MPI_Comm_rank(3)

NAME
     MPI_Comm_rank - Determines the rank of the calling process in the
     communicator

SYNOPSIS
     C:

          #include <mpi.h>

          int MPI_Comm_rank ( comm, rank )
          MPI_Comm  comm;
          int      *rank;


     C++:

          #include <mpi.h>

          int Comm::Get_rank() const


     Fortran:

          INCLUDE "mpif.h" (or USE MPI)

          INTEGER comm, rank, ierror

          CALL MPI_COMM_RANK(comm, rank, ierror)


STANDARDS
     This release implements the MPI 1.2 standard, as documented by the MPI
     Forum in the spring 1997 release of MPI:  A Message Passing Interface
     Standard.

DESCRIPTION
     The MPI_Comm_rank routine determines the rank of the calling process in
     the communicator.  This routine accepts the following parameters:

     comm      Specifies the communicator (handle)

     rank      Returns the rank of the calling process in the group of comm
               (integer)

     ierror    Specifies the return code value for successful completion,
               which is in MPI_SUCCESS.  MPI_SUCCESS is defined in the mpif.h
               file.