tridiagonalization_v_step_1()

__kernel void stan::math::opencl_kernels::tridiagonalization_v_step_1	(	const __global double *	P,
		const __global double *	V,
		__global double *	Uu,
		__global double *	Vu,
		const int	P_rows,
		const int	V_rows,
		const int	k
	)

Calculates first part of constructing the vector v: Uu = Pb * u and Vu = Vl * u.

Pb is a block of packed matrix, Vl is left part of matrix V and u is householder vector. Must be run with number of work groups equal to size of resulting vectors and 64 threads per work group.

Parameters

	P	Packed matrix being constructed.
	V	Matrix V.
[out]	Uu	First resulting vector.
[out]	Vu	Second resulting vector.
	P_rows	Number of rows of the packed matrix
	V_rows	Number of rows of the matrix V
	k	Index of the householder vector in the block we use as input

Definition at line 119 of file tridiagonalization.hpp.