rocsolver_sgetrf_npvt Interface Reference

rocsolver_sgetrf_npvt Interface Reference#

HIPFORT API Reference: hipfort_rocsolver::rocsolver_sgetrf_npvt Interface Reference
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]handlerocblas_handle.
[in]mrocblas_int. m >= 0.
The number of rows of the matrix A.
[in]nrocblas_int. n >= 0.
The number of columns of the matrix A.
[in,out]Apointer 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]ldarocblas_int. lda >= m.
Specifies the leading dimension of A.
[out]infopointer 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 
)

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