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Parallel-NetCDF / PnetCDF

Source code repository of PnetCDF library and utilities
https://parallel-netcdf.github.io
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Support MPI derived datatypes of large count #145

Closed wkliao closed 3 months ago

wkliao commented 3 months ago

Starting from MPI 4.0 standard, MPI datatypes can be constructed using the large-count APIs. This PR call MPI_Type_get_envelope_c to check if such datatypes are passed from the users. If yes, it uses the proper datatype metadata to decode.