Function magma_getrs_gpu

src/backend/opencl/magma/getrs.cpp:67–252

template<typename Ty>
magma_int_t magma_getrs_gpu(magma_trans_t trans, magma_int_t n,
                            magma_int_t nrhs, cl_mem dA, size_t dA_offset,
                            magma_int_t ldda, magma_int_t *ipiv, cl_mem dB,
                            size_t dB_offset, magma_int_t lddb,
                            magma_queue_t queue, magma_int_t *info) {
    /*  -- clMagma (version 0.1) --
           Univ. of Tennessee, Knoxville
           Univ. of California, Berkeley
           Univ. of Colorado, Denver
           @date

        Purpose
        =======
        Solves a system of linear equations
          A * X = B  or  A' * X = B
        with a general N-by-N matrix A using the LU factorization computed by
       ZGETRF_GPU.

        Arguments
        =========
        TRANS   (input) CHARACTER*1
                Specifies the form of the system of equations:
                = 'N':  A * X = B  (No transpose)
                = 'T':  A'* X = B  (Transpose)
                = 'C':  A'* X = B  (Conjugate transpose = Transpose)

        N       (input) INTEGER
                The order of the matrix A.  N >= 0.

        NRHS    (input) INTEGER
                The number of right hand sides, i.e., the number of columns
                of the matrix B.  NRHS >= 0.

        A       (input) COMPLEX_16 array on the GPU, dimension (LDA,N)
                The factors L and U from the factorization A = P*L*U as computed
                by ZGETRF_GPU.

        LDA     (input) INTEGER
                The leading dimension of the array A.  LDA >= max(1,N).

        IPIV    (input) INTEGER array, dimension (N)
                The pivot indices from ZGETRF; for 1<=i<=N, row i of the
                matrix was interchanged with row IPIV(i).

        B       (input/output) COMPLEX_16 array on the GPU, dimension (LDB,NRHS)
                On entry, the right hand side matrix B.
                On exit, the solution matrix X.

        LDB     (input) INTEGER
                The leading dimension of the array B.  LDB >= max(1,N).

        INFO    (output) INTEGER
                = 0:  successful exit
                < 0:  if INFO = -i, the i-th argument had an illegal value

        HWORK   (workspace) COMPLEX_16 array, dimension N*NRHS
        ===================================================================== */