test: flaky terminated with signal SIGABRT

[Borda]

What does this PR do?

addressing #20509 (comment)

Before submitting

• Was this discussed/agreed via a GitHub issue? (not for typos and docs)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure to update the documentation with your changes? (if necessary)
• Did you write any new necessary tests? (not for typos and docs)
• Did you verify new and existing tests pass locally with your changes?
• Did you list all the breaking changes introduced by this pull request?
• Did you update the CHANGELOG? (not for typos, docs, test updates, or minor internal changes/refactors)

PR review

Anyone in the community is welcome to review the PR.
Before you start reviewing, make sure you have read the review guidelines. In short, see the following bullet-list:

Reviewer checklist

• Is this pull request ready for review? (if not, please submit in draft mode)
• Check that all items from Before submitting are resolved
• Make sure the title is self-explanatory and the description concisely explains the PR
• Add labels and milestones (and optionally projects) to the PR so it can be classified

---

📚 Documentation preview 📚: https://pytorch-lightning--20537.org.readthedocs.build/en/20537/

[github-actions]

⚡ Required checks status: All passing 🟢

Groups summary

🟢 lightning_fabric: CPU workflow

Check ID	Status
fabric-cpu (macOS-14, lightning, 3.9, 2.1, oldest)	success	✅
fabric-cpu (macOS-14, lightning, 3.10, 2.1)	success	✅
fabric-cpu (macOS-14, lightning, 3.11, 2.2.2)	success	✅
fabric-cpu (macOS-14, lightning, 3.11, 2.3)	success	✅
fabric-cpu (macOS-14, lightning, 3.12.7, 2.4.1)	success	✅
fabric-cpu (macOS-14, lightning, 3.12.7, 2.5.1)	success	✅
fabric-cpu (ubuntu-20.04, lightning, 3.9, 2.1, oldest)	success	✅
fabric-cpu (ubuntu-20.04, lightning, 3.10, 2.1)	success	✅
fabric-cpu (ubuntu-20.04, lightning, 3.11, 2.2.2)	success	✅
fabric-cpu (ubuntu-20.04, lightning, 3.11, 2.3)	success	✅
fabric-cpu (ubuntu-22.04, lightning, 3.12.7, 2.4.1)	success	✅
fabric-cpu (ubuntu-22.04, lightning, 3.12.7, 2.5.1)	success	✅
fabric-cpu (windows-2022, lightning, 3.9, 2.1, oldest)	success	✅
fabric-cpu (windows-2022, lightning, 3.10, 2.1)	success	✅
fabric-cpu (windows-2022, lightning, 3.11, 2.2.2)	success	✅
fabric-cpu (windows-2022, lightning, 3.11, 2.3)	success	✅
fabric-cpu (windows-2022, lightning, 3.12.7, 2.4.1)	success	✅
fabric-cpu (windows-2022, lightning, 3.12.7, 2.5.1)	success	✅
fabric-cpu (macOS-14, fabric, 3.9, 2.1)	success	✅
fabric-cpu (ubuntu-20.04, fabric, 3.9, 2.1)	success	✅
fabric-cpu (windows-2022, fabric, 3.9, 2.1)	success	✅
fabric-cpu (macOS-14, fabric, 3.12.7, 2.5.1)	success	✅
fabric-cpu (ubuntu-22.04, fabric, 3.12.7, 2.5.1)	success	✅
fabric-cpu (windows-2022, fabric, 3.12.7, 2.5.1)	success	✅

These checks are required after the changes to tests/tests_fabric/utilities/test_distributed.py.

🟢 lightning_fabric: Azure GPU

Check ID	Status
lightning-fabric (GPUs) (testing Fabric | latest)	success	✅
lightning-fabric (GPUs) (testing Lightning | latest)	success	✅

These checks are required after the changes to tests/tests_fabric/utilities/test_distributed.py.

---

Thank you for your contribution! 💜

Note
This comment is automatically generated and updates for 60 minutes every 180 seconds. If you have any other questions, contact carmocca for help.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49%. Comparing base (8c2d263) to head (9df656d).
Report is 1 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (8c2d263) and HEAD (9df656d). Click for more details.

HEAD has 568 uploads less than BASE

Flag	BASE (8c2d263)	HEAD (9df656d)
cpu	147	24
lightning	110	19
pytest	73	26
python3.9	36	6
python3.11	36	6
lightning_fabric	19	7
python3.10	18	3
python3.12.7	57	9
pytorch2.1	27	0
pytest-full	76	0
pytorch2.3	9	0
pytorch_lightning	20	0
pytorch2.2.2	9	0
pytorch2.4.1	10	0
pytorch2.5.1	21	0

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #20537     +/-   ##
=========================================
- Coverage      88%      49%    -39%     
=========================================
  Files         267      264      -3     
  Lines       23380    23324     -56     
=========================================
- Hits        20481    11382   -9099     
- Misses       2899    11942   +9043