hipblaszgetrfstridedbatched Interface Reference

• hipfort_hipblas
• hipblaszgetrfstridedbatched

Public Member Functions | List of all members

hipfort_hipblas::hipblaszgetrfstridedbatched Interface Reference

SOLVER API. More...

Public Member Functions
integer(kind(hipblas_status_success)) function	hipblaszgetrfstridedbatched_ (handle, n, A, lda, strideA, ipiv, strideP, myInfo, batchCount)
integer(kind(hipblas_status_success)) function	hipblaszgetrfstridedbatched_full_rank (handle, n, A, lda, strideA, ipiv, strideP, myInfo, batchCount)
integer(kind(hipblas_status_success)) function	hipblaszgetrfstridedbatched_rank_0 (handle, n, A, lda, strideA, ipiv, strideP, myInfo, batchCount)
integer(kind(hipblas_status_success)) function	hipblaszgetrfstridedbatched_rank_1 (handle, n, A, lda, strideA, ipiv, strideP, myInfo, batchCount)

Detailed Description

SOLVER API.

getrfStridedBatched computes the LU factorization of a batch of general n-by-n matrices using partial pivoting with row interchanges. The LU factorization can be done without pivoting if ipiv is passed as a nullptr.

In the case that ipiv is not null, the factorization of matrix \(A_i\) in the batch has the form:

\[ A_i = P_iL_iU_i \]

where \(P_i\) is a permutation matrix, \(L_i\) is lower triangular with unit diagonal elements, and \(U_i\) is upper triangular.

In the case that ipiv is null, the factorization is done without pivoting:

\[ A_i = L_iU_i \]

Parameters

[in]	handle	hipblasHandle_t.
[in]	n	int. n >= 0. The number of columns and rows of all matrices A_i in the batch.
[in,out]	A	pointer to type. Array on the GPU (the size depends on the value of strideA). On entry, the n-by-n matrices A_i to be factored. On exit, the factors L_i and U_i from the factorization. The unit diagonal elements of L_i are not stored.
[in]	lda	int. lda >= n. Specifies the leading dimension of matrices A_i.
[in]	strideA	hipblasStride. Stride from the start of one matrix A_i to the next one A_(i+1). There is no restriction for the value of strideA. Normal use case is strideA >= lda*n
[out]	ipiv	pointer to int. Array on the GPU (the size depends on the value of strideP). Contains the vectors of pivots indices ipiv_i (corresponding to A_i). Dimension of ipiv_i is n. Elements of ipiv_i are 1-based indices. For each instance A_i in the batch and for 1 <= j <= n, the row j of the matrix A_i was interchanged with row ipiv_i[j]. Matrix P_i of the factorization can be derived from ipiv_i. The factorization here can be done without pivoting if ipiv is passed in as a nullptr.
[in]	strideP	hipblasStride. Stride from the start of one vector ipiv_i to the next one ipiv_(i+1). There is no restriction for the value of strideP. Normal use case is strideP >= n.
[out]	info	pointer to int. Array of batchCount integers on the GPU. If info[i] = 0, successful exit for factorization of A_i. If info[i] = j > 0, U_i is singular. U_i[j,j] is the first zero pivot.
[in]	batchCount	int. batchCount >= 0. Number of matrices in the batch.

Member Function/Subroutine Documentation

◆ hipblaszgetrfstridedbatched_()

integer(kind(hipblas_status_success)) function hipfort_hipblas::hipblaszgetrfstridedbatched::hipblaszgetrfstridedbatched_	(	type(c_ptr), value	handle,
		integer(c_int), value	n,
		type(c_ptr), value	A,
		integer(c_int), value	lda,
		integer(c_int64_t), value	strideA,
		type(c_ptr), value	ipiv,
		integer(c_int64_t), value	strideP,
		type(c_ptr), value	myInfo,
		integer(c_int), value	batchCount
	)

◆ hipblaszgetrfstridedbatched_full_rank()

integer(kind(hipblas_status_success)) function hipfort_hipblas::hipblaszgetrfstridedbatched::hipblaszgetrfstridedbatched_full_rank	(	type(c_ptr)	handle,
		integer(c_int)	n,
		complex(c_double_complex), dimension(:,:), target	A,
		integer(c_int)	lda,
		integer(c_int64_t)	strideA,
		type(c_ptr)	ipiv,
		integer(c_int64_t)	strideP,
		type(c_ptr)	myInfo,
		integer(c_int)	batchCount
	)

◆ hipblaszgetrfstridedbatched_rank_0()

integer(kind(hipblas_status_success)) function hipfort_hipblas::hipblaszgetrfstridedbatched::hipblaszgetrfstridedbatched_rank_0	(	type(c_ptr)	handle,
		integer(c_int)	n,
		complex(c_double_complex), target	A,
		integer(c_int)	lda,
		integer(c_int64_t)	strideA,
		type(c_ptr)	ipiv,
		integer(c_int64_t)	strideP,
		type(c_ptr)	myInfo,
		integer(c_int)	batchCount
	)

◆ hipblaszgetrfstridedbatched_rank_1()

integer(kind(hipblas_status_success)) function hipfort_hipblas::hipblaszgetrfstridedbatched::hipblaszgetrfstridedbatched_rank_1	(	type(c_ptr)	handle,
		integer(c_int)	n,
		complex(c_double_complex), dimension(:), target	A,
		integer(c_int)	lda,
		integer(c_int64_t)	strideA,
		type(c_ptr)	ipiv,
		integer(c_int64_t)	strideP,
		type(c_ptr)	myInfo,
		integer(c_int)	batchCount
	)

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

• hipfort_hipblas.f