Opm::Accelerator::rocsparseSolverBackend< Scalar, block_size > Class Template Reference

This class implements a rocsparse-based ilu0-bicgstab solver on GPU. More...

#include <rocsparseSolverBackend.hpp>

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

Public Member Functions
	rocsparseSolverBackend (int linear_solver_verbosity, int maxit, Scalar tolerance, unsigned int platformID, unsigned int deviceID, std::string linsolver)
	rocsparseSolverBackend (int linear_solver_verbosity, int maxit, Scalar tolerance, bool opencl_ilu_reorder)
	For the CPR coarse solver. More...
	~rocsparseSolverBackend ()
	Destroy a openclSolver, and free memory. More...
SolverStatus	solve_system (std::shared_ptr< BlockedMatrix< Scalar > > matrix, Scalar *b, std::shared_ptr< BlockedMatrix< Scalar > > jacMatrix, WellContributions< Scalar > &wellContribs, BdaResult &res) override
void	get_result (Scalar *x) override

Detailed Description

template<class Scalar, unsigned int block_size>
class Opm::Accelerator::rocsparseSolverBackend< Scalar, block_size >

This class implements a rocsparse-based ilu0-bicgstab solver on GPU.

Constructor & Destructor Documentation

rocsparseSolverBackend() [1/2]

template<class Scalar , unsigned int block_size>

Opm::Accelerator::rocsparseSolverBackend< Scalar, block_size >::rocsparseSolverBackend	(	int	linear_solver_verbosity,
		int	maxit,
		Scalar	tolerance,
		unsigned int	platformID,
		unsigned int	deviceID,
		std::string	linsolver
	)

Construct a rocsparseSolver

Parameters

[in]	linear_solver_verbosity	verbosity of rocsparseSolver
[in]	maxit	maximum number of iterations for rocsparseSolver
[in]	tolerance	required relative tolerance for rocsparseSolver
[in]	platformID	the OpenCL platform to be used
[in]	deviceID	the device to be used
[in]	linsolver	indicating the preconditioner, equal to the –linear-solver cmdline argument

rocsparseSolverBackend() [2/2]

template<class Scalar , unsigned int block_size>

Opm::Accelerator::rocsparseSolverBackend< Scalar, block_size >::rocsparseSolverBackend	(	int	linear_solver_verbosity,
		int	maxit,
		Scalar	tolerance,
		bool	opencl_ilu_reorder
	)

For the CPR coarse solver.

~rocsparseSolverBackend()

template<class Scalar , unsigned int block_size>

Opm::Accelerator::rocsparseSolverBackend< Scalar, block_size >::~rocsparseSolverBackend

(

)

Destroy a openclSolver, and free memory.

Member Function Documentation

get_result()

template<class Scalar , unsigned int block_size>

void Opm::Accelerator::rocsparseSolverBackend< 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

Implements Opm::Accelerator::BdaSolver< Scalar, block_size >.

solve_system()

template<class Scalar , unsigned int block_size>

SolverStatus Opm::Accelerator::rocsparseSolverBackend< Scalar, block_size >::solve_system ( std::shared_ptr< BlockedMatrix< Scalar > >  matrix, Scalar *  b, std::shared_ptr< BlockedMatrix< Scalar > >  jacMatrix, WellContributions< Scalar > &  wellContribs, BdaResult &  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

Returns

status code

Implements Opm::Accelerator::BdaSolver< Scalar, block_size >.

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

• rocsparseSolverBackend.hpp