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NAME

       MPI_Comm_spawn_multiple -  short description

SYNOPSIS

       int MPI_Comm_spawn_multiple(int count, char *array_of_commands[],
                                   char **array_of_argv[], const int array_of_maxprocs[],
                                   const MPI_Info array_of_info[], int root, MPI_Comm comm,
                                   MPI_Comm * intercomm, int array_of_errcodes[])

INPUT PARAMETERS

       count  - number of commands (positive integer, significant to MPI only at root
       array_of_commands
              - programs to be executed (array of strings, significant only at root)
       array_of_argv
              - arguments for commands (array of array of strings, significant only at root)
       array_of_maxprocs
              -  maximum  number  of  processes  to  start  for  each  command (array of integer,
              significant only at root)
       array_of_info
              - info objects telling the runtime system where and how to start  processes  (array
              of handles, significant only at root)
       root   - rank of process in which previous arguments are examined (integer)
       comm   - intracommunicator containing group of spawning processes (handle)

OUTPUT PARAMETERS

       intercomm
              - intercommunicator between original group and newly spawned group (handle)
       array_of_errcodes
              - one error code per process (array of integer)

NOTES FOR FORTRAN

       All  MPI  routines  in  Fortran  (except  for MPI_WTIME and MPI_WTICK ) have an additional
       argument ierr at the end of the argument list.  ierr  is  an  integer  and  has  the  same
       meaning  as  the  return  value  of  the  routine  in  C.   In  Fortran,  MPI routines are
       subroutines, and are invoked with the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.

ERRORS

       All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value;  C  routines  as
       the  value of the function and Fortran routines in the last argument.  Before the value is
       returned, the current MPI error handler is called.  By default, this error handler  aborts
       the  MPI  job.   The  error  handler  may  be  changed  with  MPI_Comm_set_errhandler (for
       communicators), MPI_File_set_errhandler (for files), and MPI_Win_set_errhandler  (for  RMA
       windows).   The  MPI-1  routine  MPI_Errhandler_set may be used but its use is deprecated.
       The predefined error handler MPI_ERRORS_RETURN may be used to cause  error  values  to  be
       returned.   Note  that  MPI  does  not  guarentee that an MPI program can continue past an
       error; however, MPI implementations will attempt to continue whenever possible.

       MPI_SUCCESS
              - No error; MPI routine completed successfully.
       MPI_ERR_COMM
              - Invalid communicator.  A common error is to use a null  communicator  in  a  call
              (not even allowed in MPI_Comm_rank ).
       MPI_ERR_ARG
              -  Invalid  argument.  Some argument is invalid and is not identified by a specific
              error class (e.g., MPI_ERR_RANK ).
       MPI_ERR_INFO
              - Invalid Info
       MPI_ERR_SPAWN
              -

                                            11/21/2018                 MPI_Comm_spawn_multiple(3)