hipsparsexcsrsv2_zeropivot Interface Reference

hipsparsexcsrsv2_zeropivot Interface Reference#

HIPFORT API Reference: hipfort_hipsparse::hipsparsexcsrsv2_zeropivot Interface Reference

Sparse triangular solve using CSR storage format. More...

Public Member Functions
integer(kind(hipsparse_status_success)) function	hipsparsexcsrsv2_zeropivot_ (handle, myInfo, position)

Detailed Description

Sparse triangular solve using CSR storage format.

hipsparseXcsrsv2_zeroPivot returns HIPSPARSE_STATUS_ZERO_PIVOT, if either a structural or numerical zero has been found during hipsparseScsrsv2_solve(), hipsparseDcsrsv2_solve(), hipsparseCcsrsv2_solve() or hipsparseZcsrsv2_solve() computation. The first zero pivot \(j\) at \(A_{j,j}\) is stored in position, using same index base as the CSR 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: hipsparseXcsrsv2_zeroPivot is a blocking function. It might influence performance negatively.

Member Function/Subroutine Documentation