MueLu_IsolatedNodeAggregationAlgorithm_kokkos_def.hpp

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#ifndef MUELU_ISOLATEDNODEAGGREGATIONALGORITHM_KOKKOS_DEF_HPP
#define MUELU_ISOLATEDNODEAGGREGATIONALGORITHM_KOKKOS_DEF_HPP

#ifdef HAVE_MUELU_KOKKOS_REFACTOR

#include <Teuchos_Comm.hpp>
#include <Teuchos_CommHelpers.hpp>

#include <Xpetra_Vector.hpp>

#include "MueLu_IsolatedNodeAggregationAlgorithm_kokkos.hpp"

#include "MueLu_LWGraph_kokkos.hpp"
#include "MueLu_Aggregates_kokkos.hpp"
#include "MueLu_Exceptions.hpp"
#include "MueLu_Monitor.hpp"

namespace MueLu {

  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  void IsolatedNodeAggregationAlgorithm_kokkos<LocalOrdinal, GlobalOrdinal, Node>::
  BuildAggregates(const ParameterList& /* params */, const LWGraph_kokkos& graph, Aggregates_kokkos& /* aggregates */, std::vector<unsigned>& aggStat, LO& numNonAggregatedNodes) const {
    Monitor m(*this, "BuildAggregates");

    const LO  numRows = graph.GetNodeNumVertices();

    // Remove all isolated nodes
    for (LO i = 0; i < numRows; i++)
      if (aggStat[i] != AGGREGATED && aggStat[i] != IGNORED && graph.getNeighborVertices(i).length == 1) {
        aggStat[i] = IGNORED;
        numNonAggregatedNodes--;
      }
  }

} // end namespace

#endif // HAVE_MUELU_KOKKOS_REFACTOR
#endif // MUELU_ISOLATEDNODEAGGREGATIONALGORITHM_KOKKOS_DEF_HPP