[https://nvbugs/5823465][fix] Add DEEPGEMM moe backend and deepseek r1 fp4 in stress test

[dominicshanshan]

Summary by CodeRabbit

• Tests
  • Enhanced stress test setup for DeepSeek-V3 and DeepSeek-R1 models with GPU-aware configuration.
  • Added automatic GPU architecture detection to select the appropriate MOE backend based on device capability and checkpoint type during stress test execution.
  • Includes fallback mechanism to default settings if detection is unavailable, with diagnostic logging of detection results and selected backend.

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Description

Test Coverage

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[coderabbitai]

📝 Walkthrough

Walkthrough

Adds GPU-aware MOE backend selection for DeepSeek-V3/DeepSeek-R1 stress tests. Detects CUDA device capability and GPU architecture, then conditionally selects MOE backend (TRTLLM for NVFP4 on Blackwell, DEEPGEMM for FP8 on Blackwell, or defaults to CUTLASS) based on detected checkpoint type, with fallback behavior on detection failure.

Changes

Cohort / File(s)	Summary
GPU-aware MOE backend configuration for stress tests tests/integration/defs/stress_test/stress_test.py	Introduces runtime CUDA device capability detection for DeepSeek models; implements conditional MOE backend selection logic based on GPU architecture (Blackwell SM 10x) and checkpoint type (NVFP4 vs FP8); includes logging of detected architecture and selected backend; falls back to CUTLASS backend with warning on detection failure

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~40 minutes

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description is incomplete - it only contains the template structure without filling in critical sections like Description and Test Coverage.	Complete the Description section explaining the issue and solution, and add Test Coverage section listing relevant tests safeguarding these changes.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main changes: adding DEEPGEMM MOE backend support and FP4 checkpoint handling for DeepSeek-R1 in the stress test, with proper NVBugs ticket format.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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✨ Finishing touches

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[dominicshanshan]

/bot run

[tensorrt-cicd]

PR_Github #33138 [ run ] triggered by Bot. Commit: f723f7a

[tensorrt-cicd]

PR_Github #33138 [ run ] completed with state SUCCESS. Commit: f723f7a
/LLM/release-1.2/L0_MergeRequest_PR pipeline #158 completed with status: 'SUCCESS'

[dominicshanshan]

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

[tensorrt-cicd]

PR_Github #33262 [ run ] triggered by Bot. Commit: f723f7a

[tensorrt-cicd]

PR_Github #33262 [ run ] completed with state ABORTED. Commit: f723f7a

[dominicshanshan]

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

[tensorrt-cicd]

PR_Github #33266 [ run ] triggered by Bot. Commit: f723f7a

[tensorrt-cicd]

PR_Github #33266 [ run ] completed with state DISABLED
CI server is currently disabled for scheduled maintenance. Estimated completion time: 8 PM PST on 1/22.

[dominicshanshan]

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

[ZhanruiSunCh]

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

[tensorrt-cicd]

PR_Github #33280 [ run ] triggered by Bot. Commit: f723f7a

[tensorrt-cicd]

PR_Github #33279 [ run ] triggered by Bot. Commit: f723f7a

[tensorrt-cicd]

PR_Github #33279 [ run ] completed with state DISABLED
CI server is currently disabled for scheduled maintenance. Estimated completion time: 8 PM PST on 1/22.

[tensorrt-cicd]

PR_Github #33280 [ run ] completed with state SUCCESS. Commit: f723f7a
/LLM/release-1.2/L0_MergeRequest_PR pipeline #187 (Partly Tested) completed with status: 'SUCCESS'

[dominicshanshan]

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

[tensorrt-cicd]

PR_Github #33340 [ run ] triggered by Bot. Commit: 1e21364

[tensorrt-cicd]

PR_Github #33340 [ run ] completed with state SUCCESS. Commit: 1e21364
/LLM/release-1.2/L0_MergeRequest_PR pipeline #200 (Partly Tested) completed with status: 'SUCCESS'

[dominicshanshan]

/bot run

[dominicshanshan]

/bot run

[tensorrt-cicd]

PR_Github #33379 [ run ] triggered by Bot. Commit: 1e21364

[tensorrt-cicd]

PR_Github #33379 [ run ] completed with state SUCCESS. Commit: 1e21364
/LLM/release-1.2/L0_MergeRequest_PR pipeline #206 completed with status: 'FAILURE'

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[dominicshanshan]

/bot run

[tensorrt-cicd]

PR_Github #33426 [ run ] triggered by Bot. Commit: 1e21364

[tensorrt-cicd]

PR_Github #33426 [ run ] completed with state SUCCESS. Commit: 1e21364
/LLM/release-1.2/L0_MergeRequest_PR pipeline #214 completed with status: 'SUCCESS'