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io/romio314: fix minmax datatypes #5068

Merged
merged 1 commit into from
Apr 16, 2018
Merged

io/romio314: fix minmax datatypes #5068

merged 1 commit into from
Apr 16, 2018

Commits on Apr 13, 2018

  1. io/romio314: fix minmax datatypes 

    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]>
    @hjelmn
    hjelmn committed Apr 13, 2018
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