Functions
template<typename ScalarType >
void	pack_inner_cells (const grid::Grid2DDataScalar< ScalarType > &buffer, const grid::Grid4DDataScalar< ScalarType > &data, const int local_subdomain_id, const grid::BoundaryFace face)
	Packs the innermost real-cell layer adjacent to `face` into `buffer`.

template<typename ScalarType >
void	unpack_to_ghost (const grid::Grid2DDataScalar< ScalarType > &buffer, const grid::Grid4DDataScalar< ScalarType > &data, const int local_subdomain_id, const grid::BoundaryFace face, const grid::BoundaryDirection dir0, const grid::BoundaryDirection dir1)
	Writes `buffer` into the ghost cell layer at `face`.

template<typename ScalarType , int VecDim>
void	pack_inner_cells_vec (const grid::Grid3DDataScalar< ScalarType > &buffer, const grid::Grid4DDataVec< ScalarType, VecDim > &data, const int local_subdomain_id, const grid::BoundaryFace face)
	Packs the innermost real-cell layer adjacent to `face` into `buffer` for a vector field.

template<typename ScalarType , int VecDim>
void	unpack_to_ghost_vec (const grid::Grid3DDataScalar< ScalarType > &buffer, const grid::Grid4DDataVec< ScalarType, VecDim > &data, const int local_subdomain_id, const grid::BoundaryFace face, const grid::BoundaryDirection dir0, const grid::BoundaryDirection dir1)
	Writes `buffer` into the ghost cell layer at `face` for a vector field.

Function Documentation

◆ pack_inner_cells()

template<typename ScalarType >

void terra::communication::shell::fv_detail::pack_inner_cells	(	const grid::Grid2DDataScalar< ScalarType > &	buffer,
		const grid::Grid4DDataScalar< ScalarType > &	data,
		const int	local_subdomain_id,
		const grid::BoundaryFace	face
	)

Packs the innermost real-cell layer adjacent to face into buffer.

For a face whose normal is in direction d:

Ghost layer lives at data index 0 (P0 side) or extent-1 (P1 side) in d.
The innermost real cells are at index 1 (P0) or extent-2 (P1).

The two varying dimensions are packed in forward order: buffer(i, j) = data(id, ..., i+1, j+1, ...)

The receiver applies BoundaryDirection reversal during unpack if needed.

◆ pack_inner_cells_vec()

template<typename ScalarType , int VecDim>

void terra::communication::shell::fv_detail::pack_inner_cells_vec	(	const grid::Grid3DDataScalar< ScalarType > &	buffer,
		const grid::Grid4DDataVec< ScalarType, VecDim > &	data,
		const int	local_subdomain_id,
		const grid::BoundaryFace	face
	)

Packs the innermost real-cell layer adjacent to face into buffer for a vector field.

buffer has shape [ni, nj, VecDim] and packs all VecDim components together so a single MPI message per face suffices.

◆ unpack_to_ghost()

template<typename ScalarType >

void terra::communication::shell::fv_detail::unpack_to_ghost	(	const grid::Grid2DDataScalar< ScalarType > &	buffer,
		const grid::Grid4DDataScalar< ScalarType > &	data,
		const int	local_subdomain_id,
		const grid::BoundaryFace	face,
		const grid::BoundaryDirection	dir0,
		const grid::BoundaryDirection	dir1
	)

Writes buffer into the ghost cell layer at face.

Parameters

dir0	Iteration direction for the first varying dimension.
dir1	Iteration direction for the second varying dimension.

Direction mapping (from SubdomainNeighborhood::neighborhood_face()): FORWARD: buffer index i → data index i+1 BACKWARD: buffer index i → data index (extent - 2 - i)

◆ unpack_to_ghost_vec()