PLASMA
2.8.0
PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures
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int CORE_dtsmqr_sytra1 | ( | PLASMA_enum | side, |
PLASMA_enum | trans, | ||
int | m1, | ||
int | n1, | ||
int | m2, | ||
int | n2, | ||
int | k, | ||
int | ib, | ||
double * | A1, | ||
int | lda1, | ||
double * | A2, | ||
int | lda2, | ||
const double * | V, | ||
int | ldv, | ||
const double * | T, | ||
int | ldt, | ||
double * | WORK, | ||
int | ldwork | ||
) |
CORE_dtsmqr_sytra1: see CORE_dtsmqr
This kernel applies a left transformation on | A1'| | A2 |
Needs therefore to make the explicit transpose of A1 before and after the application of the block of reflectors Can be further optimized by changing accordingly the underneath kernel ztsrfb!
[in] | side |
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[in] | trans |
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[in] | m1 | The number of rows of the tile A1. M1 >= 0. |
[in] | n1 | The number of columns of the tile A1. N1 >= 0. |
[in] | m2 | The number of rows of the tile A2. M2 >= 0. M2 = M1 if side == PlasmaRight. |
[in] | n2 | The number of columns of the tile A2. N2 >= 0. N2 = N1 if side == PlasmaLeft. |
[in] | k | The number of elementary reflectors whose product defines the matrix Q. |
[in] | ib | The inner-blocking size. IB >= 0. |
[in,out] | A1 | On entry, the M1-by-N1 tile A1. On exit, A1 is overwritten by the application of Q. |
[in] | lda1 | The leading dimension of the array A1. LDA1 >= max(1,M1). |
[in,out] | A2 | On entry, the M2-by-N2 tile A2. On exit, A2 is overwritten by the application of Q. |
[in] | lda2 | The leading dimension of the tile A2. LDA2 >= max(1,M2). |
[in] | V | The i-th row must contain the vector which defines the elementary reflector H(i), for i = 1,2,...,k, as returned by CORE_DTSQRT in the first k columns of its array argument V. |
[in] | ldv | The leading dimension of the array V. LDV >= max(1,K). |
[in] | T | The IB-by-N1 triangular factor T of the block reflector. T is upper triangular by block (economic storage); The rest of the array is not referenced. |
[in] | ldt | The leading dimension of the array T. LDT >= IB. |
[out] | WORK | Workspace array of size LDWORK-by-N1 if side == PlasmaLeft LDWORK-by-IB if side == PlasmaRight |
[in] | ldwork | The leading dimension of the array WORK. LDWORK >= max(1,IB) if side == PlasmaLeft LDWORK >= max(1,M1) if side == PlasmaRight |
PLASMA_SUCCESS | successful exit |
<0 | if -i, the i-th argument had an illegal value |