stapl::skeletons::skeletons_impl::shifted_first_pd< Op, T, i > Class Template Reference

This parametric dependency is used in the cases similar to the zip_pd, but whenever the reading from the first input flow is shifted by 1. More...

Public Member Functions
	shifted_first_pd (Op op, T nvalue)
	shifted_first_pd (shifted_first_pd const &other)
template<typename Coord , typename Visitor , typename In >
void	case_of (Coord const &, Coord const &coord, Visitor &&visitor, In &&in_flow) const
	If coord is <idx, ...> it wraps the Op with the following inputs and sends it to the visitor along with the m_op. More...
template<typename Visitor , typename In , std::size_t... Indices>
void	apply_case_of (std::size_t id, Visitor &&visitor, In &&in_flow, index_sequence< Indices... > &&) const
template<typename Size , typename Coord , typename FlowIndex >
std::size_t	consumer_count (Size const &skeleton_size, Coord const &producer_coord, FlowIndex) const
	determines how many of the instances of this parametric dependency will be consuming from a producer with a given coordinate. This is a reverse query as compared to case_of. More...
Op	get_op () const
T	get_init_value () const
template<typename Coord >
int	get_result_id (Coord const &, Coord const &) const
template<typename Coord , typename Span >
void	configure (Coord &&, Span &&)

Public Types
using	op_type = Op

Static Public Attributes
static constexpr std::size_t	in_port_size = i
static constexpr std::size_t	op_arity = i

Detailed Description

template<typename Op, typename T, int i>
class stapl::skeletons::skeletons_impl::shifted_first_pd< Op, T, i >

This parametric dependency is used in the cases similar to the zip_pd, but whenever the reading from the first input flow is shifted by 1.

An example of the inputs sent to a spawned element by this skeleton:

• in<0>[index - 1]
• in<1>[index]
• in<2>[index]
• ...

Template Parameters

Op	the workfunction to be applied on each element in the big shifted_first skeleton
T	the type of the default value
i	the number of input flows

Member Function Documentation

case_of()

template<typename Op , typename T , int i>

template<typename Coord , typename Visitor , typename In >

void stapl::skeletons::skeletons_impl::shifted_first_pd< Op, T, i >::case_of	(	Coord const &	,
		Coord const &	coord,
		Visitor &&	visitor,
		In &&	in_flow
	)		const

If coord is <idx, ...> it wraps the Op with the following inputs and sends it to the visitor along with the m_op.

• in<0>[idx - 1]
• in<1>[idx]
• in<2>[idx]
• ...

Parameters

coord	<i, j, k, ...> where i < n, j < m, k < p
visitor	the information about Op and input is passed so that later this information can be converted to a node in the dependence graph
in_flow	a tuple of input flows to consume from

consumer_count()

template<typename Op , typename T , int i>

template<typename Size , typename Coord , typename FlowIndex >

std::size_t stapl::skeletons::skeletons_impl::shifted_first_pd< Op, T, i >::consumer_count	(	Size const &	skeleton_size,
		Coord const &	producer_coord,
		FlowIndex
	)		const

determines how many of the instances of this parametric dependency will be consuming from a producer with a given coordinate. This is a reverse query as compared to case_of.

Parameters

skeleton_size	the size of this skeleton
producer_coord	the coordinate of the producer element which is providing data to this parametric dependency

Template Parameters

FlowIndex

the flow index on which this request is sent

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

• shifted_first_pd.hpp