[mlubin]

Similar issues as in #2200.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Source mode: Auto
• Repository: NVIDIA/cuopt
• Branch: main
• File: .coderabbit.yaml
• Commit: 6cce8f7
• Layers: Repository YAML
• Review profile: CHILL
• Plan: Enterprise
• Run ID: 6f1115e6-9f2d-4253-9ce5-b493e6f6c019

📥 Commits

Reviewing files that changed from the base of the PR and between d0a6dc9 and 782f16c.

📒 Files selected for processing: 1

• cpp/src/barrier/cusparse_info.hpp

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📝 Walkthrough

The cuSPARSE info constructor now initializes alpha and beta to one on the handle stream. The PDLP restart strategy now uses cub::DeviceTransform::Fill to set its device-side iteration count.

Changes: cuSPARSE Scalar Initialization

Layer / File(s)	Summary
Initialize cuSPARSE scalars cpp/src/barrier/cusparse_info.hpp	The constructor initializes alpha and beta to one on the handle stream and removes the subsequent asynchronous writes.

PDLP Iteration Counter Update

Layer / File(s)	Summary
Fill the iteration counter cpp/src/pdlp/restart_strategy/weighted_average_solution.cu	set_iterations_since_last_restart uses cub::DeviceTransform::Fill for the device-side count. The host-side assignment is unchanged.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Suggested reviewers: chris-maes, bubullzz

Merge Risk: ⚪ Minimal · up to 782f1

No current-PR merge-blocking risk was verified.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Title check		The title clearly identifies fixes for reference lifetime issues related to set_value_async, which matches the changes.
Description check		The description links the changes to similar issues in #2200, so it is related to the changeset.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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[mlubin]

/ok to test d0a6dc9

[mlubin]

/ok to test 782f16c

[github-actions]

CI Test Summary

1 failed · 20 passed · 0 skipped

• wheel-tests-cuopt-server / 13.3.0, 3.14, amd64, ubuntu24.04, h100, latest-driver, latest-deps — failed; no test names found in log (job log)

[mlubin]

/merge