Opm::Accelerator::rocsparseSolverBackend< 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< block_size >:

Public Member Functions
	rocsparseSolverBackend (int linear_solver_verbosity, int maxit, double tolerance, unsigned int platformID, unsigned int deviceID)
	~rocsparseSolverBackend ()
	For the CPR coarse solver. More...
SolverStatus	solve_system (std::shared_ptr< BlockedMatrix > matrix, double *b, std::shared_ptr< BlockedMatrix > jacMatrix, WellContributions &wellContribs, BdaResult &res) override
void	get_result (double *x) override

Detailed Description

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

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

Constructor & Destructor Documentation

rocsparseSolverBackend()

template<unsigned int block_size>

Opm::Accelerator::rocsparseSolverBackend< block_size >::rocsparseSolverBackend	(	int	linear_solver_verbosity,
		int	maxit,
		double	tolerance,
		unsigned int	platformID,
		unsigned int	deviceID
	)

Construct a openclSolver

Parameters

[in]	linear_solver_verbosity	verbosity of openclSolver
[in]	maxit	maximum number of iterations for openclSolver
[in]	tolerance	required relative tolerance for openclSolver
[in]	platformID	the OpenCL platform to be used
[in]	deviceID	the device to be used

~rocsparseSolverBackend()

template<unsigned int block_size>

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

(

)

For the CPR coarse solver.

Destroy a openclSolver, and free memory

Member Function Documentation

get_result()

template<unsigned int block_size>

void Opm::Accelerator::rocsparseSolverBackend< block_size >::get_result ( double *  x )

overridevirtual

Solve scalar linear system, for example a coarse system of an AMG preconditioner Data is already on the GPU 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< block_size >.

solve_system()

template<unsigned int block_size>

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

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

• rocsparseSolverBackend.hpp