Opm::Accelerator::cusparseSolverBackend< block_size > Class Template Reference

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

#include <cusparseSolverBackend.hpp>

Inheritance diagram for Opm::Accelerator::cusparseSolverBackend< block_size >:

Public Member Functions
	cusparseSolverBackend (int linear_solver_verbosity, int maxit, double tolerance, unsigned int deviceID)
	~cusparseSolverBackend ()
	Destroy a cusparseSolver, and free memory. 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

Protected Attributes
unsigned int	platformID = 0

Detailed Description

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

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

Constructor & Destructor Documentation

cusparseSolverBackend()

template<unsigned int block_size>

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

Construct a cusparseSolver

Parameters

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

~cusparseSolverBackend()

template<unsigned int block_size>

Opm::Accelerator::cusparseSolverBackend< block_size >::~cusparseSolverBackend

(

)

Destroy a cusparseSolver, and free memory.

Member Function Documentation

get_result()

template<unsigned int block_size>

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

overridevirtual

Get resulting vector x after linear solve, also includes post processing 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::cusparseSolverBackend< 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	contains all 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 >.

Member Data Documentation

platformID

template<unsigned int block_size>

unsigned int Opm::Accelerator::BdaSolver< block_size >::platformID = 0

protectedinherited

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

• cusparseSolverBackend.hpp