MPI_Type_get_attr − Returns the attribute associated with a data type.
#include
<mpi.h>
int MPI_Type_get_attr(MPI_Datatype type, int
type_keyval, void *attribute_val, int
*flag)
INCLUDE
’mpif.h’
MPI_TYPE_GET_ATTR(TYPE, TYPE_KEYVAL, ATTRIBUTE_VAL, FLAG,
IERROR)
INTEGER |
TYPE, TYPE_KEYVAL, IERROR |
|||
INTEGER(KIND=MPI_ADDRESS_KIND) ATTRIBUTE_VAL |
||||
LOGICAL FLAG |
#include
<mpi.h>
bool MPI::Datatype::Get_attr(int type_keyval, void*
attribute_val) const
type |
Data type to which the attribute is attached (handle). |
type_keyval
Key value (integer).
attribute_val
Attribute value, unless flag = false
flag |
"false" if no attribute is associated with the key (logical). |
||
IERROR |
Fortran only: Error status (integer). |
For the given data type, MPI_Type_get_attr returns an attribute value that corresponds to the specified key value.
The MPI standard prescribes portable Fortran syntax for the ATTRIBUTE_VAL argument only for Fortran 90. Sun FORTRAN 77 users may use the non-portable syntax
INTEGER*MPI_ADDRESS_KIND ATTRIBUTE_VAL
where MPI_ADDRESS_KIND is a constant defined in mpif.h and gives the length of the declared integer in bytes.
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.