elpa_generalized_eigenvalues_ELPA_IMPL_SUFFIX_i Interface Reference

abstract definition of interface to solve a generalized eigenvalue problem More...

Public Member Functions
subroutine	elpa_generalized_eigenvalues_ELPA_IMPL_SUFFIX_i (self, a, b, ev, is_already_decomposed, error)

Detailed Description

abstract definition of interface to solve a generalized eigenvalue problem

The dimensions of the matrix a and b (locally ditributed and global), the block-cyclic distribution blocksize, the number of eigenvectors to be computed and the MPI communicators are already known to the object and MUST be set BEFORE with the class method "setup"

It is possible to change the behaviour of the method by setting tunable parameters with the class method "set" Parameters

Parameters

self	class(elpa_t), the ELPA object
a	double real matrix a: defines the problem to solve
b	double real matrix b: defines the problem to solve
ev	double real: on output stores the eigenvalues
a	single real matrix a: defines the problem to solve
b	single real matrix b: defines the problem to solve
ev	single real: on output stores the eigenvalues
a	double complex matrix a: defines the problem to solve
b	double complex matrix b: defines the problem to solve
ev	double real: on output stores the eigenvalues
a	single complex matrix a: defines the problem to solve
b	single complex matrix b: defines the problem to solve
ev	single real: on output stores the eigenvalues
is_already_decomposed	logical, input: is it repeated call with the same b (decomposed in the fist call)?

Returns

error integer, optional : error code, which can be queried with elpa_strerr

Constructor & Destructor Documentation

elpa_generalized_eigenvalues_ELPA_IMPL_SUFFIX_i()

subroutine elpa_generalized_eigenvalues_ELPA_IMPL_SUFFIX_i::elpa_generalized_eigenvalues_ELPA_IMPL_SUFFIX_i	(	class(elpa_t)	self,
			a,
			b,
		real(kind=c_real_datatype), dimension(self%na)	ev,
		logical	is_already_decomposed,
		integer, optional	error
	)

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

• /backup/work/git2/elpa/elpa/elpa_lib/src/elpa_api_math_template.F90