elpa_generated.h File Reference

#include <complex.h>

Go to the source code of this file.

Functions
int	elpa_get_communicators (int mpi_comm_world, int my_prow, int my_pcol, int *mpi_comm_rows, int *mpi_comm_cols)
	C old, deprecated interface to create the MPI communicators for ELPA. More...
int	get_elpa_communicators (int mpi_comm_world, int my_prow, int my_pcol, int *mpi_comm_rows, int *mpi_comm_cols)
	C interface to create the MPI communicators for ELPA. More...
int	elpa_solve_evp_real_1stage (int na, int nev, double *a, int lda, double *ev, double *q, int ldq, int nblk, int matrixCols, int mpi_comm_rows, int mpi_comm_cols)
	C interface to solve the real eigenvalue problem with 1-stage solver. More...
int	elpa_solve_evp_complex_1stage (int na, int nev, double complex *a, int lda, double *ev, double complex *q, int ldq, int nblk, int matrixCols, int mpi_comm_rows, int mpi_comm_cols)
	C interface to solve the complex eigenvalue problem with 1-stage solver. More...
int	elpa_solve_evp_real_2stage (int na, int nev, double *a, int lda, double *ev, double *q, int ldq, int nblk, int matrixCols, int mpi_comm_rows, int mpi_comm_cols, int mpi_comm_all, int THIS_REAL_ELPA_KERNEL_API, int useQR)
	C interface to solve the real eigenvalue problem with 2-stage solver. More...
int	elpa_solve_evp_complex_2stage (int na, int nev, double complex *a, int lda, double *ev, double complex *q, int ldq, int nblk, int matrixCols, int mpi_comm_rows, int mpi_comm_cols, int mpi_comm_all, int THIS_COMPLEX_ELPA_KERNEL_API)
	C interface to solve the complex eigenvalue problem with 2-stage solver. More...

Function Documentation

int elpa_get_communicators	(	int	mpi_comm_world,
		int	my_prow,
		int	my_pcol,
		int *	mpi_comm_rows,
		int *	mpi_comm_cols
	)

C old, deprecated interface to create the MPI communicators for ELPA.

Parameters

mpi_comm_word	MPI global communicator (in)
my_prow	Row coordinate of the calling process in the process grid (in)
my_pcol	Column coordinate of the calling process in the process grid (in)
mpi_comm_rows	Communicator for communicating within rows of processes (out)

Returns

int integer error value of mpi_comm_split function

int elpa_solve_evp_complex_1stage	(	int	na,
		int	nev,
		double complex *	a,
		int	lda,
		double *	ev,
		double complex *	q,
		int	ldq,
		int	nblk,
		int	matrixCols,
		int	mpi_comm_rows,
		int	mpi_comm_cols
	)

C interface to solve the complex eigenvalue problem with 1-stage solver.

Parameters

na	Order of matrix a
nev	Number of eigenvalues needed. The smallest nev eigenvalues/eigenvectors are calculated.
a	Distributed matrix for which eigenvalues are to be computed. Distribution is like in Scalapack. The full matrix must be set (not only one half like in scalapack).
lda	Leading dimension of a
ev(na)	On output: eigenvalues of a, every processor gets the complete set
q	On output: Eigenvectors of a Distribution is like in Scalapack. Must be always dimensioned to the full size (corresponding to (na,na)) even if only a part of the eigenvalues is needed.
ldq	Leading dimension of q
nblk	blocksize of cyclic distribution, must be the same in both directions!
matrixCols	distributed number of matrix columns
mpi_comm_rows	MPI-Communicator for rows
mpi_comm_cols	MPI-Communicator for columns

Returns

int: 1 if error occured, otherwise 0

int elpa_solve_evp_complex_2stage	(	int	na,
		int	nev,
		double complex *	a,
		int	lda,
		double *	ev,
		double complex *	q,
		int	ldq,
		int	nblk,
		int	matrixCols,
		int	mpi_comm_rows,
		int	mpi_comm_cols,
		int	mpi_comm_all,
		int	THIS_COMPLEX_ELPA_KERNEL_API
	)

C interface to solve the complex eigenvalue problem with 2-stage solver.

Parameters

na	Order of matrix a
nev	Number of eigenvalues needed. The smallest nev eigenvalues/eigenvectors are calculated.
a	Distributed matrix for which eigenvalues are to be computed. Distribution is like in Scalapack. The full matrix must be set (not only one half like in scalapack).
lda	Leading dimension of a
ev(na)	On output: eigenvalues of a, every processor gets the complete set
q	On output: Eigenvectors of a Distribution is like in Scalapack. Must be always dimensioned to the full size (corresponding to (na,na)) even if only a part of the eigenvalues is needed.
ldq	Leading dimension of q
nblk	blocksize of cyclic distribution, must be the same in both directions!
matrixCols	distributed number of matrix columns
mpi_comm_rows	MPI-Communicator for rows
mpi_comm_cols	MPI-Communicator for columns
mpi_coll_all	MPI communicator for the total processor set
THIS_REAL_ELPA_KERNEL_API	specify used ELPA2 kernel via API
use_qr	use QR decomposition 1 = yes, 0 = no

Returns

int: 1 if error occured, otherwise 0

int elpa_solve_evp_real_1stage	(	int	na,
		int	nev,
		double *	a,
		int	lda,
		double *	ev,
		double *	q,
		int	ldq,
		int	nblk,
		int	matrixCols,
		int	mpi_comm_rows,
		int	mpi_comm_cols
	)

C interface to solve the real eigenvalue problem with 1-stage solver.

Parameters

na	Order of matrix a
nev	Number of eigenvalues needed. The smallest nev eigenvalues/eigenvectors are calculated.
a	Distributed matrix for which eigenvalues are to be computed. Distribution is like in Scalapack. The full matrix must be set (not only one half like in scalapack).
lda	Leading dimension of a
ev(na)	On output: eigenvalues of a, every processor gets the complete set
q	On output: Eigenvectors of a Distribution is like in Scalapack. Must be always dimensioned to the full size (corresponding to (na,na)) even if only a part of the eigenvalues is needed.
ldq	Leading dimension of q
nblk	blocksize of cyclic distribution, must be the same in both directions!
matrixCols	distributed number of matrix columns
mpi_comm_rows	MPI-Communicator for rows
mpi_comm_cols	MPI-Communicator for columns

Returns

int: 1 if error occured, otherwise 0

int elpa_solve_evp_real_2stage	(	int	na,
		int	nev,
		double *	a,
		int	lda,
		double *	ev,
		double *	q,
		int	ldq,
		int	nblk,
		int	matrixCols,
		int	mpi_comm_rows,
		int	mpi_comm_cols,
		int	mpi_comm_all,
		int	THIS_REAL_ELPA_KERNEL_API,
		int	useQR
	)

C interface to solve the real eigenvalue problem with 2-stage solver.

Parameters

na	Order of matrix a
nev	Number of eigenvalues needed. The smallest nev eigenvalues/eigenvectors are calculated.
a	Distributed matrix for which eigenvalues are to be computed. Distribution is like in Scalapack. The full matrix must be set (not only one half like in scalapack).
lda	Leading dimension of a
ev(na)	On output: eigenvalues of a, every processor gets the complete set
q	On output: Eigenvectors of a Distribution is like in Scalapack. Must be always dimensioned to the full size (corresponding to (na,na)) even if only a part of the eigenvalues is needed.
ldq	Leading dimension of q
nblk	blocksize of cyclic distribution, must be the same in both directions!
matrixCols	distributed number of matrix columns
mpi_comm_rows	MPI-Communicator for rows
mpi_comm_cols	MPI-Communicator for columns
mpi_coll_all	MPI communicator for the total processor set
THIS_REAL_ELPA_KERNEL_API	specify used ELPA2 kernel via API
use_qr	use QR decomposition 1 = yes, 0 = no

Returns

int: 1 if error occured, otherwise 0

int get_elpa_communicators	(	int	mpi_comm_world,
		int	my_prow,
		int	my_pcol,
		int *	mpi_comm_rows,
		int *	mpi_comm_cols
	)

C interface to create the MPI communicators for ELPA.

Parameters

mpi_comm_word	MPI global communicator (in)
my_prow	Row coordinate of the calling process in the process grid (in)
my_pcol	Column coordinate of the calling process in the process grid (in)
mpi_comm_rows	Communicator for communicating within rows of processes (out)

Returns

int integer error value of mpi_comm_split function