hipsparsexbsrilu02_zeropivot Interface Reference#
hipfort_hipsparse::hipsparsexbsrilu02_zeropivot Interface Reference
Incomplete LU factorization with 0 fill-ins and no pivoting using BSR storage format. More...
Public Member Functions | |
integer(kind(hipsparse_status_success)) function | hipsparsexbsrilu02_zeropivot_ (handle, myInfo, position) |
Detailed Description
Incomplete LU factorization with 0 fill-ins and no pivoting using BSR storage format.
hipsparseXbsrilu02_zeroPivot
returns HIPSPARSE_STATUS_ZERO_PIVOT
, if either a structural or numerical zero has been found during hipsparseXbsrilu02_analysis() or hipsparseXbsrilu02() computation. The first zero pivot \(j\) at \(A_{j,j}\) is stored in position
, using same index base as the BSR matrix.
position
can be in host or device memory. If no zero pivot has been found, position
is set to -1 and HIPSPARSE_STATUS_SUCCESS
is returned instead.
- Note
- If a zero pivot is found,
position
\(=j\) means that either the diagonal block \(A_{j,j}\) is missing (structural zero) or the diagonal block \(A_{j,j}\) is not invertible (numerical zero). -
hipsparseXbsrilu02_zeroPivot
is a blocking function. It might influence performance negatively.
Member Function/Subroutine Documentation
◆ hipsparsexbsrilu02_zeropivot_()
integer(kind(hipsparse_status_success)) function hipfort_hipsparse::hipsparsexbsrilu02_zeropivot::hipsparsexbsrilu02_zeropivot_ | ( | type(c_ptr), value | handle, |
type(c_ptr), value | myInfo, | ||
integer(c_int) | position | ||
) |
The documentation for this interface was generated from the following file: