rocsolver_sgetrf Interface Reference#
GETRF computes the LU factorization of a general m-by-n matrix A using partial pivoting with row interchanges. More...
Public Member Functions | |
integer(kind(rocblas_status_success)) function | rocsolver_sgetrf_ (handle, m, n, A, lda, ipiv, myInfo) |
integer(kind(rocblas_status_success)) function | rocsolver_sgetrf_full_rank (handle, m, n, A, lda, ipiv, myInfo) |
integer(kind(rocblas_status_success)) function | rocsolver_sgetrf_rank_0 (handle, m, n, A, lda, ipiv, myInfo) |
integer(kind(rocblas_status_success)) function | rocsolver_sgetrf_rank_1 (handle, m, n, A, lda, ipiv, myInfo) |
Detailed Description
GETRF computes the LU factorization of a general m-by-n matrix A using partial pivoting with row interchanges.
(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
\[ A = PLU \]
where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).
- 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] ipiv pointer to rocblas_int. Array on the GPU of dimension min(m,n).
The vector of pivot indices. Elements of ipiv are 1-based indices. For 1 <= i <= min(m,n), the row i of the matrix was interchanged with row ipiv[i]. Matrix P of the factorization can be derived from ipiv.[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 pivot.
Member Function/Subroutine Documentation
◆ rocsolver_sgetrf_()
integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgetrf::rocsolver_sgetrf_ | ( | 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, | ||
type(c_ptr), value | ipiv, | ||
integer(c_int) | myInfo | ||
) |
◆ rocsolver_sgetrf_full_rank()
integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgetrf::rocsolver_sgetrf_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), dimension(:), target | ipiv, | ||
integer(c_int) | myInfo | ||
) |
◆ rocsolver_sgetrf_rank_0()
integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgetrf::rocsolver_sgetrf_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), target | ipiv, | ||
integer(c_int) | myInfo | ||
) |
◆ rocsolver_sgetrf_rank_1()
integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgetrf::rocsolver_sgetrf_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), dimension(:), target | ipiv, | ||
integer(c_int) | myInfo | ||
) |
The documentation for this interface was generated from the following file: