Pre-computed connectivity required for cell-based assembly. More...

#include <meshIterationStrategies.hpp>

Public Member Functions
	CellBasedData ()=delete

template<typename CellFaces , typename FaceNeighbour , typename FaceSign , typename MatrixColumnIdx >
	CellBasedData (localIdx sizeIn, CellFaces &&cellFacesIn, FaceNeighbour &&faceNeighbourIn, FaceSign &&faceSignIn, MatrixColumnIdx &&matrixColumnIdxIn)
	Construct from pre-computed connectivity arrays.

Public Attributes
localIdx	size
	Number of cells.

SegmentedVector< localIdx, localIdx >	cellFaces
	Cell-to-face stencil; segments correspond to cells, values are face indices.

Vector< localIdx >	faceNeighbour
	For each stencil entry: the cell on the other side of the face.

Vector< scalar >	faceSign
	Sign of the face contribution: +1 if this cell owns the face, -1 otherwise.

Vector< localIdx >	matrixColumnIdx
	Flat index into the CSR matrix values array for each stencil entry.

Detailed Description

Pre-computed connectivity required for cell-based assembly.

All arrays are indexed by the flat position within cellFaces, i.e. for cell c the relevant slice runs from cellFaces.offset(c) to cellFaces.offset(c+1).

Definition at line 103 of file meshIterationStrategies.hpp.

Constructor & Destructor Documentation

◆ CellBasedData() [1/2]

NeoN::la::CellBasedIterator::CellBasedData::CellBasedData ( )

delete

◆ CellBasedData() [2/2]

template<typename CellFaces , typename FaceNeighbour , typename FaceSign , typename MatrixColumnIdx >

NeoN::la::CellBasedIterator::CellBasedData::CellBasedData	(	localIdx	sizeIn,
		CellFaces &&	cellFacesIn,
		FaceNeighbour &&	faceNeighbourIn,
		FaceSign &&	faceSignIn,
		MatrixColumnIdx &&	matrixColumnIdxIn
	)

inline

Construct from pre-computed connectivity arrays.

A user-declared constructor is required (rather than relying on aggregate initialisation) because std::make_shared builds the object through std::construct_at, which performs parenthesised placement-new: new(p)\ CellBasedData(args...). Parenthesised initialisation of aggregates (C++20 P0960) is not implemented by the CUDA 12.4 nvcc/EDG front-end, so make_shared<CellBasedData>(...) fails there with "no instance of constructor ... matches".

The container parameters are templated so the constructor adapts to however the connectivity arrays are spelled at the call site (Vector<localIdx> or Vector<label>), avoiding a brittle exact type match across NeoN revisions.

Definition at line 127 of file meshIterationStrategies.hpp.