Reference documentation for deal.II version Git bac59d2 20170624 17:40:56 0400

#include <deal.II/lac/trilinos_solver.h>
Classes  
struct  AdditionalData 
Public Member Functions  
SolverDirect (SolverControl &cn, const AdditionalData &data=AdditionalData())  
virtual  ~SolverDirect () 
void  initialize (const SparseMatrix &A) 
void  solve (MPI::Vector &x, const MPI::Vector &b) 
void  solve (const SparseMatrix &A, MPI::Vector &x, const MPI::Vector &b) 
void  solve (const SparseMatrix &A,::Vector< double > &x, const ::Vector< double > &b) 
void  solve (const SparseMatrix &A,::LinearAlgebra::distributed::Vector< double > &x, const ::LinearAlgebra::distributed::Vector< double > &b) 
SolverControl &  control () const 
Static Public Member Functions  
static::ExceptionBase &  ExcTrilinosError (int arg1) 
Private Member Functions  
void  do_solve () 
Private Attributes  
SolverControl &  solver_control 
std::shared_ptr< Epetra_LinearProblem >  linear_problem 
std::shared_ptr< Amesos_BaseSolver >  solver 
const AdditionalData  additional_data 
An implementation of Trilinos direct solvers (using the Amesos package). The data field AdditionalData::solver_type can be used to specify the type of solver. It allows the use of builtin solvers Amesos_Klu as well as thirdparty solvers Amesos_Superludist or Amesos_Mumps.
For instructions on how to install Trilinos for use with direct solvers other than KLU, see the link to the Trilinos installation instructions linked to from the deal.II ReadMe file.
Definition at line 613 of file trilinos_solver.h.
TrilinosWrappers::SolverDirect::SolverDirect  (  SolverControl &  cn, 
const AdditionalData &  data = AdditionalData() 

) 
Constructor. Takes the solver control object and creates the solver.
Definition at line 724 of file trilinos_solver.cc.

virtual 
Destructor.
Definition at line 733 of file trilinos_solver.cc.
void TrilinosWrappers::SolverDirect::initialize  (  const SparseMatrix &  A  ) 
Initializes the direct solver for the matrix A
and creates a factorization for it with the package chosen from the additional data structure. Note that there is no need for a preconditioner here and solve() is not called.
Definition at line 746 of file trilinos_solver.cc.
void TrilinosWrappers::SolverDirect::solve  (  MPI::Vector &  x, 
const MPI::Vector &  b  
) 
Solve the linear system Ax=b
based on the package set in intialize(). Note the matrix is not refactorized during this call.
Definition at line 793 of file trilinos_solver.cc.
void TrilinosWrappers::SolverDirect::solve  (  const SparseMatrix &  A, 
MPI::Vector &  x,  
const MPI::Vector &  b  
) 
Solve the linear system Ax=b
. Creates a factorization of the matrix with the package chosen from the additional data structure and performs the solve. Note that there is no need for a preconditioner here.
Definition at line 874 of file trilinos_solver.cc.
void TrilinosWrappers::SolverDirect::solve  (  const SparseMatrix &  A, 
::Vector< double > &  x,  
const ::Vector< double > &  b  
) 
Solve the linear system Ax=b
. This class works with Trilinos matrices, but takes deal.II serial vectors as argument. Since these vectors are not distributed, this function does only what you expect in case the matrix is serial (i.e., locally owned). Otherwise, an exception will be thrown.
Definition at line 891 of file trilinos_solver.cc.
void TrilinosWrappers::SolverDirect::solve  (  const SparseMatrix &  A, 
::LinearAlgebra::distributed::Vector< double > &  x,  
const ::LinearAlgebra::distributed::Vector< double > &  b  
) 
Solve the linear system Ax=b
for deal.II's own parallel vectors. Creates a factorization of the matrix with the package chosen from the additional data structure and performs the solve. Note that there is no need for a preconditioner here.
Definition at line 919 of file trilinos_solver.cc.
SolverControl & TrilinosWrappers::SolverDirect::control  (  )  const 
Access to object that controls convergence.
Definition at line 739 of file trilinos_solver.cc.

private 
Actually performs the operations for solving the linear system, including the factorization and forward and backward substitution.
Definition at line 821 of file trilinos_solver.cc.

private 
Reference to the object that controls convergence of the iterative solver. In fact, for these Trilinos wrappers, Trilinos does so itself, but we copy the data from this object before starting the solution process, and copy the data back into it afterwards.
Definition at line 743 of file trilinos_solver.h.

private 
A structure that collects the Trilinos sparse matrix, the right hand side vector and the solution vector, which is passed down to the Trilinos solver.
Definition at line 750 of file trilinos_solver.h.

private 
A structure that contains the Trilinos solver and preconditioner objects.
Definition at line 756 of file trilinos_solver.h.

private 
Store a copy of the flags for this particular solver.
Definition at line 761 of file trilinos_solver.h.