rocsolver_sgetrf_npvt Interface Reference

• hipfort_rocsolver
• rocsolver_sgetrf_npvt

Public Member Functions | List of all members

hipfort_rocsolver::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
	)

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The documentation for this interface was generated from the following file:

• hipfort_rocsolver.f