dftfe::dealiiLinearSolver Class Reference

dealii linear solver class wrapper More...

#include <dealiiLinearSolver.h>

Inheritance diagram for dftfe::dealiiLinearSolver:

Public Types
enum	solverType { CG = 0 , GMRES }

Public Member Functions
	dealiiLinearSolver (const MPI_Comm &mpi_comm_parent, const MPI_Comm &mpi_comm_domain, const solverType type)
	Constructor.
void	solve (dealiiLinearSolverProblem &problem, const double absTolerance, const dftfe::uInt maxNumberIterations, const dftfe::Int debugLevel=0, bool distributeFlag=true)
	Solve linear system, A*x=Rhs.
Public Member Functions inherited from dftfe::linearSolver
	linearSolver ()
	Constructor.

Private Attributes
const solverType	d_type
	enum denoting the choice of the dealii solver
distributedCPUVec< double >	gvec
	define some temporary vectors
distributedCPUVec< double >	dvec
distributedCPUVec< double >	hvec
const MPI_Comm	d_mpiCommParent
const MPI_Comm	mpi_communicator
const dftfe::uInt	n_mpi_processes
const dftfe::uInt	this_mpi_process
dealii::ConditionalOStream	pcout

Detailed Description

dealii linear solver class wrapper

Author

Sambit Das

Member Enumeration Documentation

solverType

enum dftfe::dealiiLinearSolver::solverType

Enumerator
CG
GMRES

Constructor & Destructor Documentation

dealiiLinearSolver()

dftfe::dealiiLinearSolver::dealiiLinearSolver	(	const MPI_Comm &	mpi_comm_parent,
		const MPI_Comm &	mpi_comm_domain,
		const solverType	type )

Constructor.

Parameters

mpi_comm_parent	parent mpi communicato
mpi_comm_domain	domain mpi communicator
type	enum specifying the choice of the dealii linear solver

Member Function Documentation

solve()

void dftfe::dealiiLinearSolver::solve ( dealiiLinearSolverProblem & problem, const double absTolerance, const dftfe::uInt maxNumberIterations, const dftfe::Int debugLevel = 0, bool distributeFlag = true )

virtual

Solve linear system, A*x=Rhs.

Parameters

problem	linearSolverProblem object (functor) to compute Rhs and A*x, and preconditioning
relTolerance	Tolerance (relative) required for convergence.
maxNumberIterations	Maximum number of iterations.
debugLevel	Debug output level: 0 - no debug output 1 - limited debug output 2 - all debug output.

Implements dftfe::linearSolver.

Member Data Documentation

d_mpiCommParent

const MPI_Comm dftfe::dealiiLinearSolver::d_mpiCommParent

private

d_type

const solverType dftfe::dealiiLinearSolver::d_type

private

enum denoting the choice of the dealii solver

dvec

distributedCPUVec<double> dftfe::dealiiLinearSolver::dvec

private

gvec

distributedCPUVec<double> dftfe::dealiiLinearSolver::gvec

private

define some temporary vectors

hvec

distributedCPUVec<double> dftfe::dealiiLinearSolver::hvec

private

mpi_communicator

const MPI_Comm dftfe::dealiiLinearSolver::mpi_communicator

private

n_mpi_processes

const dftfe::uInt dftfe::dealiiLinearSolver::n_mpi_processes

private

pcout

dealii::ConditionalOStream dftfe::dealiiLinearSolver::pcout

private

this_mpi_process

const dftfe::uInt dftfe::dealiiLinearSolver::this_mpi_process

private

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

• workspace/include/dealiiLinearSolver.h