MPI_Info_get_nkeys
Returns the number of currently defined keys in info
Synopsis
#include "mpi.h"
int MPI_Info_get_nkeys(MPI_Info info, int *nkeys)
Input Parameters
- info
- info object (handle)
Output Parameters
- nkeys
- number of defined keys (integer)
Notes for Fortran
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.
Location:info_getnks.c