Add mcoplib mcoplib profiler bool env

[ghangz]

Summary

• Adds a focused mcoplib profiler bool env improvement for MetaX-MACA/mcoplib.
• The change targets MetaX MACA development and validation workflows, with emphasis on earlier diagnostics, reproducible logs, or safer benchmark tooling.
• Existing default behavior is kept compatible; the new logic is scoped to explicit checks, helper tools, or validation metadata.

Validation

• Verified on Gitee.AI MetaX GPU resources: mcoplib_McFlashInfer_TileLang_20260701, mcoplib and McFlashInfer batch 18/18 PASS.
• Branch validation command: python -m pytest unit_test/test_profiler_env.py
• Pull request text is intentionally ASCII-only to avoid encoding issues on web forms and API clients.

Review notes

• Source branch: ghangz:mengz/mcoplib-profiler-bool-env
• Target branch: MetaX-MACA/mcoplib:main
• Maintainers can modify this branch if follow-up adjustments are needed.

[gemini-code-assist]

Code Review

This pull request updates the _is_profiler_enabled function in mcoplib/profiler.py to support a wider range of falsy environment variable values (such as 'false', 'off', and 'no') and adds corresponding unit tests. The feedback suggests simplifying the implementation by removing the redundant try-except block and str() conversion, since the environment variable is guaranteed to be a string.

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[gemini-code-assist]

The try-except block and the str(v) conversion are redundant here. Since os.getenv is called with a default string value of "1", v is guaranteed to be a string. String operations like .strip() and .lower() as well as the set membership check will not raise any exceptions under normal execution. Removing the redundant try-except block and str() conversion simplifies the code and improves readability.

    v = os.getenv("PROFILER_ENABLED", "1")
    return v.strip().lower() not in {"0", "false", "off", "no"}