OpenCL linear algebra class. More...

#include <csol_la.h>

Public Member Functions
	LinearAlgebra (int, cl::Context &, cl::CommandQueue &, std::vector< cl::Device > &, int)
	LinearAlgebra constructor. More...

	LinearAlgebra (const LinearAlgebra &)

	~LinearAlgebra ()

void	copyIntBuffer (const cl::Buffer &, cl::Buffer &, int)
	LinearAlgebra integer buffer copy. More...

void	copyRealBuffer (const cl::Buffer &, cl::Buffer &, int)
	LinearAlgebra floating-point buffer copy. More...

cl::Buffer	createIntBuffer (int)
	LinearAlgebra integer buffer creation. More...

cl::Buffer	createRealBuffer (int)
	LinearAlgebra floating-point buffer creation. More...

REAL	Dot (const Vector &, const Vector &)
	LinearAlgebra vector dot product. More...

int	getWorkGroupSize ()

void	minusEqualsVector (cl::Buffer &, const cl::Buffer &, int, int)
	LinearAlgebra -= operation. More...

LinearAlgebra &	operator= (const LinearAlgebra &)

void	plusEqualsVector (cl::Buffer &, const cl::Buffer &, int, int)
	LinearAlgebra += operation. More...

void	readIntBuffer (int *, const cl::Buffer &, int)
	LinearAlgebra integer read. More...

void	readRealBuffer (REAL *, const cl::Buffer &, int)
	LinearAlgebra floating-point read. More...

void	reserveSparseMatrix (int, int, int, int, cl::Buffer &, cl::Buffer &, cl::Buffer &, cl::Buffer &, cl::Buffer &)
	LinearAlgebra sparse matrix reservation implementation. More...

void	setIntBuffer (cl::Buffer &, int, int)
	LinearAlgebra integer vector set operation. More...

void	setRealBuffer (cl::Buffer &, REAL, int)
	LinearAlgebra floating-point vector set operation. More...

Vector	Solve (const SparseMatrix &, const Vector &, const Vector &)
	LinearAlgebra sparse matrix solve. More...

void	sparseMatrixProduct (const cl::Buffer &, cl::Buffer &, const cl::Buffer &, const cl::Buffer &, const cl::Buffer &, const cl::Buffer &, int, int)
	LinearAlgebra sparse matrix product implementation. More...

void	timesEqualsScalar (cl::Buffer &, REAL, int, int)
	LinearAlgebra *= operation. More...

void	timesEqualsVector (cl::Buffer &, const cl::Buffer &, int, int)
	LinearAlgebra *= operation. More...

void	writeIntBuffer (int *, cl::Buffer &, int)
	LinearAlgebra integer write. More...

void	writeRealBuffer (REAL *, cl::Buffer &, int)
	LinearAlgebra floating-point write. More...

Detailed Description

Base class for OpenCL linear algebra operations, including vector and matrix types. Implements a number of vector operations as well as a preconditioned conjugate gradient solver.

Constructor & Destructor Documentation

LinearAlgebra	(	int	workGroupSize_,
		cl::Context &	context_,
		cl::CommandQueue &	queue_,
		std::vector< cl::Device > &	devices_,
		int	deviceID
	)

Parameters

workGroupSize_	OpenCL work-group size to use.
context_	OpenCL context handle.
queue_	OpenCL queue handle.
devices_	OpenCL device list.
deviceID	OpenCL device ID to use.

~LinearAlgebra ( )

inline

LinearAlgebra ( const LinearAlgebra & )

Member Function Documentation

void copyIntBuffer	(	const cl::Buffer &	source,
		cl::Buffer &	dest,
		int	n
	)

Parameters

source	source buffer.
dest	destination buffer.
n	number of items to copy.

void copyRealBuffer	(	const cl::Buffer &	source,
		cl::Buffer &	dest,
		int	n
	)

Parameters

source	source buffer.
dest	destination buffer.
n	number of items to copy.

cl::Buffer createIntBuffer ( int size )

Parameters

size	size of buffer.

cl::Buffer createRealBuffer ( int size )

Parameters

size	size of buffer.

REAL Dot	(	const Vector &	a,
		const Vector &	b
	)

Parameters

a	first vector.
b	second vector.

Returns: valur of dot product.

int getWorkGroupSize ( )

inline

void minusEqualsVector	(	cl::Buffer &	base,
		const cl::Buffer &	op,
		int	padn,
		int	n
	)

Parameters

base	buffer to set.
op	buffer to subtract.
padn	number of items padded to work-group size.
n	number of items to set.

LinearAlgebra& operator= ( const LinearAlgebra & )

void plusEqualsVector	(	cl::Buffer &	base,
		const cl::Buffer &	op,
		int	padn,
		int	n
	)

Parameters

base	buffer to set.
op	buffer to add.
padn	number of items padded to work-group size.
n	number of items to set.

void readIntBuffer	(	int *	dest,
		const cl::Buffer &	source,
		int	n
	)

Parameters

dest	memory pointer to copy to.
source	source buffer.
n	number of items to copy.

void readRealBuffer	(	REAL *	dest,
		const cl::Buffer &	source,
		int	n
	)

Parameters

dest	memory pointer to copy to.
source	source buffer.
n	number of items to copy.

void reserveSparseMatrix	(	int	i,
		int	j,
		int	index,
		int	nWritten,
		cl::Buffer &	row,
		cl::Buffer &	col,
		cl::Buffer &	idx,
		cl::Buffer &	rowstart,
		cl::Buffer &	rowlength
	)

void setIntBuffer	(	cl::Buffer &	base,
		int	op,
		int	padn
	)

Parameters

base	buffer to set.
op	value to set buffer to.
padn	number of items to set.

void setRealBuffer	(	cl::Buffer &	base,
		REAL	op,
		int	padn
	)

Parameters

base	buffer to set.
op	value to set buffer to.
padn	number of items to set.

Vector Solve	(	const SparseMatrix &	A,
		const Vector &	iM,
		const Vector &	b
	)

Solves linear system of the form Ax = b using CGM with Jacobi preconditioner. The sparse matrix must be symmetric positive definite. The preconditioner iM must contain the inverse diagonal entries of A.

Parameters

A	sparse matrix.
iM	Jacobi preconditioning vector.
b	forcing vector.

Returns: solution vector.

void sparseMatrixProduct	(	const cl::Buffer &	vec_in,
		cl::Buffer &	vec_out,
		const cl::Buffer &	v,
		const cl::Buffer &	col,
		const cl::Buffer &	rowstart,
		const cl::Buffer &	rowlength,
		int	rowdim,
		int	padrowdim
	)

void timesEqualsScalar	(	cl::Buffer &	base,
		REAL	op,
		int	padn,
		int	n
	)

Parameters

base	buffer to set.
op	multiplication value.
padn	number of items padded to work-group size.
n	number of items to set.

void timesEqualsVector	(	cl::Buffer &	base,
		const cl::Buffer &	op,
		int	padn,
		int	n
	)

Parameters

base	buffer to set.
op	buffer to multiply.
padn	number of items padded to work-group size.
n	number of items to set.

void writeIntBuffer	(	int *	source,
		cl::Buffer &	dest,
		int	n
	)

Parameters

source	memory pointer to copy from.
dest	destination buffer.
n	number of items to copy.

void writeRealBuffer	(	REAL *	source,
		cl::Buffer &	dest,
		int	n
	)

Parameters

source	memory pointer to copy from.
dest	destination buffer.
n	number of items to copy.

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation