DOKK / manpages / debian 12 / mpich-doc / MPI_File_set_atomicity.3.en
MPI_File_set_atomicity(3) MPI MPI_File_set_atomicity(3)

MPI_File_set_atomicity - Sets the atomicity mode

int MPI_File_set_atomicity(MPI_File fh, int flag)

- file handle (handle)
- true to set atomic mode, false to set nonatomic mode (logical)

All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have an additional argument ierr at the end of the argument list. ierr is an integer and has the same meaning as the return value of the routine in C. In Fortran, MPI routines are subroutines, and are invoked with the call statement.

All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.

2/21/2022