mpi_test_cancelled(3openmpi) [osx man page]

MPI_Test_cancelled(3OpenMPI)											      MPI_Test_cancelled(3OpenMPI)

NAME

       MPI_Test_cancelled - Tests whether a request was canceled.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Test_cancelled(MPI_Status *status, int *flag)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_TEST_CANCELLED(STATUS, FLAG, IERROR)
	    LOGICAL   FLAG
	    INTEGER   STATUS(MPI_STATUS_SIZE), IERROR

C++ Syntax
       #include <mpi.h>
       bool Status::Is_cancelled() const

INPUT PARAMETER

       status	 Status object (status).

OUTPUT PARAMETERS

       flag	 True if operation was cancelled (logical).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       Returns	flag  = true if the communication associated with the status object was canceled successfully. In such a case, all other fields of
       status (such as count or tag) are undefined. Otherwise, returns flag = false. If a receive operation might be  canceled,  one  should  call
       MPI_Test_cancelled first, to check whether the operation was canceled, before checking on the other fields of the return status.

NOTES

       Cancel can be an expensive operation that should be used only exceptionally.

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++ func-
       tions 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.

Open MPI 1.2							  September 2006				      MPI_Test_cancelled(3OpenMPI)

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MPI_Errhandler_free(3OpenMPI)											     MPI_Errhandler_free(3OpenMPI)

NAME

       MPI_Errhandler_free  - Frees an MPI-style error handler.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Errhandler_free(MPI_Errhandler *errhandler)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_ERRHANDLER_FREE(ERRHANDLER, IERROR)
	    INTEGER   ERRHANDLER, IERROR

C++ Syntax
       #include <mpi.h>
       void Errhandler::Free()

INPUT PARAMETER

       errhandler
		 MPI error handler (handle). Set to MPI_ERRHANDLER_NULL on exit.

OUTPUT PARAMETER

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       Marks  the  error handler associated with errhandler for deallocation and sets errhandler to MPI_ERRHANDLER_NULL. The error handler will be
       deallocated after all communicators associated with it have been deallocated.

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++ func-
       tions  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_Comm_create_errhandler
       MPI_Comm_get_errhandler
       MPI_Comm_set_errhandler

Open MPI 1.2							  September 2006				     MPI_Errhandler_free(3OpenMPI)

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mpi_test_cancelled(3openmpi) [osx man page]

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