Hi Martin,
I haven't run into your MPI_File_open issue (don't use it), but
your code does fail for me too in the same way.
$> mpirun -np 1 -H localhost:1 ./fmpitest
fmpitest:/usr/local/lib/libmpi.so.5.0: ./fmpitest : WARNING:
symbol(mpi_fortran_statuses_ignore_) size mismatch,
relink your program
fmpitest:/usr/local/lib/libmpi.so.5.0: ./fmpitest : WARNING:
symbol(mpi_fortran_status_ignore_) size mismatch,
relink your program
The Fortran symbol error you see is common and I'm not sure of the
cause. I did look into it at one point and decided all definitions were
in fact identical, so it might be a weird compiler+linker issue.
It's never been symptomatic beyond the warning so I ignore it.
--John
