Directing class of FieldValueCache. More...

#include <field_value_cache.hh>

Collaboration diagram for ElementCacheMap:

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Public Member Functions
	ElementCacheMap ()
	Constructor. More...

	~ElementCacheMap ()
	Destructor. More...

void	init (std::shared_ptr< EvalPoints > eval_points)
	Init cache. More...

void	create_patch ()
	Create patch of cached elements before reading data to cache. More...

void	clear_element_eval_points_map ()
	Reset all items of elements_eval_points_map. More...

void	start_elements_update ()
	Start update of cache. More...

void	finish_elements_update ()
	Finish update after reading data to cache. More...

std::shared_ptr< EvalPoints >	eval_points () const
	Getter of eval_points object. More...

int	element_eval_point (unsigned int i_elem_in_cache, unsigned int i_eval_point) const

unsigned int	elm_idx_on_position (unsigned pos) const
	Return mesh_idx of element stored at given position of ElementCacheMap. More...

unsigned int	position_in_cache (unsigned mesh_elm_idx) const
	Return position of element stored in ElementCacheMap. More...

unsigned int	n_regions () const
	Return number of stored regions. More...

unsigned int	n_elements () const
	Return number of stored elements. More...

unsigned int	element_chunk_begin (unsigned int elm_patch_idx) const
	Return begin position of element chunk in FieldValueCache. More...

unsigned int	element_chunk_end (unsigned int elm_patch_idx) const
	Return end position of element chunk in FieldValueCache. More...

unsigned int	region_chunk_begin (unsigned int region_patch_idx) const
	Return begin position of region chunk in FieldValueCache. More...

unsigned int	region_chunk_end (unsigned int region_patch_idx) const
	Return end position of region chunk in FieldValueCache. More...

unsigned int	region_chunk_by_map_index (unsigned int r_idx) const
	Return begin position of region chunk specified by position in map. More...

unsigned int	region_idx_from_chunk_position (unsigned int chunk_pos) const
	Return begin position of region chunk specified by position in map. More...

const EvalPointData &	eval_point_data (unsigned int point_idx) const
	Return item of eval_point_data_ specified by its position. More...

template<class Value >
Value::return_type	get_value (const FieldValueCache< typename Value::element_type > &field_cache, unsigned int elem_patch_idx, unsigned int eval_points_idx) const
	Return value of evaluation point given by idx of element in patch and local point idx in EvalPoints from cache. More...

Static Public Attributes
static const unsigned int	undef_elem_idx = std::numeric_limits<unsigned int>::max()
	Index of invalid element in cache. More...

static const unsigned int	simd_size_double = 4

Protected Member Functions
void	set_element_eval_point (unsigned int i_elem_in_cache, unsigned int i_eval_point, int val) const
	Set item of `element_eval_points_map_`. More...

Protected Attributes
std::vector< unsigned int >	elm_idx_
	Vector of element indexes stored in cache. More...

std::shared_ptr< EvalPoints >	eval_points_
	Pointer to EvalPoints. More...

bool	ready_to_reading_
	Flag is set down during update of cache when this can't be read. More...

int *	element_eval_points_map_
	Holds data of evaluating points in patch. More...

RevertableList< EvalPointData >	eval_point_data_

Static Protected Attributes
static const int	unused_point = -1
	Special constant (. More...

static const unsigned int	regions_in_chunk = 3
	Base number of stored regions in patch. More...

static const unsigned int	elements_in_chunk = 10
	Base number of stored elements in patch. More...

Holds start positions and orders of region chunks and element chunks
RevertableList< unsigned int >	regions_starts_
	Start positions of elements in regions (size = n_regions+1, last value is end of last region) More...

RevertableList< unsigned int >	element_starts_
	Start positions of elements in eval_point_data_ (size = n_elements+1) More...

std::unordered_map< unsigned int, unsigned int >	element_to_map_
	Maps element_idx to element index in patch - TODO remove. More...

template<template< IntDim... > class DimAssembly>
class	GenericAssembly

Detailed Description

Directing class of FieldValueCache.

Manage storing and updating element data (elements of same dimension) to cache. We need only one shared instance of this class for all fields in equation (but typically for dim = 1,2,3).

IMPORTANT: Because there are combined bulk and boundary elements, we must use mesh_idx value to correct identification of elements.

TODO:

Generic assembly pass through the patch collecting needed quadrature points. (PASS ORDER)
Then we sort these points for efficient chae_upadate of the fields (CACHE ORDER)
We pass through the patch again evaluating actual integrals. This second pass is currently inefficient since we can not map efficiently from the PASS ORDER to the CACHE ORDER), this leads to many complications in quad point classes. We should:

have templated patch iteration mechanism, so that we can iterate through the evaluated integrals twice in consistent way performing: FIRST: collection of evaluation points SECOND: evaluation of integrals using the fields and fe_values Having a consistent implementation allows us to assign unique indices to the integral points on the patch.
Sort collected points, remove duplicities, mark new indices to the original list of points.
SECOND pass, use unique index to find the point in the cache.

Resulting simplifications:

no need for associating point operations for Edge, Coupling and Boundary points, we add assiciated eval point pairs as separate eval points with unique ids. Consistent integral iteration allows us to simply take two succesive points at the second pass.
no need for the matrix mapping (element, eval_point) to the cache index

Definition at line 151 of file field_value_cache.hh.

Constructor & Destructor Documentation

◆ ElementCacheMap()

ElementCacheMap::ElementCacheMap ( )

Constructor.

Definition at line 36 of file field_value_cache.cc.

◆ ~ElementCacheMap()

ElementCacheMap::~ElementCacheMap ( )

Destructor.

Definition at line 43 of file field_value_cache.cc.

Member Function Documentation

◆ clear_element_eval_points_map()

void ElementCacheMap::clear_element_eval_points_map ( )

inline

Reset all items of elements_eval_points_map.

Definition at line 173 of file field_value_cache.hh.

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◆ create_patch()

void ElementCacheMap::create_patch ( )

Create patch of cached elements before reading data to cache.

Definition at line 60 of file field_value_cache.cc.

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◆ element_chunk_begin()

unsigned int ElementCacheMap::element_chunk_begin ( unsigned int elm_patch_idx ) const

inline

Return begin position of element chunk in FieldValueCache.

Definition at line 232 of file field_value_cache.hh.

◆ element_chunk_end()

unsigned int ElementCacheMap::element_chunk_end ( unsigned int elm_patch_idx ) const

inline

Return end position of element chunk in FieldValueCache.

Definition at line 238 of file field_value_cache.hh.

◆ element_eval_point()

int ElementCacheMap::element_eval_point	(	unsigned int	i_elem_in_cache,
		unsigned int	i_eval_point
	)		const

inline

Definition at line 204 of file field_value_cache.hh.

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◆ elm_idx_on_position()

unsigned int ElementCacheMap::elm_idx_on_position ( unsigned pos ) const

inline

Return mesh_idx of element stored at given position of ElementCacheMap.

Definition at line 210 of file field_value_cache.hh.

◆ eval_point_data()

const EvalPointData& ElementCacheMap::eval_point_data ( unsigned int point_idx ) const

inline

Return item of eval_point_data_ specified by its position.

Definition at line 267 of file field_value_cache.hh.

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◆ eval_points()

std::shared_ptr<EvalPoints> ElementCacheMap::eval_points ( ) const

inline

Getter of eval_points object.

Definition at line 193 of file field_value_cache.hh.

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◆ finish_elements_update()

void ElementCacheMap::finish_elements_update ( )

Finish update after reading data to cache.

Definition at line 114 of file field_value_cache.cc.

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◆ get_value()

template<class Value >

Value::return_type ElementCacheMap::get_value	(	const FieldValueCache< typename Value::element_type > &	field_cache,
		unsigned int	elem_patch_idx,
		unsigned int	eval_points_idx
	)		const

inline

Return value of evaluation point given by idx of element in patch and local point idx in EvalPoints from cache.

Definition at line 273 of file field_value_cache.hh.

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◆ init()

void ElementCacheMap::init ( std::shared_ptr< EvalPoints > eval_points )

Init cache.

Definition at line 50 of file field_value_cache.cc.

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◆ n_elements()

unsigned int ElementCacheMap::n_elements ( ) const

inline

Return number of stored elements.

Definition at line 227 of file field_value_cache.hh.

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◆ n_regions()

unsigned int ElementCacheMap::n_regions ( ) const

inline

Return number of stored regions.

Definition at line 222 of file field_value_cache.hh.

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◆ position_in_cache()

unsigned int ElementCacheMap::position_in_cache ( unsigned mesh_elm_idx ) const

inline

Return position of element stored in ElementCacheMap.

Definition at line 215 of file field_value_cache.hh.

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◆ region_chunk_begin()

unsigned int ElementCacheMap::region_chunk_begin ( unsigned int region_patch_idx ) const

inline

Return begin position of region chunk in FieldValueCache.

Definition at line 244 of file field_value_cache.hh.

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◆ region_chunk_by_map_index()

unsigned int ElementCacheMap::region_chunk_by_map_index ( unsigned int r_idx ) const

inline

Return begin position of region chunk specified by position in map.

Definition at line 256 of file field_value_cache.hh.

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◆ region_chunk_end()

unsigned int ElementCacheMap::region_chunk_end ( unsigned int region_patch_idx ) const

inline

Return end position of region chunk in FieldValueCache.

Definition at line 250 of file field_value_cache.hh.

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◆ region_idx_from_chunk_position()

unsigned int ElementCacheMap::region_idx_from_chunk_position ( unsigned int chunk_pos ) const

inline

Return begin position of region chunk specified by position in map.

Definition at line 262 of file field_value_cache.hh.

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◆ set_element_eval_point()

void ElementCacheMap::set_element_eval_point	(	unsigned int	i_elem_in_cache,
		unsigned int	i_eval_point,
		int	val
	)		const

inlineprotected

Set item of element_eval_points_map_.

Definition at line 293 of file field_value_cache.hh.

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◆ start_elements_update()

void ElementCacheMap::start_elements_update ( )

Start update of cache.

Definition at line 110 of file field_value_cache.cc.

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Friends And Related Function Documentation

◆ GenericAssembly

template<template< IntDim... > class DimAssembly>

friend class GenericAssembly

friend

Definition at line 343 of file field_value_cache.hh.

Member Data Documentation

◆ element_eval_points_map_

int* ElementCacheMap::element_eval_points_map_

protected

Holds data of evaluating points in patch.

This array provides indexes to FieldValueCache.

This one dimensional array behaves like two dimensional factually. Size is set to 'n_cached_elements * n_eval_points' and items are accessible through two indices:

1: Over elements holds in ElementCacheMap 2: Over EvalPoints for each element

Use always and only methods element_eval_point for read and set_element_eval_point (for write) to access to items!

Array is filled in those three steps: a. Reset - all items are set to ElementCacheMap::unused_point b. Used eval points are set to ElementCacheMap::point_in_proggress c. Eval points marked in previous step are sequentially numbered

TODO improve description

Definition at line 327 of file field_value_cache.hh.

◆ element_starts_

RevertableList<unsigned int> ElementCacheMap::element_starts_

protected

Start positions of elements in eval_point_data_ (size = n_elements+1)

Definition at line 336 of file field_value_cache.hh.

◆ element_to_map_

std::unordered_map<unsigned int, unsigned int> ElementCacheMap::element_to_map_

protected

Maps element_idx to element index in patch - TODO remove.

Definition at line 337 of file field_value_cache.hh.

◆ elements_in_chunk

const unsigned int ElementCacheMap::elements_in_chunk = 10

staticprotected

Base number of stored elements in patch.

Definition at line 290 of file field_value_cache.hh.

◆ elm_idx_

std::vector<unsigned int> ElementCacheMap::elm_idx_

protected

Vector of element indexes stored in cache.

Definition at line 299 of file field_value_cache.hh.

◆ eval_point_data_

RevertableList<EvalPointData> ElementCacheMap::eval_point_data_

protected

Definition at line 330 of file field_value_cache.hh.

◆ eval_points_

std::shared_ptr<EvalPoints> ElementCacheMap::eval_points_

protected

Pointer to EvalPoints.

Definition at line 302 of file field_value_cache.hh.

◆ ready_to_reading_

bool ElementCacheMap::ready_to_reading_

protected

Flag is set down during update of cache when this can't be read.

Definition at line 305 of file field_value_cache.hh.

◆ regions_in_chunk

const unsigned int ElementCacheMap::regions_in_chunk = 3

staticprotected

Base number of stored regions in patch.

Definition at line 287 of file field_value_cache.hh.

◆ regions_starts_

RevertableList<unsigned int> ElementCacheMap::regions_starts_

protected

Start positions of elements in regions (size = n_regions+1, last value is end of last region)

Definition at line 335 of file field_value_cache.hh.

◆ simd_size_double

const unsigned int ElementCacheMap::simd_size_double = 4

static

Size of block (evaluation of FieldFormula) must be multiple of this value. TODO We should take this value from BParser and it should be dependent on processor configuration.

Definition at line 158 of file field_value_cache.hh.

◆ undef_elem_idx

const unsigned int ElementCacheMap::undef_elem_idx = std::numeric_limits<unsigned int>::max()

static

Index of invalid element in cache.

Definition at line 154 of file field_value_cache.hh.

◆ unused_point

const int ElementCacheMap::unused_point = -1

staticprotected

Special constant (.

See also: element_eval_points_map_).

Definition at line 284 of file field_value_cache.hh.

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

/opt/flow123d/flow123d/src/fields/field_value_cache.hh
/opt/flow123d/flow123d/src/fields/field_value_cache.cc

Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Static Protected Attributes

Holds start positions and orders of region chunks and element chunks

Detailed Description

Constructor & Destructor Documentation

◆ ElementCacheMap()

◆ ~ElementCacheMap()

Member Function Documentation

◆ clear_element_eval_points_map()

◆ create_patch()

◆ element_chunk_begin()

◆ element_chunk_end()

◆ element_eval_point()

◆ elm_idx_on_position()

◆ eval_point_data()

◆ eval_points()

◆ finish_elements_update()

◆ get_value()

◆ init()

◆ n_elements()

◆ n_regions()

◆ position_in_cache()

◆ region_chunk_begin()

◆ region_chunk_by_map_index()

◆ region_chunk_end()

◆ region_idx_from_chunk_position()

◆ set_element_eval_point()

◆ start_elements_update()

Friends And Related Function Documentation

◆ GenericAssembly

Member Data Documentation

◆ element_eval_points_map_

◆ element_starts_

◆ element_to_map_

◆ elements_in_chunk

◆ elm_idx_

◆ eval_point_data_

◆ eval_points_

◆ ready_to_reading_

◆ regions_in_chunk

◆ regions_starts_

◆ simd_size_double

◆ undef_elem_idx

◆ unused_point