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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
 
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:

Template Parameters
Opthe workfunction to be applied on each element in the big shifted_first skeleton
Tthe type of the default value
ithe 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
visitorthe information about Op and input is passed so that later this information can be converted to a node in the dependence graph
in_flowa 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_sizethe size of this skeleton
producer_coordthe coordinate of the producer element which is providing data to this parametric dependency
Template Parameters
FlowIndexthe flow index on which this request is sent

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