Support OpenMPI #62
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Support OpenMPI #62
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Jonathanlyj
reviewed
Apr 5, 2025
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This should fix the OpenMPI compatibility issue. mpi4py.MPI are Python-level objects that safely wrap the underlying MPI_Datatype, regardless of whether it is an integer (as in MPICH) or a pointer (as in OpenMPI).
Jonathanlyj
reviewed
Apr 5, 2025
| @@ -28,7 +28,6 @@ cimport numpy | |||
| numpy.import_array() | |||
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| ctypedef MPI.Datatype Datatype | |||
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Is this change necessary to fix the OpenMPI issue? this should just create an alias
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We tested PnetCDF-Python using MPICH only.
This PR adds support for using OpenMPI.
Note some data objects defined in mpich are different between MPICH and OpenMPI.
For example, MPI_CHAR is a C constant in MPICH and enurm in OpenMPI.
MPI_Comm is an int in MPICH and struct pointer in OpenMPI.