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MueLu_IsolatedNodeAggregationAlgorithm_kokkos_def.hpp
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46 #ifndef MUELU_ISOLATEDNODEAGGREGATIONALGORITHM_KOKKOS_DEF_HPP
47 #define MUELU_ISOLATEDNODEAGGREGATIONALGORITHM_KOKKOS_DEF_HPP
48 
49 #ifdef HAVE_MUELU_KOKKOS_REFACTOR
50 
51 #include <Teuchos_Comm.hpp>
52 #include <Teuchos_CommHelpers.hpp>
53 
54 #include <Xpetra_Vector.hpp>
55 
56 #include "MueLu_IsolatedNodeAggregationAlgorithm_kokkos.hpp"
57 
58 #include "MueLu_LWGraph_kokkos.hpp"
59 #include "MueLu_Aggregates_kokkos.hpp"
60 #include "MueLu_Exceptions.hpp"
61 #include "MueLu_Monitor.hpp"
62 
63 namespace MueLu {
64 
65  template <class LocalOrdinal, class GlobalOrdinal, class Node>
66  void IsolatedNodeAggregationAlgorithm_kokkos<LocalOrdinal, GlobalOrdinal, Node>::
67  BuildAggregates(const ParameterList& /* params */, const LWGraph_kokkos& graph, Aggregates_kokkos& /* aggregates */, std::vector<unsigned>& aggStat, LO& numNonAggregatedNodes) const {
68  Monitor m(*this, "BuildAggregates");
69 
70  const LO numRows = graph.GetNodeNumVertices();
71 
72  // Remove all isolated nodes
73  for (LO i = 0; i < numRows; i++)
74  if (aggStat[i] != AGGREGATED && aggStat[i] != IGNORED && graph.getNeighborVertices(i).length == 1) {
75  aggStat[i] = IGNORED;
76  numNonAggregatedNodes--;
77  }
78  }
79 
80 } // end namespace
81 
82 #endif // HAVE_MUELU_KOKKOS_REFACTOR
83 #endif // MUELU_ISOLATEDNODEAGGREGATIONALGORITHM_KOKKOS_DEF_HPP
LocalOrdinal LO