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@raffenet raffenet released this 28 Jan 16:38
· 1423 commits to main since this release
v4.1
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Learn about vigilant mode.

Changes in 4.1

  • Thread-cs in ch4 changed to per-vci.

  • Testsuite (test/mpi) is configured separately from mpich configure.

  • Added options in autogen to accelerate CI builds, including using pre-built
    sub-modules. Added -yaksa-depth option to generate shallower yaksa pup code
    for faster build and smaller binaries.

  • Support singleton init using hydra.

  • On OSX, link option flat_namespace is no longer turned on by default.

  • Generate mpi.mod Fortran interfaces using Python 3. For many compilers,
    including gfortran, flags such as -fallow-mismatched-args is no longer
    necessary.

  • Fixed message queue debugger interface in ch4.

  • PMI (src/pmi) is refactored as a subdir and can be separately distributed.

  • Added MPIX_Comm_get_failed.

  • Experimental MPIX stream API to enable explicit thread contexts.

  • Experimental MPIX gpu enqueue API. It currently only supports CUDA streams.

  • Delays GPU resource allocation in yaksa.

  • CH3 nemesis ofi netmod is removed.

  • New collective algorithms. All collective algorithms are listed in
    src/mpi/coll/coll_algorithms.txt

  • Removed hydra2. We will port unique features of hydra2, including
    tree-launching, to hydra in the future release.

  • Added in-repository wiki documentation.

  • Added stream workq to support optimizations for enqueue operations.

  • Better support for large count APIs by eliminating type conversion issues.

  • Hydra now uses libpmi (src/pmi) for handling PMI messages.

  • Many bug fixes and enhancements.

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