Layout class for logical organisation of parallel nodes. More...

#include <layout.h>

Static Public Member Functions
static int	grid_rank (int rank, const int gcoord)
	find rank from grid coordinate. More...

static int	grid_coord (int *gcoord, const int rank)
	find grid coordinate corresponding to rank. More...

static int	grid_dims (int *gdims)
	find grid size. More...

static int	ipe (const int idir)
	grid coordinate along idir direction. More...

static int	npe (const int idir)
	grid size in idir direction. More...

static int	tag (int rank, int idir, int ipm)
	generate tag for communication. More...

static int	layout_setup ()
	initialise layout. More...

static int	layout_setup (const std::vector< int > &lattice_size, std::vector< int > &grid_size)
	initialise layout. More...

static int	layout_delete ()
	destroy layout and clean up. More...

static int	physical_map_setup ()

static int	physical_map_delete ()

static int	subgrid_setup ()

static int	subgrid_delete ()

Static Public Attributes
static int	m_ndim = 0
	number of dimensions. More...

static int *	m_dims = 0
	lattice extent (Lx, Ly, Lz, Lt) More...

static int *	m_grid_dims = 0
	grid dimensions in directions. More...

static int *	m_grid_coord = 0
	grid coordinate. More...

static int *	m_ipe_up = 0
	rank of upward neighbour in directions. More...

static int *	m_ipe_dn = 0
	rank of downward neighbour in directions. More...

static char	m_map_grid [16]

static int *	m_physical_to_logical = 0
	map between physical and logical grid More...

static MPI_Comm *	m_sub_comm = 0
	subgrid More...

Private Member Functions
	Layout ()
	constructor is hidden as private; no instantiation. More...

	Layout (const Layout &)
	copy constructor is hidden as private; no instantiation. More...

Layout &	operator= (const Layout &)
	assignment is hidden as private. More...

Detailed Description

Layout class for logical organisation of parallel nodes.

Layout class inside MPI communicator class describes logical organisation of parallel nodes. not intended for public use.

Definition at line 28 of file layout.h.

Constructor & Destructor Documentation

Communicator_impl::Layout::Layout ( )

inlineprivate

constructor is hidden as private; no instantiation.

Definition at line 70 of file layout.h.

Communicator_impl::Layout::Layout ( const Layout & )

inlineprivate

copy constructor is hidden as private; no instantiation.

Definition at line 71 of file layout.h.

Member Function Documentation

int Communicator_impl::Layout::grid_coord	(	int *	gcoord,
		const int	rank
	)

static

find grid coordinate corresponding to rank.

Definition at line 41 of file physical_map.cpp.

int Communicator_impl::Layout::grid_dims ( int * gdims )

static

find grid size.

Definition at line 57 of file layout.cpp.

int Communicator_impl::Layout::grid_rank	(	int *	rank,
		const int *	gcoord
	)

static

find rank from grid coordinate.

Definition at line 24 of file physical_map.cpp.

int Communicator_impl::Layout::ipe ( const int idir )

static

grid coordinate along idir direction.

Definition at line 43 of file layout.cpp.

int Communicator_impl::Layout::layout_delete ( )

static

destroy layout and clean up.

Definition at line 240 of file layout.cpp.

int Communicator_impl::Layout::layout_setup ( )

static

initialise layout.

layout_setup() – setup logical layout

layout_setup()

find dimension, global lattice size, local lattice size, grid division from CommonParameters. if grid division or local size is specified, check consistency. otherwise, try to divide so that global lattice size is divisable and the total number of rank is equal to number of processor elements.

N.B. the result should be stored back to communicator for further use from other components.

N.B. initial parameter settings are taken from CommonParameters; should rather be fetched from parameter file or something else?

Definition at line 93 of file layout.cpp.

int Communicator_impl::Layout::layout_setup	(	const std::vector< int > &	lattice_size,
		std::vector< int > &	grid_size
	)

static

initialise layout.

Definition at line 154 of file layout.cpp.

int Communicator_impl::Layout::npe ( const int idir )

static

grid size in idir direction.

Definition at line 50 of file layout.cpp.

Layout& Communicator_impl::Layout::operator= ( const Layout & )

private

assignment is hidden as private.

int Communicator_impl::Layout::physical_map_delete ( )

static

Definition at line 76 of file physical_map.cpp.

int Communicator_impl::Layout::physical_map_setup ( )

static

Definition at line 57 of file physical_map.cpp.

int Communicator_impl::Layout::subgrid_delete ( )

static

Definition at line 297 of file layout.cpp.

int Communicator_impl::Layout::subgrid_setup ( )

static

Definition at line 258 of file layout.cpp.

int Communicator_impl::Layout::tag	(	int	rank,
		int	idir,
		int	ipm
	)

static

generate tag for communication.

Definition at line 68 of file layout.cpp.

Member Data Documentation

int * Communicator_impl::Layout::m_dims = 0

static

lattice extent (Lx, Ly, Lz, Lt)

Definition at line 47 of file layout.h.

int * Communicator_impl::Layout::m_grid_coord = 0

static

grid coordinate.

Definition at line 51 of file layout.h.

int * Communicator_impl::Layout::m_grid_dims = 0

static

grid dimensions in directions.

Definition at line 50 of file layout.h.

int * Communicator_impl::Layout::m_ipe_dn = 0

static

rank of downward neighbour in directions.

Definition at line 54 of file layout.h.

int * Communicator_impl::Layout::m_ipe_up = 0

static

rank of upward neighbour in directions.

Definition at line 53 of file layout.h.

char Communicator_impl::Layout::m_map_grid

static

Definition at line 57 of file layout.h.

int Communicator_impl::Layout::m_ndim = 0

static

number of dimensions.

Definition at line 46 of file layout.h.

int * Communicator_impl::Layout::m_physical_to_logical = 0

static

map between physical and logical grid

Definition at line 58 of file layout.h.

MPI_Comm * Communicator_impl::Layout::m_sub_comm = 0

static

subgrid

Definition at line 64 of file layout.h.

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

src/lib/Communicator/MPI/layout.h
src/lib/Communicator/MPI/layout.cpp
src/lib/Communicator/MPI/physical_map.cpp

Static Public Member Functions

Static Public Attributes

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation