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MPI_Comm_remote_size.3.rst

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MPI_Comm_remote_size

:ref:`MPI_Comm_remote_size` |mdash| Determines the size of the remote group associated with an intercommunicator.

SYNTAX

C Syntax

#include <mpi.h>

int MPI_Comm_remote_size(MPI_Comm comm, int *size)

Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_COMM_REMOTE_SIZE(COMM, SIZE, IERROR)
     INTEGER COMM, SIZE, IERROR

Fortran 2008 Syntax

USE mpi_f08
MPI_Comm_remote_size(comm, size, ierror)
     TYPE(MPI_Comm), INTENT(IN) :: comm
     INTEGER, INTENT(OUT) :: size
     INTEGER, OPTIONAL, INTENT(OUT) :: ierror

INPUT PARAMETER

  • comm: Communicator (handle).

OUTPUT PARAMETERS

  • size: Number of processes in the remote group of comm (integer).
  • ierror: Fortran only: Error status (integer).

DESCRIPTION

:ref:`MPI_Comm_remote_size` determines the size of the remote group associated with an intercommunicator.

The intercommunicator accessors (:ref:`MPI_Comm_test_inter`, :ref:`MPI_Comm_remote_size`, MPI_Comm_remote_group) are all local operations.

ERRORS

.. seealso::
   * :ref:`MPI_Comm_test_inter`
   * :ref:`MPI_Comm_remote_group`
   * :ref:`MPI_Intercomm_create`
   * :ref:`MPI_Intercomm_merge`