Chaste Release::3.1
DistributedVectorFactory Class Reference

#include <DistributedVectorFactory.hpp>

Collaboration diagram for DistributedVectorFactory:

List of all members.

Public Member Functions

 DistributedVectorFactory (Vec vec)
 DistributedVectorFactory (unsigned size, PetscInt local=PETSC_DECIDE)
 DistributedVectorFactory (DistributedVectorFactory *pOriginalFactory)
 DistributedVectorFactory (unsigned lo, unsigned hi, unsigned size, unsigned numProcs=PetscTools::GetNumProcs())
 ~DistributedVectorFactory ()
Vec CreateVec ()
Vec CreateVec (unsigned stride)
DistributedVector CreateDistributedVector (Vec vec)
bool IsGlobalIndexLocal (unsigned globalIndex)
unsigned GetLocalOwnership () const
unsigned GetHigh () const
unsigned GetLow () const
unsigned GetProblemSize () const
unsigned GetNumProcs () const
DistributedVectorFactoryGetOriginalFactory ()
void SetOriginalFactory (DistributedVectorFactory *pOriginalFactory)
void SetFromFactory (DistributedVectorFactory *pFactory)
std::vector< unsigned > & rGetGlobalLows ()

Static Public Member Functions

static void SetCheckNumberOfProcessesOnLoad (bool checkNumberOfProcessesOnLoad=true)
static bool CheckNumberOfProcessesOnLoad ()

Private Member Functions

void CheckForPetsc ()
void CalculateOwnership (Vec vec)
template<class Archive >
void serialize (Archive &archive, const unsigned int version)

Private Attributes

unsigned mLo
unsigned mHi
unsigned mProblemSize
unsigned mNumProcs
bool mPetscStatusKnown
std::vector< unsignedmGlobalLows
DistributedVectorFactorympOriginalFactory

Static Private Attributes

static bool msCheckNumberOfProcessesOnLoad = true

Friends

class boost::serialization::access

Detailed Description

Factory for creating PETSc vectors distributed across processes.

Replacement for the vector creation portions of DistributedVector (which was implemented using static methods and data), the factory class allows several patterns of PETSc vector length (and distributions among processes) to co-exist.

All vectors created by a factory instance will have the same base size and parallelisation pattern.

Definition at line 57 of file DistributedVectorFactory.hpp.


Constructor & Destructor Documentation

DistributedVectorFactory::DistributedVectorFactory ( Vec  vec)

Set the problem with an existing PETSc vector -- must have stride=1.

Parameters:
vecis a PETSc vector which we want to use as the pattern for future vectors produced by this factory

Definition at line 81 of file DistributedVectorFactory.cpp.

References CalculateOwnership().

DistributedVectorFactory::DistributedVectorFactory ( unsigned  size,
PetscInt  local = PETSC_DECIDE 
)

Set the problem size specifying distribution over local processor.

Parameters:
sizethe problem size
localdefaults to PETSc's default

Definition at line 88 of file DistributedVectorFactory.cpp.

References CalculateOwnership(), CheckForPetsc(), CreateVec(), and PetscTools::Destroy().

DistributedVectorFactory::DistributedVectorFactory ( DistributedVectorFactory pOriginalFactory)

Constructor for use in archiving. Note that this constructor is only called when the number of processes is different from the original. Therefore, the orignal local node ownership cannot be used, and a new even partition will be applied.

Parameters:
pOriginalFactorysee mpOriginalFactory

Definition at line 100 of file DistributedVectorFactory.cpp.

References CalculateOwnership(), CreateVec(), PetscTools::Destroy(), GetProblemSize(), and mpOriginalFactory.

DistributedVectorFactory::DistributedVectorFactory ( unsigned  lo,
unsigned  hi,
unsigned  size,
unsigned  numProcs = PetscTools::GetNumProcs() 
)

Constructor intended for use in archiving. Allows complete manual specification of the factory.

Parameters:
lofirst index owned by this process
hione beyond last index owned by this process
sizetotal size of vectors
numProcsthe number of processes expected (defaults to the current number)

Definition at line 116 of file DistributedVectorFactory.cpp.

References CheckForPetsc().

DistributedVectorFactory::~DistributedVectorFactory ( )

Destructor deletes mpOriginalFactory if it exists.

Definition at line 129 of file DistributedVectorFactory.cpp.

References mpOriginalFactory.


Member Function Documentation

void DistributedVectorFactory::CalculateOwnership ( Vec  vec) [private]

Helper method for the constructors.

Parameters:
vecthe sample PETSc vector from which to calculate ownerships

Definition at line 44 of file DistributedVectorFactory.cpp.

References CheckForPetsc(), GetNumProcs(), mGlobalLows, mHi, mLo, mNumProcs, mPetscStatusKnown, and mProblemSize.

Referenced by DistributedVectorFactory().

void DistributedVectorFactory::CheckForPetsc ( ) [private]

Double check (in debug code) that PETSc has been initialised properly.

Definition at line 134 of file DistributedVectorFactory.cpp.

References mPetscStatusKnown.

Referenced by CalculateOwnership(), and DistributedVectorFactory().

static bool DistributedVectorFactory::CheckNumberOfProcessesOnLoad ( ) [inline, static]

Determine whether, when loading an instance from an archive, to check that the current number of processes matches that used in creating the archive.

Definition at line 244 of file DistributedVectorFactory.hpp.

References msCheckNumberOfProcessesOnLoad.

Vec DistributedVectorFactory::CreateVec ( unsigned  stride)

Create a striped PETSc vector of size: stride * problem size.

Parameters:
stride

Definition at line 160 of file DistributedVectorFactory.cpp.

References mHi, mLo, and mProblemSize.

DistributedVectorFactory* DistributedVectorFactory::GetOriginalFactory ( ) [inline]

If msCheckNumberOfProcessesOnLoad is not set, and this factory was loaded from an archive, then return a factory with the settings from the archive, which may not be the same as ours - if running on a different number of processes from the original, we will have used PETSC_DECIDE to set the local ownership on load.

Definition at line 255 of file DistributedVectorFactory.hpp.

References mpOriginalFactory.

Referenced by AbstractTetrahedralMesh< SPACE_DIM, SPACE_DIM >::load(), and CardiacSimulationArchiver< PROBLEM_CLASS >::Migrate().

bool DistributedVectorFactory::IsGlobalIndexLocal ( unsigned  globalIndex)

Test if the given global index is owned by the current process, i.e. is local to it.

Parameters:
globalIndexa global index

Definition at line 149 of file DistributedVectorFactory.cpp.

References mHi, and mLo.

Referenced by AbstractCardiacTissue< SPACE_DIM >::LoadCardiacCells().

std::vector< unsigned > & DistributedVectorFactory::rGetGlobalLows ( )
Returns:
the mLo value from each process in a vector. This is calculated on the first call and cached for later use.

Definition at line 173 of file DistributedVectorFactory.cpp.

References PetscTools::GetNumProcs(), GetNumProcs(), mGlobalLows, and mLo.

template<class Archive >
void DistributedVectorFactory::serialize ( Archive &  archive,
const unsigned int  version 
) [inline, private]

Archive the member variables.

Parameters:
archivethe archive
versionthe current version of this class

Definition at line 115 of file DistributedVectorFactory.hpp.

static void DistributedVectorFactory::SetCheckNumberOfProcessesOnLoad ( bool  checkNumberOfProcessesOnLoad = true) [inline, static]

Set whether, when loading an instance from an archive, to check that the current number of processes matches that used in creating the archive.

Parameters:
checkNumberOfProcessesOnLoad

Definition at line 235 of file DistributedVectorFactory.hpp.

References msCheckNumberOfProcessesOnLoad.

Referenced by CardiacSimulationArchiver< PROBLEM_CLASS >::Migrate().

void DistributedVectorFactory::SetFromFactory ( DistributedVectorFactory pFactory)

Set mLo and mHi from another vector factory. Used by archiving.

Parameters:
pFactorythe factory to set from.

Definition at line 66 of file DistributedVectorFactory.cpp.

References EXCEPTION, GetHigh(), GetLow(), GetNumProcs(), GetProblemSize(), mGlobalLows, mHi, mLo, mNumProcs, and mProblemSize.

Referenced by AbstractTetrahedralMesh< SPACE_DIM, SPACE_DIM >::load().

void DistributedVectorFactory::SetOriginalFactory ( DistributedVectorFactory pOriginalFactory) [inline]

Set method for mpOriginalFactory, used by archiving (load_construct_data).

Parameters:
pOriginalFactorysee mpOriginalFactory

Definition at line 264 of file DistributedVectorFactory.hpp.

References mpOriginalFactory.


Friends And Related Function Documentation

friend class boost::serialization::access [friend]

Needed for serialization.

Definition at line 106 of file DistributedVectorFactory.hpp.


Member Data Documentation

A cached vector of mLo values from each process.

Definition at line 79 of file DistributedVectorFactory.hpp.

Referenced by CalculateOwnership(), rGetGlobalLows(), and SetFromFactory().

One above the last entry owned by the current processor.

Definition at line 67 of file DistributedVectorFactory.hpp.

Referenced by CalculateOwnership(), CreateVec(), GetHigh(), GetLocalOwnership(), IsGlobalIndexLocal(), and SetFromFactory().

The first entry owned by the current processor.

Definition at line 64 of file DistributedVectorFactory.hpp.

Referenced by CalculateOwnership(), CreateVec(), GetLocalOwnership(), GetLow(), IsGlobalIndexLocal(), rGetGlobalLows(), and SetFromFactory().

How many processes this factory is expecting.

Definition at line 73 of file DistributedVectorFactory.hpp.

Referenced by CalculateOwnership(), GetNumProcs(), and SetFromFactory().

Whether we've checked that PETSc is initialised.

Definition at line 76 of file DistributedVectorFactory.hpp.

Referenced by CalculateOwnership(), and CheckForPetsc().

If this instance was loaded from an archive, this points to a factory with the settings from the archive, which may not be the same as this instance.

Definition at line 91 of file DistributedVectorFactory.hpp.

Referenced by DistributedVectorFactory(), GetOriginalFactory(), SetOriginalFactory(), and ~DistributedVectorFactory().

The problem size, i.e. the number of nodes in the mesh (the number of unknowns may be larger in a Stripe).

Definition at line 70 of file DistributedVectorFactory.hpp.

Referenced by CalculateOwnership(), CreateVec(), GetProblemSize(), and SetFromFactory().

Whether, when loading an instance from an archive, to check that the current number of processes matches that used in creating the archive.

Definition at line 85 of file DistributedVectorFactory.hpp.

Referenced by CheckNumberOfProcessesOnLoad(), and SetCheckNumberOfProcessesOnLoad().


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