Problem

Test test_cpp_extensions_jit::test_jit_cudnn_extension fails on RHEL 9.6 due to cuDNN C++ extension JIT compilation issues.

Root Cause (Suspected)

• cuDNN header/library version mismatch
• JIT compilation environment issues specific to RHEL 9.6
• CUDA toolkit configuration problems
• C++ compiler flags incompatibility with GCC 11

Impact

• Tests failing: 1
• Severity: Very Low - Advanced feature rarely used in production
• Production impact: None - JIT extension compilation is optional

Current Workaround

Test excluded in workflow configuration

Acceptance Criteria

• [ ] Root cause identified with detailed error analysis
• [ ] cuDNN extension compiles successfully via JIT
• [ ] test_jit_cudnn_extension passes on RHEL

References

• Workflow run: https://github.com/subinz1/pytorch/actions/runs/20745368086
• Documentation: 5_SHARD_FAILURE_SUMMARY.md