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MueLu_CoarseMapFactory_kokkos_def.hpp
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46 #ifndef MUELU_COARSEMAPFACTORY_KOKKOS_DEF_HPP_
47 #define MUELU_COARSEMAPFACTORY_KOKKOS_DEF_HPP_
48 
50 
51 #include <Teuchos_Array.hpp>
52 
53 #include <Xpetra_MultiVector.hpp>
54 
55 #include "MueLu_Level.hpp"
56 #include "MueLu_Aggregates_kokkos.hpp"
57 #include "MueLu_Monitor.hpp"
58 
59 namespace MueLu {
60 
61  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class DeviceType>
62  RCP<const ParameterList> CoarseMapFactory_kokkos<Scalar, LocalOrdinal, GlobalOrdinal, Kokkos::Compat::KokkosDeviceWrapperNode<DeviceType>>::GetValidParameterList() const {
63  RCP<ParameterList> validParamList = rcp(new ParameterList());
64 
65  validParamList->set<RCP<const FactoryBase> >("Aggregates", Teuchos::null, "Generating factory for aggregates.");
66  validParamList->set<RCP<const FactoryBase> >("Nullspace", Teuchos::null, "Generating factory for null space.");
67 
68  return validParamList;
69  }
70 
71  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class DeviceType>
72  void CoarseMapFactory_kokkos<Scalar, LocalOrdinal, GlobalOrdinal, Kokkos::Compat::KokkosDeviceWrapperNode<DeviceType>>::DeclareInput(Level& currentLevel) const {
73  Input(currentLevel, "Aggregates");
74  Input(currentLevel, "Nullspace");
75  }
76 
77  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class DeviceType>
78  void CoarseMapFactory_kokkos<Scalar, LocalOrdinal, GlobalOrdinal, Kokkos::Compat::KokkosDeviceWrapperNode<DeviceType>>::Build(Level& currentLevel) const {
79  FactoryMonitor m(*this, "Build", currentLevel);
80 
81  auto aggregates = Get<RCP<Aggregates_kokkos> >(currentLevel, "Aggregates");
82  auto nullspace = Get<RCP<MultiVector> > (currentLevel, "Nullspace");
83 
84  auto map = aggregates->GetMap();
85 
86  const GO numAggs = aggregates->GetNumAggregates();
87  const size_t NSDim = nullspace->getNumVectors();
88 
89  GlobalOrdinal numCoarseDofs = numAggs * NSDim;
90 
91  std::vector<size_t> stridingInfo(1);
92  stridingInfo[0] = NSDim;
93 
95  RCP<const Map> coarseMap = StridedMapFactory::Build(map->lib(), INVALID, numCoarseDofs, map->getIndexBase(), stridingInfo, map->getComm());
96 
97  Set(currentLevel, "CoarseMap", coarseMap);
98  }
99 
100 } //namespace MueLu
101 
102 #endif /* MUELU_COARSEMAPFACTORY_KOKKOS_DEF_HPP_ */
GlobalOrdinal GO
TEUCHOS_DEPRECATED RCP< T > rcp(T *p, Dealloc_T dealloc, bool owns_mem)