Begining of Boundary definition

src/mesh/Boundary.hpp

+#ifndef BOUNDARY_HPP
+#define BOUNDARY_HPP
+
+#include <Kokkos_Core.hpp>
+#include <RefId.hpp>
+
+class Boundary
+{
+ private:
+  RefId m_ref_id;
+  Kokkos::View<unsigned int*> m_face_list;
+  Kokkos::View<unsigned int*> m_node_list;
+
+ public:
+  const RefId& refId() const
+  {
+    return m_ref_id;
+  }
+
+  const Kokkos::View<const unsigned int*> faceList() const
+  {
+    return m_face_list;
+  }
+
+  const Kokkos::View<const unsigned int*> nodeList() const
+  {
+    return m_node_list;
+  }
+
+  Boundary(const RefId& ref_id,
+           Kokkos::View<unsigned int*> face_list)
+      : m_ref_id(ref_id),
+        m_face_list(face_list)
+  {
+    ;
+  }
+
+  ~Boundary()
+  {
+    ;
+  }
+};
+
+#endif // BOUNDARY_HPP

src/scheme/BoundaryCondition.hpp

@@ -4,6 +4,8 @@
 #include <vector>
 #include <memory>
 
+#include <Kokkos_Core.hpp>
+
 class BoundaryCondition
 {
 public: