Ioexnl_DecompositionData.h

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/*
 * Copyright(C) 1999-2024 National Technology & Engineering Solutions
 * of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
 * NTESS, the U.S. Government retains certain rights in this software.
 *
 * See packages/seacas/LICENSE for details
 */
#pragma once
 
#include <exodusII.h>
#if defined PARALLEL_AWARE_EXODUS
 
#include "Ioss_CodeTypes.h"
#include <string>
#include <vector>
 
#include "ioexnl_export.h"
 
#include "Ioss_Decomposition.h"
 
namespace Ioss {
  class Field;
  class Map;
  class PropertyManager;
} // namespace Ioss
namespace Ioexnl {
 
  class IOEXNL_EXPORT DecompositionDataBase
  {
  public:
    DecompositionDataBase(Ioss_MPI_Comm comm) : comm_(comm) {}
    DecompositionDataBase(const DecompositionDataBase &)            = delete;
    DecompositionDataBase &operator=(const DecompositionDataBase &) = delete;
 
    virtual ~DecompositionDataBase()                      = default;
    IOSS_NODISCARD virtual int    int_size() const        = 0;
    IOSS_NODISCARD virtual size_t ioss_node_count() const = 0;
    IOSS_NODISCARD virtual size_t ioss_elem_count() const = 0;
 
    IOSS_NODISCARD virtual int    spatial_dimension() const = 0;
    IOSS_NODISCARD virtual size_t global_node_count() const = 0;
    IOSS_NODISCARD virtual size_t global_elem_count() const = 0;
 
    IOSS_NODISCARD virtual size_t decomp_node_offset() const = 0;
    IOSS_NODISCARD virtual size_t decomp_node_count() const  = 0;
    IOSS_NODISCARD virtual size_t decomp_elem_offset() const = 0;
    IOSS_NODISCARD virtual size_t decomp_elem_count() const  = 0;
 
    Ioss_MPI_Comm comm_;
 
    int m_processor{0};
    int m_processorCount{0};
 
    std::vector<Ioss::BlockDecompositionData> el_blocks;
    std::vector<Ioss::SetDecompositionData>   node_sets;
    std::vector<Ioss::SetDecompositionData>   side_sets;
  };
 
  template <typename INT> class DecompositionData : public DecompositionDataBase
  {
  public:
    DecompositionData(const Ioss::PropertyManager &props, Ioss_MPI_Comm communicator);
    ~DecompositionData() = default;
 
    IOSS_NODISCARD int int_size() const { return sizeof(INT); }
 
    IOSS_NODISCARD int spatial_dimension() const { return m_decomposition.m_spatialDimension; }
 
    IOSS_NODISCARD size_t global_node_count() const { return m_decomposition.global_node_count(); }
    IOSS_NODISCARD size_t global_elem_count() const { return m_decomposition.global_elem_count(); }
 
    IOSS_NODISCARD size_t ioss_node_count() const { return m_decomposition.ioss_node_count(); }
    IOSS_NODISCARD size_t ioss_elem_count() const { return m_decomposition.ioss_elem_count(); }
 
    IOSS_NODISCARD size_t decomp_node_offset() const { return m_decomposition.file_node_offset(); }
    IOSS_NODISCARD size_t decomp_node_count() const { return m_decomposition.file_node_count(); }
    IOSS_NODISCARD size_t decomp_elem_offset() const { return m_decomposition.file_elem_offset(); }
    IOSS_NODISCARD size_t decomp_elem_count() const { return m_decomposition.file_elem_count(); }
 
    void create_implicit_global_map(const std::vector<int> &owning_proc,
                                    std::vector<int64_t> &global_implicit_map, Ioss::Map &node_map,
                                    int64_t *locally_owned_count, int64_t *processor_offset);
 
  private:
    void simple_decompose(const std::string &method, const std::vector<INT> &element_dist)
    {
      m_decomposition.simple_decompose(method, element_dist);
    }
 
    void simple_node_decompose(const std::string &method, const std::vector<INT> &node_dist);
 
    template <typename T>
    int handle_sset_df(int filePtr, ex_entity_id id, const Ioss::Field &field, T *ioss_data) const;
 
    IOSS_NODISCARD bool i_own_node(size_t node) const
    {
      // T/F if the node with global index `node` is owned by this processors ioss-decomp.
      return m_decomposition.i_own_node(node);
    }
 
    IOSS_NODISCARD bool i_own_elem(size_t elem) const
    // T/F if the element with global index `elem` is owned by this processors ioss-decomp.
    {
      return m_decomposition.i_own_elem(elem);
    }
 
    // global_index is 1-based index into global list of nodes [1..global_node_count]
    // return value is 1-based index into local list of nodes on this
    // processor (ioss-decomposition)
    IOSS_NODISCARD size_t node_global_to_local(size_t global_index) const
    {
      return m_decomposition.node_global_to_local(global_index);
    }
 
    IOSS_NODISCARD size_t elem_global_to_local(size_t global_index) const
    {
      return m_decomposition.elem_global_to_local(global_index);
    }
 
    void build_global_to_local_elem_map()
    {
      return m_decomposition.build_global_to_local_elem_map();
    }
 
    void get_shared_node_list() { m_decomposition.get_shared_node_list(); }
 
    void get_local_node_list() { m_decomposition.get_local_node_list(); }
 
  public:
    Ioss::Decomposition<INT> m_decomposition;
  };
} // namespace Ioexnl
#endif