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00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2005 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 the 00013 Free Software Foundation; either version 2 of the License, or (at your 00014 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, write to the Free Software Foundation, 00023 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00024 00025 Class 00026 Pstream 00027 00028 Description 00029 Combination-Reduction operation for a parallel run. The 00030 information from all nodes is collected on the master node, 00031 combined using the given combination function and the result is 00032 broadcast to all nodes 00033 00034 00035 \*---------------------------------------------------------------------------*/ 00036 00037 #ifndef PstreamCombineReduceOps_H 00038 #define PstreamCombineReduceOps_H 00039 00040 #include "Pstream.H" 00041 #include "ops.H" 00042 00043 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00044 00045 namespace Foam 00046 { 00047 00048 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00049 00050 template <class T, class CombineOp> 00051 void combineReduce 00052 ( 00053 const List<Pstream::commsStruct>& comms, 00054 T& Value, 00055 const CombineOp& cop 00056 ) 00057 { 00058 Pstream::combineGather(comms, Value, cop); 00059 Pstream::combineScatter(comms, Value); 00060 } 00061 00062 00063 template <class T, class CombineOp> 00064 void combineReduce(T& Value, const CombineOp& cop) 00065 { 00066 if (Pstream::nProcs() < Pstream::nProcsSimpleSum) 00067 { 00068 Pstream::combineGather(Pstream::linearCommunication(), Value, cop); 00069 Pstream::combineScatter(Pstream::linearCommunication(), Value); 00070 } 00071 else 00072 { 00073 Pstream::combineGather(Pstream::treeCommunication(), Value, cop); 00074 Pstream::combineScatter(Pstream::treeCommunication(), Value); 00075 } 00076 } 00077 00078 00079 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00080 00081 } // End namespace Foam 00082 00083 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00084 00085 #endif 00086 00087 // ************************************************************************* //