LibGeoDecomp::PartitionManager< TOPOLOGY > Class Template Reference

#include <partitionmanager.h>

Collaboration diagram for LibGeoDecomp::PartitionManager< TOPOLOGY >:

List of all members.

Public Types
enum	AccessCode { OUTGROUP = -1 }
typedef TOPOLOGY	Topology
typedef std::map< int, std::vector< Region< DIM > > >	RegionVecMap
Public Member Functions
	PartitionManager (const CoordBox< DIM > &simulationArea=CoordBox< DIM >())
void	resetRegions (const CoordBox< DIM > &newSimulationArea, boost::shared_ptr< Partition< DIM > > newPartition, unsigned newRank, unsigned newGhostZoneWidth)
	resets the domain decomposition.
void	resetGhostZones (const std::vector< CoordBox< DIM > > &newBoundingBoxes)
RegionVecMap &	getOuterGhostZoneFragments ()
RegionVecMap &	getInnerGhostZoneFragments ()
const Region< DIM > &	getInnerOutgroupGhostZoneFragment ()
const Region< DIM > &	getOuterOutgroupGhostZoneFragment ()
const Region< DIM > &	getRegion (int node, unsigned expansionWidth)
const Region< DIM > &	ownRegion (unsigned expansionWidth=0)
const Region< DIM > &	ownExpandedRegion ()
const Region< DIM > &	rim (unsigned dist)
	Rim describes the node's inner ghost zone and those surrounding coordinates required to update those.
const Region< DIM > &	innerSet (unsigned dist)
	inner set refers to that part of a node's domain which are required to update the kernel.
const std::vector< CoordBox < DIM > > &	getBoundingBoxes () const
unsigned	getGhostZoneWidth () const
const Region< DIM > &	getOuterRim () const
	outer rim is the union of all outer ghost zone fragments.
const Region< DIM > &	getVolatileKernel () const
	The volatile kernel is the part of the kernel which may be overwritten while updating the inner ghost zone.
const Region< DIM > &	getInnerRim () const
	The inner rim is the part of the kernel which is required for updating the own rims.
const std::vector< std::size_t > &	getWeights () const
Static Public Attributes
static const int	DIM = Topology::DIM
Private Member Functions
void	fillRegion (unsigned node)
void	fillOwnRegion ()
void	intersect (unsigned node)
Private Attributes
boost::shared_ptr< Partition < DIM > >	partition
CoordBox< DIM >	simulationArea
Region< DIM >	outerRim
Region< DIM >	volatileKernel
Region< DIM >	innerRim
RegionVecMap	regions
RegionVecMap	outerGhostZoneFragments
RegionVecMap	innerGhostZoneFragments
std::vector< Region< DIM > >	ownRims
std::vector< Region< DIM > >	ownInnerSets
unsigned	rank
unsigned	ghostZoneWidth
std::vector< CoordBox< DIM > >	boundingBoxes
Friends
class	PartitionManagerTest
class	HiParSimulator::VanillaStepperTest

template<typename TOPOLOGY>
class LibGeoDecomp::PartitionManager< TOPOLOGY >

---

Member Typedef Documentation

template<typename TOPOLOGY>

typedef std::map<int, std::vector<Region<DIM> > > LibGeoDecomp::PartitionManager< TOPOLOGY >::RegionVecMap

template<typename TOPOLOGY>

typedef TOPOLOGY LibGeoDecomp::PartitionManager< TOPOLOGY >::Topology

---

Member Enumeration Documentation

template<typename TOPOLOGY>

enum LibGeoDecomp::PartitionManager::AccessCode

Enumerator:

OUTGROUP

---

Constructor & Destructor Documentation

template<typename TOPOLOGY>

LibGeoDecomp::PartitionManager< TOPOLOGY >::PartitionManager

(

const CoordBox< DIM > &

simulationArea = CoordBox<DIM>()

)

[inline, explicit]

---

Member Function Documentation

template<typename TOPOLOGY>

void LibGeoDecomp::PartitionManager< TOPOLOGY >::fillOwnRegion

(

)

[inline, private]

template<typename TOPOLOGY>

void LibGeoDecomp::PartitionManager< TOPOLOGY >::fillRegion

(

unsigned

node

)

[inline, private]

template<typename TOPOLOGY>

const std::vector<CoordBox<DIM> >& LibGeoDecomp::PartitionManager< TOPOLOGY >::getBoundingBoxes

(

)

const [inline]

template<typename TOPOLOGY>

unsigned LibGeoDecomp::PartitionManager< TOPOLOGY >::getGhostZoneWidth

(

)

const [inline]

Referenced by LibGeoDecomp::PartitionManager< Topology >::fillRegion().

template<typename TOPOLOGY>

RegionVecMap& LibGeoDecomp::PartitionManager< TOPOLOGY >::getInnerGhostZoneFragments

(

)

[inline]

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::getInnerOutgroupGhostZoneFragment

(

)

[inline]

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::getInnerRim

(

)

const [inline]

The inner rim is the part of the kernel which is required for updating the own rims.

Its similar to the outer ghost zone, but to the inner side. It usually includes just one stencil diameter more cells than the volatile kernel.

template<typename TOPOLOGY>

RegionVecMap& LibGeoDecomp::PartitionManager< TOPOLOGY >::getOuterGhostZoneFragments

(

)

[inline]

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::getOuterOutgroupGhostZoneFragment

(

)

[inline]

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::getOuterRim

(

)

const [inline]

outer rim is the union of all outer ghost zone fragments.

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::getRegion	(	int	node,
		unsigned	expansionWidth
	)			[inline]

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::getVolatileKernel

(

)

const [inline]

The volatile kernel is the part of the kernel which may be overwritten while updating the inner ghost zone.

template<typename TOPOLOGY>

const std::vector<std::size_t>& LibGeoDecomp::PartitionManager< TOPOLOGY >::getWeights

(

)

const [inline]

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::innerSet

(

unsigned

dist

)

[inline]

inner set refers to that part of a node's domain which are required to update the kernel.

template<typename TOPOLOGY>

void LibGeoDecomp::PartitionManager< TOPOLOGY >::intersect

(

unsigned

node

)

[inline, private]

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::ownExpandedRegion

(

)

[inline]

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::ownRegion

(

unsigned

expansionWidth = 0

)

[inline]

template<typename TOPOLOGY>

void LibGeoDecomp::PartitionManager< TOPOLOGY >::resetGhostZones

(

const std::vector< CoordBox< DIM > > &

newBoundingBoxes

)

[inline]

template<typename TOPOLOGY>

void LibGeoDecomp::PartitionManager< TOPOLOGY >::resetRegions	(	const CoordBox< DIM > &	newSimulationArea,
		boost::shared_ptr< Partition< DIM > >	newPartition,
		unsigned	newRank,
		unsigned	newGhostZoneWidth
	)			[inline]

resets the domain decomposition.

The simulation space is described by newSimulationArea, the decomposition scheme by newPartition. newRank will usually correspond to the MPI rank and identifies the current process. newGhostZoneWidth specifies after how many steps the halo should be synchronized. Higher values mean that the halo will be wider, which requires fewer synchronizations, but the syncs need to communicate more data. This is primarily to combat high latency datapaths (e.g. network latency or if the data needs to go to remote accelerators).

template<typename TOPOLOGY>

const Region<DIM>& LibGeoDecomp::PartitionManager< TOPOLOGY >::rim

(

unsigned

dist

)

[inline]

Rim describes the node's inner ghost zone and those surrounding coordinates required to update those.

---

Friends And Related Function Documentation

template<typename TOPOLOGY>

friend class HiParSimulator::VanillaStepperTest [friend]

template<typename TOPOLOGY>

friend class PartitionManagerTest [friend]

---

Member Data Documentation

template<typename TOPOLOGY>

std::vector<CoordBox<DIM> > LibGeoDecomp::PartitionManager< TOPOLOGY >::boundingBoxes [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::getGhostZoneWidth().

template<typename TOPOLOGY>

const int LibGeoDecomp::PartitionManager< TOPOLOGY >::DIM = Topology::DIM [static]

template<typename TOPOLOGY>

unsigned LibGeoDecomp::PartitionManager< TOPOLOGY >::ghostZoneWidth [private]

template<typename TOPOLOGY>

RegionVecMap LibGeoDecomp::PartitionManager< TOPOLOGY >::innerGhostZoneFragments [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::getInnerOutgroupGhostZoneFragment(), and LibGeoDecomp::PartitionManager< Topology >::getOuterOutgroupGhostZoneFragment().

template<typename TOPOLOGY>

Region<DIM> LibGeoDecomp::PartitionManager< TOPOLOGY >::innerRim [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::getWeights().

template<typename TOPOLOGY>

RegionVecMap LibGeoDecomp::PartitionManager< TOPOLOGY >::outerGhostZoneFragments [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::getInnerGhostZoneFragments(), and LibGeoDecomp::PartitionManager< Topology >::getRegion().

template<typename TOPOLOGY>

Region<DIM> LibGeoDecomp::PartitionManager< TOPOLOGY >::outerRim [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::getOuterRim().

template<typename TOPOLOGY>

std::vector<Region<DIM> > LibGeoDecomp::PartitionManager< TOPOLOGY >::ownInnerSets [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::getBoundingBoxes().

template<typename TOPOLOGY>

std::vector<Region<DIM> > LibGeoDecomp::PartitionManager< TOPOLOGY >::ownRims [private]

template<typename TOPOLOGY>

boost::shared_ptr<Partition<DIM> > LibGeoDecomp::PartitionManager< TOPOLOGY >::partition [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::fillRegion().

template<typename TOPOLOGY>

unsigned LibGeoDecomp::PartitionManager< TOPOLOGY >::rank [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::ownExpandedRegion().

template<typename TOPOLOGY>

RegionVecMap LibGeoDecomp::PartitionManager< TOPOLOGY >::regions [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::fillRegion(), and LibGeoDecomp::PartitionManager< Topology >::ownExpandedRegion().

template<typename TOPOLOGY>

CoordBox<DIM> LibGeoDecomp::PartitionManager< TOPOLOGY >::simulationArea [private]

Referenced by LibGeoDecomp::PartitionManager< Topology >::fillRegion().

template<typename TOPOLOGY>

Region<DIM> LibGeoDecomp::PartitionManager< TOPOLOGY >::volatileKernel [private]

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

• geometry/partitionmanager.h