*Test Class:* test/test_dataloader.py::TestDataLoaderPersistentWorkers
*Failing Tests:* 2
*Error Pattern:* related_issues

1. 1. 1. Description

Summary:
2 test(s) in TestDataLoaderPersistentWorkers are failing during PyTorch unit test execution on sGPU platform.

Test Class: test/test_dataloader.py::TestDataLoaderPersistentWorkers
Number of Failing Tests: 2
Platform: sGPU
Test Type: Unit Test

Version Information:

• PyTorch Commit: 4816fd9
• Test Date: 2025-12-22
• Pipeline ID: 2217097191
• Platform: sGPU

Failure Pattern:
Tests failing with 2 related error patterns - likely common root cause

Error Patterns:
1.

File "/pytorch/test/test_dataloader.py", line 1956, in test_multiprocessing_iterdatapipe

2.

Caught ValueError in DataLoader worker process 0.

Failing Tests:
1. test_multiprocessing_iterdatapipe
2. test_segfault

Steps to Reproduce:
1. Pull the PyTorch test image
2. Run the failing test class:

   TEST_CONFIG=cuda python3 test/run_test.py -i test_dataloader
   

3. Observe test failures

Expected Result:
All tests in TestDataLoaderPersistentWorkers should pass

Actual Result:
2 test(s) failing with errors shown above

Logs:
Pipeline ID: 2217097191
CI Artifacts: Available in pipeline artifacts

Additional Context:
Test failures identified in automated PyTorch CI run.

Severity: Medium
Priority: P3