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MAGMA
1.6.3
Matrix Algebra for GPU and Multicore Architectures
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Functions | |
magma_int_t | magma_dgetf2_nopiv (magma_int_t m, magma_int_t n, double *A, magma_int_t lda, magma_int_t *info) |
DGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting. More... | |
magma_int_t | magma_dgetf2_gpu (magma_int_t m, magma_int_t n, magmaDouble_ptr dA, magma_int_t ldda, magma_int_t *ipiv, magma_int_t *info) |
DGETF2 computes an LU factorization of a general m-by-n matrix A using partial pivoting with row interchanges. More... | |
magma_int_t magma_dgetf2_gpu | ( | magma_int_t | m, |
magma_int_t | n, | ||
magmaDouble_ptr | dA, | ||
magma_int_t | ldda, | ||
magma_int_t * | ipiv, | ||
magma_int_t * | info | ||
) |
DGETF2 computes an LU factorization of a general m-by-n matrix A using partial pivoting with row interchanges.
The factorization has the form A = P * L * U where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).
This is the right-looking Level 2 BLAS version of the algorithm.
[in] | m | INTEGER The number of rows of the matrix A. M >= 0. |
[in] | n | INTEGER The number of columns of the matrix A. N >= 0 and N <= 1024. On CUDA architecture 1.x cards, N <= 512. |
[in,out] | dA | DOUBLE_PRECISION array, dimension (LDDA,N) On entry, the m by n matrix to be factored. On exit, the factors L and U from the factorization A = P*L*U; the unit diagonal elements of L are not stored. |
[in] | ldda | INTEGER The leading dimension of the array A. LDDA >= max(1,M). |
[out] | ipiv | INTEGER array, dimension (min(M,N)) The pivot indices; for 1 <= i <= min(M,N), row i of the matrix was interchanged with row IPIV(i). |
[out] | info | INTEGER
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magma_int_t magma_dgetf2_nopiv | ( | magma_int_t | m, |
magma_int_t | n, | ||
double * | A, | ||
magma_int_t | lda, | ||
magma_int_t * | info | ||
) |
DGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting.
The factorization has the form A = L * U where L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).
This is the right-looking Level 2 BLAS version of the algorithm.
[in] | m | INTEGER The number of rows of the matrix A. M >= 0. |
[in] | n | INTEGER The number of columns of the matrix A. N >= 0. |
[in,out] | A | DOUBLE_PRECISION array, dimension (LDA,N) On entry, the m by n matrix to be factored. On exit, the factors L and U from the factorization A = P*L*U; the unit diagonal elements of L are not stored. |
[in] | lda | INTEGER The leading dimension of the array A. LDA >= max(1,M). |
[out] | info | INTEGER
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