Panzer_SubcellConnectivity.hpp

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// @HEADER
// *****************************************************************************
//           Panzer: A partial differential equation assembly
//       engine for strongly coupled complex multiphysics systems
//
// Copyright 2011 NTESS and the Panzer contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
 
#ifndef PANZER_SUBCELL_CONNECTIVITY_HPP
#define PANZER_SUBCELL_CONNECTIVITY_HPP
 
#include "PanzerCore_config.hpp"
#include "Phalanx_KokkosDeviceTypes.hpp"
#include "Teuchos_Assert.hpp"
 
namespace panzer {
 
struct LocalMeshPartition;
 
class SubcellConnectivity
{
public:
 
  SubcellConnectivity() = default;
 
  ~SubcellConnectivity() = default;
 
  KOKKOS_INLINE_FUNCTION
  int numSubcells() const {return _subcell_to_cells_adj.extent(0)-1;}
 
  KOKKOS_INLINE_FUNCTION
  int numCells() const {return _cell_to_subcells_adj.extent(0)-1;}
 
  KOKKOS_INLINE_FUNCTION
  int numSubcellsOnCell(const int cell) const;
  inline
  int numSubcellsOnCellHost(const int cell) const;
 
  KOKKOS_INLINE_FUNCTION
  int numCellsOnSubcell(const int subcell) const;
  inline
  int numCellsOnSubcellHost(const int subcell) const;
 
  KOKKOS_INLINE_FUNCTION
  int subcellForCell(const int cell, const int local_subcell_index) const;
  inline
  int subcellForCellHost(const int cell, const int local_subcell_index) const;
 
  KOKKOS_INLINE_FUNCTION
  int cellForSubcell(const int subcell, const int local_cell_index) const;
  inline
  int cellForSubcellHost(const int subcell, const int local_cell_index) const;
 
  KOKKOS_INLINE_FUNCTION
  int localSubcellForSubcell(const int subcell, const int local_cell_index) const;
  inline
  int localSubcellForSubcellHost(const int subcell, const int local_cell_index) const;
 
protected:
 
  PHX::View<int*> _subcell_to_cells_adj;
  PHX::View<int*>::host_mirror_type _subcell_to_cells_adj_host;
 
  PHX::View<int*> _subcell_to_cells;
  PHX::View<int*>::host_mirror_type _subcell_to_cells_host;
 
  PHX::View<int*> _subcell_to_local_subcells;
  PHX::View<int*>::host_mirror_type _subcell_to_local_subcells_host;
 
  PHX::View<int*> _cell_to_subcells_adj;
  PHX::View<int*>::host_mirror_type _cell_to_subcells_adj_host;
 
  PHX::View<int*> _cell_to_subcells;
  PHX::View<int*>::host_mirror_type _cell_to_subcells_host;
 
};
 
class FaceConnectivity:
    public SubcellConnectivity
{
public:
 
  FaceConnectivity() = default;
 
  ~FaceConnectivity() = default;
 
  void setup(const panzer::LocalMeshPartition & partition);
 
};
 
// **********************************
// Inlined functions
// **********************************
 
PHALANX_HIP_HACK_KOKKOS_FUNCTION
int
SubcellConnectivity::
numSubcellsOnCell(const int cell) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(cell >= 0 and cell < numCells());
#endif
  return _cell_to_subcells_adj(cell+1)-_cell_to_subcells_adj(cell);
}
 
int
SubcellConnectivity::
numSubcellsOnCellHost(const int cell) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(cell >= 0 and cell < numCells());
#endif
  return _cell_to_subcells_adj_host(cell+1)-_cell_to_subcells_adj_host(cell);
}
 
PHALANX_HIP_HACK_KOKKOS_FUNCTION
int
SubcellConnectivity::
numCellsOnSubcell(const int subcell) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(subcell >= 0 and subcell < numSubcells());
#endif
  return _subcell_to_cells_adj(subcell+1)-_subcell_to_cells_adj(subcell);
}
 
int
SubcellConnectivity::
numCellsOnSubcellHost(const int subcell) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(subcell >= 0 and subcell < numSubcells());
#endif
  return _subcell_to_cells_adj_host(subcell+1)-_subcell_to_cells_adj_host(subcell);
}
 
PHALANX_HIP_HACK_KOKKOS_FUNCTION
int
SubcellConnectivity::
subcellForCell(const int cell, const int local_subcell_index) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(cell >= 0 and cell < numCells());
  KOKKOS_ASSERT(local_subcell_index < numSubcellsOnCell(cell));
#endif
  const int index = _cell_to_subcells_adj(cell)+local_subcell_index;
  return _cell_to_subcells(index);
}
 
int
SubcellConnectivity::
subcellForCellHost(const int cell, const int local_subcell_index) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(cell >= 0 and cell < numCells());
  KOKKOS_ASSERT(local_subcell_index < numSubcellsOnCellHost(cell));
#endif
  const int index = _cell_to_subcells_adj_host(cell)+local_subcell_index;
  return _cell_to_subcells_host(index);
}
 
PHALANX_HIP_HACK_KOKKOS_FUNCTION
int
SubcellConnectivity::
cellForSubcell(const int subcell, const int local_cell_index) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(subcell >= 0 and subcell < numSubcells());
  KOKKOS_ASSERT(local_cell_index < numCellsOnSubcell(subcell));
#endif
  const int index = _subcell_to_cells_adj(subcell)+local_cell_index;
  return _subcell_to_cells(index);
}
 
int
SubcellConnectivity::
cellForSubcellHost(const int subcell, const int local_cell_index) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(subcell >= 0 and subcell < numSubcells());
  KOKKOS_ASSERT(local_cell_index < numCellsOnSubcellHost(subcell));
#endif
  const int index = _subcell_to_cells_adj_host(subcell)+local_cell_index;
  return _subcell_to_cells_host(index);
}
 
PHALANX_HIP_HACK_KOKKOS_FUNCTION
int
SubcellConnectivity::
localSubcellForSubcell(const int subcell, const int local_cell_index) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(subcell >= 0 and subcell < numSubcells());
  KOKKOS_ASSERT(local_cell_index < numCellsOnSubcell(subcell));
#endif
  const int index = _subcell_to_cells_adj(subcell)+local_cell_index;
  return _subcell_to_local_subcells(index);
}
 
int
SubcellConnectivity::
localSubcellForSubcellHost(const int subcell, const int local_cell_index) const
{
#ifdef PANZER_DEBUG
  KOKKOS_ASSERT(subcell >= 0 and subcell < numSubcells());
  KOKKOS_ASSERT(local_cell_index < numCellsOnSubcellHost(subcell));
#endif
  const int index = _subcell_to_cells_adj_host(subcell)+local_cell_index;
  return _subcell_to_local_subcells_host(index);
}
 
} // namespace panzer
 
#endif