MueLu_AggregationStructuredAlgorithm_kokkos_decl.hpp

Go to the documentation of this file.

// @HEADER
//
// ***********************************************************************
//
//        MueLu: A package for multigrid based preconditioning
//                  Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact
//                    Jonathan Hu       (jhu@sandia.gov)
//                    Andrey Prokopenko (aprokop@sandia.gov)
//                    Ray Tuminaro      (rstumin@sandia.gov)
//
// ***********************************************************************
//
// @HEADER
#ifndef MUELU_AGGREGATIONSTRUCTUREDALGORITHM_KOKKOS_DECL_HPP
#define MUELU_AGGREGATIONSTRUCTUREDALGORITHM_KOKKOS_DECL_HPP
 
#include "MueLu_ConfigDefs.hpp"
#include "MueLu_AggregationAlgorithmBase_kokkos.hpp"
#include "MueLu_AggregationStructuredAlgorithm_kokkos_fwd.hpp"
 
#include "MueLu_Aggregates_fwd.hpp"
#include "MueLu_IndexManager_kokkos_fwd.hpp"
#include "MueLu_LWGraph_kokkos.hpp"
 
namespace MueLu {
 
  template<class LocalOrdinal = DefaultLocalOrdinal,
           class GlobalOrdinal = DefaultGlobalOrdinal,
           class Node = DefaultNode>
  class AggregationStructuredAlgorithm_kokkos :
    public MueLu::AggregationAlgorithmBase_kokkos<LocalOrdinal,GlobalOrdinal,Node> {
#undef MUELU_AGGREGATIONSTRUCTUREDALGORITHM_KOKKOS_SHORT
#include "MueLu_UseShortNamesOrdinal.hpp"
 
  public:
 
    using local_graph_type       = typename LWGraph_kokkos::local_graph_type;
    using non_const_row_map_type = typename local_graph_type::row_map_type::non_const_type;
    using size_type              = typename local_graph_type::size_type;
    using entries_type           = typename local_graph_type::entries_type;
    using device_type            = typename local_graph_type::device_type;
    using execution_space        = typename local_graph_type::device_type::execution_space;
    using memory_space           = typename local_graph_type::device_type::memory_space;
 
    using LOVectorView = decltype(std::declval<LOVector>().getDeviceLocalView(Xpetra::Access::ReadWrite));
    using constIntTupleView = typename Kokkos::View<const int[3], device_type>;
    using constLOTupleView  = typename Kokkos::View<const LO[3],  device_type>;



    AggregationStructuredAlgorithm_kokkos() { }

    virtual ~AggregationStructuredAlgorithm_kokkos() { }

 



 
    void BuildAggregates(const Teuchos::ParameterList& params,
                         const LWGraph_kokkos& graph,
                         Aggregates& aggregates,
                         Kokkos::View<unsigned*, device_type>& aggStat,
                         LO& numNonAggregatedNodes) const;

 
    void BuildGraph(const LWGraph_kokkos& graph,
                    RCP<IndexManager_kokkos>& geoData,
                    const LO dofsPerNode,
                    RCP<CrsGraph>& myGraph) const;
 
    std::string description() const { return "Aggretation: structured algorithm"; }
 
    struct fillAggregatesFunctor{
 
      IndexManager_kokkos geoData_;
      const int myRank_;
      Kokkos::View<unsigned*, device_type> aggStat_;
      LOVectorView vertex2AggID_;
      LOVectorView procWinner_;
 
      fillAggregatesFunctor(RCP<IndexManager_kokkos> geoData,
                            const int myRank,
                            Kokkos::View<unsigned*, device_type> aggStat,
                            LOVectorView vertex2AggID,
                            LOVectorView procWinner);
 
      KOKKOS_INLINE_FUNCTION
      void operator() (const LO nodeIdx, LO& lNumAggregatedNodes) const;
 
    }; // struct fillAggregatesFunctor
 
    struct computeGraphDataConstantFunctor {
 
      IndexManager_kokkos geoData_;
      const int numGhostedNodes_;
      const LO dofsPerNode_;
      constIntTupleView coarseRate_;
      constIntTupleView endRate_;
      constLOTupleView  lFineNodesPerDir_;
      non_const_row_map_type             rowPtr_;
      entries_type                       colIndex_;
 
 
      computeGraphDataConstantFunctor(RCP<IndexManager_kokkos> geoData,
                                      const LO numGhostedNodes, const LO dofsPerNode,
                                      constIntTupleView coarseRate, constIntTupleView endRate,
                                      constLOTupleView  lFineNodesPerDir,
                                      non_const_row_map_type rowPtr, entries_type colIndex);
 
      KOKKOS_INLINE_FUNCTION
      void operator() (const LO nodeIdx) const;
 
    }; // struct computeGraphDataConstantFunctor
 
    struct computeGraphRowPtrFunctor {
 
      IndexManager_kokkos geoData_;
      const LO dofsPerNode_;
      const int numInterpolationPoints_;
      const LO numLocalRows_;
      constIntTupleView coarseRate_;
      constLOTupleView lFineNodesPerDir_;
      non_const_row_map_type rowPtr_;
 
      computeGraphRowPtrFunctor(RCP<IndexManager_kokkos> geoData,
                                const LO dofsPerNode,
                                const int numInterpolationPoints, const LO  numLocalRows,
                                constIntTupleView coarseRate, constLOTupleView lFineNodesPerDir,
                                non_const_row_map_type rowPtr);
 
      KOKKOS_INLINE_FUNCTION
      void operator() (const LO rowIdx, GO& update, const bool final) const;
    }; // struct computeGraphRowPtrFunctor
 
    struct computeGraphDataLinearFunctor {
 
      IndexManager_kokkos geoData_;
      const int numDimensions_;
      const int numGhostedNodes_;
      const LO dofsPerNode_;
      const int numInterpolationPoints_;
      constIntTupleView coarseRate_;
      constIntTupleView endRate_;
      constLOTupleView  lFineNodesPerDir_;
      constLOTupleView  ghostedNodesPerDir_;
      non_const_row_map_type                    rowPtr_;
      entries_type                              colIndex_;
 
 
      computeGraphDataLinearFunctor(RCP<IndexManager_kokkos> geoData,
                                    const int numDimensions,
                                    const LO numGhostedNodes, const LO dofsPerNode,
                                    const int numInterpolationPoints,
                                    constIntTupleView coarseRate, constIntTupleView endRate,
                                    constLOTupleView lFineNodesPerDir,
                                    constLOTupleView ghostedNodesPerDir,
                                    non_const_row_map_type rowPtr, entries_type colIndex);
 
      KOKKOS_INLINE_FUNCTION
      void operator() (const LO nodeIdx) const;
 
    }; // struct computeGraphDataLinearFunctor
 
  }; // class AggregationStructuredAlgorithm_kokkos
 
} //namespace MueLu
 
#define MUELU_AGGREGATIONSTRUCTUREDALGORITHM_KOKKOS_SHORT
#endif /* MUELU_AGGREGATIONSTRUCTUREDALGORITHM_DECL_HPP_ */