Temporarily exclude GB300 from testing

[KyleFromNVIDIA]

Temporarily exclude GB300 until we resolve outstanding test failures.

#8430

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 4663ca40-7675-4ccd-ab1f-8d6b1e72075e

📥 Commits

Reviewing files that changed from the base of the PR and between 449ece6 and 1be3b68.

📒 Files selected for processing (2)

• .github/workflows/pr.yaml
• .github/workflows/test.yaml

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Updated automated test workflows to skip unsupported GB300 GPU configurations.
  • Applied the adjustment to single-GPU Python and standard wheel test runs.

Walkthrough

The GitHub Actions workflows now exclude gb300 GPU configurations from single-GPU conda tests and wheel tests.

Changes

GPU matrix filters

Layer / File(s)	Summary
Exclude gb300 test configurations .github/workflows/pr.yaml, .github/workflows/test.yaml	The conda-python-tests-singlegpu and wheel-tests-cuml jobs filter out matrix entries whose GPU is gb300.

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

Suggested labels: improvement

Suggested reviewers: jameslamb, bdice

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the temporary exclusion of GB300 from testing, which is the main change.
Description check	✅ Passed	The description explains the temporary GB300 exclusion, gives the reason, and references issue #8430.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[KyleFromNVIDIA]

/merge