My Project
Loading...
Searching...
No Matches
Opm::Accelerator::rocalutionSolverBackend< Scalar, block_size > Class Template Reference

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

#include <rocalutionSolverBackend.hpp>

Inheritance diagram for Opm::Accelerator::rocalutionSolverBackend< Scalar, block_size >:
Opm::Accelerator::BdaSolver< 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.
 
 ~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, BdaResult &res) override
 Solve linear system, A*x = b, matrix A must be in blocked-CSR format.
 
void get_result (Scalar *x) override
 Get result after linear solve, and peform postprocessing if necessary.
 
- Public Member Functions inherited from Opm::Accelerator::BdaSolver< Scalar, block_size >
 BdaSolver (int linear_solver_verbosity, int max_it, Scalar tolerance_)
 Construct a BdaSolver.
 
 BdaSolver (int linear_solver_verbosity, int max_it, Scalar tolerance_, unsigned int deviceID_)
 
 BdaSolver (int linear_solver_verbosity, int max_it, double tolerance_, unsigned int platformID_, unsigned int deviceID_)
 
virtual ~BdaSolver ()=default
 Define virtual destructor, so that the derivedclass destructor will be called.
 

Additional Inherited Members

- Protected Attributes inherited from Opm::Accelerator::BdaSolver< 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

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

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

Constructor & Destructor Documentation

◆ rocalutionSolverBackend()

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_verbosityverbosity of rocalutionSolver
[in]maxitmaximum number of iterations for rocalutionSolver
[in]tolerancerequired relative tolerance for rocalutionSolver

Member Function Documentation

◆ get_result()

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]xresulting 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::rocalutionSolverBackend< 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]matrixmatrix A
[in]binput vector, contains N values
[in]jacMatrixmatrix for preconditioner
[in]wellContribsWellContributions, to apply them separately, instead of adding them to matrix A
[in,out]ressummary of solver result
Returns
status code

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


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