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/** |
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* @file ForceDecomposition.cpp |
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* @author Charles Vardeman <cvardema.at.nd.edu> |
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* @date 08/18/2010 |
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* @time 11:56am |
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* @version 1.0 |
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/* |
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* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved. |
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* |
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* @section LICENSE |
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* Copyright (c) 2010 The University of Notre Dame. All Rights Reserved. |
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* |
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* The University of Notre Dame grants you ("Licensee") a |
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* non-exclusive, royalty free, license to use, modify and |
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* redistribute this software in source and binary code form, provided |
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* [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008). |
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* [4] Vardeman & Gezelter, in progress (2009). |
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*/ |
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#include "parallel/ForceMatrixDecomposition.hpp" |
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#include "math/SquareMatrix3.hpp" |
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#include "nonbonded/NonBondedInteraction.hpp" |
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#include "brains/SnapshotManager.hpp" |
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#include "brains/PairList.hpp" |
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|
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using namespace std; |
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namespace OpenMD { |
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|
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ForceMatrixDecomposition::ForceMatrixDecomposition(SimInfo* info, InteractionManager* iMan) : ForceDecomposition(info, iMan) { |
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|
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/* -*- c++ -*- */ |
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#include "config.h" |
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#include <stdlib.h> |
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// In a parallel computation, row and colum scans must visit all |
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// surrounding cells (not just the 14 upper triangular blocks that |
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// are used when the processor can see all pairs) |
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#ifdef IS_MPI |
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#include <mpi.h> |
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#endif |
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cellOffsets_.clear(); |
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cellOffsets_.push_back( Vector3i(-1,-1,-1) ); |
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cellOffsets_.push_back( Vector3i( 0,-1,-1) ); |
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cellOffsets_.push_back( Vector3i( 1,-1,-1) ); |
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cellOffsets_.push_back( Vector3i(-1, 0,-1) ); |
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cellOffsets_.push_back( Vector3i( 0, 0,-1) ); |
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cellOffsets_.push_back( Vector3i( 1, 0,-1) ); |
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cellOffsets_.push_back( Vector3i(-1, 1,-1) ); |
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cellOffsets_.push_back( Vector3i( 0, 1,-1) ); |
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cellOffsets_.push_back( Vector3i( 1, 1,-1) ); |
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cellOffsets_.push_back( Vector3i(-1,-1, 0) ); |
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cellOffsets_.push_back( Vector3i( 0,-1, 0) ); |
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cellOffsets_.push_back( Vector3i( 1,-1, 0) ); |
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cellOffsets_.push_back( Vector3i(-1, 0, 0) ); |
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cellOffsets_.push_back( Vector3i( 0, 0, 0) ); |
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cellOffsets_.push_back( Vector3i( 1, 0, 0) ); |
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cellOffsets_.push_back( Vector3i(-1, 1, 0) ); |
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cellOffsets_.push_back( Vector3i( 0, 1, 0) ); |
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cellOffsets_.push_back( Vector3i( 1, 1, 0) ); |
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cellOffsets_.push_back( Vector3i(-1,-1, 1) ); |
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cellOffsets_.push_back( Vector3i( 0,-1, 1) ); |
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cellOffsets_.push_back( Vector3i( 1,-1, 1) ); |
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cellOffsets_.push_back( Vector3i(-1, 0, 1) ); |
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cellOffsets_.push_back( Vector3i( 0, 0, 1) ); |
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cellOffsets_.push_back( Vector3i( 1, 0, 1) ); |
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cellOffsets_.push_back( Vector3i(-1, 1, 1) ); |
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cellOffsets_.push_back( Vector3i( 0, 1, 1) ); |
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cellOffsets_.push_back( Vector3i( 1, 1, 1) ); |
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#endif |
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} |
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|
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#include <iostream> |
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#include <vector> |
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#include <algorithm> |
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#include <cmath> |
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#include "parallel/ForceDecomposition.hpp" |
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|
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/** |
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* distributeInitialData is essentially a copy of the older fortran |
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* SimulationSetup |
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*/ |
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void ForceMatrixDecomposition::distributeInitialData() { |
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snap_ = sman_->getCurrentSnapshot(); |
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storageLayout_ = sman_->getStorageLayout(); |
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ff_ = info_->getForceField(); |
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nLocal_ = snap_->getNumberOfAtoms(); |
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|
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nGroups_ = info_->getNLocalCutoffGroups(); |
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// gather the information for atomtype IDs (atids): |
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idents = info_->getIdentArray(); |
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AtomLocalToGlobal = info_->getGlobalAtomIndices(); |
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cgLocalToGlobal = info_->getGlobalGroupIndices(); |
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vector<int> globalGroupMembership = info_->getGlobalGroupMembership(); |
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|
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using namespace std; |
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using namespace OpenMD; |
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massFactors = info_->getMassFactors(); |
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|
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//__static |
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PairList* excludes = info_->getExcludedInteractions(); |
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PairList* oneTwo = info_->getOneTwoInteractions(); |
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PairList* oneThree = info_->getOneThreeInteractions(); |
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PairList* oneFour = info_->getOneFourInteractions(); |
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|
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#ifdef IS_MPI |
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static vector<MPI:Comm> communictors; |
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#endif |
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|
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MPI::Intracomm row = rowComm.getComm(); |
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MPI::Intracomm col = colComm.getComm(); |
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|
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//____ MPITypeTraits |
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template<typename T> |
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struct MPITypeTraits; |
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AtomPlanIntRow = new Plan<int>(row, nLocal_); |
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AtomPlanRealRow = new Plan<RealType>(row, nLocal_); |
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AtomPlanVectorRow = new Plan<Vector3d>(row, nLocal_); |
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AtomPlanMatrixRow = new Plan<Mat3x3d>(row, nLocal_); |
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AtomPlanPotRow = new Plan<potVec>(row, nLocal_); |
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|
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#ifdef IS_MPI |
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template<> |
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struct MPITypeTraits<RealType> { |
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static const MPI::Datatype datatype; |
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}; |
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const MPI_Datatype MPITypeTraits<RealType>::datatype = MY_MPI_REAL; |
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AtomPlanIntColumn = new Plan<int>(col, nLocal_); |
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AtomPlanRealColumn = new Plan<RealType>(col, nLocal_); |
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AtomPlanVectorColumn = new Plan<Vector3d>(col, nLocal_); |
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AtomPlanMatrixColumn = new Plan<Mat3x3d>(col, nLocal_); |
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AtomPlanPotColumn = new Plan<potVec>(col, nLocal_); |
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|
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template<> |
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struct MPITypeTraits<int> { |
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static const MPI::Datatype datatype; |
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}; |
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const MPI::Datatype MPITypeTraits<int>::datatype = MPI_INT; |
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#endif |
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cgPlanIntRow = new Plan<int>(row, nGroups_); |
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cgPlanVectorRow = new Plan<Vector3d>(row, nGroups_); |
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cgPlanIntColumn = new Plan<int>(col, nGroups_); |
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cgPlanVectorColumn = new Plan<Vector3d>(col, nGroups_); |
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|
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/** |
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* Constructor for ForceDecomposition Parallel Decomposition Method |
| 136 |
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* Will try to construct a symmetric grid of processors. Ideally, the |
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* number of processors will be a square ex: 4, 9, 16, 25. |
| 95 |
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* |
| 96 |
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*/ |
| 134 |
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nAtomsInRow_ = AtomPlanIntRow->getSize(); |
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> |
nAtomsInCol_ = AtomPlanIntColumn->getSize(); |
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nGroupsInRow_ = cgPlanIntRow->getSize(); |
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> |
nGroupsInCol_ = cgPlanIntColumn->getSize(); |
| 138 |
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|
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ForceDecomposition::ForceDecomposition() { |
| 139 |
> |
// Modify the data storage objects with the correct layouts and sizes: |
| 140 |
> |
atomRowData.resize(nAtomsInRow_); |
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atomRowData.setStorageLayout(storageLayout_); |
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> |
atomColData.resize(nAtomsInCol_); |
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> |
atomColData.setStorageLayout(storageLayout_); |
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> |
cgRowData.resize(nGroupsInRow_); |
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cgRowData.setStorageLayout(DataStorage::dslPosition); |
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> |
cgColData.resize(nGroupsInCol_); |
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> |
cgColData.setStorageLayout(DataStorage::dslPosition); |
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> |
|
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> |
identsRow.resize(nAtomsInRow_); |
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> |
identsCol.resize(nAtomsInCol_); |
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|
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AtomPlanIntRow->gather(idents, identsRow); |
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AtomPlanIntColumn->gather(idents, identsCol); |
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|
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// allocate memory for the parallel objects |
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atypesRow.resize(nAtomsInRow_); |
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> |
atypesCol.resize(nAtomsInCol_); |
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|
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#ifdef IS_MPI |
| 160 |
< |
int nProcs = MPI::COMM_WORLD.Get_size(); |
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int worldRank = MPI::COMM_WORLD.Get_rank(); |
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> |
for (int i = 0; i < nAtomsInRow_; i++) |
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atypesRow[i] = ff_->getAtomType(identsRow[i]); |
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for (int i = 0; i < nAtomsInCol_; i++) |
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atypesCol[i] = ff_->getAtomType(identsCol[i]); |
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|
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pot_row.resize(nAtomsInRow_); |
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pot_col.resize(nAtomsInCol_); |
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|
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AtomRowToGlobal.resize(nAtomsInRow_); |
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AtomColToGlobal.resize(nAtomsInCol_); |
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AtomPlanIntRow->gather(AtomLocalToGlobal, AtomRowToGlobal); |
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AtomPlanIntColumn->gather(AtomLocalToGlobal, AtomColToGlobal); |
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|
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cgRowToGlobal.resize(nGroupsInRow_); |
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cgColToGlobal.resize(nGroupsInCol_); |
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cgPlanIntRow->gather(cgLocalToGlobal, cgRowToGlobal); |
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cgPlanIntColumn->gather(cgLocalToGlobal, cgColToGlobal); |
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|
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massFactorsRow.resize(nAtomsInRow_); |
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massFactorsCol.resize(nAtomsInCol_); |
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AtomPlanRealRow->gather(massFactors, massFactorsRow); |
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AtomPlanRealColumn->gather(massFactors, massFactorsCol); |
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|
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groupListRow_.clear(); |
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groupListRow_.resize(nGroupsInRow_); |
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for (int i = 0; i < nGroupsInRow_; i++) { |
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int gid = cgRowToGlobal[i]; |
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for (int j = 0; j < nAtomsInRow_; j++) { |
| 187 |
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int aid = AtomRowToGlobal[j]; |
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if (globalGroupMembership[aid] == gid) |
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groupListRow_[i].push_back(j); |
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> |
} |
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> |
} |
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> |
|
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> |
groupListCol_.clear(); |
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> |
groupListCol_.resize(nGroupsInCol_); |
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> |
for (int i = 0; i < nGroupsInCol_; i++) { |
| 196 |
> |
int gid = cgColToGlobal[i]; |
| 197 |
> |
for (int j = 0; j < nAtomsInCol_; j++) { |
| 198 |
> |
int aid = AtomColToGlobal[j]; |
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> |
if (globalGroupMembership[aid] == gid) |
| 200 |
> |
groupListCol_[i].push_back(j); |
| 201 |
> |
} |
| 202 |
> |
} |
| 203 |
> |
|
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> |
excludesForAtom.clear(); |
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> |
excludesForAtom.resize(nAtomsInRow_); |
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> |
toposForAtom.clear(); |
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> |
toposForAtom.resize(nAtomsInRow_); |
| 208 |
> |
topoDist.clear(); |
| 209 |
> |
topoDist.resize(nAtomsInRow_); |
| 210 |
> |
for (int i = 0; i < nAtomsInRow_; i++) { |
| 211 |
> |
int iglob = AtomRowToGlobal[i]; |
| 212 |
> |
|
| 213 |
> |
for (int j = 0; j < nAtomsInCol_; j++) { |
| 214 |
> |
int jglob = AtomColToGlobal[j]; |
| 215 |
> |
|
| 216 |
> |
if (excludes->hasPair(iglob, jglob)) |
| 217 |
> |
excludesForAtom[i].push_back(j); |
| 218 |
> |
|
| 219 |
> |
if (oneTwo->hasPair(iglob, jglob)) { |
| 220 |
> |
toposForAtom[i].push_back(j); |
| 221 |
> |
topoDist[i].push_back(1); |
| 222 |
> |
} else { |
| 223 |
> |
if (oneThree->hasPair(iglob, jglob)) { |
| 224 |
> |
toposForAtom[i].push_back(j); |
| 225 |
> |
topoDist[i].push_back(2); |
| 226 |
> |
} else { |
| 227 |
> |
if (oneFour->hasPair(iglob, jglob)) { |
| 228 |
> |
toposForAtom[i].push_back(j); |
| 229 |
> |
topoDist[i].push_back(3); |
| 230 |
> |
} |
| 231 |
> |
} |
| 232 |
> |
} |
| 233 |
> |
} |
| 234 |
> |
} |
| 235 |
> |
|
| 236 |
|
#endif |
| 237 |
|
|
| 238 |
< |
// First time through, construct column stride. |
| 239 |
< |
if (communicators.size() == 0) |
| 240 |
< |
{ |
| 241 |
< |
int nColumnsMax = (int) round(sqrt((float) nProcs)); |
| 242 |
< |
for (int i = 0; i < nProcs; ++i) |
| 243 |
< |
{ |
| 244 |
< |
if (nProcs%i==0) nColumns=i; |
| 238 |
> |
// allocate memory for the parallel objects |
| 239 |
> |
atypesLocal.resize(nLocal_); |
| 240 |
> |
|
| 241 |
> |
for (int i = 0; i < nLocal_; i++) |
| 242 |
> |
atypesLocal[i] = ff_->getAtomType(idents[i]); |
| 243 |
> |
|
| 244 |
> |
groupList_.clear(); |
| 245 |
> |
groupList_.resize(nGroups_); |
| 246 |
> |
for (int i = 0; i < nGroups_; i++) { |
| 247 |
> |
int gid = cgLocalToGlobal[i]; |
| 248 |
> |
for (int j = 0; j < nLocal_; j++) { |
| 249 |
> |
int aid = AtomLocalToGlobal[j]; |
| 250 |
> |
if (globalGroupMembership[aid] == gid) { |
| 251 |
> |
groupList_[i].push_back(j); |
| 252 |
> |
} |
| 253 |
> |
} |
| 254 |
|
} |
| 255 |
|
|
| 256 |
< |
int nRows = nProcs/nColumns; |
| 257 |
< |
myRank_ = (int) worldRank%nColumns; |
| 258 |
< |
} |
| 259 |
< |
else |
| 260 |
< |
{ |
| 261 |
< |
myRank_ = myRank/nColumns; |
| 120 |
< |
} |
| 121 |
< |
MPI::Comm newComm = MPI:COMM_WORLD.Split(myRank_,0); |
| 122 |
< |
|
| 123 |
< |
isColumn_ = false; |
| 124 |
< |
|
| 125 |
< |
} |
| 256 |
> |
excludesForAtom.clear(); |
| 257 |
> |
excludesForAtom.resize(nLocal_); |
| 258 |
> |
toposForAtom.clear(); |
| 259 |
> |
toposForAtom.resize(nLocal_); |
| 260 |
> |
topoDist.clear(); |
| 261 |
> |
topoDist.resize(nLocal_); |
| 262 |
|
|
| 263 |
< |
ForceDecomposition::gather(sendbuf, receivebuf){ |
| 264 |
< |
communicators(myIndex_).Allgatherv(); |
| 129 |
< |
} |
| 263 |
> |
for (int i = 0; i < nLocal_; i++) { |
| 264 |
> |
int iglob = AtomLocalToGlobal[i]; |
| 265 |
|
|
| 266 |
+ |
for (int j = 0; j < nLocal_; j++) { |
| 267 |
+ |
int jglob = AtomLocalToGlobal[j]; |
| 268 |
|
|
| 269 |
+ |
if (excludes->hasPair(iglob, jglob)) |
| 270 |
+ |
excludesForAtom[i].push_back(j); |
| 271 |
+ |
|
| 272 |
+ |
if (oneTwo->hasPair(iglob, jglob)) { |
| 273 |
+ |
toposForAtom[i].push_back(j); |
| 274 |
+ |
topoDist[i].push_back(1); |
| 275 |
+ |
} else { |
| 276 |
+ |
if (oneThree->hasPair(iglob, jglob)) { |
| 277 |
+ |
toposForAtom[i].push_back(j); |
| 278 |
+ |
topoDist[i].push_back(2); |
| 279 |
+ |
} else { |
| 280 |
+ |
if (oneFour->hasPair(iglob, jglob)) { |
| 281 |
+ |
toposForAtom[i].push_back(j); |
| 282 |
+ |
topoDist[i].push_back(3); |
| 283 |
+ |
} |
| 284 |
+ |
} |
| 285 |
+ |
} |
| 286 |
+ |
} |
| 287 |
+ |
} |
| 288 |
+ |
|
| 289 |
+ |
createGtypeCutoffMap(); |
| 290 |
|
|
| 291 |
< |
ForceDecomposition::scatter(sbuffer, rbuffer){ |
| 292 |
< |
communicators(myIndex_).Reduce_scatter(sbuffer, recevbuf. recvcounts, MPI::DOUBLE, MPI::SUM); |
| 293 |
< |
} |
| 291 |
> |
} |
| 292 |
> |
|
| 293 |
> |
void ForceMatrixDecomposition::createGtypeCutoffMap() { |
| 294 |
> |
|
| 295 |
> |
RealType tol = 1e-6; |
| 296 |
> |
largestRcut_ = 0.0; |
| 297 |
> |
RealType rc; |
| 298 |
> |
int atid; |
| 299 |
> |
set<AtomType*> atypes = info_->getSimulatedAtomTypes(); |
| 300 |
> |
|
| 301 |
> |
map<int, RealType> atypeCutoff; |
| 302 |
> |
|
| 303 |
> |
for (set<AtomType*>::iterator at = atypes.begin(); |
| 304 |
> |
at != atypes.end(); ++at){ |
| 305 |
> |
atid = (*at)->getIdent(); |
| 306 |
> |
if (userChoseCutoff_) |
| 307 |
> |
atypeCutoff[atid] = userCutoff_; |
| 308 |
> |
else |
| 309 |
> |
atypeCutoff[atid] = interactionMan_->getSuggestedCutoffRadius(*at); |
| 310 |
> |
} |
| 311 |
> |
|
| 312 |
> |
vector<RealType> gTypeCutoffs; |
| 313 |
> |
// first we do a single loop over the cutoff groups to find the |
| 314 |
> |
// largest cutoff for any atypes present in this group. |
| 315 |
> |
#ifdef IS_MPI |
| 316 |
> |
vector<RealType> groupCutoffRow(nGroupsInRow_, 0.0); |
| 317 |
> |
groupRowToGtype.resize(nGroupsInRow_); |
| 318 |
> |
for (int cg1 = 0; cg1 < nGroupsInRow_; cg1++) { |
| 319 |
> |
vector<int> atomListRow = getAtomsInGroupRow(cg1); |
| 320 |
> |
for (vector<int>::iterator ia = atomListRow.begin(); |
| 321 |
> |
ia != atomListRow.end(); ++ia) { |
| 322 |
> |
int atom1 = (*ia); |
| 323 |
> |
atid = identsRow[atom1]; |
| 324 |
> |
if (atypeCutoff[atid] > groupCutoffRow[cg1]) { |
| 325 |
> |
groupCutoffRow[cg1] = atypeCutoff[atid]; |
| 326 |
> |
} |
| 327 |
> |
} |
| 328 |
|
|
| 329 |
+ |
bool gTypeFound = false; |
| 330 |
+ |
for (int gt = 0; gt < gTypeCutoffs.size(); gt++) { |
| 331 |
+ |
if (abs(groupCutoffRow[cg1] - gTypeCutoffs[gt]) < tol) { |
| 332 |
+ |
groupRowToGtype[cg1] = gt; |
| 333 |
+ |
gTypeFound = true; |
| 334 |
+ |
} |
| 335 |
+ |
} |
| 336 |
+ |
if (!gTypeFound) { |
| 337 |
+ |
gTypeCutoffs.push_back( groupCutoffRow[cg1] ); |
| 338 |
+ |
groupRowToGtype[cg1] = gTypeCutoffs.size() - 1; |
| 339 |
+ |
} |
| 340 |
+ |
|
| 341 |
+ |
} |
| 342 |
+ |
vector<RealType> groupCutoffCol(nGroupsInCol_, 0.0); |
| 343 |
+ |
groupColToGtype.resize(nGroupsInCol_); |
| 344 |
+ |
for (int cg2 = 0; cg2 < nGroupsInCol_; cg2++) { |
| 345 |
+ |
vector<int> atomListCol = getAtomsInGroupColumn(cg2); |
| 346 |
+ |
for (vector<int>::iterator jb = atomListCol.begin(); |
| 347 |
+ |
jb != atomListCol.end(); ++jb) { |
| 348 |
+ |
int atom2 = (*jb); |
| 349 |
+ |
atid = identsCol[atom2]; |
| 350 |
+ |
if (atypeCutoff[atid] > groupCutoffCol[cg2]) { |
| 351 |
+ |
groupCutoffCol[cg2] = atypeCutoff[atid]; |
| 352 |
+ |
} |
| 353 |
+ |
} |
| 354 |
+ |
bool gTypeFound = false; |
| 355 |
+ |
for (int gt = 0; gt < gTypeCutoffs.size(); gt++) { |
| 356 |
+ |
if (abs(groupCutoffCol[cg2] - gTypeCutoffs[gt]) < tol) { |
| 357 |
+ |
groupColToGtype[cg2] = gt; |
| 358 |
+ |
gTypeFound = true; |
| 359 |
+ |
} |
| 360 |
+ |
} |
| 361 |
+ |
if (!gTypeFound) { |
| 362 |
+ |
gTypeCutoffs.push_back( groupCutoffCol[cg2] ); |
| 363 |
+ |
groupColToGtype[cg2] = gTypeCutoffs.size() - 1; |
| 364 |
+ |
} |
| 365 |
+ |
} |
| 366 |
+ |
#else |
| 367 |
|
|
| 368 |
+ |
vector<RealType> groupCutoff(nGroups_, 0.0); |
| 369 |
+ |
groupToGtype.resize(nGroups_); |
| 370 |
+ |
for (int cg1 = 0; cg1 < nGroups_; cg1++) { |
| 371 |
+ |
groupCutoff[cg1] = 0.0; |
| 372 |
+ |
vector<int> atomList = getAtomsInGroupRow(cg1); |
| 373 |
+ |
for (vector<int>::iterator ia = atomList.begin(); |
| 374 |
+ |
ia != atomList.end(); ++ia) { |
| 375 |
+ |
int atom1 = (*ia); |
| 376 |
+ |
atid = idents[atom1]; |
| 377 |
+ |
if (atypeCutoff[atid] > groupCutoff[cg1]) |
| 378 |
+ |
groupCutoff[cg1] = atypeCutoff[atid]; |
| 379 |
+ |
} |
| 380 |
+ |
|
| 381 |
+ |
bool gTypeFound = false; |
| 382 |
+ |
for (int gt = 0; gt < gTypeCutoffs.size(); gt++) { |
| 383 |
+ |
if (abs(groupCutoff[cg1] - gTypeCutoffs[gt]) < tol) { |
| 384 |
+ |
groupToGtype[cg1] = gt; |
| 385 |
+ |
gTypeFound = true; |
| 386 |
+ |
} |
| 387 |
+ |
} |
| 388 |
+ |
if (!gTypeFound) { |
| 389 |
+ |
gTypeCutoffs.push_back( groupCutoff[cg1] ); |
| 390 |
+ |
groupToGtype[cg1] = gTypeCutoffs.size() - 1; |
| 391 |
+ |
} |
| 392 |
+ |
} |
| 393 |
+ |
#endif |
| 394 |
+ |
|
| 395 |
+ |
// Now we find the maximum group cutoff value present in the simulation |
| 396 |
+ |
|
| 397 |
+ |
RealType groupMax = *max_element(gTypeCutoffs.begin(), |
| 398 |
+ |
gTypeCutoffs.end()); |
| 399 |
+ |
|
| 400 |
+ |
#ifdef IS_MPI |
| 401 |
+ |
MPI::COMM_WORLD.Allreduce(&groupMax, &groupMax, 1, MPI::REALTYPE, |
| 402 |
+ |
MPI::MAX); |
| 403 |
+ |
#endif |
| 404 |
+ |
|
| 405 |
+ |
RealType tradRcut = groupMax; |
| 406 |
+ |
|
| 407 |
+ |
for (int i = 0; i < gTypeCutoffs.size(); i++) { |
| 408 |
+ |
for (int j = 0; j < gTypeCutoffs.size(); j++) { |
| 409 |
+ |
RealType thisRcut; |
| 410 |
+ |
switch(cutoffPolicy_) { |
| 411 |
+ |
case TRADITIONAL: |
| 412 |
+ |
thisRcut = tradRcut; |
| 413 |
+ |
break; |
| 414 |
+ |
case MIX: |
| 415 |
+ |
thisRcut = 0.5 * (gTypeCutoffs[i] + gTypeCutoffs[j]); |
| 416 |
+ |
break; |
| 417 |
+ |
case MAX: |
| 418 |
+ |
thisRcut = max(gTypeCutoffs[i], gTypeCutoffs[j]); |
| 419 |
+ |
break; |
| 420 |
+ |
default: |
| 421 |
+ |
sprintf(painCave.errMsg, |
| 422 |
+ |
"ForceMatrixDecomposition::createGtypeCutoffMap " |
| 423 |
+ |
"hit an unknown cutoff policy!\n"); |
| 424 |
+ |
painCave.severity = OPENMD_ERROR; |
| 425 |
+ |
painCave.isFatal = 1; |
| 426 |
+ |
simError(); |
| 427 |
+ |
break; |
| 428 |
+ |
} |
| 429 |
+ |
|
| 430 |
+ |
pair<int,int> key = make_pair(i,j); |
| 431 |
+ |
gTypeCutoffMap[key].first = thisRcut; |
| 432 |
+ |
if (thisRcut > largestRcut_) largestRcut_ = thisRcut; |
| 433 |
+ |
gTypeCutoffMap[key].second = thisRcut*thisRcut; |
| 434 |
+ |
gTypeCutoffMap[key].third = pow(thisRcut + skinThickness_, 2); |
| 435 |
+ |
// sanity check |
| 436 |
+ |
|
| 437 |
+ |
if (userChoseCutoff_) { |
| 438 |
+ |
if (abs(gTypeCutoffMap[key].first - userCutoff_) > 0.0001) { |
| 439 |
+ |
sprintf(painCave.errMsg, |
| 440 |
+ |
"ForceMatrixDecomposition::createGtypeCutoffMap " |
| 441 |
+ |
"user-specified rCut (%lf) does not match computed group Cutoff\n", userCutoff_); |
| 442 |
+ |
painCave.severity = OPENMD_ERROR; |
| 443 |
+ |
painCave.isFatal = 1; |
| 444 |
+ |
simError(); |
| 445 |
+ |
} |
| 446 |
+ |
} |
| 447 |
+ |
} |
| 448 |
+ |
} |
| 449 |
+ |
} |
| 450 |
+ |
|
| 451 |
+ |
|
| 452 |
+ |
groupCutoffs ForceMatrixDecomposition::getGroupCutoffs(int cg1, int cg2) { |
| 453 |
+ |
int i, j; |
| 454 |
+ |
#ifdef IS_MPI |
| 455 |
+ |
i = groupRowToGtype[cg1]; |
| 456 |
+ |
j = groupColToGtype[cg2]; |
| 457 |
+ |
#else |
| 458 |
+ |
i = groupToGtype[cg1]; |
| 459 |
+ |
j = groupToGtype[cg2]; |
| 460 |
+ |
#endif |
| 461 |
+ |
return gTypeCutoffMap[make_pair(i,j)]; |
| 462 |
+ |
} |
| 463 |
+ |
|
| 464 |
+ |
int ForceMatrixDecomposition::getTopologicalDistance(int atom1, int atom2) { |
| 465 |
+ |
for (int j = 0; j < toposForAtom[atom1].size(); j++) { |
| 466 |
+ |
if (toposForAtom[atom1][j] == atom2) |
| 467 |
+ |
return topoDist[atom1][j]; |
| 468 |
+ |
} |
| 469 |
+ |
return 0; |
| 470 |
+ |
} |
| 471 |
+ |
|
| 472 |
+ |
void ForceMatrixDecomposition::zeroWorkArrays() { |
| 473 |
+ |
pairwisePot = 0.0; |
| 474 |
+ |
embeddingPot = 0.0; |
| 475 |
+ |
|
| 476 |
+ |
#ifdef IS_MPI |
| 477 |
+ |
if (storageLayout_ & DataStorage::dslForce) { |
| 478 |
+ |
fill(atomRowData.force.begin(), atomRowData.force.end(), V3Zero); |
| 479 |
+ |
fill(atomColData.force.begin(), atomColData.force.end(), V3Zero); |
| 480 |
+ |
} |
| 481 |
+ |
|
| 482 |
+ |
if (storageLayout_ & DataStorage::dslTorque) { |
| 483 |
+ |
fill(atomRowData.torque.begin(), atomRowData.torque.end(), V3Zero); |
| 484 |
+ |
fill(atomColData.torque.begin(), atomColData.torque.end(), V3Zero); |
| 485 |
+ |
} |
| 486 |
+ |
|
| 487 |
+ |
fill(pot_row.begin(), pot_row.end(), |
| 488 |
+ |
Vector<RealType, N_INTERACTION_FAMILIES> (0.0)); |
| 489 |
+ |
|
| 490 |
+ |
fill(pot_col.begin(), pot_col.end(), |
| 491 |
+ |
Vector<RealType, N_INTERACTION_FAMILIES> (0.0)); |
| 492 |
+ |
|
| 493 |
+ |
if (storageLayout_ & DataStorage::dslParticlePot) { |
| 494 |
+ |
fill(atomRowData.particlePot.begin(), atomRowData.particlePot.end(), |
| 495 |
+ |
0.0); |
| 496 |
+ |
fill(atomColData.particlePot.begin(), atomColData.particlePot.end(), |
| 497 |
+ |
0.0); |
| 498 |
+ |
} |
| 499 |
+ |
|
| 500 |
+ |
if (storageLayout_ & DataStorage::dslDensity) { |
| 501 |
+ |
fill(atomRowData.density.begin(), atomRowData.density.end(), 0.0); |
| 502 |
+ |
fill(atomColData.density.begin(), atomColData.density.end(), 0.0); |
| 503 |
+ |
} |
| 504 |
+ |
|
| 505 |
+ |
if (storageLayout_ & DataStorage::dslFunctional) { |
| 506 |
+ |
fill(atomRowData.functional.begin(), atomRowData.functional.end(), |
| 507 |
+ |
0.0); |
| 508 |
+ |
fill(atomColData.functional.begin(), atomColData.functional.end(), |
| 509 |
+ |
0.0); |
| 510 |
+ |
} |
| 511 |
+ |
|
| 512 |
+ |
if (storageLayout_ & DataStorage::dslFunctionalDerivative) { |
| 513 |
+ |
fill(atomRowData.functionalDerivative.begin(), |
| 514 |
+ |
atomRowData.functionalDerivative.end(), 0.0); |
| 515 |
+ |
fill(atomColData.functionalDerivative.begin(), |
| 516 |
+ |
atomColData.functionalDerivative.end(), 0.0); |
| 517 |
+ |
} |
| 518 |
+ |
|
| 519 |
+ |
if (storageLayout_ & DataStorage::dslSkippedCharge) { |
| 520 |
+ |
fill(atomRowData.skippedCharge.begin(), |
| 521 |
+ |
atomRowData.skippedCharge.end(), 0.0); |
| 522 |
+ |
fill(atomColData.skippedCharge.begin(), |
| 523 |
+ |
atomColData.skippedCharge.end(), 0.0); |
| 524 |
+ |
} |
| 525 |
+ |
|
| 526 |
+ |
#endif |
| 527 |
+ |
// even in parallel, we need to zero out the local arrays: |
| 528 |
+ |
|
| 529 |
+ |
if (storageLayout_ & DataStorage::dslParticlePot) { |
| 530 |
+ |
fill(snap_->atomData.particlePot.begin(), |
| 531 |
+ |
snap_->atomData.particlePot.end(), 0.0); |
| 532 |
+ |
} |
| 533 |
+ |
|
| 534 |
+ |
if (storageLayout_ & DataStorage::dslDensity) { |
| 535 |
+ |
fill(snap_->atomData.density.begin(), |
| 536 |
+ |
snap_->atomData.density.end(), 0.0); |
| 537 |
+ |
} |
| 538 |
+ |
if (storageLayout_ & DataStorage::dslFunctional) { |
| 539 |
+ |
fill(snap_->atomData.functional.begin(), |
| 540 |
+ |
snap_->atomData.functional.end(), 0.0); |
| 541 |
+ |
} |
| 542 |
+ |
if (storageLayout_ & DataStorage::dslFunctionalDerivative) { |
| 543 |
+ |
fill(snap_->atomData.functionalDerivative.begin(), |
| 544 |
+ |
snap_->atomData.functionalDerivative.end(), 0.0); |
| 545 |
+ |
} |
| 546 |
+ |
if (storageLayout_ & DataStorage::dslSkippedCharge) { |
| 547 |
+ |
fill(snap_->atomData.skippedCharge.begin(), |
| 548 |
+ |
snap_->atomData.skippedCharge.end(), 0.0); |
| 549 |
+ |
} |
| 550 |
+ |
|
| 551 |
+ |
} |
| 552 |
+ |
|
| 553 |
+ |
|
| 554 |
+ |
void ForceMatrixDecomposition::distributeData() { |
| 555 |
+ |
snap_ = sman_->getCurrentSnapshot(); |
| 556 |
+ |
storageLayout_ = sman_->getStorageLayout(); |
| 557 |
+ |
#ifdef IS_MPI |
| 558 |
+ |
|
| 559 |
+ |
// gather up the atomic positions |
| 560 |
+ |
AtomPlanVectorRow->gather(snap_->atomData.position, |
| 561 |
+ |
atomRowData.position); |
| 562 |
+ |
AtomPlanVectorColumn->gather(snap_->atomData.position, |
| 563 |
+ |
atomColData.position); |
| 564 |
+ |
|
| 565 |
+ |
// gather up the cutoff group positions |
| 566 |
+ |
|
| 567 |
+ |
cgPlanVectorRow->gather(snap_->cgData.position, |
| 568 |
+ |
cgRowData.position); |
| 569 |
+ |
|
| 570 |
+ |
cgPlanVectorColumn->gather(snap_->cgData.position, |
| 571 |
+ |
cgColData.position); |
| 572 |
+ |
|
| 573 |
+ |
|
| 574 |
+ |
// if needed, gather the atomic rotation matrices |
| 575 |
+ |
if (storageLayout_ & DataStorage::dslAmat) { |
| 576 |
+ |
AtomPlanMatrixRow->gather(snap_->atomData.aMat, |
| 577 |
+ |
atomRowData.aMat); |
| 578 |
+ |
AtomPlanMatrixColumn->gather(snap_->atomData.aMat, |
| 579 |
+ |
atomColData.aMat); |
| 580 |
+ |
} |
| 581 |
+ |
|
| 582 |
+ |
// if needed, gather the atomic eletrostatic frames |
| 583 |
+ |
if (storageLayout_ & DataStorage::dslElectroFrame) { |
| 584 |
+ |
AtomPlanMatrixRow->gather(snap_->atomData.electroFrame, |
| 585 |
+ |
atomRowData.electroFrame); |
| 586 |
+ |
AtomPlanMatrixColumn->gather(snap_->atomData.electroFrame, |
| 587 |
+ |
atomColData.electroFrame); |
| 588 |
+ |
} |
| 589 |
+ |
|
| 590 |
+ |
#endif |
| 591 |
+ |
} |
| 592 |
+ |
|
| 593 |
+ |
/* collects information obtained during the pre-pair loop onto local |
| 594 |
+ |
* data structures. |
| 595 |
+ |
*/ |
| 596 |
+ |
void ForceMatrixDecomposition::collectIntermediateData() { |
| 597 |
+ |
snap_ = sman_->getCurrentSnapshot(); |
| 598 |
+ |
storageLayout_ = sman_->getStorageLayout(); |
| 599 |
+ |
#ifdef IS_MPI |
| 600 |
+ |
|
| 601 |
+ |
if (storageLayout_ & DataStorage::dslDensity) { |
| 602 |
+ |
|
| 603 |
+ |
AtomPlanRealRow->scatter(atomRowData.density, |
| 604 |
+ |
snap_->atomData.density); |
| 605 |
+ |
|
| 606 |
+ |
int n = snap_->atomData.density.size(); |
| 607 |
+ |
vector<RealType> rho_tmp(n, 0.0); |
| 608 |
+ |
AtomPlanRealColumn->scatter(atomColData.density, rho_tmp); |
| 609 |
+ |
for (int i = 0; i < n; i++) |
| 610 |
+ |
snap_->atomData.density[i] += rho_tmp[i]; |
| 611 |
+ |
} |
| 612 |
+ |
#endif |
| 613 |
+ |
} |
| 614 |
+ |
|
| 615 |
+ |
/* |
| 616 |
+ |
* redistributes information obtained during the pre-pair loop out to |
| 617 |
+ |
* row and column-indexed data structures |
| 618 |
+ |
*/ |
| 619 |
+ |
void ForceMatrixDecomposition::distributeIntermediateData() { |
| 620 |
+ |
snap_ = sman_->getCurrentSnapshot(); |
| 621 |
+ |
storageLayout_ = sman_->getStorageLayout(); |
| 622 |
+ |
#ifdef IS_MPI |
| 623 |
+ |
if (storageLayout_ & DataStorage::dslFunctional) { |
| 624 |
+ |
AtomPlanRealRow->gather(snap_->atomData.functional, |
| 625 |
+ |
atomRowData.functional); |
| 626 |
+ |
AtomPlanRealColumn->gather(snap_->atomData.functional, |
| 627 |
+ |
atomColData.functional); |
| 628 |
+ |
} |
| 629 |
+ |
|
| 630 |
+ |
if (storageLayout_ & DataStorage::dslFunctionalDerivative) { |
| 631 |
+ |
AtomPlanRealRow->gather(snap_->atomData.functionalDerivative, |
| 632 |
+ |
atomRowData.functionalDerivative); |
| 633 |
+ |
AtomPlanRealColumn->gather(snap_->atomData.functionalDerivative, |
| 634 |
+ |
atomColData.functionalDerivative); |
| 635 |
+ |
} |
| 636 |
+ |
#endif |
| 637 |
+ |
} |
| 638 |
+ |
|
| 639 |
+ |
|
| 640 |
+ |
void ForceMatrixDecomposition::collectData() { |
| 641 |
+ |
snap_ = sman_->getCurrentSnapshot(); |
| 642 |
+ |
storageLayout_ = sman_->getStorageLayout(); |
| 643 |
+ |
#ifdef IS_MPI |
| 644 |
+ |
int n = snap_->atomData.force.size(); |
| 645 |
+ |
vector<Vector3d> frc_tmp(n, V3Zero); |
| 646 |
+ |
|
| 647 |
+ |
AtomPlanVectorRow->scatter(atomRowData.force, frc_tmp); |
| 648 |
+ |
for (int i = 0; i < n; i++) { |
| 649 |
+ |
snap_->atomData.force[i] += frc_tmp[i]; |
| 650 |
+ |
frc_tmp[i] = 0.0; |
| 651 |
+ |
} |
| 652 |
+ |
|
| 653 |
+ |
AtomPlanVectorColumn->scatter(atomColData.force, frc_tmp); |
| 654 |
+ |
for (int i = 0; i < n; i++) { |
| 655 |
+ |
snap_->atomData.force[i] += frc_tmp[i]; |
| 656 |
+ |
} |
| 657 |
+ |
|
| 658 |
+ |
if (storageLayout_ & DataStorage::dslTorque) { |
| 659 |
+ |
|
| 660 |
+ |
int nt = snap_->atomData.torque.size(); |
| 661 |
+ |
vector<Vector3d> trq_tmp(nt, V3Zero); |
| 662 |
+ |
|
| 663 |
+ |
AtomPlanVectorRow->scatter(atomRowData.torque, trq_tmp); |
| 664 |
+ |
for (int i = 0; i < nt; i++) { |
| 665 |
+ |
snap_->atomData.torque[i] += trq_tmp[i]; |
| 666 |
+ |
trq_tmp[i] = 0.0; |
| 667 |
+ |
} |
| 668 |
+ |
|
| 669 |
+ |
AtomPlanVectorColumn->scatter(atomColData.torque, trq_tmp); |
| 670 |
+ |
for (int i = 0; i < nt; i++) |
| 671 |
+ |
snap_->atomData.torque[i] += trq_tmp[i]; |
| 672 |
+ |
} |
| 673 |
+ |
|
| 674 |
+ |
if (storageLayout_ & DataStorage::dslSkippedCharge) { |
| 675 |
+ |
|
| 676 |
+ |
int ns = snap_->atomData.skippedCharge.size(); |
| 677 |
+ |
vector<RealType> skch_tmp(ns, 0.0); |
| 678 |
+ |
|
| 679 |
+ |
AtomPlanRealRow->scatter(atomRowData.skippedCharge, skch_tmp); |
| 680 |
+ |
for (int i = 0; i < ns; i++) { |
| 681 |
+ |
snap_->atomData.skippedCharge[i] += skch_tmp[i]; |
| 682 |
+ |
skch_tmp[i] = 0.0; |
| 683 |
+ |
} |
| 684 |
+ |
|
| 685 |
+ |
AtomPlanRealColumn->scatter(atomColData.skippedCharge, skch_tmp); |
| 686 |
+ |
for (int i = 0; i < ns; i++) |
| 687 |
+ |
snap_->atomData.skippedCharge[i] += skch_tmp[i]; |
| 688 |
+ |
} |
| 689 |
+ |
|
| 690 |
+ |
nLocal_ = snap_->getNumberOfAtoms(); |
| 691 |
+ |
|
| 692 |
+ |
vector<potVec> pot_temp(nLocal_, |
| 693 |
+ |
Vector<RealType, N_INTERACTION_FAMILIES> (0.0)); |
| 694 |
+ |
|
| 695 |
+ |
// scatter/gather pot_row into the members of my column |
| 696 |
+ |
|
| 697 |
+ |
AtomPlanPotRow->scatter(pot_row, pot_temp); |
| 698 |
+ |
|
| 699 |
+ |
for (int ii = 0; ii < pot_temp.size(); ii++ ) |
| 700 |
+ |
pairwisePot += pot_temp[ii]; |
| 701 |
+ |
|
| 702 |
+ |
fill(pot_temp.begin(), pot_temp.end(), |
| 703 |
+ |
Vector<RealType, N_INTERACTION_FAMILIES> (0.0)); |
| 704 |
+ |
|
| 705 |
+ |
AtomPlanPotColumn->scatter(pot_col, pot_temp); |
| 706 |
+ |
|
| 707 |
+ |
for (int ii = 0; ii < pot_temp.size(); ii++ ) |
| 708 |
+ |
pairwisePot += pot_temp[ii]; |
| 709 |
+ |
|
| 710 |
+ |
for (int ii = 0; ii < N_INTERACTION_FAMILIES; ii++) { |
| 711 |
+ |
RealType ploc1 = pairwisePot[ii]; |
| 712 |
+ |
RealType ploc2 = 0.0; |
| 713 |
+ |
MPI::COMM_WORLD.Allreduce(&ploc1, &ploc2, 1, MPI::REALTYPE, MPI::SUM); |
| 714 |
+ |
pairwisePot[ii] = ploc2; |
| 715 |
+ |
} |
| 716 |
+ |
|
| 717 |
+ |
#endif |
| 718 |
+ |
|
| 719 |
+ |
} |
| 720 |
+ |
|
| 721 |
+ |
int ForceMatrixDecomposition::getNAtomsInRow() { |
| 722 |
+ |
#ifdef IS_MPI |
| 723 |
+ |
return nAtomsInRow_; |
| 724 |
+ |
#else |
| 725 |
+ |
return nLocal_; |
| 726 |
+ |
#endif |
| 727 |
+ |
} |
| 728 |
+ |
|
| 729 |
+ |
/** |
| 730 |
+ |
* returns the list of atoms belonging to this group. |
| 731 |
+ |
*/ |
| 732 |
+ |
vector<int> ForceMatrixDecomposition::getAtomsInGroupRow(int cg1){ |
| 733 |
+ |
#ifdef IS_MPI |
| 734 |
+ |
return groupListRow_[cg1]; |
| 735 |
+ |
#else |
| 736 |
+ |
return groupList_[cg1]; |
| 737 |
+ |
#endif |
| 738 |
+ |
} |
| 739 |
+ |
|
| 740 |
+ |
vector<int> ForceMatrixDecomposition::getAtomsInGroupColumn(int cg2){ |
| 741 |
+ |
#ifdef IS_MPI |
| 742 |
+ |
return groupListCol_[cg2]; |
| 743 |
+ |
#else |
| 744 |
+ |
return groupList_[cg2]; |
| 745 |
+ |
#endif |
| 746 |
+ |
} |
| 747 |
+ |
|
| 748 |
+ |
Vector3d ForceMatrixDecomposition::getIntergroupVector(int cg1, int cg2){ |
| 749 |
+ |
Vector3d d; |
| 750 |
+ |
|
| 751 |
+ |
#ifdef IS_MPI |
| 752 |
+ |
d = cgColData.position[cg2] - cgRowData.position[cg1]; |
| 753 |
+ |
#else |
| 754 |
+ |
d = snap_->cgData.position[cg2] - snap_->cgData.position[cg1]; |
| 755 |
+ |
#endif |
| 756 |
+ |
|
| 757 |
+ |
snap_->wrapVector(d); |
| 758 |
+ |
return d; |
| 759 |
+ |
} |
| 760 |
+ |
|
| 761 |
+ |
|
| 762 |
+ |
Vector3d ForceMatrixDecomposition::getAtomToGroupVectorRow(int atom1, int cg1){ |
| 763 |
+ |
|
| 764 |
+ |
Vector3d d; |
| 765 |
+ |
|
| 766 |
+ |
#ifdef IS_MPI |
| 767 |
+ |
d = cgRowData.position[cg1] - atomRowData.position[atom1]; |
| 768 |
+ |
#else |
| 769 |
+ |
d = snap_->cgData.position[cg1] - snap_->atomData.position[atom1]; |
| 770 |
+ |
#endif |
| 771 |
+ |
|
| 772 |
+ |
snap_->wrapVector(d); |
| 773 |
+ |
return d; |
| 774 |
+ |
} |
| 775 |
+ |
|
| 776 |
+ |
Vector3d ForceMatrixDecomposition::getAtomToGroupVectorColumn(int atom2, int cg2){ |
| 777 |
+ |
Vector3d d; |
| 778 |
+ |
|
| 779 |
+ |
#ifdef IS_MPI |
| 780 |
+ |
d = cgColData.position[cg2] - atomColData.position[atom2]; |
| 781 |
+ |
#else |
| 782 |
+ |
d = snap_->cgData.position[cg2] - snap_->atomData.position[atom2]; |
| 783 |
+ |
#endif |
| 784 |
+ |
|
| 785 |
+ |
snap_->wrapVector(d); |
| 786 |
+ |
return d; |
| 787 |
+ |
} |
| 788 |
+ |
|
| 789 |
+ |
RealType ForceMatrixDecomposition::getMassFactorRow(int atom1) { |
| 790 |
+ |
#ifdef IS_MPI |
| 791 |
+ |
return massFactorsRow[atom1]; |
| 792 |
+ |
#else |
| 793 |
+ |
return massFactors[atom1]; |
| 794 |
+ |
#endif |
| 795 |
+ |
} |
| 796 |
+ |
|
| 797 |
+ |
RealType ForceMatrixDecomposition::getMassFactorColumn(int atom2) { |
| 798 |
+ |
#ifdef IS_MPI |
| 799 |
+ |
return massFactorsCol[atom2]; |
| 800 |
+ |
#else |
| 801 |
+ |
return massFactors[atom2]; |
| 802 |
+ |
#endif |
| 803 |
+ |
|
| 804 |
+ |
} |
| 805 |
+ |
|
| 806 |
+ |
Vector3d ForceMatrixDecomposition::getInteratomicVector(int atom1, int atom2){ |
| 807 |
+ |
Vector3d d; |
| 808 |
+ |
|
| 809 |
+ |
#ifdef IS_MPI |
| 810 |
+ |
d = atomColData.position[atom2] - atomRowData.position[atom1]; |
| 811 |
+ |
#else |
| 812 |
+ |
d = snap_->atomData.position[atom2] - snap_->atomData.position[atom1]; |
| 813 |
+ |
#endif |
| 814 |
+ |
|
| 815 |
+ |
snap_->wrapVector(d); |
| 816 |
+ |
return d; |
| 817 |
+ |
} |
| 818 |
+ |
|
| 819 |
+ |
vector<int> ForceMatrixDecomposition::getExcludesForAtom(int atom1) { |
| 820 |
+ |
return excludesForAtom[atom1]; |
| 821 |
+ |
} |
| 822 |
+ |
|
| 823 |
+ |
/** |
| 824 |
+ |
* We need to exclude some overcounted interactions that result from |
| 825 |
+ |
* the parallel decomposition. |
| 826 |
+ |
*/ |
| 827 |
+ |
bool ForceMatrixDecomposition::skipAtomPair(int atom1, int atom2) { |
| 828 |
+ |
int unique_id_1, unique_id_2; |
| 829 |
+ |
|
| 830 |
+ |
#ifdef IS_MPI |
| 831 |
+ |
// in MPI, we have to look up the unique IDs for each atom |
| 832 |
+ |
unique_id_1 = AtomRowToGlobal[atom1]; |
| 833 |
+ |
unique_id_2 = AtomColToGlobal[atom2]; |
| 834 |
+ |
|
| 835 |
+ |
// this situation should only arise in MPI simulations |
| 836 |
+ |
if (unique_id_1 == unique_id_2) return true; |
| 837 |
+ |
|
| 838 |
+ |
// this prevents us from doing the pair on multiple processors |
| 839 |
+ |
if (unique_id_1 < unique_id_2) { |
| 840 |
+ |
if ((unique_id_1 + unique_id_2) % 2 == 0) return true; |
| 841 |
+ |
} else { |
| 842 |
+ |
if ((unique_id_1 + unique_id_2) % 2 == 1) return true; |
| 843 |
+ |
} |
| 844 |
+ |
#endif |
| 845 |
+ |
return false; |
| 846 |
+ |
} |
| 847 |
+ |
|
| 848 |
+ |
/** |
| 849 |
+ |
* We need to handle the interactions for atoms who are involved in |
| 850 |
+ |
* the same rigid body as well as some short range interactions |
| 851 |
+ |
* (bonds, bends, torsions) differently from other interactions. |
| 852 |
+ |
* We'll still visit the pairwise routines, but with a flag that |
| 853 |
+ |
* tells those routines to exclude the pair from direct long range |
| 854 |
+ |
* interactions. Some indirect interactions (notably reaction |
| 855 |
+ |
* field) must still be handled for these pairs. |
| 856 |
+ |
*/ |
| 857 |
+ |
bool ForceMatrixDecomposition::excludeAtomPair(int atom1, int atom2) { |
| 858 |
+ |
int unique_id_2; |
| 859 |
+ |
#ifdef IS_MPI |
| 860 |
+ |
// in MPI, we have to look up the unique IDs for the row atom. |
| 861 |
+ |
unique_id_2 = AtomColToGlobal[atom2]; |
| 862 |
+ |
#else |
| 863 |
+ |
// in the normal loop, the atom numbers are unique |
| 864 |
+ |
unique_id_2 = atom2; |
| 865 |
+ |
#endif |
| 866 |
+ |
|
| 867 |
+ |
for (vector<int>::iterator i = excludesForAtom[atom1].begin(); |
| 868 |
+ |
i != excludesForAtom[atom1].end(); ++i) { |
| 869 |
+ |
if ( (*i) == unique_id_2 ) return true; |
| 870 |
+ |
} |
| 871 |
+ |
|
| 872 |
+ |
return false; |
| 873 |
+ |
} |
| 874 |
+ |
|
| 875 |
+ |
|
| 876 |
+ |
void ForceMatrixDecomposition::addForceToAtomRow(int atom1, Vector3d fg){ |
| 877 |
+ |
#ifdef IS_MPI |
| 878 |
+ |
atomRowData.force[atom1] += fg; |
| 879 |
+ |
#else |
| 880 |
+ |
snap_->atomData.force[atom1] += fg; |
| 881 |
+ |
#endif |
| 882 |
+ |
} |
| 883 |
+ |
|
| 884 |
+ |
void ForceMatrixDecomposition::addForceToAtomColumn(int atom2, Vector3d fg){ |
| 885 |
+ |
#ifdef IS_MPI |
| 886 |
+ |
atomColData.force[atom2] += fg; |
| 887 |
+ |
#else |
| 888 |
+ |
snap_->atomData.force[atom2] += fg; |
| 889 |
+ |
#endif |
| 890 |
+ |
} |
| 891 |
+ |
|
| 892 |
+ |
// filling interaction blocks with pointers |
| 893 |
+ |
void ForceMatrixDecomposition::fillInteractionData(InteractionData &idat, |
| 894 |
+ |
int atom1, int atom2) { |
| 895 |
+ |
|
| 896 |
+ |
idat.excluded = excludeAtomPair(atom1, atom2); |
| 897 |
+ |
|
| 898 |
+ |
#ifdef IS_MPI |
| 899 |
+ |
idat.atypes = make_pair( atypesRow[atom1], atypesCol[atom2]); |
| 900 |
+ |
//idat.atypes = make_pair( ff_->getAtomType(identsRow[atom1]), |
| 901 |
+ |
// ff_->getAtomType(identsCol[atom2]) ); |
| 902 |
+ |
|
| 903 |
+ |
if (storageLayout_ & DataStorage::dslAmat) { |
| 904 |
+ |
idat.A1 = &(atomRowData.aMat[atom1]); |
| 905 |
+ |
idat.A2 = &(atomColData.aMat[atom2]); |
| 906 |
+ |
} |
| 907 |
+ |
|
| 908 |
+ |
if (storageLayout_ & DataStorage::dslElectroFrame) { |
| 909 |
+ |
idat.eFrame1 = &(atomRowData.electroFrame[atom1]); |
| 910 |
+ |
idat.eFrame2 = &(atomColData.electroFrame[atom2]); |
| 911 |
+ |
} |
| 912 |
+ |
|
| 913 |
+ |
if (storageLayout_ & DataStorage::dslTorque) { |
| 914 |
+ |
idat.t1 = &(atomRowData.torque[atom1]); |
| 915 |
+ |
idat.t2 = &(atomColData.torque[atom2]); |
| 916 |
+ |
} |
| 917 |
+ |
|
| 918 |
+ |
if (storageLayout_ & DataStorage::dslDensity) { |
| 919 |
+ |
idat.rho1 = &(atomRowData.density[atom1]); |
| 920 |
+ |
idat.rho2 = &(atomColData.density[atom2]); |
| 921 |
+ |
} |
| 922 |
+ |
|
| 923 |
+ |
if (storageLayout_ & DataStorage::dslFunctional) { |
| 924 |
+ |
idat.frho1 = &(atomRowData.functional[atom1]); |
| 925 |
+ |
idat.frho2 = &(atomColData.functional[atom2]); |
| 926 |
+ |
} |
| 927 |
+ |
|
| 928 |
+ |
if (storageLayout_ & DataStorage::dslFunctionalDerivative) { |
| 929 |
+ |
idat.dfrho1 = &(atomRowData.functionalDerivative[atom1]); |
| 930 |
+ |
idat.dfrho2 = &(atomColData.functionalDerivative[atom2]); |
| 931 |
+ |
} |
| 932 |
+ |
|
| 933 |
+ |
if (storageLayout_ & DataStorage::dslParticlePot) { |
| 934 |
+ |
idat.particlePot1 = &(atomRowData.particlePot[atom1]); |
| 935 |
+ |
idat.particlePot2 = &(atomColData.particlePot[atom2]); |
| 936 |
+ |
} |
| 937 |
+ |
|
| 938 |
+ |
if (storageLayout_ & DataStorage::dslSkippedCharge) { |
| 939 |
+ |
idat.skippedCharge1 = &(atomRowData.skippedCharge[atom1]); |
| 940 |
+ |
idat.skippedCharge2 = &(atomColData.skippedCharge[atom2]); |
| 941 |
+ |
} |
| 942 |
+ |
|
| 943 |
+ |
#else |
| 944 |
+ |
|
| 945 |
+ |
idat.atypes = make_pair( atypesLocal[atom1], atypesLocal[atom2]); |
| 946 |
+ |
//idat.atypes = make_pair( ff_->getAtomType(idents[atom1]), |
| 947 |
+ |
// ff_->getAtomType(idents[atom2]) ); |
| 948 |
+ |
|
| 949 |
+ |
if (storageLayout_ & DataStorage::dslAmat) { |
| 950 |
+ |
idat.A1 = &(snap_->atomData.aMat[atom1]); |
| 951 |
+ |
idat.A2 = &(snap_->atomData.aMat[atom2]); |
| 952 |
+ |
} |
| 953 |
+ |
|
| 954 |
+ |
if (storageLayout_ & DataStorage::dslElectroFrame) { |
| 955 |
+ |
idat.eFrame1 = &(snap_->atomData.electroFrame[atom1]); |
| 956 |
+ |
idat.eFrame2 = &(snap_->atomData.electroFrame[atom2]); |
| 957 |
+ |
} |
| 958 |
+ |
|
| 959 |
+ |
if (storageLayout_ & DataStorage::dslTorque) { |
| 960 |
+ |
idat.t1 = &(snap_->atomData.torque[atom1]); |
| 961 |
+ |
idat.t2 = &(snap_->atomData.torque[atom2]); |
| 962 |
+ |
} |
| 963 |
+ |
|
| 964 |
+ |
if (storageLayout_ & DataStorage::dslDensity) { |
| 965 |
+ |
idat.rho1 = &(snap_->atomData.density[atom1]); |
| 966 |
+ |
idat.rho2 = &(snap_->atomData.density[atom2]); |
| 967 |
+ |
} |
| 968 |
+ |
|
| 969 |
+ |
if (storageLayout_ & DataStorage::dslFunctional) { |
| 970 |
+ |
idat.frho1 = &(snap_->atomData.functional[atom1]); |
| 971 |
+ |
idat.frho2 = &(snap_->atomData.functional[atom2]); |
| 972 |
+ |
} |
| 973 |
+ |
|
| 974 |
+ |
if (storageLayout_ & DataStorage::dslFunctionalDerivative) { |
| 975 |
+ |
idat.dfrho1 = &(snap_->atomData.functionalDerivative[atom1]); |
| 976 |
+ |
idat.dfrho2 = &(snap_->atomData.functionalDerivative[atom2]); |
| 977 |
+ |
} |
| 978 |
+ |
|
| 979 |
+ |
if (storageLayout_ & DataStorage::dslParticlePot) { |
| 980 |
+ |
idat.particlePot1 = &(snap_->atomData.particlePot[atom1]); |
| 981 |
+ |
idat.particlePot2 = &(snap_->atomData.particlePot[atom2]); |
| 982 |
+ |
} |
| 983 |
+ |
|
| 984 |
+ |
if (storageLayout_ & DataStorage::dslSkippedCharge) { |
| 985 |
+ |
idat.skippedCharge1 = &(snap_->atomData.skippedCharge[atom1]); |
| 986 |
+ |
idat.skippedCharge2 = &(snap_->atomData.skippedCharge[atom2]); |
| 987 |
+ |
} |
| 988 |
+ |
#endif |
| 989 |
+ |
} |
| 990 |
+ |
|
| 991 |
+ |
|
| 992 |
+ |
void ForceMatrixDecomposition::unpackInteractionData(InteractionData &idat, int atom1, int atom2) { |
| 993 |
+ |
#ifdef IS_MPI |
| 994 |
+ |
pot_row[atom1] += 0.5 * *(idat.pot); |
| 995 |
+ |
pot_col[atom2] += 0.5 * *(idat.pot); |
| 996 |
+ |
|
| 997 |
+ |
atomRowData.force[atom1] += *(idat.f1); |
| 998 |
+ |
atomColData.force[atom2] -= *(idat.f1); |
| 999 |
+ |
#else |
| 1000 |
+ |
pairwisePot += *(idat.pot); |
| 1001 |
+ |
|
| 1002 |
+ |
snap_->atomData.force[atom1] += *(idat.f1); |
| 1003 |
+ |
snap_->atomData.force[atom2] -= *(idat.f1); |
| 1004 |
+ |
#endif |
| 1005 |
+ |
|
| 1006 |
+ |
} |
| 1007 |
+ |
|
| 1008 |
+ |
/* |
| 1009 |
+ |
* buildNeighborList |
| 1010 |
+ |
* |
| 1011 |
+ |
* first element of pair is row-indexed CutoffGroup |
| 1012 |
+ |
* second element of pair is column-indexed CutoffGroup |
| 1013 |
+ |
*/ |
| 1014 |
+ |
vector<pair<int, int> > ForceMatrixDecomposition::buildNeighborList() { |
| 1015 |
+ |
|
| 1016 |
+ |
vector<pair<int, int> > neighborList; |
| 1017 |
+ |
groupCutoffs cuts; |
| 1018 |
+ |
bool doAllPairs = false; |
| 1019 |
+ |
|
| 1020 |
+ |
#ifdef IS_MPI |
| 1021 |
+ |
cellListRow_.clear(); |
| 1022 |
+ |
cellListCol_.clear(); |
| 1023 |
+ |
#else |
| 1024 |
+ |
cellList_.clear(); |
| 1025 |
+ |
#endif |
| 1026 |
+ |
|
| 1027 |
+ |
RealType rList_ = (largestRcut_ + skinThickness_); |
| 1028 |
+ |
RealType rl2 = rList_ * rList_; |
| 1029 |
+ |
Snapshot* snap_ = sman_->getCurrentSnapshot(); |
| 1030 |
+ |
Mat3x3d Hmat = snap_->getHmat(); |
| 1031 |
+ |
Vector3d Hx = Hmat.getColumn(0); |
| 1032 |
+ |
Vector3d Hy = Hmat.getColumn(1); |
| 1033 |
+ |
Vector3d Hz = Hmat.getColumn(2); |
| 1034 |
+ |
|
| 1035 |
+ |
nCells_.x() = (int) ( Hx.length() )/ rList_; |
| 1036 |
+ |
nCells_.y() = (int) ( Hy.length() )/ rList_; |
| 1037 |
+ |
nCells_.z() = (int) ( Hz.length() )/ rList_; |
| 1038 |
+ |
|
| 1039 |
+ |
// handle small boxes where the cell offsets can end up repeating cells |
| 1040 |
+ |
|
| 1041 |
+ |
if (nCells_.x() < 3) doAllPairs = true; |
| 1042 |
+ |
if (nCells_.y() < 3) doAllPairs = true; |
| 1043 |
+ |
if (nCells_.z() < 3) doAllPairs = true; |
| 1044 |
+ |
|
| 1045 |
+ |
Mat3x3d invHmat = snap_->getInvHmat(); |
| 1046 |
+ |
Vector3d rs, scaled, dr; |
| 1047 |
+ |
Vector3i whichCell; |
| 1048 |
+ |
int cellIndex; |
| 1049 |
+ |
int nCtot = nCells_.x() * nCells_.y() * nCells_.z(); |
| 1050 |
+ |
|
| 1051 |
+ |
#ifdef IS_MPI |
| 1052 |
+ |
cellListRow_.resize(nCtot); |
| 1053 |
+ |
cellListCol_.resize(nCtot); |
| 1054 |
+ |
#else |
| 1055 |
+ |
cellList_.resize(nCtot); |
| 1056 |
+ |
#endif |
| 1057 |
+ |
|
| 1058 |
+ |
if (!doAllPairs) { |
| 1059 |
+ |
#ifdef IS_MPI |
| 1060 |
+ |
|
| 1061 |
+ |
for (int i = 0; i < nGroupsInRow_; i++) { |
| 1062 |
+ |
rs = cgRowData.position[i]; |
| 1063 |
+ |
|
| 1064 |
+ |
// scaled positions relative to the box vectors |
| 1065 |
+ |
scaled = invHmat * rs; |
| 1066 |
+ |
|
| 1067 |
+ |
// wrap the vector back into the unit box by subtracting integer box |
| 1068 |
+ |
// numbers |
| 1069 |
+ |
for (int j = 0; j < 3; j++) { |
| 1070 |
+ |
scaled[j] -= roundMe(scaled[j]); |
| 1071 |
+ |
scaled[j] += 0.5; |
| 1072 |
+ |
} |
| 1073 |
+ |
|
| 1074 |
+ |
// find xyz-indices of cell that cutoffGroup is in. |
| 1075 |
+ |
whichCell.x() = nCells_.x() * scaled.x(); |
| 1076 |
+ |
whichCell.y() = nCells_.y() * scaled.y(); |
| 1077 |
+ |
whichCell.z() = nCells_.z() * scaled.z(); |
| 1078 |
+ |
|
| 1079 |
+ |
// find single index of this cell: |
| 1080 |
+ |
cellIndex = Vlinear(whichCell, nCells_); |
| 1081 |
+ |
|
| 1082 |
+ |
// add this cutoff group to the list of groups in this cell; |
| 1083 |
+ |
cellListRow_[cellIndex].push_back(i); |
| 1084 |
+ |
} |
| 1085 |
+ |
for (int i = 0; i < nGroupsInCol_; i++) { |
| 1086 |
+ |
rs = cgColData.position[i]; |
| 1087 |
+ |
|
| 1088 |
+ |
// scaled positions relative to the box vectors |
| 1089 |
+ |
scaled = invHmat * rs; |
| 1090 |
+ |
|
| 1091 |
+ |
// wrap the vector back into the unit box by subtracting integer box |
| 1092 |
+ |
// numbers |
| 1093 |
+ |
for (int j = 0; j < 3; j++) { |
| 1094 |
+ |
scaled[j] -= roundMe(scaled[j]); |
| 1095 |
+ |
scaled[j] += 0.5; |
| 1096 |
+ |
} |
| 1097 |
+ |
|
| 1098 |
+ |
// find xyz-indices of cell that cutoffGroup is in. |
| 1099 |
+ |
whichCell.x() = nCells_.x() * scaled.x(); |
| 1100 |
+ |
whichCell.y() = nCells_.y() * scaled.y(); |
| 1101 |
+ |
whichCell.z() = nCells_.z() * scaled.z(); |
| 1102 |
+ |
|
| 1103 |
+ |
// find single index of this cell: |
| 1104 |
+ |
cellIndex = Vlinear(whichCell, nCells_); |
| 1105 |
+ |
|
| 1106 |
+ |
// add this cutoff group to the list of groups in this cell; |
| 1107 |
+ |
cellListCol_[cellIndex].push_back(i); |
| 1108 |
+ |
} |
| 1109 |
+ |
|
| 1110 |
+ |
#else |
| 1111 |
+ |
for (int i = 0; i < nGroups_; i++) { |
| 1112 |
+ |
rs = snap_->cgData.position[i]; |
| 1113 |
+ |
|
| 1114 |
+ |
// scaled positions relative to the box vectors |
| 1115 |
+ |
scaled = invHmat * rs; |
| 1116 |
+ |
|
| 1117 |
+ |
// wrap the vector back into the unit box by subtracting integer box |
| 1118 |
+ |
// numbers |
| 1119 |
+ |
for (int j = 0; j < 3; j++) { |
| 1120 |
+ |
scaled[j] -= roundMe(scaled[j]); |
| 1121 |
+ |
scaled[j] += 0.5; |
| 1122 |
+ |
} |
| 1123 |
+ |
|
| 1124 |
+ |
// find xyz-indices of cell that cutoffGroup is in. |
| 1125 |
+ |
whichCell.x() = nCells_.x() * scaled.x(); |
| 1126 |
+ |
whichCell.y() = nCells_.y() * scaled.y(); |
| 1127 |
+ |
whichCell.z() = nCells_.z() * scaled.z(); |
| 1128 |
+ |
|
| 1129 |
+ |
// find single index of this cell: |
| 1130 |
+ |
cellIndex = Vlinear(whichCell, nCells_); |
| 1131 |
+ |
|
| 1132 |
+ |
// add this cutoff group to the list of groups in this cell; |
| 1133 |
+ |
cellList_[cellIndex].push_back(i); |
| 1134 |
+ |
} |
| 1135 |
+ |
|
| 1136 |
+ |
#endif |
| 1137 |
+ |
|
| 1138 |
+ |
for (int m1z = 0; m1z < nCells_.z(); m1z++) { |
| 1139 |
+ |
for (int m1y = 0; m1y < nCells_.y(); m1y++) { |
| 1140 |
+ |
for (int m1x = 0; m1x < nCells_.x(); m1x++) { |
| 1141 |
+ |
Vector3i m1v(m1x, m1y, m1z); |
| 1142 |
+ |
int m1 = Vlinear(m1v, nCells_); |
| 1143 |
+ |
|
| 1144 |
+ |
for (vector<Vector3i>::iterator os = cellOffsets_.begin(); |
| 1145 |
+ |
os != cellOffsets_.end(); ++os) { |
| 1146 |
+ |
|
| 1147 |
+ |
Vector3i m2v = m1v + (*os); |
| 1148 |
+ |
|
| 1149 |
+ |
|
| 1150 |
+ |
if (m2v.x() >= nCells_.x()) { |
| 1151 |
+ |
m2v.x() = 0; |
| 1152 |
+ |
} else if (m2v.x() < 0) { |
| 1153 |
+ |
m2v.x() = nCells_.x() - 1; |
| 1154 |
+ |
} |
| 1155 |
+ |
|
| 1156 |
+ |
if (m2v.y() >= nCells_.y()) { |
| 1157 |
+ |
m2v.y() = 0; |
| 1158 |
+ |
} else if (m2v.y() < 0) { |
| 1159 |
+ |
m2v.y() = nCells_.y() - 1; |
| 1160 |
+ |
} |
| 1161 |
+ |
|
| 1162 |
+ |
if (m2v.z() >= nCells_.z()) { |
| 1163 |
+ |
m2v.z() = 0; |
| 1164 |
+ |
} else if (m2v.z() < 0) { |
| 1165 |
+ |
m2v.z() = nCells_.z() - 1; |
| 1166 |
+ |
} |
| 1167 |
+ |
|
| 1168 |
+ |
int m2 = Vlinear (m2v, nCells_); |
| 1169 |
+ |
|
| 1170 |
+ |
#ifdef IS_MPI |
| 1171 |
+ |
for (vector<int>::iterator j1 = cellListRow_[m1].begin(); |
| 1172 |
+ |
j1 != cellListRow_[m1].end(); ++j1) { |
| 1173 |
+ |
for (vector<int>::iterator j2 = cellListCol_[m2].begin(); |
| 1174 |
+ |
j2 != cellListCol_[m2].end(); ++j2) { |
| 1175 |
+ |
|
| 1176 |
+ |
// In parallel, we need to visit *all* pairs of row |
| 1177 |
+ |
// & column indicies and will divide labor in the |
| 1178 |
+ |
// force evaluation later. |
| 1179 |
+ |
dr = cgColData.position[(*j2)] - cgRowData.position[(*j1)]; |
| 1180 |
+ |
snap_->wrapVector(dr); |
| 1181 |
+ |
cuts = getGroupCutoffs( (*j1), (*j2) ); |
| 1182 |
+ |
if (dr.lengthSquare() < cuts.third) { |
| 1183 |
+ |
neighborList.push_back(make_pair((*j1), (*j2))); |
| 1184 |
+ |
} |
| 1185 |
+ |
} |
| 1186 |
+ |
} |
| 1187 |
+ |
#else |
| 1188 |
+ |
|
| 1189 |
+ |
for (vector<int>::iterator j1 = cellList_[m1].begin(); |
| 1190 |
+ |
j1 != cellList_[m1].end(); ++j1) { |
| 1191 |
+ |
for (vector<int>::iterator j2 = cellList_[m2].begin(); |
| 1192 |
+ |
j2 != cellList_[m2].end(); ++j2) { |
| 1193 |
+ |
|
| 1194 |
+ |
// Always do this if we're in different cells or if |
| 1195 |
+ |
// we're in the same cell and the global index of the |
| 1196 |
+ |
// j2 cutoff group is less than the j1 cutoff group |
| 1197 |
+ |
|
| 1198 |
+ |
if (m2 != m1 || (*j2) < (*j1)) { |
| 1199 |
+ |
dr = snap_->cgData.position[(*j2)] - snap_->cgData.position[(*j1)]; |
| 1200 |
+ |
snap_->wrapVector(dr); |
| 1201 |
+ |
cuts = getGroupCutoffs( (*j1), (*j2) ); |
| 1202 |
+ |
if (dr.lengthSquare() < cuts.third) { |
| 1203 |
+ |
neighborList.push_back(make_pair((*j1), (*j2))); |
| 1204 |
+ |
} |
| 1205 |
+ |
} |
| 1206 |
+ |
} |
| 1207 |
+ |
} |
| 1208 |
+ |
#endif |
| 1209 |
+ |
} |
| 1210 |
+ |
} |
| 1211 |
+ |
} |
| 1212 |
+ |
} |
| 1213 |
+ |
} else { |
| 1214 |
+ |
// branch to do all cutoff group pairs |
| 1215 |
+ |
#ifdef IS_MPI |
| 1216 |
+ |
for (int j1 = 0; j1 < nGroupsInRow_; j1++) { |
| 1217 |
+ |
for (int j2 = 0; j2 < nGroupsInCol_; j2++) { |
| 1218 |
+ |
dr = cgColData.position[j2] - cgRowData.position[j1]; |
| 1219 |
+ |
snap_->wrapVector(dr); |
| 1220 |
+ |
cuts = getGroupCutoffs( j1, j2 ); |
| 1221 |
+ |
if (dr.lengthSquare() < cuts.third) { |
| 1222 |
+ |
neighborList.push_back(make_pair(j1, j2)); |
| 1223 |
+ |
} |
| 1224 |
+ |
} |
| 1225 |
+ |
} |
| 1226 |
+ |
#else |
| 1227 |
+ |
for (int j1 = 0; j1 < nGroups_ - 1; j1++) { |
| 1228 |
+ |
for (int j2 = j1 + 1; j2 < nGroups_; j2++) { |
| 1229 |
+ |
dr = snap_->cgData.position[j2] - snap_->cgData.position[j1]; |
| 1230 |
+ |
snap_->wrapVector(dr); |
| 1231 |
+ |
cuts = getGroupCutoffs( j1, j2 ); |
| 1232 |
+ |
if (dr.lengthSquare() < cuts.third) { |
| 1233 |
+ |
neighborList.push_back(make_pair(j1, j2)); |
| 1234 |
+ |
} |
| 1235 |
+ |
} |
| 1236 |
+ |
} |
| 1237 |
+ |
#endif |
| 1238 |
+ |
} |
| 1239 |
+ |
|
| 1240 |
+ |
// save the local cutoff group positions for the check that is |
| 1241 |
+ |
// done on each loop: |
| 1242 |
+ |
saved_CG_positions_.clear(); |
| 1243 |
+ |
for (int i = 0; i < nGroups_; i++) |
| 1244 |
+ |
saved_CG_positions_.push_back(snap_->cgData.position[i]); |
| 1245 |
+ |
|
| 1246 |
+ |
return neighborList; |
| 1247 |
+ |
} |
| 1248 |
+ |
} //end namespace OpenMD |
