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Panzer_DOFManager_Functors.hpp
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42 
43 #ifndef __Panzer_DOFManager_Functors_hpp__
44 #define __Panzer_DOFManager_Functors_hpp__
45 
46 #include "Kokkos_Core.hpp"
47 #include "Phalanx_KokkosDeviceTypes.hpp"
48 
49 namespace panzer {
50 namespace dof_functors {
51 
53 template <typename ReductionDataType, typename view_t>
54 struct SumRank2 {
55  using policy_t = Kokkos::MDRangePolicy<typename view_t::execution_space, Kokkos::Rank<2>>;
56 
57  const view_t values;
58 
59  void apply(ReductionDataType& sum) const
60  {
61  const auto& values_ref = values;
62 
63  Kokkos::parallel_reduce(
64  policy_t({0, 0}, {values.extent(0), values.extent(1)}),
65  KOKKOS_LAMBDA(const typename policy_t::index_type indexi, const typename policy_t::index_type indexj, ReductionDataType& local_sum)
66  {
67  local_sum += values_ref(indexi, indexj);
68  },
69  Kokkos::Sum<ReductionDataType>(sum)
70  );
71  }
72 };
73 
74 }
75 }
76 
77 #endif
Sums all entries of a Rank 2 Kokkos View.
Kokkos::MDRangePolicy< typename view_t::execution_space, Kokkos::Rank< 2 >> policy_t
void apply(ReductionDataType &sum) const