rocsolver_sgesv_batched Interface Reference#
hipfort_rocsolver::rocsolver_sgesv_batched Interface Reference
The GESV_BATCHED functions solve a batch of general systems of n linear equations on n variables.
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Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocsolver_sgesv_batched_ (handle, n, nrhs, a, lda, ipiv, stridep, b, ldb, myinfo, batch_count) |
| integer(kind(rocblas_status_success)) function | rocsolver_sgesv_batched_rank_0 (handle, n, nrhs, a, lda, ipiv, stridep, b, ldb, myinfo, batch_count) |
| integer(kind(rocblas_status_success)) function | rocsolver_sgesv_batched_rank_1 (handle, n, nrhs, a, lda, ipiv, stridep, b, ldb, myinfo, batch_count) |
Detailed Description
The GESV_BATCHED functions solve a batch of general systems of n linear equations on n variables.
The linear systems are of the form
\[ A_l X_l = B_l \]
where \(A_l\) is a general n -by-n matrix. Matrix \(A_l\) is first factorized in triangular factors \(L_l\) and \(U_l\) using GETRF_BATCHED, then the solutions are computed with GETRS_BATCHED.
- Parameters
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[in] handle - rocblas_handle. [in] n - rocblas_int. n >= 0. The order of the system, that is, the number of columns and rows of all A_l matrices. [in] nrhs - rocblas_int. nrhs >= 0. The number of right hand sides, that is, the number of columns of all the matrices B_l. [in,out] A - Array of pointers to type. Each pointer points to an array on the GPU of dimension lda*n. On entry, the matrices A_l. On exit, if info[l] = 0, the factors L_l and U_l of the LU decomposition of A_l returned by GETRF_BATCHED. [in] lda - rocblas_int. lda >= n. The leading dimension of matrices A_l. [out] ipiv - pointer to rocblas_int. Array on the GPU (the size depends on the value of strideP). The vectors ipiv_l of pivot indices returned by GETRF_BATCHED. [in] strideP - rocblas_stride. Stride from the start of one vector ipiv_l to the next one ipiv_(l+1). There is no restriction for the value of strideP. The normal use case is strideP >= n. [in,out] B - Array of pointers to type. Each pointer points to an array on the GPU of dimension ldb*nrhs. On entry, the right hand side matrices B_l. On exit, the solution matrix X_l of each system in the batch. [in] ldb - rocblas_int. ldb >= n. The leading dimension of matrices B_l. [out] myInfo - pointer to rocblas_int. Array of batch_count integers on the GPU. If info[l] = 0, successful exit for A_l. If info[l] = i > 0, U_l is singular, and the solution could not be computed. U_l[i,i] is the first zero element in the diagonal. [in] batch_count - rocblas_int. batch_count >= 0. Number of instances (systems) in the batch.
Member Function/Subroutine Documentation
◆ rocsolver_sgesv_batched_()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgesv_batched::rocsolver_sgesv_batched_ | ( | type(c_ptr), value | handle, |
| integer(c_int), value | n, | ||
| integer(c_int), value | nrhs, | ||
| type(c_ptr), value | a, | ||
| integer(c_int), value | lda, | ||
| type(c_ptr), value | ipiv, | ||
| integer(c_int64_t), value | stridep, | ||
| type(c_ptr), value | b, | ||
| integer(c_int), value | ldb, | ||
| type(c_ptr), value | myinfo, | ||
| integer(c_int), value | batch_count | ||
| ) |
◆ rocsolver_sgesv_batched_rank_0()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgesv_batched::rocsolver_sgesv_batched_rank_0 | ( | type(c_ptr) | handle, |
| integer(c_int) | n, | ||
| integer(c_int) | nrhs, | ||
| type(c_ptr) | a, | ||
| integer(c_int) | lda, | ||
| integer(c_int), target | ipiv, | ||
| integer(c_int64_t) | stridep, | ||
| type(c_ptr) | b, | ||
| integer(c_int) | ldb, | ||
| type(c_ptr) | myinfo, | ||
| integer(c_int) | batch_count | ||
| ) |
◆ rocsolver_sgesv_batched_rank_1()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_sgesv_batched::rocsolver_sgesv_batched_rank_1 | ( | type(c_ptr) | handle, |
| integer(c_int) | n, | ||
| integer(c_int) | nrhs, | ||
| type(c_ptr) | a, | ||
| integer(c_int) | lda, | ||
| integer(c_int), dimension(:), target | ipiv, | ||
| integer(c_int64_t) | stridep, | ||
| type(c_ptr) | b, | ||
| integer(c_int) | ldb, | ||
| type(c_ptr) | myinfo, | ||
| integer(c_int) | batch_count | ||
| ) |
The documentation for this interface was generated from the following file: