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Panzer_VectorToScalar_impl.hpp
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42 
43 #ifndef PANZER_VECTOR_TO_SCALAR_IMPL_HPP
44 #define PANZER_VECTOR_TO_SCALAR_IMPL_HPP
45 
46 #include <string>
47 
48 namespace panzer {
49 
50 //**********************************************************************
51 template<typename EvalT, typename Traits>
54  const Teuchos::ParameterList& p)
55 {
57  p.get< Teuchos::RCP<PHX::DataLayout> >("Data Layout Scalar");
58 
60  p.get< Teuchos::RCP<PHX::DataLayout> >("Data Layout Vector");
61 
62  const std::vector<std::string>& scalar_names =
63  *(p.get< Teuchos::RCP<const std::vector<std::string> > >("Scalar Names"));
64 
65  scalar_fields.resize(scalar_names.size());
66  for (std::size_t i=0; i < scalar_names.size(); ++i)
67  scalar_fields[i] =
68  PHX::MDField<ScalarT,Cell,Point>(scalar_names[i], scalar_dl);
69 
70  vector_field =
71  PHX::MDField<const ScalarT,Cell,Point,Dim>(p.get<std::string>
72  ("Vector Name"), vector_dl);
73 
74  this->addDependentField(vector_field);
75 
76  for (std::size_t i=0; i < scalar_fields.size(); ++i)
77  this->addEvaluatedField(scalar_fields[i]);
78 
79  std::string n = "VectorToScalar: " + vector_field.fieldTag().name();
80  this->setName(n);
81 }
82 
83 //**********************************************************************
84 
85 template<typename EvalT, typename Traits> \
86 VectorToScalar<EvalT,Traits>::
87 VectorToScalar(const PHX::FieldTag & input,
88  const std::vector<PHX::Tag<ScalarT>> & output)
89 {
90  // setup the fields
91  vector_field = input;
92 
93  scalar_fields.resize(output.size());
94  for(std::size_t i=0;i<output.size();i++)
95  scalar_fields[i] = output[i];
96 
97  // add dependent/evaluate fields
98  this->addDependentField(vector_field);
99 
100  for (std::size_t i=0; i < scalar_fields.size(); ++i)
101  this->addEvaluatedField(scalar_fields[i]);
102 
103  // name array
104  std::string n = "VectorToScalar: " + vector_field.fieldTag().name();
105  this->setName(n);
106 }
107 
108 //**********************************************************************
109 template<typename EvalT, typename Traits>
110 void
113  typename Traits::EvalData workset)
114 {
115 
116  // Iteration bounds
117  const int num_points = vector_field.extent_int(1);
118  const int num_scalars = std::min(static_cast<int>(scalar_fields.size()),
119  vector_field.extent_int(2));
120 
121  // Need local copies for cuda, *this is not usable
122  auto local_vector_field = vector_field;
123 
124  // We parallelize over each scalar field
125  for (int sc = 0; sc < num_scalars; ++sc) {
126  auto local_scalar_field = scalar_fields[sc];
127  Kokkos::parallel_for(workset.num_cells, KOKKOS_LAMBDA (const int cell) {
128  for (int pt = 0; pt < num_points; ++pt)
129  local_scalar_field(cell,pt) = local_vector_field(cell,pt,sc);
130  });
131  }
132 
133  // If there are remaining fields, set them to zero
134  for(unsigned int sc = num_scalars; sc < scalar_fields.size(); ++sc)
135  Kokkos::deep_copy(scalar_fields[sc].get_static_view(), 0.);
136 }
137 
138 //**********************************************************************
139 
140 }
141 
142 #endif
T & get(const std::string &name, T def_value)
VectorToScalar(const Teuchos::ParameterList &p)
void evaluateFields(typename Traits::EvalData d)