hsolver::heevx_op< T, Device > Struct Template Reference

#include <hegvd_op.h>

Collaboration diagram for hsolver::heevx_op< T, Device >:

Public Types
using	Real = typename GetTypeReal< T >::type

Public Member Functions
void	operator() (const Device *d, const int ndim, const int lda, const T *A, const int neig, Real *w, T *z)
	heevx computes the first m eigenvalues and their corresponding eigenvectors of a complex generalized Hermitian-definite eigenproblem

Member Typedef Documentation

Real

template<typename T , typename Device >

using hsolver::heevx_op< T, Device >::Real = typename GetTypeReal<T>::type

Member Function Documentation

operator()()

template<typename T , typename Device >

void hsolver::heevx_op< T, Device >::operator()	(	const Device *	d,
		const int	ndim,
		const int	lda,
		const T *	A,
		const int	neig,
		Real *	w,
		T *	z
	)

heevx computes the first m eigenvalues and their corresponding eigenvectors of a complex generalized Hermitian-definite eigenproblem

In this op, the CPU version is implemented through the evx interface, and the CUDA version is implemented through the evd interface and acquires the first m eigenpairs. API doc:

1. zheevx: https://netlib.org/lapack/explore-html/df/d9a/group__complex16_h_eeigen_gaabef68a9c7b10df7aef8f4fec89fddbe.html
2. cusolverDnZheevd: https://docs.nvidia.com/cuda/cusolver/index.html#cusolverdn-t-syevd

Input Parameters

Parameters

d	: the type of device
ndim	: the size of square matrix
lda	: leading dimension of the matrix
A	: the hermitian matrix A in A x=lambda x
neig	: the number of eigenpairs to be calculated Output Parameter
w	calculated eigenvalues
z	calculated eigenvectors

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The documentation for this struct was generated from the following file:

• /home/runner/work/abacus-develop/abacus-develop/source/source_hsolver/kernels/hegvd_op.h