Bump mpi4py from 4.0.1 to 4.1.0

[dependabot]

Bumps mpi4py from 4.0.1 to 4.1.0.

Release notes

Sourced from mpi4py's releases.

4.1.0

• New features:

  • Publish binary wheel packages on PyPI with support for multiple operating systems (Linux, macOS, Windows), processor architectures (AMD64, ARM64), MPI implementations (MPICH, Open MPI, and their ABI-compatible derivatives), and Python implementations (CPython, PyPy).
  • Add support for the MPI 5.0 standard.
    • MPI handle serialization with integral values.
    • Fixed-size Fortran LOGICAL datatypes.
    • Query ABI version/info and Fortran ABI info.
  • MPI.Datatype.Create_contiguous now uses BigMPI's approach when using MPI implementations that do not yet support the MPI 4.0 large-count APIs.
  • Add support for MPI.FLOAT16_T and MPI.BFLOAT16_T datatypes. These datatypes are not yet standard but available as extensions in MPI implementations.
  • Add MPI.Status.tomemory to expose the status contents as a memoryview object.

• Enhancements:

  • Support (opt-in via MPI4PY_BUILD_PYSABI) for building with Py_LIMITED_API under Python 3.10+ (requires Cython 3.1+).
  • Support (opt-in via MPI4PY_BUILD_MPIABI) for building with the MPI 5.0 standard ABI and the MPICH or Open MPI legacy ABIs. The MPI extension module will be able to dynamically link at runtime with older versions (down to the MPI 3.0 standard) of the MPI implementation used at compile time. Only available on Linux, macOS, and Windows.
  • Support a buffersize parameter in the MPIPoolExecutor.map() and MPIPoolExecutor.starmap() methods to limit the number of pending tasks.
  • Improve ownership management of DLPack capsules.
  • Reimplement MPI DLL search path on Windows.
  • Minor fixes to typing stubs and documentation.

• Backward-incompatible changes:

  • Python 3.8+ is required.
  • The MPI.Exception class is now a heap type.
  • The types of the MPI.BOTTOM, MPI.IN_PLACE, and MPI.BUFFER_AUTOMATIC are no longer subclasses of int.

4.0.3

• Fix DLPack v1.0 support.

4.0.2

• Support MPI-4 features within Intel MPI 2021.14.

• Various fixes and updates to tests.

• Minor fixes to typing support.

• Minor fix to documentation.

Changelog

Sourced from mpi4py's changelog.

Release 4.1.0 [2025-06-25]

• New features:

  • Publish binary wheel packages on PyPI_ with support for multiple operating systems (Linux, macOS, Windows), processor architectures (AMD64, ARM64), MPI implementations (MPICH, Open MPI, and their ABI-compatible derivatives), and Python implementations (CPython, PyPy).

    .. _PyPI: https://pypi.org/project/mpi4py/#files

  • Add support for the MPI 5.0 standard.

    • MPI handle serialization with integral values.
    • Fixed-size Fortran LOGICAL datatypes.
    • Query ABI version/info and Fortran ABI info.

  • MPI.Datatype.Create_contiguous now uses BigMPI_'s approach when using MPI implementations that do not yet support the MPI 4.0 large-count APIs.

  .. _BigMPI: https://doi.org/10.1109/ExaMPI.2014.5

  • Add support for MPI.FLOAT16_T and MPI.BFLOAT16_T datatypes. These datatypes are not yet standard but available as extensions in MPI implementations.

  • Add MPI.Status.tomemory to expose the status contents as a memoryview object.

• Enhancements:

  • Support (opt-in via MPI4PY_BUILD_PYSABI) for building with Py_LIMITED_API under Python 3.10+ (requires Cython 3.1+).

  • Support (opt-in via MPI4PY_BUILD_MPIABI) for building with the MPI 5.0 standard ABI and the MPICH or Open MPI legacy ABIs. The MPI extension module will be able to dynamically link at runtime with older versions (down to the MPI 3.0 standard) of the MPI implementation used at compile time. Only available on Linux, macOS, and Windows.

  • Support a buffersize parameter in the MPIPoolExecutor.map() and MPIPoolExecutor.starmap() methods to limit the number of pending tasks.

  • Improve ownership management of DLPack capsules.

... (truncated)

Commits

• 23bbd37 Bump version number to 4.1.0
• a86f2d1 chore: Update changelog
• 001040c docs: Update install instructions
• ea62099 lint: Update pre-commit ruff
• 6fb6bc4 build: Update for Intel MPI 2021.16
• d0a980f GHA: Update MPICH version in ABI tests
• 3485d60 GHA: Add CPython 3.13 free-threading
• 992e405 GHA: Rename workflow dist -> release
• 5d7b80f Azure Pipelines: Upgrade to Windows-2022
• 529c6f5 GHA: Remove PyPy 3.9
• Additional commits viewable in compare view

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[jan-janssen]

@dependabot rebase

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.16%. Comparing base (c9de13a) to head (7f44902).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #690   +/-   ##
=======================================
  Coverage   98.16%   98.16%           
=======================================
  Files          34       34           
  Lines        1686     1686           
=======================================
  Hits         1655     1655           
  Misses         31       31           

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