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Zoltan2::MeshAdapter< User > Class Template Referenceabstract

MeshAdapter defines the interface for mesh input. More...

#include <Zoltan2_MeshAdapter.hpp>

Inheritance diagram for Zoltan2::MeshAdapter< User >:
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Collaboration diagram for Zoltan2::MeshAdapter< User >:
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Public Member Functions

enum BaseAdapterType adapterType () const override
 Returns the type of adapter. More...
 
 MeshAdapter ()
 
virtual bool areEntityIDsUnique (MeshEntityType etype) const
 Provide a pointer to the entity topology types. More...
 
virtual size_t getLocalNumOf (MeshEntityType etype) const =0
 Returns the global number of mesh entities of MeshEntityType. More...
 
virtual void getIDsViewOf (MeshEntityType etype, gno_t const *&Ids) const =0
 Provide a pointer to this process' identifiers. More...
 
virtual void getTopologyViewOf (MeshEntityType etype, enum EntityTopologyType const *&Types) const
 Provide a pointer to the entity topology types. More...
 
virtual int getNumWeightsPerOf (MeshEntityType etype) const
 Return the number of weights per entity. More...
 
virtual void getWeightsViewOf (MeshEntityType etype, const scalar_t *&weights, int &stride, int idx=0) const
 Provide a pointer to one of the number of this process' optional entity weights. More...
 
virtual int getDimension () const
 Return dimension of the entity coordinates, if any. More...
 
virtual void getCoordinatesViewOf (MeshEntityType etype, const scalar_t *&coords, int &stride, int coordDim) const
 Provide a pointer to one dimension of entity coordinates. More...
 
virtual bool availAdjs (MeshEntityType source, MeshEntityType target) const
 Returns whether a first adjacency combination is available. More...
 
virtual size_t getLocalNumAdjs (MeshEntityType source, MeshEntityType target) const
 Returns the number of first adjacencies on this process. More...
 
virtual void getAdjsView (MeshEntityType source, MeshEntityType target, const offset_t *&offsets, const gno_t *&adjacencyIds) const
 Sets pointers to this process' mesh first adjacencies. More...
 
virtual bool avail2ndAdjs (MeshEntityType sourcetarget, MeshEntityType through) const
 Returns whether a second adjacency combination is available. If combination is not available in the MeshAdapter, Zoltan2 will compute them, using A^T A, where A is matrix of first adjacencies. More...
 
virtual size_t getLocalNum2ndAdjs (MeshEntityType sourcetarget, MeshEntityType through) const
 if avail2ndAdjs(), returns the number of second adjacencies on this process. More...
 
virtual void get2ndAdjsView (MeshEntityType sourcetarget, MeshEntityType through, const offset_t *&offsets, const gno_t *&adjacencyIds) const
 if avail2ndAdjs(), set pointers to this process' second adjacencies More...
 
virtual int getNumWeightsPer2ndAdj (MeshEntityType sourcetarget, MeshEntityType through) const
 Returns the number (0 or greater) of weights per second adjacency. Note: second-adjacency weights may be used only if avail2ndAdjs(). More...
 
virtual void get2ndAdjWeightsView (MeshEntityType sourcetarget, MeshEntityType through, const scalar_t *&weights, int &stride, int idx) const
 Provide a pointer to the second adjacency weights, if any. Note: second-adjacency weights may be used only if avail2ndAdjs(). More...
 
enum MeshEntityType getPrimaryEntityType () const
 Returns the entity to be partitioned, ordered, colored, etc. More...
 
enum MeshEntityType getAdjacencyEntityType () const
 Returns the entity that describes adjacencies between the entities to be partitioned, ordered, colored, etc. That is, a primaryEntityType that contains an adjacencyEntityType are adjacent. More...
 
enum MeshEntityType getSecondAdjacencyEntityType () const
 Returns the entity that describes second adjacencies between the entities to be partitioned, ordered, colored, etc. That is, two primaryEntityType that share a secondAdjacencyEntityType are adjacent. More...
 
void setEntityTypes (std::string ptypestr, std::string atypestr, std::string satypestr)
 Sets the primary, adjacency, and second adjacency entity types. Called by algorithm based on parameter values in parameter list from application. Also sets primaryEntityType, adjacencyEntityType, and secondAdjacencyEntityType to something reasonable: primaryEntityType not adjacencyEntityType or secondAdjacencyEntityType. More...
 
virtual bool useDegreeAsWeightOf (MeshEntityType etype, int idx) const
 Optional method allowing the idx-th weight of entity type etype to be set as the number of neighbors (the degree) of the entity Default is false; user can change in his MeshAdapter implementation. More...
 
size_t getLocalNumIDs () const override
 Returns the number of objects on this process. More...
 
void getIDsView (const gno_t *&Ids) const override
 Provide a pointer to this process' identifiers. More...
 
void getIDsKokkosView (Kokkos::View< const gno_t *, typename node_t::device_type > &ids) const override
 
int getNumWeightsPerID () const override
 Returns the number of weights per object. Number of weights per object should be zero or greater. If zero, then it is assumed that all objects are equally weighted. Default is zero weights per ID. More...
 
void getWeightsView (const scalar_t *&wgt, int &stride, int idx=0) const override
 Provide pointer to a weight array with stride. More...
 
void getCoordinatesView (const scalar_t *&coords, int &stride, int coordDim) const override
 
void getCoordinatesKokkosView (Kokkos::View< scalar_t **, Kokkos::LayoutLeft, typename node_t::device_type > &elements) const override
 
bool useDegreeAsWeight (int idx) const
 
- Public Member Functions inherited from Zoltan2::AdapterWithCoords< User >
virtual void getCoordinatesKokkosView (CoordsDeviceView &elements) const =0
 
virtual void getCoordinatesHostView (CoordsHostView &) const
 
virtual void getCoordinatesDeviceView (CoordsDeviceView &elements) const
 
- Public Member Functions inherited from Zoltan2::BaseAdapter< User >
virtual void getIDsKokkosView (ConstIdsDeviceView &ids) const
 Provide a Kokkos view to this process' identifiers. More...
 
virtual void getIDsHostView (ConstIdsHostView &hostIds) const
 Provide a Kokkos view (Host side) to this process' identifiers. More...
 
virtual void getIDsDeviceView (ConstIdsDeviceView &deviceIds) const
 Provide a Kokkos view (Device side) to this process' identifiers. More...
 
virtual void getWeightsKokkosView (Kokkos::View< scalar_t **, device_t > &wgt) const
 Provide kokkos view of weights. More...
 
virtual void getWeightsHostView (WeightsHostView1D &hostWgts, int idx=0) const
 Provide a Kokkos view (Host side) of the weights. More...
 
virtual void getWeightsHostView (WeightsHostView &hostWgts) const
 Provide a Kokkos view (Host side) of the weights. More...
 
virtual void getWeightsDeviceView (WeightsDeviceView1D &deviceWgts, int idx=0) const
 Provide a Kokkos view (Device side) of the weights. More...
 
virtual void getWeightsDeviceView (WeightsDeviceView &deviceWgts) const
 Provide a Kokkos view (Device side) of the weights. More...
 
virtual void getPartsView (const part_t *&inputPart) const
 Provide pointer to an array containing the input part assignment for each ID. The input part information may be used for re-partitioning to reduce data movement, or for mapping parts to processes. Adapters may return NULL for this pointer (the default behavior); if NULL is returned, algorithms will assume the rank. More...
 
virtual void getPartsHostView (Kokkos::View< part_t *, host_t > &inputPart) const
 
virtual void getPartsDeviceView (Kokkos::View< part_t *, device_t > &inputPart) const
 
template<typename Adapter >
void applyPartitioningSolution (const User &in, User *&out, const PartitioningSolution< Adapter > &solution) const
 Apply a PartitioningSolution to an input. More...
 
- Public Member Functions inherited from Zoltan2::BaseAdapterRoot
virtual ~BaseAdapterRoot ()=default
 

Additional Inherited Members

- Public Types inherited from Zoltan2::AdapterWithCoords< User >
using scalar_t = typename BaseAdapter< User >::scalar_t
 
using device_t = typename BaseAdapter< User >::node_t::device_type
 
using host_t = typename Kokkos::HostSpace::memory_space
 
using CoordsDeviceView = Kokkos::View< scalar_t **, Kokkos::LayoutLeft, device_t >
 
using CoordsHostView = typename CoordsDeviceView::HostMirror
 
- Public Types inherited from Zoltan2::BaseAdapter< User >
using lno_t = typename InputTraits< User >::lno_t
 
using gno_t = typename InputTraits< User >::gno_t
 
using scalar_t = typename InputTraits< User >::scalar_t
 
using node_t = typename InputTraits< User >::node_t
 
using part_t = typename InputTraits< User >::part_t
 
using offset_t = typename InputTraits< User >::offset_t
 
using host_t = typename Kokkos::HostSpace::memory_space
 
using device_t = typename node_t::device_type
 
using ConstIdsDeviceView = Kokkos::View< const gno_t *, device_t >
 
using ConstIdsHostView = typename ConstIdsDeviceView::HostMirror
 
using IdsDeviceView = Kokkos::View< gno_t *, device_t >
 
using IdsHostView = typename IdsDeviceView::HostMirror
 
using ConstOffsetsDeviceView = Kokkos::View< const offset_t *, device_t >
 
using ConstOffsetsHostView = typename ConstOffsetsDeviceView::HostMirror
 
using OffsetsDeviceView = Kokkos::View< offset_t *, device_t >
 
using OffsetsHostView = typename OffsetsDeviceView::HostMirror
 
using ConstScalarsDeviceView = Kokkos::View< const scalar_t *, device_t >
 
using ConstScalarsHostView = typename ConstScalarsDeviceView::HostMirror
 
using ScalarsDeviceView = Kokkos::View< scalar_t *, device_t >
 
using ScalarsHostView = typename ScalarsDeviceView::HostMirror
 
using ConstWeightsDeviceView1D = Kokkos::View< const scalar_t *, device_t >
 
using ConstWeightsHostView1D = typename ConstWeightsDeviceView1D::HostMirror
 
using WeightsDeviceView1D = Kokkos::View< scalar_t *, device_t >
 
using WeightsHostView1D = typename WeightsDeviceView1D::HostMirror
 
using ConstWeightsDeviceView = Kokkos::View< const scalar_t **, device_t >
 
using ConstWeightsHostView = typename ConstWeightsDeviceView::HostMirror
 
using WeightsDeviceView = Kokkos::View< scalar_t **, device_t >
 
using WeightsHostView = typename WeightsDeviceView::HostMirror
 
- Protected Member Functions inherited from Zoltan2::BaseAdapter< User >
void generateWeightFileOnly (const char *fileprefix, const Teuchos::Comm< int > &comm) const
 

Detailed Description

template<typename User>
class Zoltan2::MeshAdapter< User >

MeshAdapter defines the interface for mesh input.

Adapter objects provide access for Zoltan2 to the user's data. Many built-in adapters are already defined for common data structures, such as Tpetra and Epetra objects and C-language pointers to arrays.

Data types:

The Kokkos node type can be safely ignored.

The template parameter User is a user-defined data type which, through a traits mechanism, provides the actual data types with which the Zoltan2 library will be compiled. User may be the actual class or structure used by application to represent a vector, or it may be the helper class BasicUserTypes. See InputTraits for more information.

The scalar_t type, representing use data such as matrix values, is used by Zoltan2 for weights, coordinates, part sizes and quality metrics. Some User types (like Tpetra::CrsMatrix) have an inherent scalar type, and some (like Tpetra::CrsGraph) do not. For such objects, the scalar type is set by Zoltan2 to float. If you wish to change it to double, set the second template parameter to double.

Definition at line 88 of file Zoltan2_MeshAdapter.hpp.

Constructor & Destructor Documentation

template<typename User>
Zoltan2::MeshAdapter< User >::MeshAdapter ( )
inline

Definition at line 107 of file Zoltan2_MeshAdapter.hpp.

Member Function Documentation

template<typename User>
enum BaseAdapterType Zoltan2::MeshAdapter< User >::adapterType ( ) const
inlineoverridevirtual

Returns the type of adapter.

Implements Zoltan2::BaseAdapter< User >.

Definition at line 103 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual bool Zoltan2::MeshAdapter< User >::areEntityIDsUnique ( MeshEntityType  etype) const
inlinevirtual

Provide a pointer to the entity topology types.

Parameters
Typeswill on return point to the list of entity topology types for this process.

Reimplemented in Zoltan2::PamgenMeshAdapter< User >.

Definition at line 118 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual size_t Zoltan2::MeshAdapter< User >::getLocalNumOf ( MeshEntityType  etype) const
pure virtual

Returns the global number of mesh entities of MeshEntityType.

Returns the number of mesh entities on this process.

Implemented in Zoltan2::PamgenMeshAdapter< User >.

template<typename User>
virtual void Zoltan2::MeshAdapter< User >::getIDsViewOf ( MeshEntityType  etype,
gno_t const *&  Ids 
) const
pure virtual

Provide a pointer to this process' identifiers.

Parameters
Idswill on return point to the list of the global Ids for this process.
template<typename User>
virtual void Zoltan2::MeshAdapter< User >::getTopologyViewOf ( MeshEntityType  etype,
enum EntityTopologyType const *&  Types 
) const
inlinevirtual

Provide a pointer to the entity topology types.

Parameters
Typeswill on return point to the list of entity topology types for this process.

Reimplemented in Zoltan2::PamgenMeshAdapter< User >.

Definition at line 144 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual int Zoltan2::MeshAdapter< User >::getNumWeightsPerOf ( MeshEntityType  etype) const
inlinevirtual

Return the number of weights per entity.

Returns
the count of weights, zero or more per entity. If the number of weights is zero, then we assume that the entities are equally weighted.

Definition at line 156 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual void Zoltan2::MeshAdapter< User >::getWeightsViewOf ( MeshEntityType  etype,
const scalar_t *&  weights,
int &  stride,
int  idx = 0 
) const
inlinevirtual

Provide a pointer to one of the number of this process' optional entity weights.

Parameters
weightson return will contain a list of the weights for the number specified.
strideon return will indicate the stride of the weights list.

The k'th weight is located at weights[stride*k].

Parameters
idxis a value ranging from zero to one less than getNumWeightsPerEntityID()

Definition at line 171 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual int Zoltan2::MeshAdapter< User >::getDimension ( ) const
inlinevirtual

Return dimension of the entity coordinates, if any.

Some algorithms can partition mesh entities using geometric coordinate information

Some algorithms can use geometric entity coordinate information if it is present.

Reimplemented in Zoltan2::PamgenMeshAdapter< User >.

Definition at line 188 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual void Zoltan2::MeshAdapter< User >::getCoordinatesViewOf ( MeshEntityType  etype,
const scalar_t *&  coords,
int &  stride,
int  coordDim 
) const
inlinevirtual

Provide a pointer to one dimension of entity coordinates.

Parameters
coordspoints to a list of coordinate values for the dimension.
stridedescribes the layout of the coordinate values in the coords list. If stride is one, then the ith coordinate value is coords[i], but if stride is two, then the ith coordinate value is coords[2*i].
coordDimis a value from 0 to one less than getEntityCoordinateDimension() specifying which dimension is being provided in the coords list.

Definition at line 200 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual bool Zoltan2::MeshAdapter< User >::availAdjs ( MeshEntityType  source,
MeshEntityType  target 
) const
inlinevirtual

Returns whether a first adjacency combination is available.

Reimplemented in Zoltan2::PamgenMeshAdapter< User >.

Definition at line 211 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual size_t Zoltan2::MeshAdapter< User >::getLocalNumAdjs ( MeshEntityType  source,
MeshEntityType  target 
) const
inlinevirtual

Returns the number of first adjacencies on this process.

Reimplemented in Zoltan2::PamgenMeshAdapter< User >.

Definition at line 218 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual void Zoltan2::MeshAdapter< User >::getAdjsView ( MeshEntityType  source,
MeshEntityType  target,
const offset_t *&  offsets,
const gno_t *&  adjacencyIds 
) const
inlinevirtual

Sets pointers to this process' mesh first adjacencies.

Parameters
source
offsetsis an array of size getLocalNumOf() + 1. The first adjacency Ids for Ids[i] (returned in getIDsViewOf()) begin at adjacencyIds[offsets[i]]. The last element of offsets is the size of the adjacencyIds array.
adjacencyIdson return will point to the global first adjacency Ids for each entity.

Definition at line 232 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual bool Zoltan2::MeshAdapter< User >::avail2ndAdjs ( MeshEntityType  sourcetarget,
MeshEntityType  through 
) const
inlinevirtual

Returns whether a second adjacency combination is available. If combination is not available in the MeshAdapter, Zoltan2 will compute them, using A^T A, where A is matrix of first adjacencies.

Reimplemented in Zoltan2::PamgenMeshAdapter< User >.

Definition at line 245 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual size_t Zoltan2::MeshAdapter< User >::getLocalNum2ndAdjs ( MeshEntityType  sourcetarget,
MeshEntityType  through 
) const
inlinevirtual

if avail2ndAdjs(), returns the number of second adjacencies on this process.

Reimplemented in Zoltan2::PamgenMeshAdapter< User >.

Definition at line 254 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual void Zoltan2::MeshAdapter< User >::get2ndAdjsView ( MeshEntityType  sourcetarget,
MeshEntityType  through,
const offset_t *&  offsets,
const gno_t *&  adjacencyIds 
) const
inlinevirtual

if avail2ndAdjs(), set pointers to this process' second adjacencies

Parameters
sourcetarget
offsetsis an array of size getLocalNumOf() + 1. The second adjacency Ids for Ids[i] (returned in getIDsViewOf()) begin at adjacencyIds[offsets[i]]. The last element of offsets is the size of the adjacencyIds array.
adjacencyIdson return will point to the global second adjacency Ids for each entity.

Definition at line 270 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual int Zoltan2::MeshAdapter< User >::getNumWeightsPer2ndAdj ( MeshEntityType  sourcetarget,
MeshEntityType  through 
) const
inlinevirtual

Returns the number (0 or greater) of weights per second adjacency. Note: second-adjacency weights may be used only if avail2ndAdjs().

Definition at line 283 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual void Zoltan2::MeshAdapter< User >::get2ndAdjWeightsView ( MeshEntityType  sourcetarget,
MeshEntityType  through,
const scalar_t *&  weights,
int &  stride,
int  idx 
) const
inlinevirtual

Provide a pointer to the second adjacency weights, if any. Note: second-adjacency weights may be used only if avail2ndAdjs().

Parameters
weightsis the list of weights of the given number for the second adjacencies returned in get2ndAdjsView().
strideThe k'th weight is located at weights[stride*k]
idxranges from zero to one less than getNumWeightsPer2ndAdj().

Definition at line 296 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
enum MeshEntityType Zoltan2::MeshAdapter< User >::getPrimaryEntityType ( ) const
inline

Returns the entity to be partitioned, ordered, colored, etc.

Definition at line 312 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
enum MeshEntityType Zoltan2::MeshAdapter< User >::getAdjacencyEntityType ( ) const
inline

Returns the entity that describes adjacencies between the entities to be partitioned, ordered, colored, etc. That is, a primaryEntityType that contains an adjacencyEntityType are adjacent.

Definition at line 321 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
enum MeshEntityType Zoltan2::MeshAdapter< User >::getSecondAdjacencyEntityType ( ) const
inline

Returns the entity that describes second adjacencies between the entities to be partitioned, ordered, colored, etc. That is, two primaryEntityType that share a secondAdjacencyEntityType are adjacent.

Definition at line 330 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
void Zoltan2::MeshAdapter< User >::setEntityTypes ( std::string  ptypestr,
std::string  atypestr,
std::string  satypestr 
)
inline

Sets the primary, adjacency, and second adjacency entity types. Called by algorithm based on parameter values in parameter list from application. Also sets primaryEntityType, adjacencyEntityType, and secondAdjacencyEntityType to something reasonable: primaryEntityType not adjacencyEntityType or secondAdjacencyEntityType.

Definition at line 340 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
virtual bool Zoltan2::MeshAdapter< User >::useDegreeAsWeightOf ( MeshEntityType  etype,
int  idx 
) const
inlinevirtual

Optional method allowing the idx-th weight of entity type etype to be set as the number of neighbors (the degree) of the entity Default is false; user can change in his MeshAdapter implementation.

Reimplemented in Zoltan2::PamgenMeshAdapter< User >.

Definition at line 406 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
size_t Zoltan2::MeshAdapter< User >::getLocalNumIDs ( ) const
inlineoverridevirtual

Returns the number of objects on this process.

Objects may be coordinates, graph vertices, matrix rows, etc. They are the objects to be partitioned, ordered, or colored.

Implements Zoltan2::BaseAdapterRoot.

Definition at line 413 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
void Zoltan2::MeshAdapter< User >::getIDsView ( const gno_t *&  ids) const
inlineoverridevirtual

Provide a pointer to this process' identifiers.

Deprecated:
Use getIDsHostView instead.
Parameters
idswill on return point to the list of the global Ids for this process.

Reimplemented from Zoltan2::BaseAdapter< User >.

Definition at line 417 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
void Zoltan2::MeshAdapter< User >::getIDsKokkosView ( Kokkos::View< const gno_t *, typename node_t::device_type > &  ids) const
inlineoverride

Definition at line 421 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
int Zoltan2::MeshAdapter< User >::getNumWeightsPerID ( ) const
inlineoverridevirtual

Returns the number of weights per object. Number of weights per object should be zero or greater. If zero, then it is assumed that all objects are equally weighted. Default is zero weights per ID.

Reimplemented from Zoltan2::BaseAdapterRoot.

Definition at line 437 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
void Zoltan2::MeshAdapter< User >::getWeightsView ( const scalar_t *&  wgt,
int &  stride,
int  idx = 0 
) const
inlineoverridevirtual

Provide pointer to a weight array with stride.

Parameters
wgton return a pointer to the weights for this idx
strideon return, the value such that the nth weight should be found at wgt[n*stride] .
idxthe weight index, zero or greater This function or getWeightsKokkosView must be implemented in derived adapter if getNumWeightsPerID > 0. This function should not be called if getNumWeightsPerID is zero.

Reimplemented from Zoltan2::BaseAdapter< User >.

Definition at line 441 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
void Zoltan2::MeshAdapter< User >::getCoordinatesView ( const scalar_t *&  coords,
int &  stride,
int  coordDim 
) const
inlineoverridevirtual

Implements Zoltan2::AdapterWithCoords< User >.

Definition at line 445 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
void Zoltan2::MeshAdapter< User >::getCoordinatesKokkosView ( Kokkos::View< scalar_t **, Kokkos::LayoutLeft, typename node_t::device_type > &  elements) const
inlineoverride

Definition at line 451 of file Zoltan2_MeshAdapter.hpp.

template<typename User>
bool Zoltan2::MeshAdapter< User >::useDegreeAsWeight ( int  idx) const
inline

Definition at line 471 of file Zoltan2_MeshAdapter.hpp.


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