src/OpenFOAM/matrices/LUscalarMatrix/LUscalarMatrixTemplates.C

   1 /*---------------------------------------------------------------------------*\
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   5     \\  /    A nd           | Copyright (C) 1991-2008 OpenCFD Ltd.
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   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  11     OpenFOAM 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 2 of the License, or (at your
  14     option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
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  24
  25 \*---------------------------------------------------------------------------*/
  26
  27 #include "LUscalarMatrix.H"
  28
  29 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  30
  31 template<class T>
  32 void Foam::LUscalarMatrix::solve(Field<T>& sourceSol) const
  33 {
  34     if (Pstream::parRun())
  35     {
  36         Field<T> completeSourceSol(n());
  37
  38         if (Pstream::master())
  39         {
  40             typename Field<T>::subField
  41             (
  42                 completeSourceSol,
  43                 sourceSol.size()
  44             ).assign(sourceSol);
  45
  46             for
  47             (
  48                 int slave=Pstream::firstSlave();
  49                 slave<=Pstream::lastSlave();
  50                 slave++
  51             )
  52             {
  53                 IPstream::read
  54                 (
  55                     Pstream::scheduled,
  56                     slave,
  57                     reinterpret_cast<char*>
  58                     (
  59                         &(completeSourceSol[procOffsets_[slave]])
  60                     ),
  61                     (procOffsets_[slave + 1] - procOffsets_[slave])*sizeof(T)
  62                 );
  63             }
  64         }
  65         else
  66         {
  67             OPstream::write
  68             (
  69                 Pstream::scheduled,
  70                 Pstream::masterNo(),
  71                 reinterpret_cast<const char*>(sourceSol.begin()),
  72                 sourceSol.byteSize()
  73             );
  74         }
  75
  76         if (Pstream::master())
  77         {
  78             LUBacksubstitute(*this, pivotIndices_, completeSourceSol);
  79
  80             sourceSol = typename Field<T>::subField
  81             (
  82                 completeSourceSol,
  83                 sourceSol.size()
  84             );
  85
  86             for
  87             (
  88                 int slave=Pstream::firstSlave();
  89                 slave<=Pstream::lastSlave();
  90                 slave++
  91             )
  92             {
  93                 OPstream::write
  94                 (
  95                     Pstream::blocking,
  96                     slave,
  97                     reinterpret_cast<const char*>
  98                     (
  99                         &(completeSourceSol[procOffsets_[slave]])
 100                     ),
 101                     (procOffsets_[slave + 1] - procOffsets_[slave])*sizeof(T)
 102                 );
 103             }
 104         }
 105         else
 106         {
 107             IPstream::read
 108             (
 109                 Pstream::blocking,
 110                 Pstream::masterNo(),
 111                 reinterpret_cast<char*>(sourceSol.begin()),
 112                 sourceSol.byteSize()
 113             );
 114         }
 115     }
 116     else
 117     {
 118         LUBacksubstitute(*this, pivotIndices_, sourceSol);
 119     }
 120 }
 121
 122
 123 // ************************************************************************* //