pfasst::SDC< time > Class Template Reference

Vanilla SDC controller. More...

#include <sdc.hpp>

Inheritance diagram for pfasst::SDC< time >:

Collaboration diagram for pfasst::SDC< time >:

Public Member Functions
virtual void	run ()
	Run vanilla SDC. More...
Public Member Functions inherited from pfasst::Controller< time >
	Controller ()
virtual	~Controller ()
virtual void	set_options (bool all_sweepers=true)
	Set options from command line etc. More...
virtual void	setup ()
	Basic setup routine for this controller. More...
virtual void	set_duration (time t0, time tend, time dt, size_t niters)
	Set basic time scope of the Controller. More...
virtual void	add_level (shared_ptr< ISweeper< time >> sweeper, shared_ptr< ITransfer< time >> transfer=shared_ptr< ITransfer< time >>(nullptr), bool coarse=true)
	Adding a level to the controller. More...
virtual size_t	nlevels ()
	Total number of levels controlled by this Controller. More...
template<typename R = ISweeper<time>>
shared_ptr< R >	get_level (size_t level)
	Get sweeper for level with index level. More...
template<typename R = ISweeper<time>>
shared_ptr< R >	get_finest ()
	Get coarsest level. More...
template<typename R = ISweeper<time>>
shared_ptr< R >	get_coarsest ()
	Get coarsest level. More...
template<typename R = ITransfer<time>>
shared_ptr< R >	get_transfer (size_t level)
	Retreive transfer operator for level level. More...
virtual size_t	get_step ()
	Get current time step index. More...
virtual void	set_step (size_t n)
	Set current time step index. More...
virtual time	get_step_size ()
	Get width of current time step. More...
time	get_dt ()
	Get width of current time step (alias for get_step_size). More...
virtual time	get_time ()
	Get start time point of current time step. More...
time	get_t ()
	Get start time point of current time step (alias for get_time). More...
virtual void	advance_time (size_t nsteps=1)
	Advance to a following time step. More...
virtual time	get_end_time ()
	Get end time point of last time step. More...
virtual size_t	get_iteration ()
	Get current iteration index of current time step. More...
virtual void	set_iteration (size_t iter)
	Set current iteration of current time step. More...
virtual void	advance_iteration ()
	Advance to the next iteration. More...
virtual size_t	get_max_iterations ()
	Get maximum number of allowed iterations per time step. More...
virtual LevelIter	finest ()
	Convenience accessor to the finest level. More...
virtual LevelIter	coarsest ()
	Convenience accessor to the coarsest level. More...

Additional Inherited Members
Protected Attributes inherited from pfasst::Controller< time >
deque< shared_ptr< ISweeper< time > > >	levels
	Ordered list of all levels. More...
deque< shared_ptr< ITransfer< time > > >	transfer
	Ordered list of transfer operators for levels. More...
size_t	step
	Current time step index. More...
size_t	iteration
	Current iteration index on current time step. More...
size_t	max_iterations
	Maximum iterations per time step. More...
time	t
	\( t_0 \) of current time step. More...
time	dt
	Width of current time step (\( \Delta t \)). More...
time	tend
	\( T_{end} \) of last time step. More...

Detailed Description

template<typename time = time_precision>
class pfasst::SDC< time >

Vanilla SDC controller.

Template Parameters

time	time precision

See also

Controller on how to set up the controller and feed it with sweepers to do the actual integration.

Definition at line 24 of file sdc.hpp.

Member Function Documentation

template<typename time >

void pfasst::SDC< time >::run ( )

virtual

Run vanilla SDC.

For each time step at most a total of Controller::get_max_iterations() iterations will be done on the configured sweeper (which happens to be the only in Controller::levels).

On the first iteration on a time step, ISweeper::predict() will get called and ISweeper::sweep() on all subsequent iterations on the same time step. After each ISweeper::post_predict() or ISweeper::post_sweep() call ISweeper::converged() will get checked to shortcut the iterations. The next iteration is introduced by Controller::advance_iteration().

Once the maximum number of iterations is reached (or the sweeper has converged before) that, the ISweeper::post_step() hook is triggered followed by ISweeper::advance() to complete the time step and advance to the next via Controller::advance_time() until Controller::get_time() is equal or greater Controller::get_end_time().

Definition at line 22 of file sdc_impl.hpp.

Referenced by pfasst::examples::scalar::run_scalar_sdc(), pfasst::examples::advection_diffusion::run_vanilla_sdc(), and pfasst::examples::vdp::run_vdp_sdc().

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

• include/pfasst/controller/sdc.hpp
• src/pfasst/controller/sdc_impl.hpp