| 2 |  | * @file Communicator.hpp | 
| 3 |  | * @author Charles Vardeman <cvardema.at.nd.edu> | 
| 4 |  | * @date 08/18/2010 | 
| 5 | – | * @time 11:56am | 
| 5 |  | * @version 1.0 | 
| 6 |  | * | 
| 7 |  | * @section LICENSE | 
| 41 |  | * | 
| 42 |  | * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005). | 
| 43 |  | * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006). | 
| 44 | < | * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008). | 
| 44 | > | * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 234107 (2008). | 
| 45 |  | * [4]  Kuang & Gezelter,  J. Chem. Phys. 133, 164101 (2010). | 
| 46 |  | * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011). | 
| 47 |  | */ | 
| 67 |  | template<class T> | 
| 68 |  | class MPITraits { | 
| 69 |  | public: | 
| 70 | < | static MPI::Datatype Type(); | 
| 70 | > | static MPI_Datatype Type(); | 
| 71 |  | static int Length() { return 1; }; | 
| 72 |  | }; | 
| 73 |  |  | 
| 74 | < | template<> inline MPI::Datatype MPITraits<int>::Type() { return MPI::INT; } | 
| 75 | < | template<> inline MPI::Datatype MPITraits<RealType>::Type() { return MPI::REALTYPE; } | 
| 74 | > | template<> inline MPI_Datatype MPITraits<int>::Type() { return MPI_INT; } | 
| 75 | > | template<> inline MPI_Datatype MPITraits<RealType>::Type() { return MPI_REALTYPE; } | 
| 76 |  |  | 
| 77 |  | template<class T, unsigned int Dim> | 
| 78 |  | class MPITraits< Vector<T, Dim> > { | 
| 79 |  | public: | 
| 80 | < | static MPI::Datatype Type() { return MPITraits<T>::Type(); } | 
| 80 | > | static MPI_Datatype Type() { return MPITraits<T>::Type(); } | 
| 81 |  | static int Length() {return Dim;} | 
| 82 |  | }; | 
| 83 |  |  | 
| 84 |  | template<class T> | 
| 85 |  | class MPITraits< Vector3<T> > { | 
| 86 |  | public: | 
| 87 | < | static MPI::Datatype Type() { return MPITraits<T>::Type(); } | 
| 87 | > | static MPI_Datatype Type() { return MPITraits<T>::Type(); } | 
| 88 |  | static int Length() {return 3;} | 
| 89 |  | }; | 
| 90 |  |  | 
| 91 | < | template<class T, unsigned int Row, unsigned int Col> | 
| 92 | < | class MPITraits< RectMatrix<T, Row, Col> > { | 
| 91 | > | template<class T, unsigned int R, unsigned int C> | 
| 92 | > | class MPITraits< RectMatrix<T, R, C> > { | 
| 93 |  | public: | 
| 94 | < | static MPI::Datatype Type() { return MPITraits<T>::Type(); } | 
| 95 | < | static int Length() {return Row * Col;} | 
| 94 | > | static MPI_Datatype Type() { return MPITraits<T>::Type(); } | 
| 95 | > | static int Length() {return R * C;} | 
| 96 |  | }; | 
| 97 |  |  | 
| 98 |  | template<class T> | 
| 99 |  | class MPITraits< SquareMatrix3<T> > { | 
| 100 |  | public: | 
| 101 | < | static MPI::Datatype Type() { return MPITraits<T>::Type(); } | 
| 101 | > | static MPI_Datatype Type() { return MPITraits<T>::Type(); } | 
| 102 |  | static int Length() {return 9;} | 
| 103 |  | }; | 
| 104 |  |  | 
| 109 |  |  | 
| 110 |  | Communicator<D>() { | 
| 111 |  |  | 
| 112 | < | int nProc = MPI::COMM_WORLD.Get_size(); | 
| 113 | < | int myRank = MPI::COMM_WORLD.Get_rank(); | 
| 112 | > | int nProc; | 
| 113 | > | int myRank; | 
| 114 | > |  | 
| 115 | > | MPI_Comm_size( MPI_COMM_WORLD, &nProc); | 
| 116 | > | MPI_Comm_rank( MPI_COMM_WORLD, &myRank); | 
| 117 |  |  | 
| 118 |  | int nColumnsMax = (int) sqrt(RealType(nProc)); | 
| 119 |  |  | 
| 122 |  | if (nProc % i == 0) nColumns = i; | 
| 123 |  | } | 
| 124 |  |  | 
| 125 | + | // int nRows = nProc / nColumns; | 
| 126 |  | rowIndex_ = myRank / nColumns; | 
| 127 |  | columnIndex_ = myRank % nColumns; | 
| 128 |  |  | 
| 129 |  | switch(D) { | 
| 130 |  | case Row : | 
| 131 | < | myComm = MPI::COMM_WORLD.Split(rowIndex_, 0); | 
| 131 | > | MPI_Comm_split(MPI_COMM_WORLD, rowIndex_, 0, &myComm); | 
| 132 | > | //  myComm = MPI::COMM_WORLD.Split(rowIndex_, 0); | 
| 133 |  | break; | 
| 134 |  | case Column: | 
| 135 | < | myComm = MPI::COMM_WORLD.Split(columnIndex_, 0); | 
| 135 | > | MPI_Comm_split(MPI_COMM_WORLD, columnIndex_, 0, &myComm); | 
| 136 | > | //myComm = MPI::COMM_WORLD.Split(columnIndex_, 0); | 
| 137 |  | break; | 
| 138 |  | case Global: | 
| 139 | < | myComm = MPI::COMM_WORLD.Split(myRank, 0); | 
| 139 | > | MPI_Comm_split(MPI_COMM_WORLD, myRank, 0, &myComm); | 
| 140 | > | //myComm = MPI::COMM_WORLD.Split(myRank, 0); | 
| 141 |  | } | 
| 142 |  |  | 
| 143 |  | } | 
| 144 |  |  | 
| 145 | < | MPI::Intracomm getComm() { return myComm; } | 
| 145 | > | MPI_Comm getComm() { return myComm; } | 
| 146 |  |  | 
| 147 |  | private: | 
| 148 |  | int rowIndex_; | 
| 149 |  | int columnIndex_; | 
| 150 | < | MPI::Intracomm myComm; | 
| 150 | > | MPI_Comm myComm; | 
| 151 |  | }; | 
| 152 |  |  | 
| 153 |  |  | 
| 155 |  | class Plan { | 
| 156 |  | public: | 
| 157 |  |  | 
| 158 | < | Plan<T>(MPI::Intracomm comm, int nObjects) { | 
| 159 | < | myComm = comm; | 
| 160 | < | int nCommProcs = myComm.Get_size(); | 
| 158 | > | Plan<T>(MPI_Comm comm, int nObjects) : myComm(comm) { | 
| 159 | > |  | 
| 160 | > | int nCommProcs; | 
| 161 | > | MPI_Comm_size( myComm, &nCommProcs ); | 
| 162 | > |  | 
| 163 | > | //int nCommProcs = myComm.Get_size(); | 
| 164 |  |  | 
| 165 |  | counts.resize(nCommProcs, 0); | 
| 166 |  | displacements.resize(nCommProcs, 0); | 
| 167 |  |  | 
| 168 |  | planSize_ = MPITraits<T>::Length() * nObjects; | 
| 169 |  |  | 
| 170 | < | myComm.Allgather(&planSize_, 1, MPI::INT, &counts[0], 1, MPI::INT); | 
| 170 | > | MPI_Allgather(&planSize_, 1, MPI_INT, &counts[0], 1, MPI_INT, myComm); | 
| 171 | > | //myComm.Allgather(&planSize_, 1, MPI_INT, &counts[0], 1, MPI_INT); | 
| 172 |  |  | 
| 173 |  | displacements[0] = 0; | 
| 174 |  | for (int i = 1; i < nCommProcs; i++) { | 
| 187 |  | // an assert would be helpful here to make sure the vectors are the | 
| 188 |  | // correct geometry | 
| 189 |  |  | 
| 190 | < | myComm.Allgatherv(&v1[0], | 
| 191 | < | planSize_, | 
| 192 | < | MPITraits<T>::Type(), | 
| 193 | < | &v2[0], | 
| 194 | < | &counts[0], | 
| 195 | < | &displacements[0], | 
| 196 | < | MPITraits<T>::Type()); | 
| 190 | > | MPI_Allgatherv(&v1[0], | 
| 191 | > | planSize_, | 
| 192 | > | MPITraits<T>::Type(), | 
| 193 | > | &v2[0], | 
| 194 | > | &counts[0], | 
| 195 | > | &displacements[0], | 
| 196 | > | MPITraits<T>::Type(), | 
| 197 | > | myComm); | 
| 198 | > | // myComm.Allgatherv(&v1[0], | 
| 199 | > | //                   planSize_, | 
| 200 | > | //                   MPITraits<T>::Type(), | 
| 201 | > | //                   &v2[0], | 
| 202 | > | //                   &counts[0], | 
| 203 | > | //                   &displacements[0], | 
| 204 | > | //                   MPITraits<T>::Type()); | 
| 205 |  | } | 
| 206 |  |  | 
| 207 |  | void scatter(vector<T>& v1, vector<T>& v2) { | 
| 208 |  | // an assert would be helpful here to make sure the vectors are the | 
| 209 |  | // correct geometry | 
| 210 |  |  | 
| 211 | < | myComm.Reduce_scatter(&v1[0], &v2[0], &counts[0], | 
| 212 | < | MPITraits<T>::Type(), MPI::SUM); | 
| 211 | > | MPI_Reduce_scatter(&v1[0], &v2[0], &counts[0], | 
| 212 | > | MPITraits<T>::Type(), MPI_SUM, myComm); | 
| 213 | > |  | 
| 214 | > | // myComm.Reduce_scatter(&v1[0], &v2[0], &counts[0], | 
| 215 | > | //                       MPITraits<T>::Type(), MPI::SUM); | 
| 216 |  | } | 
| 217 |  |  | 
| 218 |  | int getSize() { | 
| 224 |  | int size_; | 
| 225 |  | vector<int> counts; | 
| 226 |  | vector<int> displacements; | 
| 227 | < | MPI::Intracomm myComm; | 
| 227 | > | MPI_Comm myComm; | 
| 228 |  | }; | 
| 229 |  |  | 
| 230 |  | #endif |