*Test Class:* test/inductor/test_cutlass_backend.py::TestCutlassBackend
*Failing Tests:* 173
*Error Pattern:* related_issues

1. 1. 1. Description

Summary:
173 test(s) in TestCutlassBackend are failing during PyTorch unit test execution on CPU platform.

Test Class: test/inductor/test_cutlass_backend.py::TestCutlassBackend
Number of Failing Tests: 173
Platform: CPU
Test Type: Unit Test

Version Information:

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

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

Error Patterns:
1.

File "/pytorch/test/inductor/test_cutlass_backend.py", line 1086, in test_aoti_workspace_ptr

2.

ignore[index]

Failing Tests:
1. test_aoti_workspace_ptr
2. test_compilation_time_use_aoti_False
3. test_compilation_time_use_aoti_True
4. test_cutlass_backend_fp8_scaled_mm_fast_accum_filtering
5. test_cutlass_backend_integration
6. test_cutlass_backend_matmul_nonzero_offset
7. test_cutlass_backend_matmul_same_tensor
8. test_cutlass_backend_op_allowlist
9. test_cutlass_backend_op_denylist
10. test_cutlass_backend_shape_coverage_mm
... and 163 more tests

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

   TEST_CONFIG=cpu python3 test/run_test.py -i inductor/test_cutlass_backend
   

3. Observe test failures

Expected Result:
All tests in TestCutlassBackend should pass

Actual Result:
173 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