MPI_GROUP_RANK, MPI_Group_rank

Purpose

Returns the rank of the local task with respect to group.

C synopsis

#include <mpi.h>
int MPI_Group_rank(MPI_Group group,int *rank);

C++ synopsis

#include mpi.h
int MPI::Group::Get_rank() const;

FORTRAN synopsis

include 'mpif.h' or use mpi
MPI_GROUP_RANK(INTEGER GROUP,INTEGER RANK,INTEGER IERROR)

Parameters

group
     is the group (handle) (IN)

rank
     is an integer that specifies the rank of the calling task in group or
     MPI_UNDEFINED if the task is not a member. (OUT)

IERROR
     is the FORTRAN return code. It is always the last argument.

Description

This subroutine returns the rank of the local task with respect to group.
This local operation does not require any intertask communication.

Errors

Invalid group

MPI not initialized

MPI already finalized

Related information