MPI_Group_size(3)

NAME
     MPI_Group_size - Returns the size of a group

SYNOPSIS
     C:

          #include <mpi.h>

          int MPI_Group_size ( group, size )
          MPI_Group group;
          int *size;


     C++:

          #include <mpi.h>

          int Group::Get_size() const


     Fortran:

          INCLUDE "mpif.h" (or USE MPI)

          INTEGER group, size, ierror

          CALL MPI_GROUP_SIZE(group, size, 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_Group_size routine returns the size of a group.  This routine
     accepts the following parameters:

     group     Specifies the group (handle)

     size      Returns the number of processes in the group (integer)

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