1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
7 -------------------------------------------------------------------------------
9 This file is part of OpenFOAM.
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.
16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 You should have received a copy of the GNU General Public License
22 along with OpenFOAM; if not, write to the Free Software Foundation,
23 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 Combination-Reduction operation for a parallel run. The
30 information from all nodes is collected on the master node,
31 combined using the given combination function and the result is
32 broadcast to all nodes
35 \*---------------------------------------------------------------------------*/
37 #ifndef PstreamCombineReduceOps_H
38 #define PstreamCombineReduceOps_H
43 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
48 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
50 template <class T, class CombineOp>
53 const List<Pstream::commsStruct>& comms,
58 Pstream::combineGather(comms, Value, cop);
59 Pstream::combineScatter(comms, Value);
63 template <class T, class CombineOp>
64 void combineReduce(T& Value, const CombineOp& cop)
66 if (Pstream::nProcs() < Pstream::nProcsSimpleSum)
68 Pstream::combineGather(Pstream::linearCommunication(), Value, cop);
69 Pstream::combineScatter(Pstream::linearCommunication(), Value);
73 Pstream::combineGather(Pstream::treeCommunication(), Value, cop);
74 Pstream::combineScatter(Pstream::treeCommunication(), Value);
79 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
81 } // End namespace Foam
83 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
87 // ************************************************************************* //