MPI_Info_get_nkeys

Langue: en

Version: Mar 18, 2009 (fedora - 05/07/09)

Autres sections - même nom

Section: 3 (Bibliothèques de fonctions)

NAME

MPI_Info_get_nkeys - Gets the number of keys currently defined in an info object.

SYNTAX

C Syntax

 #include <mpi.h>
 int MPI_Info_get_nkeys(MPI_Info info, int *nkeys)
 
 
 

Fortran Syntax

 INCLUDE 'mpif.h'
 MPI_INFO_GET_NKEYS(INFO, NKEYS, IERROR)
         INTEGER         INFO, NKEYS, IERROR 
 
 
 

C++ Syntax

 #include <mpi.h>
 int MPI::Info::Get_nkeys() const
 
 
 

INPUT PARAMETER

info
Info object (handle).

OUTPUT PARAMETERS

nkeys
Number of defined keys (integer).
IERROR
Fortran only: Error status (integer).

DESCRIPTION

MPI_Info_get_nkeys returns the number of currently defined keys in info.

ERRORS

Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI:Exception object.

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.

SEE ALSO

MPI_Info_get
MPI_Info_get_nthkey
MPI_Info_get_valueln