Tpetra_Map_decl.hpp

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#ifndef TPETRA_MAP_DECL_HPP
#define TPETRA_MAP_DECL_HPP
 
 
#include "Tpetra_ConfigDefs.hpp"
#include "Tpetra_Map_fwd.hpp"
#include "Tpetra_Directory_fwd.hpp"
#include "Tpetra_TieBreak_fwd.hpp"
#include "Tpetra_Details_LocalMap.hpp"
#include "Kokkos_DefaultNode.hpp"
#include "Kokkos_DualView.hpp"
#include "Teuchos_Array.hpp"
#include "Teuchos_Comm.hpp"
#include "Teuchos_Describable.hpp"
 
 
namespace Tpetra {
 
  namespace Details {
 
    template<class OutMapType, class InMapType>
    struct MapCloner {
      typedef typename OutMapType::node_type out_node_type;
      typedef typename InMapType::node_type in_node_type;
 
      static OutMapType
      clone (const InMapType& mapIn,
             const Teuchos::RCP<out_node_type>& node2);
    };
 
  } // namespace Details
 
  template <class LocalOrdinal,
            class GlobalOrdinal,
            class Node>
  class Map : public Teuchos::Describable {
  public:
 
 
    using local_ordinal_type = LocalOrdinal;
 
    using global_ordinal_type = GlobalOrdinal;
 
    using device_type = typename Node::device_type;
 
    using execution_space = typename device_type::execution_space;
 
    using memory_space = typename device_type::memory_space;
 
    using node_type = Node;
 
    using local_map_type =
      ::Tpetra::Details::LocalMap<local_ordinal_type,
                                  global_ordinal_type,
                                  device_type>;
 
 
 
    Map (const global_size_t numGlobalElements,
         const global_ordinal_type indexBase,
         const Teuchos::RCP<const Teuchos::Comm<int> > &comm,
         const LocalGlobal lg=GloballyDistributed);
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
    TPETRA_DEPRECATED
    Map (const global_size_t numGlobalElements,
         const global_ordinal_type indexBase,
         const Teuchos::RCP<const Teuchos::Comm<int> > &comm,
         const LocalGlobal lg,
         const Teuchos::RCP<Node> &node);
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
    Map (const global_size_t numGlobalElements,
         const size_t numLocalElements,
         const global_ordinal_type indexBase,
         const Teuchos::RCP<const Teuchos::Comm<int> > &comm);
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
    TPETRA_DEPRECATED
    Map (const global_size_t numGlobalElements,
         const size_t numLocalElements,
         const global_ordinal_type indexBase,
         const Teuchos::RCP<const Teuchos::Comm<int> > &comm,
         const Teuchos::RCP<Node> &node);
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
    Map (const global_size_t numGlobalElements,
         const Kokkos::View<const GlobalOrdinal*, device_type>& indexList,
         const GlobalOrdinal indexBase,
         const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
    Map (const global_size_t numGlobalElements,
         const GlobalOrdinal indexList[],
         const LocalOrdinal indexListSize,
         const GlobalOrdinal indexBase,
         const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
    Map (const global_size_t numGlobalElements,
         const Teuchos::ArrayView<const GlobalOrdinal>& indexList,
         const GlobalOrdinal indexBase,
         const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
    TPETRA_DEPRECATED
    Map (const global_size_t numGlobalElements,
         const Teuchos::ArrayView<const GlobalOrdinal>& indexList,
         const GlobalOrdinal indexBase,
         const Teuchos::RCP<const Teuchos::Comm<int> >& comm,
         const Teuchos::RCP<Node>& node);
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
    Map ();
 
    Map (const Map<local_ordinal_type, global_ordinal_type, node_type>&) = default;
 
    Map (Map<local_ordinal_type, global_ordinal_type, node_type>&&) = default;
 
    Map&
    operator= (const Map<local_ordinal_type, global_ordinal_type, node_type>&) = default;
 
    Map&
    operator= (Map<local_ordinal_type, global_ordinal_type, node_type>&&) = default;
 
    virtual ~Map ();
 
 
 
    bool isOneToOne () const;
 
    global_size_t getGlobalNumElements () const {
      return numGlobalElements_;
    }
 
    size_t getNodeNumElements () const {
      return numLocalElements_;
    }
 
    GlobalOrdinal getIndexBase () const {
      return indexBase_;
    }
 
    LocalOrdinal getMinLocalIndex () const {
      return static_cast<LocalOrdinal> (0);
    }
 
    LocalOrdinal getMaxLocalIndex () const {
      if (this->getNodeNumElements () == 0) {
        return Tpetra::Details::OrdinalTraits<LocalOrdinal>::invalid ();
      } else { // Local indices are always zero-based.
        return static_cast<LocalOrdinal> (this->getNodeNumElements () - 1);
      }
    }
 
    GlobalOrdinal getMinGlobalIndex () const {
      return minMyGID_;
    }
 
    GlobalOrdinal getMaxGlobalIndex () const {
      return maxMyGID_;
    }
 
    GlobalOrdinal getMinAllGlobalIndex () const {
      return minAllGID_;
    }
 
    GlobalOrdinal getMaxAllGlobalIndex () const {
      return maxAllGID_;
    }
 
    LocalOrdinal getLocalElement (GlobalOrdinal globalIndex) const;
 
    GlobalOrdinal getGlobalElement (LocalOrdinal localIndex) const;
 
    local_map_type getLocalMap () const;
 
    LookupStatus
    getRemoteIndexList (const Teuchos::ArrayView<const GlobalOrdinal>& GIDList,
                        const Teuchos::ArrayView<                int>& nodeIDList,
                        const Teuchos::ArrayView<       LocalOrdinal>& LIDList) const;
 
    LookupStatus
    getRemoteIndexList (const Teuchos::ArrayView<const GlobalOrdinal> & GIDList,
                        const Teuchos::ArrayView<                int> & nodeIDList) const;
 
  private:
    typedef Kokkos::View<const GlobalOrdinal*,
                         Kokkos::LayoutLeft,
                         device_type> global_indices_array_type;
 
  public:
    global_indices_array_type getMyGlobalIndices () const;
 
    Teuchos::ArrayView<const GlobalOrdinal> getNodeElementList() const;
 
 
 
    bool isNodeLocalElement (LocalOrdinal localIndex) const;
 
    bool isNodeGlobalElement (GlobalOrdinal globalIndex) const;
 
    bool isUniform () const;
 
    bool isContiguous () const;
 
    bool isDistributed () const;
 
    bool isCompatible (const Map<LocalOrdinal,GlobalOrdinal,Node> &map) const;
 
    bool isSameAs (const Map<LocalOrdinal,GlobalOrdinal,Node> &map) const;
 
    bool locallySameAs (const Map<LocalOrdinal, GlobalOrdinal, node_type>& map) const;
 
    bool isLocallyFitted (const Map<LocalOrdinal, GlobalOrdinal, Node>& map) const;
 
 
 
    Teuchos::RCP<const Teuchos::Comm<int> > getComm () const;
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
    TPETRA_DEPRECATED Teuchos::RCP<Node> getNode () const;
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
 
 
    std::string description () const;
 
    void
    describe (Teuchos::FancyOStream &out,
              const Teuchos::EVerbosityLevel verbLevel =
                Teuchos::Describable::verbLevel_default) const;
 
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
    template <class NodeOut>
    Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, NodeOut> > TPETRA_DEPRECATED
    clone (const Teuchos::RCP<NodeOut>& nodeOut) const;
#endif
 
    Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> >
    removeEmptyProcesses () const;
 
    Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> >
    replaceCommWithSubset (const Teuchos::RCP<const Teuchos::Comm<int> >& newComm) const;
 
  protected:
    // This lets other specializations of Map access all of this
    // specialization's internal methods and data, so that we can
    // implement clone() without exposing the details of Map to users.
    template <class LO, class GO, class N> friend class Map;
 
  private:
    template<class OutMapType, class InMapType>
    friend struct Details::MapCloner;
 
    std::string
    localDescribeToString (const Teuchos::EVerbosityLevel vl) const;
 
    void setupDirectory () const;
 
    bool checkIsDist() const;
 
    global_size_t
    initialNonuniformDebugCheck (const global_size_t numGlobalElements,
                                 const size_t numLocalElements,
                                 const GlobalOrdinal indexBase,
                                 const Teuchos::RCP<const Teuchos::Comm<int> >& comm) const;
 
    void
    initWithNonownedHostIndexList (const global_size_t numGlobalElements,
                                   const Kokkos::View<const GlobalOrdinal*,
                                     Kokkos::LayoutLeft,
                                     Kokkos::HostSpace,
                                     Kokkos::MemoryUnmanaged>& entryList,
                                   const GlobalOrdinal indexBase,
                                   const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
    Teuchos::RCP<const Teuchos::Comm<int> > comm_;
 
    GlobalOrdinal indexBase_;
 
    global_size_t numGlobalElements_;
 
    size_t numLocalElements_;
 
    GlobalOrdinal minMyGID_;
 
    GlobalOrdinal maxMyGID_;
 
    GlobalOrdinal minAllGID_;
 
    GlobalOrdinal maxAllGID_;
 
    GlobalOrdinal firstContiguousGID_;
 
    GlobalOrdinal lastContiguousGID_;
 
    bool uniform_;
 
    bool contiguous_;
 
    bool distributed_;
 
    mutable Kokkos::View<const GlobalOrdinal*,
                         Kokkos::LayoutLeft,
                         device_type> lgMap_;
 
#ifndef SWIG
    mutable Kokkos::View<const GlobalOrdinal*,
                         Kokkos::LayoutLeft,
                         Kokkos::HostSpace> lgMapHost_;
#endif
 
    typedef ::Tpetra::Details::FixedHashTable<GlobalOrdinal, LocalOrdinal, device_type>
      global_to_local_table_type;
 
    global_to_local_table_type glMap_;
 
    mutable Teuchos::RCP<Directory<LocalOrdinal,GlobalOrdinal,Node> > directory_;
 
  }; // Map class
 
  template <class LocalOrdinal, class GlobalOrdinal>
  Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal> >
  createLocalMap (const size_t numElements,
                  const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createLocalMapWithNode (const size_t numElements,
                          const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  TPETRA_DEPRECATED
  Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createLocalMapWithNode (const size_t numElements,
                          const Teuchos::RCP<const Teuchos::Comm<int> >& comm,
                          const Teuchos::RCP<Node>& node);
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
  template <class LocalOrdinal, class GlobalOrdinal>
  Teuchos::RCP< const Map<LocalOrdinal,GlobalOrdinal> >
  createUniformContigMap (const global_size_t numElements,
                          const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createUniformContigMapWithNode (const global_size_t numElements,
                                  const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  TPETRA_DEPRECATED
  Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createUniformContigMapWithNode (const global_size_t numElements,
                                  const Teuchos::RCP<const Teuchos::Comm<int> >& comm,
                                  const Teuchos::RCP<Node>& node);
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
  template <class LocalOrdinal, class GlobalOrdinal>
  Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal> >
  createContigMap (const global_size_t numElements,
                   const size_t localNumElements,
                   const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createContigMapWithNode (const global_size_t numElements,
                           const size_t localNumElements,
                           const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  TPETRA_DEPRECATED
  Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createContigMapWithNode (const global_size_t numElements,
                           const size_t localNumElements,
                           const Teuchos::RCP<const Teuchos::Comm<int> >& comm,
                           const Teuchos::RCP<Node>& node);
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
  template <class LocalOrdinal, class GlobalOrdinal>
  Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal> >
  createNonContigMap (const Teuchos::ArrayView<const GlobalOrdinal>& elementList,
                      const Teuchos::RCP<const Teuchos::Comm<int> >& comm);
 
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  Teuchos::RCP< const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createNonContigMapWithNode (const Teuchos::ArrayView<const GlobalOrdinal> &elementList,
                              const Teuchos::RCP<const Teuchos::Comm<int> > &comm);
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  TPETRA_DEPRECATED
  Teuchos::RCP< const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createNonContigMapWithNode (const Teuchos::ArrayView<const GlobalOrdinal> &elementList,
                              const Teuchos::RCP<const Teuchos::Comm<int> > &comm,
                              const Teuchos::RCP<Node>& node);
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  TPETRA_DEPRECATED
  Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> >
  createWeightedContigMapWithNode (const int thisNodeWeight,
                                   const global_size_t numElements,
                                   const Teuchos::RCP<const Teuchos::Comm<int> > &comm,
                                   const Teuchos::RCP<Node>& node = Teuchos::null);
#endif // TPETRA_ENABLE_DEPRECATED_CODE
 
  template<class LocalOrdinal, class GlobalOrdinal, class Node>
  Teuchos::RCP< const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createOneToOne (const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& M);
 
  template<class LocalOrdinal, class GlobalOrdinal, class Node>
  Teuchos::RCP< const Map<LocalOrdinal,GlobalOrdinal,Node> >
  createOneToOne(const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> > &M,
                 const ::Tpetra::Details::TieBreak<LocalOrdinal,GlobalOrdinal> & tie_break);
 
} // namespace Tpetra
 
#include "Tpetra_Directory_decl.hpp"
 
namespace Tpetra {
  namespace Details {
 
    template<class OutMapType, class InMapType>
    OutMapType TPETRA_DEPRECATED
    MapCloner<OutMapType, InMapType>::
    clone (const InMapType& mapIn,
           const Teuchos::RCP<out_node_type>& /* nodeOut */)
    {
      static_assert (std::is_same<typename OutMapType::local_ordinal_type,
                                  typename InMapType::local_ordinal_type>::value,
                     "Tpetra::Map clone: The LocalOrdinal template parameter "
                     "of the input and output Map types must be the same.");
      static_assert (std::is_same<typename OutMapType::global_ordinal_type,
                                  typename InMapType::global_ordinal_type>::value,
                     "Tpetra::Map clone: The GlobalOrdinal template parameter "
                     "of the input and output Map types must be the same.");
      typedef typename OutMapType::local_ordinal_type LO;
      typedef typename OutMapType::global_ordinal_type GO;
      typedef ::Tpetra::Directory<LO, GO,
                                  typename OutMapType::node_type> out_dir_type;
      typedef typename OutMapType::global_to_local_table_type out_table_type;
      typedef typename OutMapType::device_type out_device_type;
 
      OutMapType mapOut; // Make an empty Map.
 
      // Fill the new Map with (possibly) shallow copies of all of the
      // original Map's data.  This is safe because Map is immutable,
      // so users can't change the original Map.
      mapOut.comm_              = mapIn.comm_;
      mapOut.indexBase_         = mapIn.indexBase_;
      mapOut.numGlobalElements_ = mapIn.numGlobalElements_;
      mapOut.numLocalElements_  = mapIn.numLocalElements_;
      mapOut.minMyGID_          = mapIn.minMyGID_;
      mapOut.maxMyGID_          = mapIn.maxMyGID_;
      mapOut.minAllGID_         = mapIn.minAllGID_;
      mapOut.maxAllGID_         = mapIn.maxAllGID_;
      mapOut.firstContiguousGID_= mapIn.firstContiguousGID_;
      mapOut.lastContiguousGID_ = mapIn.lastContiguousGID_;
      mapOut.uniform_           = mapIn.uniform_;
      mapOut.contiguous_        = mapIn.contiguous_;
      mapOut.distributed_       = mapIn.distributed_;
      {
        // mfh 25 Dec 2015, 11 Jan 2016: We really only need to make a
        // deep copy if the two Map types have different memory
        // spaces.  However, if you're calling clone(), it is likely
        // the case that the memory spaces differ, so it doesn't hurt
        // to make a deep copy here.
        Kokkos::View<GO*, Kokkos::LayoutLeft, out_device_type>
          lgMapOut ("lgMap", mapIn.lgMap_.extent (0));
        Kokkos::deep_copy (lgMapOut, mapIn.lgMap_);
        mapOut.lgMap_ = lgMapOut; // cast to const
 
        // mfh 11 Apr 2016: We can't just assign mapIn.lgMapHost_ to
        // mapOut.lgMapHost_ either.  This is because the memory space
        // of the host mirror of a CudaUVMSpace View is also
        // CudaUVMSpace, but the memory space of the host mirror of a
        // HostSpace View is HostSpace.  We can't assign one View to
        // another View with a different memory space.
        //
        // What we _can_ do here, though, is avoid a deep_copy in case
        // we're not using CUDA, by exploiting host mirrors.
 
        // lgMapOut is nonconst, so use it here instead of mapOut.lgMap_.
        auto lgMapHostOut =
          Kokkos::create_mirror_view (Kokkos::HostSpace (), lgMapOut);
        Kokkos::deep_copy (lgMapHostOut, lgMapOut);
        mapOut.lgMapHost_ = lgMapHostOut;
      }
      // This makes a deep copy only if necessary.  We could have
      // defined operator= to do this, but that would violate
      // expectations.  (Kokkos::View::operator= only does a shallow
      // copy, EVER.)
      mapOut.glMap_ = out_table_type (mapIn.glMap_);
 
      // We could cleverly clone the Directory here if it is
      // initialized, but there is no harm in simply creating it
      // uninitialized.
      mapOut.directory_ = Teuchos::rcp (new out_dir_type ());
 
      return mapOut;
    }
  } // namespace Details
 
 
#ifdef TPETRA_ENABLE_DEPRECATED_CODE
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  template <class NodeOut>
  Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, NodeOut> > TPETRA_DEPRECATED
  Map<LocalOrdinal,GlobalOrdinal,Node>::
  clone (const Teuchos::RCP<NodeOut>& nodeOut) const
  {
    typedef Map<LocalOrdinal, GlobalOrdinal, Node> in_map_type;
    typedef Map<LocalOrdinal, GlobalOrdinal, NodeOut> out_map_type;
    typedef Details::MapCloner<out_map_type, in_map_type> cloner_type;
    // Copy constructor does a shallow copy.
    return Teuchos::rcp (new out_map_type (cloner_type::clone (*this, nodeOut)));
  }
#endif
 
} // namespace Tpetra
 
template <class LocalOrdinal, class GlobalOrdinal, class Node>
bool operator== (const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> &map1,
                 const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> &map2)
{ return map1.isSameAs (map2); }
 
template <class LocalOrdinal, class GlobalOrdinal, class Node>
bool operator!= (const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> &map1,
                 const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> &map2)
{ return ! map1.isSameAs (map2); }
 
 
#endif // TPETRA_MAP_DECL_HPP