[PyTorch] Fix crash during program shutdown if initialize_ub is called

[anderson101866]

• Given there are some python wrapper object generated by pybind, for C++ API to calls via std::function to python method,
• These python wrapper object are associated with the struct C

BEFORE: The static C struct is destoryed too late at the program exit. It seems fail to free these wrapper because most python-related object has gone.(like GIL)

AFTER: Associate the C struct with module, so that it can be released at the time module been freed.
Signed-off-by: Anderson Meng [email protected]

Description

Please include a brief summary of the changes, relevant motivation and context.

Fixes # (issue)

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Infra/Build change
• Code refractor

Changes

Please list the changes introduced in this PR:

• Make UB GEMM can gracefully exit w/o forcely os._exit()
• Remove os._exit() in examples/tests

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes