io/romio314: fix minmax datatypes #5068
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@roblatham00 This seems to be enough to fix the issue. |
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romio assumes that all predefined datatypes are contiguous. Because of the (terribly named) composed datatypes MPI_SHORT_INT, MPI_DOUBLE_INT, MPI_LONG_INT, etc this is an incorrect assumption. The simplest way to fix this is to override the MPI_Type_get_envelope and MPI_Type_get_contents calls with calls that will work on these datatypes. Note that not all calls to these MPI functions are replaced, only the ones used when flattening a non-contiguous datatype. References open-mpi#5009 Signed-off-by: Nathan Hjelm <[email protected]>
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I will go ahead and commit this. @roblatham00 Please let me know when you fix this upstream and I will apply that fix to ompi. |
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romio assumes that all predefined datatypes are contiguous. Because of
the (terribly named) composed datatypes MPI_SHORT_INT, MPI_DOUBLE_INT,
MPI_LONG_INT, etc this is an incorrect assumption. The simplest way to
fix this is to override the MPI_Type_get_envelope and
MPI_Type_get_contents calls with calls that will work on these
datatypes. Note that not all calls to these MPI functions are
replaced, only the ones used when flattening a non-contiguous
datatype.
References #5009
Signed-off-by: Nathan Hjelm [email protected]