stapl::composition::nest_map_mr_factory Struct Reference

Customized implementation of a map_func(map_reduce()...) skeleton that is used for matrix vector multiplication. More...

Public Member Functions
default_coarsener	get_coarsener () const
template<typename Matrix , typename Vector >
task_id_mapper_type	get_task_id_mapper (Matrix &mv, Vector &vv) const
	Return a copy of the custom task to location mapper used to specialize the key distribution of the PARAGRAPH's Directory. More...
template<typename TGV , typename Matrix , typename Vector >
void	operator() (TGV const &tgv, Matrix &mv, Vector &vv)
	Function operator a factory called to populate the PARAGRAPH with tasks. More...
bool	finished () const
virtual void	reset ()
runtime::location_md const &	get_location_md (void) const noexcept
	Returns the location metadata of the location this object registered in.
runtime::location_md &	get_location_md (void) noexcept
	Returns the location metadata of the location this object registered in. noexcept More...
Distributed Object Management
rmi_handle::const_reference const &	get_rmi_handle (void) const noexcept
	Returns the associated rmi_handle.
rmi_handle::reference const &	get_rmi_handle (void) noexcept
	Returns the associated rmi_handle.
size_type	get_location_id (void) const noexcept
	Returns the location id of the local sub-object.
size_type	get_num_locations (void) const noexcept
	Returns the number of locations of the gang of this p_object.
void	advance_epoch (void)
	Advances the epoch of the object. More...
void	unlock (void)
	Used by lock_guard functionality in method of derived classes to request atomicity with respect to incoming RMIs. More...
void	lock (void)
	Used by lock_guard functionality in method of derived classes to request atomicity with respect to incoming RMIs. More...
bool	try_lock (void)
	Attempt to maintain atomicity with respect to incoming RMIs. More...

Public Types
typedef cm_res_view< my_container< double > >	sv_t
using	coarsener_type = default_coarsener
typedef map_view< sv_t >	result_type
typedef nest_map_mr_task_mapper	task_id_mapper_type
using	size_type = rmi_handle::size_type

Protected Member Functions
bool	initialized (void) const
void	reset_view_indices ()
	Reset the iterators over the view indices on this location. More...
void	set_view_index_iterator (std::size_t idx, view_index_iterator_base *ptr)
std::size_t	view_indices_size () const
view_index_iterator_base *	get_view_index_iterator (std::size_t n) const

Protected Attributes
bool	m_finished
	Stores whether the derived factory has finished specifying tasks.

Detailed Description

Customized implementation of a map_func(map_reduce()...) skeleton that is used for matrix vector multiplication.

The key implementation features are the use of logical two dimension processor layout to reduce communication and the replication of computation across subportions of processors to further reduce communication caused by vector updates.

Member Function Documentation

get_task_id_mapper()

template<typename Matrix , typename Vector >

task_id_mapper_type stapl::composition::nest_map_mr_factory::get_task_id_mapper	(	Matrix &	mv,
		Vector &	vv
	)		const

Return a copy of the custom task to location mapper used to specialize the key distribution of the PARAGRAPH's Directory.

Returns

A key mapper which knows how tasks for this PARAGRAPH will be distributed among locations.

Parameters

mv	A view over the input matrix.
vv	A view over the input vector.

operator()()

template<typename TGV , typename Matrix , typename Vector >

void stapl::composition::nest_map_mr_factory::operator()	(	TGV const &	tgv,
		Matrix &	mv,
		Vector &	vv
	)

Function operator a factory called to populate the PARAGRAPH with tasks.

Parameters

tgv	The paragraph_view.
mv	A view over the input matrix.
vv	A view over the input vector.

reset_view_indices()

void stapl::task_factory_base::reset_view_indices ( )

protectedinherited

Reset the iterators over the view indices on this location.

This is used in factories where multiple tasks will be generated for each view element to be processed.

get_location_md()

runtime::location_md& stapl::p_object::get_location_md ( void  )

noexceptinherited

Returns the location metadata of the location this object registered in. noexcept

noexcept

advance_epoch()

void stapl::p_object::advance_epoch ( void  )

inherited

Advances the epoch of the object.

Advancing the epoch will flush any pending RMIs. It will also increase the epoch of the current gang if the object is not a named object.

unlock()

void stapl::p_object::unlock ( void  )

inherited

Used by lock_guard functionality in method of derived classes to request atomicity with respect to incoming RMIs.

Mutates counter in the associated runqueue.

lock()

void stapl::p_object::lock ( void  )

inherited

Used by lock_guard functionality in method of derived classes to request atomicity with respect to incoming RMIs.

Mutates counter in the associated runqueue.

try_lock()

bool stapl::p_object::try_lock ( void  )

inherited

Attempt to maintain atomicity with respect to incoming RMIs.

Mutates counter in the associated runqueue.

Returns

true if the lock was able to be acquired. false if it is already locked.

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

• new_map_transformations.hpp