MetisGraphDigest.h

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2026 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
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/* MetisGraphDigest.h                                          (C) 2000-2024 */
/*                                                                           */
/* Calculates a global checksum of Metis inputs/outputs.                     */
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#ifndef ARCANE_STD_INTERNAL_METISGRAPHDIGEST
#define ARCANE_STD_INTERNAL_METISGRAPHDIGEST
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#include "arcane/utils/String.h"
#include "arcane/utils/TraceAccessor.h"
 
#include "arcane/core/ArcaneTypes.h"
 
#include "arcane/std/internal/MetisGraph.h"
 
#include <string>
 
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namespace Arcane
{
 
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class MetisGraphDigest
: public TraceAccessor
{
 public:
 
  explicit MetisGraphDigest(IParallelMng* pm);
 
 public:

  String computeInputDigest(const bool need_part, const int nb_options,
                            const MetisGraphView& my_graph, const idx_t* vtxdist, const idx_t* wgtflag,
                            const idx_t* numflag, const idx_t* ncon, const idx_t* nparts,
                            const real_t* tpwgts, const real_t* ubvec, const real_t* ipc2redist,
                            const idx_t* options);

  String computeOutputDigest(const MetisGraphView& my_graph, const idx_t* edgecut);
 
 private:
 
  IParallelMng* m_parallel_mng = nullptr;
  Int32 m_my_rank = A_NULL_RANK;
  Int32 m_nb_rank = 0;
 
 private:
 
  void _computeHash(Span<const idx_t> data, ByteArray& output, const char* name);
  void _computeHash(Span<const real_t> data, ByteArray& output, const char* name);
  String _digestString(ConstArrayView<Byte> my_digest);
};
 
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} // namespace Arcane
 
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#endif