyexecutor/model_engine.py
Removed is_mla parameter from attention_need_spec_dec_mode method signature and logic; simplified use_case_1 condition to depend solely on use_one_engine(), eliminating XQA version checks.
Attention/Kernel Optimizations
cpp/kernels/xqa/mha_sm90.cu, cpp/tensorrt_llm/common/attentionOp.cpp
Added conditional VT buffer/barrier compilation based on SWAP_AB flag in CUDA kernel; removed fallback error handling for speculative decoding and FP4 output paths in attention operations.
Documentation Additions
docs/source/deployment-guide/configuring-cpu-affinity.md, docs/source/supported-hardware.md, docs/source/index.rst, docs/source/overview.md
Added comprehensive NUMA-aware CPU affinity configuration guide and new supported hardware documentation; updated index toctree with new entries; removed GPU architecture support subsection from overview.
Model Configuration
tensorrt_llm/_torch/models/modeling_qwen3vl.py, tensorrt_llm/_torch/models/modeling_qwen3vl_moe.py
Added placeholders_separator parameter (empty string) to MultimodalPlaceholderMetadata for Qwen3VL and Qwen3MoeVL models.
Stress Test Infrastructure
tests/integration/defs/stress_test/stress_test.py, tests/integration/test_lists/qa/llm_function_stress.txt
Expanded DeepSeek model configurations with FP8/FP4/NVFP4 variants; introduced GPU-architecture-aware MOE backend selection logic (DEEPGEMM for Blackwell+FP8, CUTEDSL for Blackwell+NVFP4); increased timeouts and token limits; added request-rate limiting for large MoE models.
Test Updates
tests/integration/defs/disaggregated/test_auto_scaling.py, tests/integration/defs/perf/disagg/execution/executor.py, tests/integration/defs/perf/disagg/utils/common.py, tests/integration/defs/test_e2e.py, tests/integration/test_lists/waives.txt, tests/unittest/llmapi/apps/_test_openai_chat_harmony.py
Updated subprocess stdout/stderr handling to use None instead of explicit sys.stdout/sys.stderr when not saving logs; enhanced SLURM job name composition using account prefix; removed use_pytorch_backend parameter from MIG test, hardcoding PyTorch backend; adjusted test skip configurations; added top_k parameter to OpenAI chat streaming tests.
Test Reference Data
tests/integration/defs/accuracy/references/mmlu.yaml
Added duplicate accuracy entry for Qwen3-235B-A22B model (YAML key duplication).
LLM API
tensorrt_llm/llmapi/llm_args.py
Added deprecation warning in MTPDecodingConfig when 2-model MTP style is used, informing that the flag will be removed in release 1.3.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~30 minutes

Possibly related PRs

Suggested reviewers

  • brb-nv
  • joyang-nv
  • syuoni
  • byshiue
🚥 Pre-merge checks | ✅ 1 | ❌ 3
❌ Failed checks (2 warnings, 1 inconclusive)
Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 60.00% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
Merge Conflict Detection ⚠️ Warning ❌ Merge conflicts detected (32 files):

⚔️ cpp/kernels/xqa/mha_sm90.cu (content)
⚔️ cpp/tensorrt_llm/common/attentionOp.cpp (content)
⚔️ docs/source/index.rst (content)
⚔️ docs/source/overview.md (content)
⚔️ tensorrt_llm/_torch/models/modeling_qwen3vl.py (content)
⚔️ tensorrt_llm/_torch/models/modeling_qwen3vl_moe.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/communication/communication_factory.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/communication/deep_ep.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/communication/deep_ep_low_latency.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/configurable_moe.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/fused_moe_cute_dsl.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/fused_moe_cutlass.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/fused_moe_deepgemm.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/fused_moe_triton.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/fused_moe_trtllm_gen.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/interface.py (content)
⚔️ tensorrt_llm/_torch/modules/fused_moe/quantization.py (content)
⚔️ tensorrt_llm/_torch/pyexecutor/model_engine.py (content)
⚔️ tensorrt_llm/_torch/speculative/interface.py (content)
⚔️ tensorrt_llm/llmapi/llm_args.py (content)
⚔️ tests/integration/defs/accuracy/references/mmlu.yaml (content)
⚔️ tests/integration/defs/disaggregated/test_auto_scaling.py (content)
⚔️ tests/integration/defs/perf/disagg/execution/executor.py (content)
⚔️ tests/integration/defs/perf/disagg/utils/common.py (content)
⚔️ tests/integration/defs/stress_test/stress_test.py (content)
⚔️ tests/integration/defs/test_e2e.py (content)
⚔️ tests/integration/test_lists/qa/llm_function_stress.txt (content)
⚔️ tests/integration/test_lists/waives.txt (content)
⚔️ tests/unittest/_torch/modules/moe/quantize_utils.py (content)
⚔️ tests/unittest/_torch/modules/moe/test_moe_backend.py (content)
⚔️ tests/unittest/_torch/modules/moe/test_moe_module.py (content)
⚔️ tests/unittest/llmapi/apps/_test_openai_chat_harmony.py (content)

These conflicts must be resolved before merging into main.
Resolve conflicts locally and push changes to this branch.
Title check ❓ Inconclusive The PR title uses vague generic language 'Mass integration' and contains apparent typo 'chroe' instead of 'chore', making it unclear and non-descriptive. Correct the typo 'chroe' to 'chore' and consider a more specific title that conveys the integration purpose, such as '[None][chore] Integrate release/1.2 changes - batch 4'.
✅ Passed checks (1 passed)
Check name Status Explanation
Description check ✅ Passed The PR description adequately explains this is a weekly mass integration from release/1.2, identifies duplicate PRs to exclude, notes infra PRs involved, and follows the template structure with proper checklist completion.

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Actionable comments posted: 2

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)
tests/integration/defs/stress_test/stress_test.py (1)

1-1: ⚠️ Potential issue | 🟡 Minor

Update the copyright year to include 2026.

The copyright header reads 2022-2024, but this file is being meaningfully modified in 2026. Per coding guidelines, the year of the latest meaningful modification should be reflected.

-# SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-FileCopyrightText: Copyright (c) 2022-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.

As per coding guidelines: "All source files must contain an NVIDIA copyright header with the year of latest meaningful modification."

🤖 Fix all issues with AI agents
In `@docs/source/supported-hardware.md`:
- Around line 3-7: The entry under "NVIDIA Blackwell" mixes a system name with
GPU model names; update the NVIDIA Blackwell bullet so GPU models remain listed
(B200, GB200, B300, GB300) and remove "DGX Spark" from that list, then either
add a new separate bullet or parenthetical note clarifying that "DGX Spark" is a
system/platform that houses Blackwell GPUs (e.g., add a separate line "Systems:
DGX Spark (uses Blackwell GPUs)") to keep GPU-model entries consistent; modify
the text around the "NVIDIA Blackwell" bullet and the new separate line
accordingly.

In `@tests/integration/defs/accuracy/references/mmlu.yaml`:
- Around line 251-254: Remove the duplicated YAML mapping key by keeping a
single accuracy entry and deleting the redundant one; in the shown mapping
(keys: quant_algo, kv_cache_quant_algo, accuracy) ensure only one accuracy: 85.5
remains so the YAML mapping contains unique keys (refer to the accuracy key next
to quant_algo and kv_cache_quant_algo).
🧹 Nitpick comments (3)
tensorrt_llm/_torch/models/modeling_qwen3vl_moe.py (1)

1-1: Missing NVIDIA copyright header.

This file lacks the required NVIDIA copyright header. While this appears to be a pre-existing issue (not introduced by this PR), since the file is being modified, consider adding the header. As per coding guidelines, "All source files must contain an NVIDIA copyright header with the year of latest meaningful modification."

tests/integration/defs/stress_test/stress_test.py (2)

527-528: Awkward line break splits config.tp_size across two lines.

While valid Python (the expression is inside parentheses), splitting config.tp_size as config.\n tp_size, harms readability and could be misread as two separate items.

✏️ Suggested formatting fix
-            ep_size=config.
-            tp_size,  # ep_size matches tp_size for DeepSeek models
+            ep_size=config.tp_size,  # ep_size matches tp_size for DeepSeek models

599-626: GPU architecture detection logic is sound.

The MOE backend selection correctly handles Blackwell (DEEPGEMM/CUTEDSL) and implicitly defaults to CUTLASS for Hopper by not setting moe_config. The fallback on failure is safe.

One minor refinement: the broad except Exception (flagged by Ruff BLE001) could be narrowed to (ImportError, RuntimeError) to specifically catch the expected failure modes (torch not installed, CUDA unavailable), while still keeping the safe fallback.

✏️ Optional: narrow the exception scope
-        except Exception as e:
+        except (ImportError, RuntimeError) as e:

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/bot run --disable-fail-fast

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PR_Github #35869 [ run ] triggered by Bot. Commit: ffdc6d0

@dominicshanshan
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/bot run --disable-fail-fast

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PR_Github #35879 [ run ] triggered by Bot. Commit: 5afecec

EmmaQiaoCh and others added 10 commits February 12, 2026 23:00
…10880) (NVIDIA#11056)

Signed-off-by: qqiao <[email protected]>
Signed-off-by: Emma Qiao <[email protected]>
Co-authored-by: Yanchao Lu <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
Signed-off-by: Patrice Castonguay <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
…c with graceful fallbacks (NVIDIA#11042) (NVIDIA#11090)

Signed-off-by: Ludwig Schneider <[email protected]>
Co-authored-by: Ludwig Schneider <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
…NVIDIA#10678)

Signed-off-by: Dan Hansen <[email protected]>
Signed-off-by: dhansen-nvidia <[email protected]>
Co-authored-by: Dan Hansen <[email protected]>
Co-authored-by: Kaiyu Xie <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
… nvfp4 checkpoint in stress test (NVIDIA#10920)

Signed-off-by: Wangshanshan <[email protected]>
mikeiovine and others added 8 commits February 12, 2026 23:00
…ngFace downloads in `with_mocked_hf_download` (NVIDIA#11201)

Signed-off-by: Anish Shanbhag
Signed-off-by: Wangshanshan <[email protected]>
Signed-off-by: yingguo-trt <[email protected]>
Signed-off-by: Wangshanshan <[email protected]>
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/bot run --disable-fail-fast

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PR_Github #35889 [ run ] triggered by Bot. Commit: 46980e6

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