src/foam/matrices/LUscalarMatrix/LUscalarMatrixTemplates.C

   1 /*---------------------------------------------------------------------------*\
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   8 License
   9     This file is part of foam-extend.
  10
  11     foam-extend is free software: you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by the
  13     Free Software Foundation, either version 3 of the License, or (at your
  14     option) any later version.
  15
  16     foam-extend is distributed in the hope that it will be useful, but
  17     WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19     General Public License for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 \*---------------------------------------------------------------------------*/
  25
  26 #include "LUscalarMatrix.H"
  27
  28 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  29
  30 template<class Type>
  31 void Foam::LUscalarMatrix::solve(Field<Type>& sourceSol) const
  32 {
  33     if (Pstream::parRun())
  34     {
  35         Field<Type> completeSourceSol(n());
  36
  37         if (Pstream::master())
  38         {
  39             typename Field<Type>::subField
  40             (
  41                 completeSourceSol,
  42                 sourceSol.size()
  43             ).assign(sourceSol);
  44
  45             for
  46             (
  47                 int slave=Pstream::firstSlave();
  48                 slave<=Pstream::lastSlave();
  49                 slave++
  50             )
  51             {
  52                 IPstream::read
  53                 (
  54                     Pstream::scheduled,
  55                     slave,
  56                     reinterpret_cast<char*>
  57                     (
  58                         &(completeSourceSol[procOffsets_[slave]])
  59                     ),
  60                     (procOffsets_[slave + 1] - procOffsets_[slave])*sizeof(Type)
  61                 );
  62             }
  63         }
  64         else
  65         {
  66             OPstream::write
  67             (
  68                 Pstream::scheduled,
  69                 Pstream::masterNo(),
  70                 reinterpret_cast<const char*>(sourceSol.begin()),
  71                 sourceSol.byteSize()
  72             );
  73         }
  74
  75         if (Pstream::master())
  76         {
  77             LUBacksubstitute(*this, pivotIndices_, completeSourceSol);
  78
  79             sourceSol = typename Field<Type>::subField
  80             (
  81                 completeSourceSol,
  82                 sourceSol.size()
  83             );
  84
  85             for
  86             (
  87                 int slave=Pstream::firstSlave();
  88                 slave<=Pstream::lastSlave();
  89                 slave++
  90             )
  91             {
  92                 OPstream::write
  93                 (
  94                     Pstream::blocking,
  95                     slave,
  96                     reinterpret_cast<const char*>
  97                     (
  98                         &(completeSourceSol[procOffsets_[slave]])
  99                     ),
 100                     (procOffsets_[slave + 1] - procOffsets_[slave])*sizeof(Type)
 101                 );
 102             }
 103         }
 104         else
 105         {
 106             IPstream::read
 107             (
 108                 Pstream::blocking,
 109                 Pstream::masterNo(),
 110                 reinterpret_cast<char*>(sourceSol.begin()),
 111                 sourceSol.byteSize()
 112             );
 113         }
 114     }
 115     else
 116     {
 117         LUBacksubstitute(*this, pivotIndices_, sourceSol);
 118     }
 119 }
 120
 121
 122 // ************************************************************************* //