| 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). |
| 45 |
< |
* [4] Vardeman & Gezelter, in progress (2009). |
| 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 |
|
*/ |
| 48 |
|
|
| 49 |
|
#ifndef PARALLEL_COMMUNICATOR_HPP |
| 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; |
| 125 |
> |
// int nRows = nProc / nColumns; |
| 126 |
|
rowIndex_ = myRank / nColumns; |
| 127 |
|
columnIndex_ = myRank % nColumns; |
| 128 |
|
|
| 126 |
– |
cerr << "rowIndex = " << rowIndex_ << "\t colIndex = " << columnIndex_ << "\n"; |
| 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 |
|
break; |
| 133 |
|
case Column: |
| 134 |
< |
myComm = MPI::COMM_WORLD.Split(columnIndex_, 0); |
| 134 |
> |
MPI_Comm_split(MPI_COMM_WORLD, columnIndex_, 0, &myComm); |
| 135 |
|
break; |
| 136 |
|
case Global: |
| 137 |
< |
myComm = MPI::COMM_WORLD.Split(myRank, 0); |
| 137 |
> |
MPI_Comm_split(MPI_COMM_WORLD, myRank, 0, &myComm); |
| 138 |
|
} |
| 139 |
|
|
| 140 |
|
} |
| 141 |
|
|
| 142 |
< |
MPI::Intracomm getComm() { return myComm; } |
| 142 |
> |
MPI_Comm getComm() { return myComm; } |
| 143 |
|
|
| 144 |
|
private: |
| 145 |
|
int rowIndex_; |
| 146 |
|
int columnIndex_; |
| 147 |
< |
MPI::Intracomm myComm; |
| 147 |
> |
MPI_Comm myComm; |
| 148 |
|
}; |
| 149 |
|
|
| 150 |
|
|
| 152 |
|
class Plan { |
| 153 |
|
public: |
| 154 |
|
|
| 155 |
< |
Plan<T>(MPI::Intracomm comm, int nObjects) { |
| 156 |
< |
myComm = comm; |
| 157 |
< |
int nCommProcs = myComm.Get_size(); |
| 155 |
> |
Plan<T>(MPI_Comm comm, int nObjects) : myComm(comm) { |
| 156 |
> |
|
| 157 |
> |
int nCommProcs; |
| 158 |
> |
MPI_Comm_size( myComm, &nCommProcs ); |
| 159 |
|
|
| 160 |
|
counts.resize(nCommProcs, 0); |
| 161 |
|
displacements.resize(nCommProcs, 0); |
| 162 |
|
|
| 163 |
|
planSize_ = MPITraits<T>::Length() * nObjects; |
| 164 |
|
|
| 165 |
< |
myComm.Allgather(&planSize_, 1, MPI::INT, &counts[0], 1, MPI::INT); |
| 165 |
> |
MPI_Allgather(&planSize_, 1, MPI_INT, &counts[0], 1, MPI_INT, myComm); |
| 166 |
|
|
| 167 |
|
displacements[0] = 0; |
| 168 |
|
for (int i = 1; i < nCommProcs; i++) { |
| 181 |
|
// an assert would be helpful here to make sure the vectors are the |
| 182 |
|
// correct geometry |
| 183 |
|
|
| 184 |
< |
myComm.Allgatherv(&v1[0], |
| 185 |
< |
planSize_, |
| 186 |
< |
MPITraits<T>::Type(), |
| 187 |
< |
&v2[0], |
| 188 |
< |
&counts[0], |
| 189 |
< |
&displacements[0], |
| 190 |
< |
MPITraits<T>::Type()); |
| 184 |
> |
MPI_Allgatherv(&v1[0], |
| 185 |
> |
planSize_, |
| 186 |
> |
MPITraits<T>::Type(), |
| 187 |
> |
&v2[0], |
| 188 |
> |
&counts[0], |
| 189 |
> |
&displacements[0], |
| 190 |
> |
MPITraits<T>::Type(), |
| 191 |
> |
myComm); |
| 192 |
|
} |
| 193 |
|
|
| 194 |
|
void scatter(vector<T>& v1, vector<T>& v2) { |
| 195 |
|
// an assert would be helpful here to make sure the vectors are the |
| 196 |
|
// correct geometry |
| 197 |
|
|
| 198 |
< |
myComm.Reduce_scatter(&v1[0], &v2[0], &counts[0], |
| 199 |
< |
MPITraits<T>::Type(), MPI::SUM); |
| 198 |
> |
MPI_Reduce_scatter(&v1[0], &v2[0], &counts[0], |
| 199 |
> |
MPITraits<T>::Type(), MPI_SUM, myComm); |
| 200 |
|
} |
| 201 |
|
|
| 202 |
|
int getSize() { |
| 208 |
|
int size_; |
| 209 |
|
vector<int> counts; |
| 210 |
|
vector<int> displacements; |
| 211 |
< |
MPI::Intracomm myComm; |
| 211 |
> |
MPI_Comm myComm; |
| 212 |
|
}; |
| 213 |
|
|
| 214 |
|
#endif |