hipblassgbmvbatched Interface Reference#
hipfort_hipblas::hipblassgbmvbatched Interface Reference
BLAS Level 2 API. More...
Public Member Functions | |
| integer(kind(hipblas_status_success)) function | hipblassgbmvbatched_ (handle, trans, m, n, kl, ku, alpha, ap, lda, x, incx, beta, y, incy, batchcount) |
Detailed Description
BLAS Level 2 API.
The gbmvBatched functions perform 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, ..., batchCount.
- Supported precisions in rocBLAS :
s,d,c, andz. - Supported precisions in cuBLAS : No support.
- Parameters
-
[in] handle - [hipblasHandle_t] handle to the hipBLAS library context queue. [in] trans - [hipblasOperation_t] indicates whether matrix A is tranposed (conjugated) or not. [in] m - [int] number of rows of each matrix A_i. [in] n - [int] number of columns of each matrix A_i. [in] kl - [int] number of sub-diagonals of each A_i. [in] ku - [int] number of super-diagonals of each A_i. [in] alpha - device pointer or host pointer to scalar alpha. [in] AP - device array of device pointers storing each banded matrix A_i. The 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 propagates 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 empty elements that don't correspond to data will not be referenced. [in] lda - [int] specifies the leading dimension of each A_i. Must be >= (kl + ku + 1). [in] x - device array of device pointers storing each vector x_i. [in] incx - [int] specifies the increment for the elements of each x_i. [in] beta - device pointer or host pointer to scalar beta. [in,out] y - device array of device pointers storing each vector y_i. [in] incy - [int] specifies the increment for the elements of each y_i. [in] batchCount - [int] specifies the number of instances in the batch.
Member Function/Subroutine Documentation
◆ hipblassgbmvbatched_()
| integer(kind(hipblas_status_success)) function hipfort_hipblas::hipblassgbmvbatched::hipblassgbmvbatched_ | ( | type(c_ptr), value | handle, |
| integer(kind(hipblas_op_n)), value | trans, | ||
| integer(c_int), value | m, | ||
| integer(c_int), value | n, | ||
| integer(c_int), value | kl, | ||
| integer(c_int), value | ku, | ||
| real(c_float) | alpha, | ||
| type(c_ptr), value | ap, | ||
| integer(c_int), value | lda, | ||
| type(c_ptr), value | x, | ||
| integer(c_int), value | incx, | ||
| real(c_float) | beta, | ||
| type(c_ptr), value | y, | ||
| integer(c_int), value | incy, | ||
| integer(c_int), value | batchcount | ||
| ) |
The documentation for this interface was generated from the following file: