dolfin::PETScDMCollection Class Reference

#include <PETScDMCollection.h>

Inheritance diagram for dolfin::PETScDMCollection:

Collaboration diagram for dolfin::PETScDMCollection:

Public Member Functions
	PETScDMCollection (std::vector< std::shared_ptr< const FunctionSpace >> function_spaces)
	~PETScDMCollection ()
	Destructor.
DM	get_dm (int i)
void	check_ref_count () const
	These are test/debugging functions that will be removed.
void	reset (int i)
	Debugging use - to be removed.
Public Member Functions inherited from dolfin::PETScObject
	PETScObject ()
	Constructor. Ensures that PETSc has been initialised.
virtual	~PETScObject ()
	Destructor.

Static Public Member Functions
static std::shared_ptr< PETScMatrix >	create_transfer_matrix (const FunctionSpace &coarse_space, const FunctionSpace &fine_space)
Static Public Member Functions inherited from dolfin::PETScObject
static void	petsc_error (int error_code, std::string filename, std::string petsc_function)
	Print error message for PETSc calls that return an error.

Detailed Description

This class builds and stores of collection of PETSc DM objects from a hierarchy of FunctionSpaces objects. The DM objects are used to construct multigrid solvers via PETSc.

Warning: This classs is highly experimental and will change

Constructor & Destructor Documentation

PETScDMCollection::PETScDMCollection

(

std::vector< std::shared_ptr< const FunctionSpace >>

function_spaces

)

Construct PETScDMCollection from a vector of FunctionSpaces. The vector of FunctionSpaces is stored from coarse to fine.

Member Function Documentation

std::shared_ptr< PETScMatrix > PETScDMCollection::create_transfer_matrix ( const FunctionSpace &  coarse_space, const FunctionSpace &  fine_space  )

static

Create the interpolation matrix from the coarse to the fine space (prolongation matrix)

DM PETScDMCollection::get_dm

(

int

i

)

Return the ith DM objects. The coarest DM has index 0. Use i=-1 to get the DM for the finest level, i=-2 for the DM for the second finest level, etc.

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

• /home/fenics/shared/dolfin/fem/PETScDMCollection.h
• /home/fenics/shared/dolfin/fem/PETScDMCollection.cpp