MPIX_Comm_translate_ranks

Translates the ranks of processes in one communicator to those in another communicator

Synopsis

int MPIX_Comm_translate_ranks(MPI_Comm comm1, int n, int *ranks1,
                            MPI_Comm comm2, int *ranks2)

Input Parameters

comm1
comm1 (handle)
n
number of ranks in ranks1 and ranks2 arrays (integer)
ranks1
array of zero or more valid ranks in comm1
comm2
comm2 (handle)

Output Parameter

ranks2
array of corresponding ranks in comm2, MPI_UNDEFINED when no correspondence exists.

As a special case, if the input rank is MPI_PROC_NULL, MPI_PROC_NULL is given as the output rank.

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.