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Don't let ROMIO mishandle the displacement for contiguous data with a non-zero

true_lb. Thanks to Pascal Deveze for the patch.

This commit was SVN r22864.
Этот коммит содержится в:
George Bosilca 2010-03-23 01:23:45 +00:00
родитель 136f926fd1
Коммит c0ff44b9fe

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@ -131,6 +131,16 @@ void ADIOI_Datatype_iscontig(MPI_Datatype datatype, int *flag)
* Open MPI contiguous check return true for datatype with
* gaps in the beginning and at the end. We have to provide
* a count of 2 in order to get these gaps taken into acount.
* In addition, if the data is contiguous but true_lb differes
* from zero, ROMIO will ignore the displacement. Thus, lie!
*/
*flag = ompi_datatype_is_contiguous_memory_layout(datatype, 2);
if (*flag) {
MPI_Aint true_extent, true_lb;
ompi_datatype_get_true_extent(datatype, &true_lb, &true_extent);
if (true_lb > 0)
*flag = 0;
}
}