rocblas_zhpmv_strided_batched Interface Reference

rocblas_zhpmv_strided_batched Interface Reference#

HIPFORT API Reference: hipfort_rocblas::rocblas_zhpmv_strided_batched Interface Reference
hipfort_rocblas::rocblas_zhpmv_strided_batched Interface Reference

BLAS Level 2 API. More...

Public Member Functions

integer(kind(rocblas_status_success)) function rocblas_zhpmv_strided_batched_ (handle, uplo, n, alpha, AP, stride_A, x, incx, stride_x, beta, y, incy, stride_y, batch_count)
 
integer(kind(rocblas_status_success)) function rocblas_zhpmv_strided_batched_rank_0 (handle, uplo, n, alpha, AP, stride_A, x, incx, stride_x, beta, y, incy, stride_y, batch_count)
 
integer(kind(rocblas_status_success)) function rocblas_zhpmv_strided_batched_rank_1 (handle, uplo, n, alpha, AP, stride_A, x, incx, stride_x, beta, y, incy, stride_y, batch_count)
 

Detailed Description

BLAS Level 2 API.

hpmv_strided_batched performs the matrix-vector operation

y_i := alpha*A_i*x_i + beta*y_i

where alpha and beta are scalars, x_i and y_i are n element vectors and A_i is an n by n Hermitian matrix, supplied in packed form (see description below), for each batch in i = [1, batch_count].

Parameters
[in]handle[rocblas_handle] handle to the rocblas library context queue.
[in]uplo[rocblas_fill] rocblas_fill_upper: the upper triangular part of each Hermitian matrix A_i is supplied in AP. rocblas_fill_lower: the lower triangular part of each Hermitian matrix A_i is supplied in AP.
[in]n[rocblas_int] the order of each matrix A_i.
[in]alphadevice pointer or host pointer to scalar alpha.
[in]APdevice pointer pointing to the beginning of the first matrix (AP_1). Stores the packed version of the specified triangular portion of each Hermitian matrix AP_i of size ((n * (n + 1)) 2). if uplo == rocblas_fill_upper: The upper triangular portion of each Hermitian matrix A_i is supplied. The matrix is compacted so that each AP_i contains the triangular portion column-by-column so that: AP(0) = A(0,0) AP(1) = A(0,1) AP(2) = A(1,1), etc. Ex: (rocblas_fill_upper; n = 3) (1, 0) (2, 1) (3, 2) (2,-1) (4, 0) (5,-1) --—> [(1,0), (2,1), (4,0), (3,2), (5,-1), (6,0)] (3,-2) (5, 1) (6, 0) if uplo == rocblas_fill_lower: The lower triangular portion of each Hermitian matrix A_i is supplied. The matrix is compacted so that each AP_i contains the triangular portion column-by-column so that: AP(0) = A(0,0) AP(1) = A(1,0) AP(2) = A(2,1), etc. Ex: (rocblas_fill_lower; n = 3) (1, 0) (2, 1) (3, 2) (2,-1) (4, 0) (5,-1) --—> [(1,0), (2,-1), (3,-2), (4,0), (5,1), (6,0)] (3,-2) (5, 1) (6, 0) Note that the imaginary part of the diagonal elements are not accessed and are assumed to be 0.
[in]stride_A[rocblas_stride] stride from the start of one matrix (AP_i) and the next one (AP_i+1).
[in]xdevice array pointing to the beginning of the first vector (x_1).
[in]incx[rocblas_int] specifies the increment for the elements of each x_i.
[in]stride_x[rocblas_stride] stride from the start of one vector (x_i) and the next one (x_i+1).
[in]betadevice pointer or host pointer to scalar beta.
[in,out]ydevice array pointing to the beginning of the first vector (y_1).
[in]incy[rocblas_int] specifies the increment for the elements of y.
[in]stride_y[rocblas_stride] stride from the start of one vector (y_i) and the next one (y_i+1).
[in]batch_count[rocblas_int] number of instances in the batch.

Member Function/Subroutine Documentation

◆ rocblas_zhpmv_strided_batched_()

integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zhpmv_strided_batched::rocblas_zhpmv_strided_batched_ ( type(c_ptr), value  handle,
integer(kind(rocblas_fill_upper)), value  uplo,
integer(c_int), value  n,
complex(c_double_complex)  alpha,
type(c_ptr), value  AP,
integer(c_int64_t), value  stride_A,
type(c_ptr), value  x,
integer(c_int), value  incx,
integer(c_int64_t), value  stride_x,
complex(c_double_complex)  beta,
type(c_ptr), value  y,
integer(c_int), value  incy,
integer(c_int64_t), value  stride_y,
integer(c_int), value  batch_count 
)

◆ rocblas_zhpmv_strided_batched_rank_0()

integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zhpmv_strided_batched::rocblas_zhpmv_strided_batched_rank_0 ( type(c_ptr)  handle,
integer(kind(rocblas_fill_upper))  uplo,
integer(c_int)  n,
complex(c_double_complex)  alpha,
type(c_ptr)  AP,
integer(c_int64_t)  stride_A,
complex(c_double_complex), target  x,
integer(c_int)  incx,
integer(c_int64_t)  stride_x,
complex(c_double_complex)  beta,
complex(c_double_complex), target  y,
integer(c_int)  incy,
integer(c_int64_t)  stride_y,
integer(c_int)  batch_count 
)

◆ rocblas_zhpmv_strided_batched_rank_1()

integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zhpmv_strided_batched::rocblas_zhpmv_strided_batched_rank_1 ( type(c_ptr)  handle,
integer(kind(rocblas_fill_upper))  uplo,
integer(c_int)  n,
complex(c_double_complex)  alpha,
type(c_ptr)  AP,
integer(c_int64_t)  stride_A,
complex(c_double_complex), dimension(:), target  x,
integer(c_int)  incx,
integer(c_int64_t)  stride_x,
complex(c_double_complex)  beta,
complex(c_double_complex), dimension(:), target  y,
integer(c_int)  incy,
integer(c_int64_t)  stride_y,
integer(c_int)  batch_count 
)

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