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todo.md

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  • Supporting hosts that use Slurm (install munge and PMIx 3.2.2 or newer --with-munge).

  • Document building containers using MPICH instead of Open MPI (probably MVAPICH).

  • Update to use UCX (and libfabric?).

    See Running UCX for more info.

    Add --mca pml_base_verbose 100 to verbosity options (to check if UCX is actually used).

    Explain the use of ucx_info -d and setting environment variables to force it to use a certain device.

    Build Open MPI --without-verbs to avoid an error message about device initialization:

    --------------------------------------------------------------------------
    WARNING: There was an error initializing an OpenFabrics device.

      Local host:   chinook01
      Local device: mlx4_0
    --------------------------------------------------------------------------
  • Make sure that the list of packages in base.def does not include anything unnecessary.