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[https://nvbugs/6159132][fix] Differentiate the two paths via extra_acc_spec="tp_attn" when attention_dp=False#13922

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[https://nvbugs/6159132][fix] Differentiate the two paths via extra_acc_spec="tp_attn" when attention_dp=False#13922
tensorrt-cicd wants to merge 1 commit intoNVIDIA:mainfrom
tensorrt-cicd:repair-bot-bug6159132

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Summary

  • Root cause: The GSM8K reference accuracy (93.75) for MiniMax-M2 FP8_BLOCK_SCALES was set based on the attention_dp=True path, but the attention_dp=False path uses the fused minimax_allreduce_rms_qk kernel whose numerics produce ~90.49, below the derived threshold of 90.547.
  • Fix: Differentiate the two paths via extra_acc_spec="tp_attn" when attention_dp=False, add a dedicated reference entry of 92.0 in gsm8k.yaml (threshold 88.797), and remove the existing waiver.
  • Automated fix generated by repair-bot

Test plan

  • Verify fix on the same GPU type as the original failure
  • Check for regressions in related tests

Links

…ion path

The attention_dp=False variant of TestMiniMaxM2::test_4gpus uses the fused
minimax_allreduce_rms_qk kernel for QK norm, which is numerically less
precise than the per-rank RMSNorm path selected by attention_dp=True.
The shared reference of 93.75 resulted in a threshold of 90.547 while
the observed accuracy on the TP-sharded path is ~90.49, causing flaky
failures. Differentiate the two paths via extra_acc_spec='tp_attn' and
register a lower reference (92.0) for the TP-sharded path.

Signed-off-by: tensorrt-cicd <90828364+tensorrt-cicd@users.noreply.github.com>
@tensorrt-cicd tensorrt-cicd requested a review from a team as a code owner May 8, 2026 21:12
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coderabbitai Bot commented May 8, 2026

Review Change Stack
No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

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Plan: Enterprise

Run ID: 88195fe7-e50b-4d9a-b0d8-1bc3af117f37

📥 Commits

Reviewing files that changed from the base of the PR and between f8572ab and 17de91f.

📒 Files selected for processing (3)
  • tests/integration/defs/accuracy/references/gsm8k.yaml
  • tests/integration/defs/accuracy/test_llm_api_pytorch.py
  • tests/integration/test_lists/waives.txt
💤 Files with no reviewable changes (1)
  • tests/integration/test_lists/waives.txt

📝 Walkthrough

Walkthrough

This PR fixes MiniMax-M2 TP-sharded accuracy testing by adding a baseline accuracy reference with corrected quantization configuration, modifying the test to conditionally specify the TP-attention extra_acc_spec parameter based on the attention_dp flag, and removing the associated test waiver.

Changes

MiniMax-M2 TP-Sharded Accuracy Testing

Layer / File(s) Summary
Accuracy Baseline Reference
tests/integration/defs/accuracy/references/gsm8k.yaml
Adds FP8_BLOCK_SCALES quantization accuracy entry with extra_acc_spec: tp_attn configuration, setting expected accuracy to 92.0 for MiniMax-M2.
Test Implementation
tests/integration/defs/accuracy/test_llm_api_pytorch.py
Updates TestMiniMaxM2.test_4gpus to conditionally pass extra_acc_spec="tp_attn" when attention_dp is disabled, with comment documenting TP-sharded fused-kernel numerics differences.
Test Waiver Removal
tests/integration/test_lists/waives.txt
Removes skip waiver for TestMiniMaxM2::test_4gpus[attention_dp=False-...] since the test should now pass with corrected extra_acc_spec handling.

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (1 warning, 1 inconclusive)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check ❓ Inconclusive The PR description explains the root cause, solution, test plan, and provides a bug link, but does not follow the template structure with explicit Description, Test Coverage, and Checklist sections. Reformat the description to follow the template structure: add a Description section, clarify Test Coverage section, and include the PR Checklist with checkmarks.
✅ Passed checks (3 passed)
Check name Status Explanation
Title check ✅ Passed The title clearly and specifically describes the main change: differentiating two execution paths using extra_acc_spec="tp_attn" when attention_dp=False.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.

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