Q: MPI-IO hint to disable/enable data sieving

[wkliao]

We are developers of Darshan and encountering a data sieving error that looks like has been fixed in 5.0.6 (most likely in PR https://github.com/open-mpi/ompi/pull/12759).

We assume this bug can be avoided by disabling data sieving when using 5.0.5 and earlier versions.

If that is the case, our question is how we can disable data sieving through a hint, i.e. by setting such hint in an MPI info object and pass it to MPI_File_open so it takes effect on one file only.

cc @carns