rocsolver_sgetrf_npvt Interface Reference#
GETRF_NPVT computes the LU factorization of a general m-by-n matrix A without partial pivoting. More...
Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocsolver_sgetrf_npvt_ (handle, m, n, A, lda, myInfo) |
| integer(kind(rocblas_status_success)) function | rocsolver_sgetrf_npvt_full_rank (handle, m, n, A, lda, myInfo) |
| integer(kind(rocblas_status_success)) function | rocsolver_sgetrf_npvt_rank_0 (handle, m, n, A, lda, myInfo) |
| integer(kind(rocblas_status_success)) function | rocsolver_sgetrf_npvt_rank_1 (handle, m, n, A, lda, myInfo) |
Detailed Description
GETRF_NPVT computes the LU factorization of a general m-by-n matrix A without partial pivoting.
(This is the blocked Level-3-BLAS version of the algorithm. An optimized internal implementation without rocBLAS calls could be executed with mid-size matrices if optimizations are enabled (default option). For more details, see the "Tuning rocSOLVER performance" section of the Library Design Guide).
The factorization has the form
\[ A = LU \]
where L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).
Note: Although this routine can offer better performance, Gaussian elimination without pivoting is not backward stable. If numerical accuracy is compromised, use the legacy-LAPACK-like API GETRF routines instead.
- Parameters
-
[in] handle rocblas_handle. [in] m rocblas_int. m >= 0.
The number of rows of the matrix A.[in] n rocblas_int. n >= 0.
The number of columns of the matrix A.[in,out] A pointer to type. Array on the GPU of dimension lda*n.
On entry, the m-by-n matrix A to be factored. On exit, the factors L and U from the factorization. The unit diagonal elements of L are not stored.[in] lda rocblas_int. lda >= m.
Specifies the leading dimension of A.[out] info pointer to a rocblas_int on the GPU.
If info = 0, successful exit. If info = j > 0, U is singular. U[j,j] is the first zero element in the diagonal. The factorization from this point might be incomplete.
Member Function/Subroutine Documentation
◆ rocsolver_sgetrf_npvt_()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgetrf_npvt::rocsolver_sgetrf_npvt_ | ( | type(c_ptr), value | handle, |
| integer(c_int), value | m, | ||
| integer(c_int), value | n, | ||
| type(c_ptr), value | A, | ||
| integer(c_int), value | lda, | ||
| integer(c_int) | myInfo | ||
| ) |
◆ rocsolver_sgetrf_npvt_full_rank()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgetrf_npvt::rocsolver_sgetrf_npvt_full_rank | ( | type(c_ptr) | handle, |
| integer(c_int) | m, | ||
| integer(c_int) | n, | ||
| real(c_float), dimension(:,:), target | A, | ||
| integer(c_int) | lda, | ||
| integer(c_int) | myInfo | ||
| ) |
◆ rocsolver_sgetrf_npvt_rank_0()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgetrf_npvt::rocsolver_sgetrf_npvt_rank_0 | ( | type(c_ptr) | handle, |
| integer(c_int) | m, | ||
| integer(c_int) | n, | ||
| real(c_float), target | A, | ||
| integer(c_int) | lda, | ||
| integer(c_int) | myInfo | ||
| ) |
◆ rocsolver_sgetrf_npvt_rank_1()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgetrf_npvt::rocsolver_sgetrf_npvt_rank_1 | ( | type(c_ptr) | handle, |
| integer(c_int) | m, | ||
| integer(c_int) | n, | ||
| real(c_float), dimension(:), target | A, | ||
| integer(c_int) | lda, | ||
| integer(c_int) | myInfo | ||
| ) |
The documentation for this interface was generated from the following file: