This class implements a rocalution based linear solver solver on GPU It uses ilu0-bicgstab. More...

Inheritance diagram for Opm::Accelerator::rocalutionSolverBackend< Scalar, block_size >:

Public Member Functions
	rocalutionSolverBackend (int linear_solver_verbosity, int maxit, Scalar tolerance)
	Construct a rocalutionSolver also initialize rocalution library and rocalution variables. More...

	~rocalutionSolverBackend ()
	Destroy a rocalutionSolver, and free memory.

SolverStatus	solve_system (std::shared_ptr< BlockedMatrix< Scalar >> matrix, Scalar *b, std::shared_ptr< BlockedMatrix< Scalar >> jacMatrix, WellContributions< Scalar > &wellContribs, GpuResult &res) override
	Solve linear system, A*x = b, matrix A must be in blocked-CSR format. More...

void	get_result (Scalar *x) override
	Get result after linear solve, and peform postprocessing if necessary. More...

Public Member Functions inherited from Opm::Accelerator::GpuSolver< Scalar, block_size >
	GpuSolver (int linear_solver_verbosity, int max_it, Scalar tolerance_)
	Construct a GpuSolver. More...

	GpuSolver (int linear_solver_verbosity, int max_it, Scalar tolerance_, unsigned int deviceID_)

	GpuSolver (int linear_solver_verbosity, int max_it, double tolerance_, unsigned int platformID_, unsigned int deviceID_)

virtual	~GpuSolver ()=default
	Define virtual destructor, so that the derivedclass destructor will be called.

Additional Inherited Members
Protected Attributes inherited from Opm::Accelerator::GpuSolver< Scalar, block_size >
int	verbosity = 0

int	maxit = 200

Scalar	tolerance = 1e-2

int	N

int	Nb

int	nnz

int	nnzb

unsigned int	platformID = 0

unsigned int	deviceID = 0

bool	initialized = false

Detailed Description

This class implements a rocalution based linear solver solver on GPU It uses ilu0-bicgstab.

Constructor & Destructor Documentation

template<class Scalar , unsigned int block_size>

Opm::Accelerator::rocalutionSolverBackend< Scalar, block_size >::rocalutionSolverBackend	(	int	linear_solver_verbosity,
		int	maxit,
		Scalar	tolerance
	)

Construct a rocalutionSolver also initialize rocalution library and rocalution variables.

Parameters

[in]	linear_solver_verbosity	verbosity of rocalutionSolver
[in]	maxit	maximum number of iterations for rocalutionSolver
[in]	tolerance	required relative tolerance for rocalutionSolver

template<class Scalar , unsigned int block_size>

void Opm::Accelerator::rocalutionSolverBackend< Scalar, block_size >::get_result ( Scalar * x )

overridevirtual

Get result after linear solve, and peform postprocessing if necessary.

Parameters

[in,out] x resulting x vector, caller must guarantee that x points to a valid array

template<class Scalar , unsigned int block_size>

SolverStatus Opm::Accelerator::rocalutionSolverBackend< Scalar, block_size >::solve_system	(	std::shared_ptr< BlockedMatrix< Scalar >>	matrix,
		Scalar *	b,
		std::shared_ptr< BlockedMatrix< Scalar >>	jacMatrix,
		WellContributions< Scalar > &	wellContribs,
		GpuResult &	res
	)

overridevirtual

Solve linear system, A*x = b, matrix A must be in blocked-CSR format.

Parameters

[in]	matrix	matrix A
[in]	b	input vector, contains N values
[in]	jacMatrix	matrix for preconditioner
[in]	wellContribs	WellContributions, to apply them separately, instead of adding them to matrix A
[in,out]	res	summary of solver result

The documentation for this class was generated from the following files: