1 // Copyright (C) 2007-2023 CEA, EDF
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 #ifdef MED_ENABLE_PARMETIS
21 // include parmetis.h even if it is not needed here
22 // to avoid inclusion of c++ definitions within extern "C"
23 // from metis.h from parmetis.h from mpi.h(openmpi) from mpicxx.h
31 #include "MEDCouplingMemArray.hxx"
34 #include "RENUMBER_METISRenumbering.hxx"
36 #ifdef MEDCOUPLING_USE_64BIT_IDS
37 #define ID_TYPE_SIZE 64
39 #define ID_TYPE_SIZE 32
42 void METISRenumbering::renumber(const mcIdType *graph, const mcIdType *index_graph, mcIdType nbCell, MEDCoupling::DataArrayIdType *&iperm, MEDCoupling::DataArrayIdType *&perm)
44 MEDCoupling::MCAuto<MEDCoupling::DataArrayIdType> out0(MEDCoupling::DataArrayIdType::New()),out1(MEDCoupling::DataArrayIdType::New());
45 out0->alloc(nbCell,1); out1->alloc(nbCell,1);
46 out0->fillWithZero(); out1->fillWithZero();
50 #if ID_TYPE_SIZE == IDXTYPEWIDTH
52 METIS_NodeND(&nbCell,(idx_t*)index_graph,(idx_t*)graph,&num_flag,&options,out0->getPointer(),out1->getPointer());
56 mcIdType indexSize = nbCell + 1, graphSize = index_graph[indexSize];
57 std::vector<idx_t> indexVec( index_graph, index_graph + indexSize );
58 std::vector<idx_t> graphVec( graph, graph + graphSize );
59 std::vector<idx_t> out0Vec( nbCell ), out1Vec( nbCell );
60 idx_t nb = static_cast<idx_t>( nbCell );
61 METIS_NodeND(&nb,indexVec.data(),graphVec.data(),&num_flag,&options,out0Vec.data(),out1Vec.data());
62 std::copy( out0Vec.begin(),out0Vec.end(),out0->getPointer() );
63 std::copy( out1Vec.begin(),out1Vec.end(),out1->getPointer() );
67 iperm=out0.retn(); perm=out1.retn();