00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software: you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by 00013 the Free Software Foundation, either version 3 of the License, or 00014 (at your option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. 00023 00024 InClass 00025 Foam::Pstream 00026 00027 Description 00028 Combination-Reduction operation for a parallel run. The 00029 information from all nodes is collected on the master node, 00030 combined using the given combination function and the result is 00031 broadcast to all nodes 00032 00033 00034 \*---------------------------------------------------------------------------*/ 00035 00036 #ifndef PstreamCombineReduceOps_H 00037 #define PstreamCombineReduceOps_H 00038 00039 #include "Pstream.H" 00040 #include <OpenFOAM/ops.H> 00041 00042 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00043 00044 namespace Foam 00045 { 00046 00047 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00048 00049 template <class T, class CombineOp> 00050 void combineReduce 00051 ( 00052 const List<Pstream::commsStruct>& comms, 00053 T& Value, 00054 const CombineOp& cop 00055 ) 00056 { 00057 Pstream::combineGather(comms, Value, cop); 00058 Pstream::combineScatter(comms, Value); 00059 } 00060 00061 00062 template <class T, class CombineOp> 00063 void combineReduce(T& Value, const CombineOp& cop) 00064 { 00065 if (Pstream::nProcs() < Pstream::nProcsSimpleSum) 00066 { 00067 Pstream::combineGather(Pstream::linearCommunication(), Value, cop); 00068 Pstream::combineScatter(Pstream::linearCommunication(), Value); 00069 } 00070 else 00071 { 00072 Pstream::combineGather(Pstream::treeCommunication(), Value, cop); 00073 Pstream::combineScatter(Pstream::treeCommunication(), Value); 00074 } 00075 } 00076 00077 00078 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00079 00080 } // End namespace Foam 00081 00082 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00083 00084 #endif 00085 00086 // ************************ vim: set sw=4 sts=4 et: ************************ //
