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Tsqr_MessengerBase.hpp
00001 // @HEADER
00002 // ***********************************************************************
00003 //
00004 //                 Anasazi: Block Eigensolvers Package
00005 //                 Copyright (2010) Sandia Corporation
00006 //
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 //
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov)
00025 //
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #ifndef __TSQR_Tsqr_MessengerBase_hpp
00030 #define __TSQR_Tsqr_MessengerBase_hpp
00031 
00034 
00035 namespace TSQR {
00043   template< class Datum >
00044   class MessengerBase {
00045   public:
00046     virtual void 
00047     send (const Datum sendData[], 
00048     const int sendCount, 
00049     const int destProc, 
00050     const int tag) = 0;
00051 
00052     virtual void 
00053     recv (Datum recvData[], 
00054     const int recvCount, 
00055     const int srcProc, 
00056     const int tag) = 0;
00057 
00058     virtual void 
00059     swapData (const Datum sendData[], 
00060         Datum recvData[], 
00061         const int sendRecvCount, 
00062         const int destProc, 
00063         const int tag) = 0;
00064     
00065     virtual Datum 
00066     globalSum (const Datum& inDatum) = 0;
00067 
00068     virtual void
00069     globalVectorSum (const Datum inData[], 
00070          Datum outData[], 
00071          const int count) = 0;
00072 
00077     virtual Datum 
00078     globalMin (const Datum& inDatum) = 0;
00079 
00084     virtual Datum 
00085     globalMax (const Datum& inDatum) = 0;
00086 
00087     virtual void
00088     broadcast (Datum data[], 
00089          const int count,
00090          const int root) = 0;
00091 
00092     virtual int rank () const = 0;
00093     virtual int size () const = 0;
00094     virtual void barrier () const = 0;
00095   };
00096 
00097 } // namespace TSQR
00098 
00099 #endif // __TSQR_Tsqr_MessengerBase_hpp
00100 
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