Tpetra Matrix/Vector Services Version of the Day
Tpetra_MpiPlatform.hpp
00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 //          Tpetra: Templated Linear Algebra Services Package
00005 //                 Copyright (2008) 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 TPETRA_MPIPLATFORM_HPP
00030 #define TPETRA_MPIPLATFORM_HPP
00031 
00032 #include <Teuchos_DefaultMpiComm.hpp>
00033 #include <Teuchos_Describable.hpp>
00034 #include <Kokkos_DefaultNode.hpp>
00035 
00036 namespace Tpetra {
00037 
00039 
00044   template <class Node>
00045   class MpiPlatform : public Teuchos::Describable {
00046   private:
00047     MpiPlatform(const MpiPlatform<Node> &platform);
00048 
00049   protected: 
00051     RCP<Teuchos::MpiComm<int> > comm_;
00053     RCP<Node> node_;
00054   public:
00056     typedef Node NodeType;
00058 
00059 
00061     explicit MpiPlatform(const RCP<Node> &node) {
00062       node_ = node;
00063       comm_ = Teuchos::createMpiComm<int>(Teuchos::opaqueWrapper<MPI_Comm>(MPI_COMM_WORLD));
00064     }
00065 
00067     MpiPlatform(const RCP<Node> &node, const RCP<const Teuchos::OpaqueWrapper<MPI_Comm> > &rawMpiComm) {
00068       node_ = node;
00069       comm_ = Teuchos::createMpiComm<int>(rawMpiComm);
00070     }
00071 
00073     virtual ~MpiPlatform() {}
00074 
00076 
00078 
00079 
00081     RCP< const Comm<int> > getComm() const {
00082       return comm_; 
00083     }
00084 
00086     RCP<Node> getNode() const {
00087       return node_;
00088     }
00089 
00091   };
00092 
00093 
00094   template <>
00095   class MpiPlatform<Kokkos::DefaultNode::DefaultNodeType> : public Teuchos::Describable {
00096   private:
00097     MpiPlatform(const MpiPlatform<Kokkos::DefaultNode::DefaultNodeType> &platform);
00098 
00099   protected: 
00101     RCP<Teuchos::MpiComm<int> > comm_;
00103     RCP<Kokkos::DefaultNode::DefaultNodeType> dnode_;
00104   public:
00106     typedef Kokkos::DefaultNode::DefaultNodeType NodeType;
00108 
00109 
00111     MpiPlatform() {
00112       dnode_ = null;
00113       comm_ = Teuchos::createMpiComm<int>(Teuchos::opaqueWrapper<MPI_Comm>(MPI_COMM_WORLD));
00114     }
00115 
00117     explicit MpiPlatform(const RCP<Kokkos::DefaultNode::DefaultNodeType> &node) {
00118       dnode_ = node;
00119       comm_ = Teuchos::createMpiComm<int>(Teuchos::opaqueWrapper<MPI_Comm>(MPI_COMM_WORLD));
00120     }
00121 
00123     MpiPlatform(const RCP<Kokkos::DefaultNode::DefaultNodeType> &node, const RCP<const Teuchos::OpaqueWrapper<MPI_Comm> > &rawMpiComm) {
00124       dnode_ = node;
00125       comm_ = Teuchos::createMpiComm<int>(rawMpiComm);
00126     }
00127 
00129     virtual ~MpiPlatform() {}
00130 
00132 
00134 
00135 
00137     RCP< const Comm<int> > getComm() const {
00138       return comm_; 
00139     }
00140 
00142     RCP<Kokkos::DefaultNode::DefaultNodeType> getNode() const {
00143       RCP<Kokkos::DefaultNode::DefaultNodeType> def = dnode_;
00144       if (def == null) {
00145         def = Kokkos::DefaultNode::getDefaultNode(); 
00146       }
00147       return def;
00148     }
00149 
00151   };
00152 
00153 
00154 } // namespace Tpetra
00155 
00156 #endif // TPETRA_MPIPLATFORM_HPP
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