MPI Subroutine Reference

MPI_COMM_REMOTE_SIZE, MPI_Comm_remote_size

Purpose

Returns the size of the remote group of an intercommunicator.

C synopsis

#include <mpi.h>
int MPI_Comm_remote_size(MPI_Comm comm,int *size);

C++ synopsis

#include mpi.h
int MPI::Intercomm::Get_remote_size() const;

FORTRAN synopsis

include 'mpif.h' or use mpi
MPI_COMM_REMOTE_SIZE(INTEGER COMM,INTEGER SIZE,INTEGER IERROR)

Parameters

comm

is the intercommunicator (handle) (IN)

size

is an integer specifying the number of tasks in the remote group of comm. (OUT)

IERROR

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

Description

This subroutine is a local operation that returns the size of the remote group of an intercommunicator.

Notes

To determine the size of the local group of an intercommunicator, use MPI_COMM_SIZE.

Errors

Invalid communicator

Invalid communicator type

it must be intercommunicator

MPI not initialized

MPI already finalized

Related information

MPI_COMM_SIZE