PLASMA  2.8.0
PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures
void CORE_dgbtype2cb ( PLASMA_enum  uplo,
int  N,
int  NB,
double *  A,
int  LDA,
double *  VQ,
double *  TAUQ,
double *  VP,
double *  TAUP,
int  st,
int  ed,
int  sweep,
int  Vblksiz,
int  WANTZ,
double *  WORK 
)

CORE_dgbtype2cb is a kernel that will operate on a region (triangle) of data bounded by st and ed. This kernel apply the right update remaining from the type1 and this later will create a bulge so it eliminate the first column of the created bulge and do the corresponding Left update.

All detail are available on technical report or SC11 paper. Azzam Haidar, Hatem Ltaief, and Jack Dongarra. 2011. Parallel reduction to condensed forms for symmetric eigenvalue problems using aggregated fine-grained and memory-aware kernels. In Proceedings of 2011 International Conference for High Performance Computing, Networking, Storage and Analysis (SC '11). ACM, New York, NY, USA, , Article 8 , 11 pages. http://doi.acm.org/10.1145/2063384.2063394

Parameters
[in]uplo= PlasmaUpper: Upper triangle of A is stored; = PlasmaLower: Lower triangle of A is stored.
[in]NThe order of the matrix A.
[in]NBThe size of the band.
[in,out]AA pointer to the matrix A of size (3*NB+1)-by-N.
[in]LDAThe leading dimension of the matrix A. LDA >= max(1,3*NB+1)
[in,out]VPTODO: Check and fix doc double array, dimension N if eigenvalue only requested or (LDV*blkcnt*Vblksiz) if Eigenvectors requested The Householder reflectors of the previous type 1 are used here to continue update then new one are generated to eliminate the bulge and stored in this array.
[in,out]TAUPTODO: Check and fix doc double array, dimension (N). The scalar factors of the Householder reflectors of the previous type 1 are used here to continue update then new one are generated to eliminate the bulge and stored in this array.
[in,out]VQTODO: Check and fix doc double array, dimension N if eigenvalue only requested or (LDV*blkcnt*Vblksiz) if Eigenvectors requested The Householder reflectors of the previous type 1 are used here to continue update then new one are generated to eliminate the bulge and stored in this array.
[in,out]TAUQTODO: Check and fix doc double array, dimension (N). The scalar factors of the Householder reflectors of the previous type 1 are used here to continue update then new one are generated to eliminate the bulge and stored in this array.
[in]stA pointer to the start index where this kernel will operate.
[in]edA pointer to the end index where this kernel will operate.
[in]sweepThe sweep number that is eliminated. it serve to calculate the pointer to the position where to store the Vs and Ts.
[in]Vblksizconstant which correspond to the blocking used when applying the Vs. it serve to calculate the pointer to the position where to store the Vs and Ts.
[in]WANTZconstant which indicate if Eigenvalue are requested or both Eigenvalue/Eigenvectors.
[in]WORKWorkspace of size nb.
Returns
Return values
PLASMA_SUCCESSsuccessful exit
<0if -i, the i-th argument had an illegal value