MPI_Comm_remote_size(3) MPI MPI_Comm_remote_size(3)NAMEMPI_Comm_remote_size - Determines the size of the remote group asso‐
ciated with an inter-communictor
SYNOPSIS
int MPI_Comm_remote_size(MPI_Comm comm, int *size)
INPUT PARAMETER
comm - communicator (handle)
OUTPUT PARAMETER
size - number of processes in the remote group of comm (integer)
THREAD AND INTERRUPT SAFETY
This routine is both thread- and interrupt-safe. This means that this
routine may safely be used by multiple threads and from within a signal
handler.
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 com‐
municators), 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 prede‐
fined 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 commu‐
nicator in a call (not even allowed in MPI_Comm_rank ).
MPI_ERR_ARG
- Invalid argument. Some argument is invalid and is not identi‐
fied by a specific error class (e.g., MPI_ERR_RANK ).
LOCATION
comm_remote_size.c
3/24/2011 MPI_Comm_remote_size(3)