[https://nvbugs/6541322][fix] Unwaive fixed test

[2ez4bz]

Dev Engineer Review

• The PR adds a Mamba-specific zero-token constraint for hybrid-model state-slot sizing when avg_seq_len is unset.
• The constraint preserves one SSM state slot for each resident or dummy sequence.
• The targeted constraint avoids changing the initial pool ratio and prevents regressions in Gemma 4 pool sizing and performance.
• TEP and DEP sizing use the real allocator.
• The change does not restore the generic warmup constraint, which would regress existing pool sizing.
• The DEP test waiver was removed with its associated bug reference.
• No public or exported entities changed.

QA Engineer Review

• Modified test-list file: tests/integration/test_lists/waives.txt.
• Removed waiver: accuracy/test_llm_api_pytorch.py::TestQwen3NextInstruct::test_bf16_4gpu[dep4].
• No test code changed.
• CBTS coverage data is unavailable.

Verdict: needs follow-up

Description

Commit 7f7dccf added an explicit SSM min-slot floor which fixes the
regression introduced by a1e5771.

Test Coverage

PR Checklist

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[coderabbitai]

Walkthrough

The integration test waiver for TestQwen3NextInstruct::test_bf16_4gpu[dep4] was removed from waives.txt.

Changes

Cohort / File(s)	Summary
Integration test waiver tests/integration/test_lists/waives.txt	Removes the skipped test entry and its associated bug reference.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• NVIDIA/TensorRT-LLM#17041: Modifies the same Qwen3NextInstruct waiver.
• NVIDIA/TensorRT-LLM#17045: Modifies the same waiver list for test-specific entries.

Suggested reviewers: bowenfu, lowsfer, eopxd

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.
Title check	✅ Passed	The title clearly identifies the NVBugs fix and the removal of the waiver for the repaired test.
Description check	✅ Passed	The description explains the fix and includes the checklist, but the Test Coverage section is empty.

✨ Finishing Touches

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@tests/unittest/_torch/executor/test_mamba_cache_manager.py`:
- Around line 1311-1313: Update
test_v2_hybrid_default_preserves_live_state_slot_floor by annotating
num_reserved_dummy_slots and expected_num_slots as int and the function return
type as None.
- Around line 1305-1355: Add test-list entries for
test_v2_hybrid_default_preserves_live_state_slot_floor and
test_v2_hybrid_typical_batch_splits_capacity_across_ssm_states_and_dummies in
the appropriate test-db and/or qa list under tests/integration/test_lists.
Ensure both newly covered tests are registered using the existing list format.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

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Plan: Enterprise

Run ID: e356549f-f013-4718-bfec-95dd8b5af9ad

📥 Commits

Reviewing files that changed from the base of the PR and between 066bab1 and 5337896.

📒 Files selected for processing (3)

• tensorrt_llm/_torch/pyexecutor/mamba_cache_manager.py
• tests/integration/test_lists/waives.txt
• tests/unittest/_torch/executor/test_mamba_cache_manager.py

💤 Files with no reviewable changes (1)

• tests/integration/test_lists/waives.txt

[2ez4bz]

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PR_Github #63091 [ run ] triggered by Bot. Commit: cd5b4e4 Link to invocation

[tensorrt-cicd]

PR_Github #63091 [ run ] completed with state SUCCESS. Commit: cd5b4e4
/LLM/main/L0_MergeRequest_PR pipeline #51180 completed with status: 'SUCCESS'

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[BowenFu]

Root cause checks out: a1e5771 dropped the default warmup constraints when `avg_seq_len` is unset, and 7f7dccf restores an explicit floor (`mamba_cache_manager.py`, `ssm_floor_slots = _max_resident_sequences() + _num_reserved_dummy_slots`) — that is the invariant that was missing, not a workaround.

Two notes, neither blocking:

• This test is post-merge-only (`l0_dgx_h200.yml:42`, `l0_gb200_multi_gpus.yml:86`), so the green `/bot run` here did not execute it. What covers the gap is your verification on main plus the repair-bot run on HEAD recorded in nvbugs/6541322.
• #17150 removes the identical line. Worth closing one of the two before either lands.