MPI_InitializedIndicates whether MPI_Init has been called.
#include "mpi.h" int MPI_Initialized( flag ) int *flag;
- Flag is true if MPI_Init has been called and false otherwise.
Notes for FortranAll 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.