rocblas_zgbmv_batched Interface Reference

rocblas_zgbmv_batched Interface Reference#

HIPFORT API Reference: hipfort_rocblas::rocblas_zgbmv_batched Interface Reference
hipfort_rocblas::rocblas_zgbmv_batched Interface Reference

BLAS Level 2 API. More...

Public Member Functions

integer(kind(rocblas_status_success)) function rocblas_zgbmv_batched_ (handle, trans, m, n, kl, ku, alpha, A, lda, x, incx, beta, y, incy, batch_count)
 
integer(kind(rocblas_status_success)) function rocblas_zgbmv_batched_full_rank (handle, trans, m, n, kl, ku, alpha, A, lda, x, incx, beta, y, incy, batch_count)
 
integer(kind(rocblas_status_success)) function rocblas_zgbmv_batched_rank_0 (handle, trans, m, n, kl, ku, alpha, A, lda, x, incx, beta, y, incy, batch_count)
 
integer(kind(rocblas_status_success)) function rocblas_zgbmv_batched_rank_1 (handle, trans, m, n, kl, ku, alpha, A, lda, x, incx, beta, y, incy, batch_count)
 

Detailed Description

BLAS Level 2 API.

gbmv_batched performs one of the matrix-vector operations

y_i := alpha*A_i*x_i    + beta*y_i,   or
y_i := alpha*A_i**T*x_i + beta*y_i,   or
y_i := alpha*A_i**H*x_i + beta*y_i,

where (A_i, x_i, y_i) is the i-th instance of the batch. alpha and beta are scalars, x_i and y_i are vectors and A_i is an m by n banded matrix with kl sub-diagonals and ku super-diagonals, for i = 1, ..., batch_count.

Parameters
[in]handle[rocblas_handle] handle to the rocblas library context queue.
[in]trans[rocblas_operation] indicates whether matrix A is tranposed (conjugated) or not
[in]m[rocblas_int] number of rows of each matrix A_i
[in]n[rocblas_int] number of columns of each matrix A_i
[in]kl[rocblas_int] number of sub-diagonals of each A_i
[in]ku[rocblas_int] number of super-diagonals of each A_i
[in]alphadevice pointer or host pointer to scalar alpha.
[in]Adevice array of device pointers storing each banded matrix A_i. Leading (kl + ku + 1) by n part of the matrix contains the coefficients of the banded matrix. The leading diagonal resides in row (ku + 1) with the first super-diagonal above on the RHS of row ku. The first sub-diagonal resides below on the LHS of row ku + 2. This propogates up and down across sub/super-diagonals. Ex: (m = n = 7; ku = 2, kl = 2) 1 2 3 0 0 0 0 0 0 3 3 3 3 3 4 1 2 3 0 0 0 0 2 2 2 2 2 2 5 4 1 2 3 0 0 -—> 1 1 1 1 1 1 1 0 5 4 1 2 3 0 4 4 4 4 4 4 0 0 0 5 4 1 2 0 5 5 5 5 5 0 0 0 0 0 5 4 1 2 0 0 0 0 0 0 0 0 0 0 0 5 4 1 0 0 0 0 0 0 0 Note that the empty elements which don't correspond to data will not be referenced.
[in]lda[rocblas_int] specifies the leading dimension of each A_i. Must be >= (kl + ku + 1)
[in]xdevice array of device pointers storing each vector x_i.
[in]incx[rocblas_int] specifies the increment for the elements of each x_i.
[in]betadevice pointer or host pointer to scalar beta.
[in,out]ydevice array of device pointers storing each vector y_i.
[in]incy[rocblas_int] specifies the increment for the elements of each y_i.
[in]batch_count[rocblas_int] specifies the number of instances in the batch.

Member Function/Subroutine Documentation

◆ rocblas_zgbmv_batched_()

integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zgbmv_batched::rocblas_zgbmv_batched_ ( type(c_ptr), value  handle,
integer(kind(rocblas_operation_none)), value  trans,
integer(c_int), value  m,
integer(c_int), value  n,
integer(c_int), value  kl,
integer(c_int), value  ku,
complex(c_double_complex)  alpha,
type(c_ptr)  A,
integer(c_int), value  lda,
type(c_ptr)  x,
integer(c_int), value  incx,
complex(c_double_complex)  beta,
type(c_ptr)  y,
integer(c_int), value  incy,
integer(c_int), value  batch_count 
)

◆ rocblas_zgbmv_batched_full_rank()

integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zgbmv_batched::rocblas_zgbmv_batched_full_rank ( type(c_ptr)  handle,
integer(kind(rocblas_operation_none))  trans,
integer(c_int)  m,
integer(c_int)  n,
integer(c_int)  kl,
integer(c_int)  ku,
complex(c_double_complex)  alpha,
complex(c_double_complex), dimension(:,:,:), target  A,
integer(c_int)  lda,
complex(c_double_complex), dimension(:,:), target  x,
integer(c_int)  incx,
complex(c_double_complex)  beta,
complex(c_double_complex), dimension(:,:), target  y,
integer(c_int)  incy,
integer(c_int)  batch_count 
)

◆ rocblas_zgbmv_batched_rank_0()

integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zgbmv_batched::rocblas_zgbmv_batched_rank_0 ( type(c_ptr)  handle,
integer(kind(rocblas_operation_none))  trans,
integer(c_int)  m,
integer(c_int)  n,
integer(c_int)  kl,
integer(c_int)  ku,
complex(c_double_complex)  alpha,
complex(c_double_complex), target  A,
integer(c_int)  lda,
complex(c_double_complex), target  x,
integer(c_int)  incx,
complex(c_double_complex)  beta,
complex(c_double_complex), target  y,
integer(c_int)  incy,
integer(c_int)  batch_count 
)

◆ rocblas_zgbmv_batched_rank_1()

integer(kind(rocblas_status_success)) function hipfort_rocblas::rocblas_zgbmv_batched::rocblas_zgbmv_batched_rank_1 ( type(c_ptr)  handle,
integer(kind(rocblas_operation_none))  trans,
integer(c_int)  m,
integer(c_int)  n,
integer(c_int)  kl,
integer(c_int)  ku,
complex(c_double_complex)  alpha,
complex(c_double_complex), dimension(:), target  A,
integer(c_int)  lda,
complex(c_double_complex), dimension(:), target  x,
integer(c_int)  incx,
complex(c_double_complex)  beta,
complex(c_double_complex), dimension(:), target  y,
integer(c_int)  incy,
integer(c_int)  batch_count 
)

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