peclet::core::decomp::BlockDecomposer< Dim > Class Template Reference

#include <block_decomposer.hpp>

Public Member Functions
	BlockDecomposer ()=default
	BlockDecomposer (std::size_t numBlocks, IVec< Dim > globalSize)
	BlockDecomposer (std::size_t numBlocks, IVec< Dim > globalSize, const std::vector< Real > &weights)
void	init (std::size_t numBlocks, IVec< Dim > globalSize)
	Build the decomposition of a globalSize cell grid into numBlocks blocks (equal cell count).
void	init (std::size_t numBlocks, IVec< Dim > globalSize, const std::vector< Real > &weights)
	Weighted ORB: balance the total weight per block instead of the cell count.
std::size_t	numBlocks () const
const IVec< Dim > &	globalSize () const
const std::vector< IVec< Dim > > &	origins () const
const std::vector< IVec< Dim > > &	sizes () const
Block< Dim >	block (std::size_t b) const
int	ownerOf (const IVec< Dim > &g) const
	Owning block index of a global cell coordinate. Caller must wrap into [0, globalSize) first.
void	flattenTree (std::vector< int > &splitDim, std::vector< Index > &splitVal) const
	Flatten the implicit ORB tree into two parallel arrays for a device-callable ownerOf: for node i, splitDim[i] is the split axis (−1 ⇒ leaf), splitVal[i] the split coordinate (internal) or the block index (leaf); children sit at 2i+1 / 2i+2.
Index	linearGlobal (const IVec< Dim > &g) const
	Global multi-index -> global linear index (x-fastest: I = x + y*nx + z*nx*ny).
IVec< Dim >	multiGlobal (Index lin) const
	Global linear index -> global multi-index (inverse of linearGlobal).

Detailed Description

template<int Dim>
class peclet::core::decomp::BlockDecomposer< Dim >

Definition at line 28 of file block_decomposer.hpp.

Constructor & Destructor Documentation

BlockDecomposer() [1/3]

template<int Dim>

peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer ( )

default

BlockDecomposer() [2/3]

template<int Dim>

peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer ( std::size_t  numBlocks, IVec< Dim >  globalSize  )

inline

Definition at line 31 of file block_decomposer.hpp.

References peclet::core::decomp::BlockDecomposer< Dim >::globalSize(), peclet::core::decomp::BlockDecomposer< Dim >::init(), and peclet::core::decomp::BlockDecomposer< Dim >::numBlocks().

BlockDecomposer() [3/3]

template<int Dim>

peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer ( std::size_t  numBlocks, IVec< Dim >  globalSize, const std::vector< Real > &  weights  )

inline

Definition at line 32 of file block_decomposer.hpp.

References peclet::core::decomp::BlockDecomposer< Dim >::globalSize(), peclet::core::decomp::BlockDecomposer< Dim >::init(), and peclet::core::decomp::BlockDecomposer< Dim >::numBlocks().

Member Function Documentation

init() [1/2]

template<int Dim>

void peclet::core::decomp::BlockDecomposer< Dim >::init ( std::size_t  numBlocks, IVec< Dim >  globalSize  )

inline

Build the decomposition of a globalSize cell grid into numBlocks blocks (equal cell count).

Definition at line 38 of file block_decomposer.hpp.

References peclet::core::decomp::BlockDecomposer< Dim >::globalSize(), and peclet::core::decomp::BlockDecomposer< Dim >::numBlocks().

Referenced by peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer(), and peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer().

init() [2/2]

template<int Dim>

void peclet::core::decomp::BlockDecomposer< Dim >::init ( std::size_t  numBlocks, IVec< Dim >  globalSize, const std::vector< Real > &  weights  )

inline

Weighted ORB: balance the total weight per block instead of the cell count.

weights is a per-cell weight array over the global grid (size == product(globalSize), x-fastest). Each split is placed on the integer cell boundary whose cumulative weight is closest to the sub-block's target fraction. Reduces bit-exactly to the unweighted init() when all weights are equal.

Definition at line 47 of file block_decomposer.hpp.

References peclet::core::decomp::BlockDecomposer< Dim >::globalSize(), and peclet::core::decomp::BlockDecomposer< Dim >::numBlocks().

numBlocks()

template<int Dim>

std::size_t peclet::core::decomp::BlockDecomposer< Dim >::numBlocks ( ) const

inline

Definition at line 58 of file block_decomposer.hpp.

Referenced by peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer(), peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer(), peclet::core::decomp::BlockDecomposer< Dim >::init(), and peclet::core::decomp::BlockDecomposer< Dim >::init().

globalSize()

template<int Dim>

const IVec< Dim > & peclet::core::decomp::BlockDecomposer< Dim >::globalSize ( ) const

inline

Definition at line 59 of file block_decomposer.hpp.

Referenced by peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer(), peclet::core::decomp::BlockDecomposer< Dim >::BlockDecomposer(), peclet::core::decomp::BlockDecomposer< Dim >::init(), and peclet::core::decomp::BlockDecomposer< Dim >::init().

origins()

template<int Dim>

const std::vector< IVec< Dim > > & peclet::core::decomp::BlockDecomposer< Dim >::origins ( ) const

inline

Definition at line 60 of file block_decomposer.hpp.

sizes()

template<int Dim>

const std::vector< IVec< Dim > > & peclet::core::decomp::BlockDecomposer< Dim >::sizes ( ) const

inline

Definition at line 61 of file block_decomposer.hpp.

block()

template<int Dim>

Block< Dim > peclet::core::decomp::BlockDecomposer< Dim >::block ( std::size_t  b ) const

inline

Definition at line 63 of file block_decomposer.hpp.

ownerOf()

template<int Dim>

int peclet::core::decomp::BlockDecomposer< Dim >::ownerOf ( const IVec< Dim > &  g ) const

inline

Owning block index of a global cell coordinate. Caller must wrap into [0, globalSize) first.

Definition at line 66 of file block_decomposer.hpp.

flattenTree()

template<int Dim>

void peclet::core::decomp::BlockDecomposer< Dim >::flattenTree ( std::vector< int > &  splitDim, std::vector< Index > &  splitVal  ) const

inline

Flatten the implicit ORB tree into two parallel arrays for a device-callable ownerOf: for node i, splitDim[i] is the split axis (−1 ⇒ leaf), splitVal[i] the split coordinate (internal) or the block index (leaf); children sit at 2i+1 / 2i+2.

Uploaded once by ParticleMigratorView so the per-particle owner lookup runs on the device (D1). Mirrors ownerOf exactly.

Definition at line 79 of file block_decomposer.hpp.

linearGlobal()

template<int Dim>

Index peclet::core::decomp::BlockDecomposer< Dim >::linearGlobal ( const IVec< Dim > &  g ) const

inline

Global multi-index -> global linear index (x-fastest: I = x + y*nx + z*nx*ny).

Definition at line 89 of file block_decomposer.hpp.

multiGlobal()

template<int Dim>

IVec< Dim > peclet::core::decomp::BlockDecomposer< Dim >::multiGlobal ( Index  lin ) const

inline

Global linear index -> global multi-index (inverse of linearGlobal).

Definition at line 99 of file block_decomposer.hpp.

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

• block_decomposer.hpp