17.2.172. MPI_Get_processor_name

MPI_Get_processor_name - Gets the name of the processor.

17.2.172.1. Syntax

17.2.172.1.1. C Syntax

#include <mpi.h>

int MPI_Get_processor_name(char *name, int *resultlen)

17.2.172.1.2. Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'

MPI_GET_PROCESSOR_NAME(NAME, RESULTLEN, IERROR)
    CHARACTER*(*)   NAME
    INTEGER     RESULTLEN, IERROR

17.2.172.1.3. Fortran 2008 Syntax

USE mpi_f08

MPI_Get_processor_name(name, resultlen, ierror)
    CHARACTER(LEN=MPI_MAX_PROCESSOR_NAME), INTENT(OUT) :: name
    INTEGER, INTENT(OUT) :: resultlen
    INTEGER, OPTIONAL, INTENT(OUT) :: ierror

17.2.172.2. Output Parameters

  • name : A unique specifier for the actual (as opposed to virtual) node.

  • resultlen : Length (in characters) of result returned in name.

  • IERROR : Fortran only: Error status (integer).

17.2.172.3. Description

This routine returns the name of the processor on which it was called at the moment of the call. The name is a character string for maximum flexibility. From this value it must be possible to identify a specific piece of hardware. The argument name must represent storage that is at least MPI_MAX_PROCESSOR_NAME characters long.

The number of characters actually written is returned in the output argument, resultlen.

17.2.172.4. Notes

The user must provide at least MPI_MAX_PROCESSOR_NAME space to write the processor name; processor names can be this long. The user should examine the output argument, resultlen, to determine the actual length of the name.

17.2.172.5. Errors

Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.

Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.