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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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* 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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* that the following conditions are met: |
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* |
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* 1. Acknowledgement of the program authors must be made in any |
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* publication of scientific results based in part on use of the |
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* program. An acceptable form of acknowledgement is citation of |
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* the article in which the program was described (Matthew |
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* A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher |
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* J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented |
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* Parallel Simulation Engine for Molecular Dynamics," |
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* J. Comput. Chem. 26, pp. 252-271 (2005)) |
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* |
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* 2. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 3. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the |
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* distribution. |
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* |
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* This software is provided "AS IS," without a warranty of any |
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* kind. All express or implied conditions, representations and |
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* warranties, including any implied warranty of merchantability, |
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* fitness for a particular purpose or non-infringement, are hereby |
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* excluded. The University of Notre Dame and its licensors shall not |
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* be liable for any damages suffered by licensee as a result of |
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* using, modifying or distributing the software or its |
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* derivatives. In no event will the University of Notre Dame or its |
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* licensors be liable for any lost revenue, profit or data, or for |
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* direct, indirect, special, consequential, incidental or punitive |
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* damages, however caused and regardless of the theory of liability, |
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* arising out of the use of or inability to use software, even if the |
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* University of Notre Dame has been advised of the possibility of |
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* such damages. |
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*/ |
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|
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/** |
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* @file SimInfo.cpp |
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* @author tlin |
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* @date 11/02/2004 |
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* @version 1.0 |
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*/ |
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|
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#include <algorithm> |
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#include <set> |
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|
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#include "brains/SimInfo.hpp" |
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#include "math/Vector3.hpp" |
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#include "primitives/Molecule.hpp" |
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#include "UseTheForce/fCutoffPolicy.h" |
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#include "UseTheForce/DarkSide/fElectrostaticSummationMethod.h" |
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#include "UseTheForce/doForces_interface.h" |
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#include "UseTheForce/DarkSide/electrostatic_interface.h" |
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#include "UseTheForce/notifyCutoffs_interface.h" |
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#include "utils/MemoryUtils.hpp" |
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#include "utils/simError.h" |
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#include "selection/SelectionManager.hpp" |
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|
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#ifdef IS_MPI |
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#include "UseTheForce/mpiComponentPlan.h" |
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#include "UseTheForce/DarkSide/simParallel_interface.h" |
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#endif |
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|
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namespace oopse { |
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|
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SimInfo::SimInfo(MakeStamps* stamps, std::vector<std::pair<MoleculeStamp*, int> >& molStampPairs, |
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ForceField* ff, Globals* simParams) : |
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stamps_(stamps), forceField_(ff), simParams_(simParams), |
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ndf_(0), ndfRaw_(0), ndfTrans_(0), nZconstraint_(0), |
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nGlobalMols_(0), nGlobalAtoms_(0), nGlobalCutoffGroups_(0), |
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nGlobalIntegrableObjects_(0), nGlobalRigidBodies_(0), |
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nAtoms_(0), nBonds_(0), nBends_(0), nTorsions_(0), nRigidBodies_(0), |
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nIntegrableObjects_(0), nCutoffGroups_(0), nConstraints_(0), |
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sman_(NULL), fortranInitialized_(false) { |
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|
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|
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std::vector<std::pair<MoleculeStamp*, int> >::iterator i; |
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MoleculeStamp* molStamp; |
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int nMolWithSameStamp; |
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int nCutoffAtoms = 0; // number of atoms belong to cutoff groups |
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int nGroups = 0; //total cutoff groups defined in meta-data file |
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CutoffGroupStamp* cgStamp; |
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RigidBodyStamp* rbStamp; |
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int nRigidAtoms = 0; |
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|
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for (i = molStampPairs.begin(); i !=molStampPairs.end(); ++i) { |
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molStamp = i->first; |
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nMolWithSameStamp = i->second; |
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|
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addMoleculeStamp(molStamp, nMolWithSameStamp); |
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|
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//calculate atoms in molecules |
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nGlobalAtoms_ += molStamp->getNAtoms() *nMolWithSameStamp; |
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|
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|
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//calculate atoms in cutoff groups |
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int nAtomsInGroups = 0; |
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int nCutoffGroupsInStamp = molStamp->getNCutoffGroups(); |
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|
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for (int j=0; j < nCutoffGroupsInStamp; j++) { |
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cgStamp = molStamp->getCutoffGroup(j); |
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nAtomsInGroups += cgStamp->getNMembers(); |
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} |
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|
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nGroups += nCutoffGroupsInStamp * nMolWithSameStamp; |
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|
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nCutoffAtoms += nAtomsInGroups * nMolWithSameStamp; |
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|
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//calculate atoms in rigid bodies |
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int nAtomsInRigidBodies = 0; |
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int nRigidBodiesInStamp = molStamp->getNRigidBodies(); |
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|
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for (int j=0; j < nRigidBodiesInStamp; j++) { |
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rbStamp = molStamp->getRigidBody(j); |
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nAtomsInRigidBodies += rbStamp->getNMembers(); |
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} |
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|
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nGlobalRigidBodies_ += nRigidBodiesInStamp * nMolWithSameStamp; |
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nRigidAtoms += nAtomsInRigidBodies * nMolWithSameStamp; |
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|
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} |
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|
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//every free atom (atom does not belong to cutoff groups) is a cutoff |
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//group therefore the total number of cutoff groups in the system is |
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//equal to the total number of atoms minus number of atoms belong to |
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//cutoff group defined in meta-data file plus the number of cutoff |
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//groups defined in meta-data file |
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nGlobalCutoffGroups_ = nGlobalAtoms_ - nCutoffAtoms + nGroups; |
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|
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//every free atom (atom does not belong to rigid bodies) is an |
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//integrable object therefore the total number of integrable objects |
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//in the system is equal to the total number of atoms minus number of |
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//atoms belong to rigid body defined in meta-data file plus the number |
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//of rigid bodies defined in meta-data file |
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nGlobalIntegrableObjects_ = nGlobalAtoms_ - nRigidAtoms |
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+ nGlobalRigidBodies_; |
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|
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nGlobalMols_ = molStampIds_.size(); |
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|
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#ifdef IS_MPI |
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molToProcMap_.resize(nGlobalMols_); |
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#endif |
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|
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} |
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|
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SimInfo::~SimInfo() { |
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std::map<int, Molecule*>::iterator i; |
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for (i = molecules_.begin(); i != molecules_.end(); ++i) { |
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delete i->second; |
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} |
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molecules_.clear(); |
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|
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delete stamps_; |
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delete sman_; |
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delete simParams_; |
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delete forceField_; |
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} |
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|
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int SimInfo::getNGlobalConstraints() { |
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int nGlobalConstraints; |
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#ifdef IS_MPI |
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MPI_Allreduce(&nConstraints_, &nGlobalConstraints, 1, MPI_INT, MPI_SUM, |
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MPI_COMM_WORLD); |
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#else |
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nGlobalConstraints = nConstraints_; |
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#endif |
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return nGlobalConstraints; |
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} |
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|
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bool SimInfo::addMolecule(Molecule* mol) { |
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MoleculeIterator i; |
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|
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i = molecules_.find(mol->getGlobalIndex()); |
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if (i == molecules_.end() ) { |
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|
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molecules_.insert(std::make_pair(mol->getGlobalIndex(), mol)); |
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|
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nAtoms_ += mol->getNAtoms(); |
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nBonds_ += mol->getNBonds(); |
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nBends_ += mol->getNBends(); |
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nTorsions_ += mol->getNTorsions(); |
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nRigidBodies_ += mol->getNRigidBodies(); |
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nIntegrableObjects_ += mol->getNIntegrableObjects(); |
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nCutoffGroups_ += mol->getNCutoffGroups(); |
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nConstraints_ += mol->getNConstraintPairs(); |
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|
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addExcludePairs(mol); |
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|
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return true; |
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} else { |
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return false; |
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} |
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} |
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|
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bool SimInfo::removeMolecule(Molecule* mol) { |
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MoleculeIterator i; |
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i = molecules_.find(mol->getGlobalIndex()); |
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|
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if (i != molecules_.end() ) { |
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|
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assert(mol == i->second); |
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|
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nAtoms_ -= mol->getNAtoms(); |
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nBonds_ -= mol->getNBonds(); |
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nBends_ -= mol->getNBends(); |
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nTorsions_ -= mol->getNTorsions(); |
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nRigidBodies_ -= mol->getNRigidBodies(); |
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nIntegrableObjects_ -= mol->getNIntegrableObjects(); |
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nCutoffGroups_ -= mol->getNCutoffGroups(); |
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nConstraints_ -= mol->getNConstraintPairs(); |
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|
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removeExcludePairs(mol); |
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molecules_.erase(mol->getGlobalIndex()); |
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|
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delete mol; |
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|
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return true; |
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} else { |
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return false; |
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} |
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|
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|
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} |
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|
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|
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Molecule* SimInfo::beginMolecule(MoleculeIterator& i) { |
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i = molecules_.begin(); |
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return i == molecules_.end() ? NULL : i->second; |
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} |
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|
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Molecule* SimInfo::nextMolecule(MoleculeIterator& i) { |
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++i; |
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return i == molecules_.end() ? NULL : i->second; |
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} |
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|
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|
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void SimInfo::calcNdf() { |
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int ndf_local; |
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MoleculeIterator i; |
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std::vector<StuntDouble*>::iterator j; |
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Molecule* mol; |
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StuntDouble* integrableObject; |
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|
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ndf_local = 0; |
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|
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for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) { |
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for (integrableObject = mol->beginIntegrableObject(j); integrableObject != NULL; |
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integrableObject = mol->nextIntegrableObject(j)) { |
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|
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ndf_local += 3; |
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|
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if (integrableObject->isDirectional()) { |
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if (integrableObject->isLinear()) { |
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ndf_local += 2; |
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} else { |
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ndf_local += 3; |
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} |
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} |
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|
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}//end for (integrableObject) |
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}// end for (mol) |
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|
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// n_constraints is local, so subtract them on each processor |
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ndf_local -= nConstraints_; |
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|
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#ifdef IS_MPI |
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MPI_Allreduce(&ndf_local,&ndf_,1,MPI_INT,MPI_SUM, MPI_COMM_WORLD); |
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#else |
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ndf_ = ndf_local; |
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#endif |
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|
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// nZconstraints_ is global, as are the 3 COM translations for the |
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// entire system: |
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ndf_ = ndf_ - 3 - nZconstraint_; |
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|
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} |
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|
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void SimInfo::calcNdfRaw() { |
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int ndfRaw_local; |
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|
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MoleculeIterator i; |
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std::vector<StuntDouble*>::iterator j; |
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Molecule* mol; |
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StuntDouble* integrableObject; |
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|
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// Raw degrees of freedom that we have to set |
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ndfRaw_local = 0; |
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|
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for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) { |
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for (integrableObject = mol->beginIntegrableObject(j); integrableObject != NULL; |
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integrableObject = mol->nextIntegrableObject(j)) { |
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|
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ndfRaw_local += 3; |
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|
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if (integrableObject->isDirectional()) { |
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if (integrableObject->isLinear()) { |
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ndfRaw_local += 2; |
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} else { |
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ndfRaw_local += 3; |
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} |
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} |
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|
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} |
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} |
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|
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#ifdef IS_MPI |
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MPI_Allreduce(&ndfRaw_local,&ndfRaw_,1,MPI_INT,MPI_SUM, MPI_COMM_WORLD); |
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#else |
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ndfRaw_ = ndfRaw_local; |
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#endif |
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} |
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|
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void SimInfo::calcNdfTrans() { |
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int ndfTrans_local; |
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|
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ndfTrans_local = 3 * nIntegrableObjects_ - nConstraints_; |
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|
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|
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#ifdef IS_MPI |
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MPI_Allreduce(&ndfTrans_local,&ndfTrans_,1,MPI_INT,MPI_SUM, MPI_COMM_WORLD); |
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#else |
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ndfTrans_ = ndfTrans_local; |
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#endif |
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|
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ndfTrans_ = ndfTrans_ - 3 - nZconstraint_; |
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|
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} |
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|
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void SimInfo::addExcludePairs(Molecule* mol) { |
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std::vector<Bond*>::iterator bondIter; |
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std::vector<Bend*>::iterator bendIter; |
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std::vector<Torsion*>::iterator torsionIter; |
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Bond* bond; |
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Bend* bend; |
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Torsion* torsion; |
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int a; |
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int b; |
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int c; |
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int d; |
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|
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for (bond= mol->beginBond(bondIter); bond != NULL; bond = mol->nextBond(bondIter)) { |
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a = bond->getAtomA()->getGlobalIndex(); |
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b = bond->getAtomB()->getGlobalIndex(); |
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exclude_.addPair(a, b); |
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} |
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|
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for (bend= mol->beginBend(bendIter); bend != NULL; bend = mol->nextBend(bendIter)) { |
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a = bend->getAtomA()->getGlobalIndex(); |
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b = bend->getAtomB()->getGlobalIndex(); |
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c = bend->getAtomC()->getGlobalIndex(); |
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|
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exclude_.addPair(a, b); |
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exclude_.addPair(a, c); |
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exclude_.addPair(b, c); |
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} |
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|
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for (torsion= mol->beginTorsion(torsionIter); torsion != NULL; torsion = mol->nextTorsion(torsionIter)) { |
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a = torsion->getAtomA()->getGlobalIndex(); |
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b = torsion->getAtomB()->getGlobalIndex(); |
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c = torsion->getAtomC()->getGlobalIndex(); |
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d = torsion->getAtomD()->getGlobalIndex(); |
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|
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exclude_.addPair(a, b); |
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exclude_.addPair(a, c); |
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exclude_.addPair(a, d); |
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exclude_.addPair(b, c); |
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exclude_.addPair(b, d); |
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exclude_.addPair(c, d); |
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} |
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|
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Molecule::RigidBodyIterator rbIter; |
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RigidBody* rb; |
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for (rb = mol->beginRigidBody(rbIter); rb != NULL; rb = mol->nextRigidBody(rbIter)) { |
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std::vector<Atom*> atoms = rb->getAtoms(); |
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for (int i = 0; i < atoms.size() -1 ; ++i) { |
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for (int j = i + 1; j < atoms.size(); ++j) { |
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a = atoms[i]->getGlobalIndex(); |
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b = atoms[j]->getGlobalIndex(); |
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exclude_.addPair(a, b); |
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} |
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} |
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} |
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|
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} |
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|
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void SimInfo::removeExcludePairs(Molecule* mol) { |
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std::vector<Bond*>::iterator bondIter; |
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std::vector<Bend*>::iterator bendIter; |
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std::vector<Torsion*>::iterator torsionIter; |
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Bond* bond; |
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Bend* bend; |
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Torsion* torsion; |
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int a; |
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int b; |
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int c; |
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int d; |
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|
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for (bond= mol->beginBond(bondIter); bond != NULL; bond = mol->nextBond(bondIter)) { |
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a = bond->getAtomA()->getGlobalIndex(); |
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b = bond->getAtomB()->getGlobalIndex(); |
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exclude_.removePair(a, b); |
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} |
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|
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for (bend= mol->beginBend(bendIter); bend != NULL; bend = mol->nextBend(bendIter)) { |
410 |
a = bend->getAtomA()->getGlobalIndex(); |
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b = bend->getAtomB()->getGlobalIndex(); |
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c = bend->getAtomC()->getGlobalIndex(); |
413 |
|
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exclude_.removePair(a, b); |
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exclude_.removePair(a, c); |
416 |
exclude_.removePair(b, c); |
417 |
} |
418 |
|
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for (torsion= mol->beginTorsion(torsionIter); torsion != NULL; torsion = mol->nextTorsion(torsionIter)) { |
420 |
a = torsion->getAtomA()->getGlobalIndex(); |
421 |
b = torsion->getAtomB()->getGlobalIndex(); |
422 |
c = torsion->getAtomC()->getGlobalIndex(); |
423 |
d = torsion->getAtomD()->getGlobalIndex(); |
424 |
|
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exclude_.removePair(a, b); |
426 |
exclude_.removePair(a, c); |
427 |
exclude_.removePair(a, d); |
428 |
exclude_.removePair(b, c); |
429 |
exclude_.removePair(b, d); |
430 |
exclude_.removePair(c, d); |
431 |
} |
432 |
|
433 |
Molecule::RigidBodyIterator rbIter; |
434 |
RigidBody* rb; |
435 |
for (rb = mol->beginRigidBody(rbIter); rb != NULL; rb = mol->nextRigidBody(rbIter)) { |
436 |
std::vector<Atom*> atoms = rb->getAtoms(); |
437 |
for (int i = 0; i < atoms.size() -1 ; ++i) { |
438 |
for (int j = i + 1; j < atoms.size(); ++j) { |
439 |
a = atoms[i]->getGlobalIndex(); |
440 |
b = atoms[j]->getGlobalIndex(); |
441 |
exclude_.removePair(a, b); |
442 |
} |
443 |
} |
444 |
} |
445 |
|
446 |
} |
447 |
|
448 |
|
449 |
void SimInfo::addMoleculeStamp(MoleculeStamp* molStamp, int nmol) { |
450 |
int curStampId; |
451 |
|
452 |
//index from 0 |
453 |
curStampId = moleculeStamps_.size(); |
454 |
|
455 |
moleculeStamps_.push_back(molStamp); |
456 |
molStampIds_.insert(molStampIds_.end(), nmol, curStampId); |
457 |
} |
458 |
|
459 |
void SimInfo::update() { |
460 |
|
461 |
setupSimType(); |
462 |
|
463 |
#ifdef IS_MPI |
464 |
setupFortranParallel(); |
465 |
#endif |
466 |
|
467 |
setupFortranSim(); |
468 |
|
469 |
//setup fortran force field |
470 |
/** @deprecate */ |
471 |
int isError = 0; |
472 |
|
473 |
setupElectrostaticSummationMethod( isError ); |
474 |
|
475 |
if(isError){ |
476 |
sprintf( painCave.errMsg, |
477 |
"ForceField error: There was an error initializing the forceField in fortran.\n" ); |
478 |
painCave.isFatal = 1; |
479 |
simError(); |
480 |
} |
481 |
|
482 |
|
483 |
setupCutoff(); |
484 |
|
485 |
calcNdf(); |
486 |
calcNdfRaw(); |
487 |
calcNdfTrans(); |
488 |
|
489 |
fortranInitialized_ = true; |
490 |
} |
491 |
|
492 |
std::set<AtomType*> SimInfo::getUniqueAtomTypes() { |
493 |
SimInfo::MoleculeIterator mi; |
494 |
Molecule* mol; |
495 |
Molecule::AtomIterator ai; |
496 |
Atom* atom; |
497 |
std::set<AtomType*> atomTypes; |
498 |
|
499 |
for(mol = beginMolecule(mi); mol != NULL; mol = nextMolecule(mi)) { |
500 |
|
501 |
for(atom = mol->beginAtom(ai); atom != NULL; atom = mol->nextAtom(ai)) { |
502 |
atomTypes.insert(atom->getAtomType()); |
503 |
} |
504 |
|
505 |
} |
506 |
|
507 |
return atomTypes; |
508 |
} |
509 |
|
510 |
void SimInfo::setupSimType() { |
511 |
std::set<AtomType*>::iterator i; |
512 |
std::set<AtomType*> atomTypes; |
513 |
atomTypes = getUniqueAtomTypes(); |
514 |
|
515 |
int useLennardJones = 0; |
516 |
int useElectrostatic = 0; |
517 |
int useEAM = 0; |
518 |
int useCharge = 0; |
519 |
int useDirectional = 0; |
520 |
int useDipole = 0; |
521 |
int useGayBerne = 0; |
522 |
int useSticky = 0; |
523 |
int useStickyPower = 0; |
524 |
int useShape = 0; |
525 |
int useFLARB = 0; //it is not in AtomType yet |
526 |
int useDirectionalAtom = 0; |
527 |
int useElectrostatics = 0; |
528 |
//usePBC and useRF are from simParams |
529 |
int usePBC = simParams_->getUsePeriodicBoundaryConditions(); |
530 |
int useRF; |
531 |
int useDW; |
532 |
std::string myMethod; |
533 |
|
534 |
// set the useRF logical |
535 |
useRF = 0; |
536 |
useDW = 0; |
537 |
|
538 |
|
539 |
if (simParams_->haveElectrostaticSummationMethod()) { |
540 |
std::string myMethod = simParams_->getElectrostaticSummationMethod(); |
541 |
toUpper(myMethod); |
542 |
if (myMethod == "REACTION_FIELD") { |
543 |
useRF=1; |
544 |
} else { |
545 |
if (myMethod == "DAMPED_WOLF") { |
546 |
useDW = 1; |
547 |
} |
548 |
} |
549 |
} |
550 |
|
551 |
//loop over all of the atom types |
552 |
for (i = atomTypes.begin(); i != atomTypes.end(); ++i) { |
553 |
useLennardJones |= (*i)->isLennardJones(); |
554 |
useElectrostatic |= (*i)->isElectrostatic(); |
555 |
useEAM |= (*i)->isEAM(); |
556 |
useCharge |= (*i)->isCharge(); |
557 |
useDirectional |= (*i)->isDirectional(); |
558 |
useDipole |= (*i)->isDipole(); |
559 |
useGayBerne |= (*i)->isGayBerne(); |
560 |
useSticky |= (*i)->isSticky(); |
561 |
useStickyPower |= (*i)->isStickyPower(); |
562 |
useShape |= (*i)->isShape(); |
563 |
} |
564 |
|
565 |
if (useSticky || useStickyPower || useDipole || useGayBerne || useShape) { |
566 |
useDirectionalAtom = 1; |
567 |
} |
568 |
|
569 |
if (useCharge || useDipole) { |
570 |
useElectrostatics = 1; |
571 |
} |
572 |
|
573 |
#ifdef IS_MPI |
574 |
int temp; |
575 |
|
576 |
temp = usePBC; |
577 |
MPI_Allreduce(&temp, &usePBC, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
578 |
|
579 |
temp = useDirectionalAtom; |
580 |
MPI_Allreduce(&temp, &useDirectionalAtom, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
581 |
|
582 |
temp = useLennardJones; |
583 |
MPI_Allreduce(&temp, &useLennardJones, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
584 |
|
585 |
temp = useElectrostatics; |
586 |
MPI_Allreduce(&temp, &useElectrostatics, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
587 |
|
588 |
temp = useCharge; |
589 |
MPI_Allreduce(&temp, &useCharge, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
590 |
|
591 |
temp = useDipole; |
592 |
MPI_Allreduce(&temp, &useDipole, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
593 |
|
594 |
temp = useSticky; |
595 |
MPI_Allreduce(&temp, &useSticky, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
596 |
|
597 |
temp = useStickyPower; |
598 |
MPI_Allreduce(&temp, &useStickyPower, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
599 |
|
600 |
temp = useGayBerne; |
601 |
MPI_Allreduce(&temp, &useGayBerne, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
602 |
|
603 |
temp = useEAM; |
604 |
MPI_Allreduce(&temp, &useEAM, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
605 |
|
606 |
temp = useShape; |
607 |
MPI_Allreduce(&temp, &useShape, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
608 |
|
609 |
temp = useFLARB; |
610 |
MPI_Allreduce(&temp, &useFLARB, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
611 |
|
612 |
temp = useRF; |
613 |
MPI_Allreduce(&temp, &useRF, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
614 |
|
615 |
temp = useDW; |
616 |
MPI_Allreduce(&temp, &useDW, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD); |
617 |
|
618 |
#endif |
619 |
|
620 |
fInfo_.SIM_uses_PBC = usePBC; |
621 |
fInfo_.SIM_uses_DirectionalAtoms = useDirectionalAtom; |
622 |
fInfo_.SIM_uses_LennardJones = useLennardJones; |
623 |
fInfo_.SIM_uses_Electrostatics = useElectrostatics; |
624 |
fInfo_.SIM_uses_Charges = useCharge; |
625 |
fInfo_.SIM_uses_Dipoles = useDipole; |
626 |
fInfo_.SIM_uses_Sticky = useSticky; |
627 |
fInfo_.SIM_uses_StickyPower = useStickyPower; |
628 |
fInfo_.SIM_uses_GayBerne = useGayBerne; |
629 |
fInfo_.SIM_uses_EAM = useEAM; |
630 |
fInfo_.SIM_uses_Shapes = useShape; |
631 |
fInfo_.SIM_uses_FLARB = useFLARB; |
632 |
fInfo_.SIM_uses_RF = useRF; |
633 |
fInfo_.SIM_uses_DampedWolf = useDW; |
634 |
|
635 |
if( myMethod == "REACTION_FIELD") { |
636 |
|
637 |
if (simParams_->haveDielectric()) { |
638 |
fInfo_.dielect = simParams_->getDielectric(); |
639 |
} else { |
640 |
sprintf(painCave.errMsg, |
641 |
"SimSetup Error: No Dielectric constant was set.\n" |
642 |
"\tYou are trying to use Reaction Field without" |
643 |
"\tsetting a dielectric constant!\n"); |
644 |
painCave.isFatal = 1; |
645 |
simError(); |
646 |
} |
647 |
} |
648 |
|
649 |
} |
650 |
|
651 |
void SimInfo::setupFortranSim() { |
652 |
int isError; |
653 |
int nExclude; |
654 |
std::vector<int> fortranGlobalGroupMembership; |
655 |
|
656 |
nExclude = exclude_.getSize(); |
657 |
isError = 0; |
658 |
|
659 |
//globalGroupMembership_ is filled by SimCreator |
660 |
for (int i = 0; i < nGlobalAtoms_; i++) { |
661 |
fortranGlobalGroupMembership.push_back(globalGroupMembership_[i] + 1); |
662 |
} |
663 |
|
664 |
//calculate mass ratio of cutoff group |
665 |
std::vector<double> mfact; |
666 |
SimInfo::MoleculeIterator mi; |
667 |
Molecule* mol; |
668 |
Molecule::CutoffGroupIterator ci; |
669 |
CutoffGroup* cg; |
670 |
Molecule::AtomIterator ai; |
671 |
Atom* atom; |
672 |
double totalMass; |
673 |
|
674 |
//to avoid memory reallocation, reserve enough space for mfact |
675 |
mfact.reserve(getNCutoffGroups()); |
676 |
|
677 |
for(mol = beginMolecule(mi); mol != NULL; mol = nextMolecule(mi)) { |
678 |
for (cg = mol->beginCutoffGroup(ci); cg != NULL; cg = mol->nextCutoffGroup(ci)) { |
679 |
|
680 |
totalMass = cg->getMass(); |
681 |
for(atom = cg->beginAtom(ai); atom != NULL; atom = cg->nextAtom(ai)) { |
682 |
// Check for massless groups - set mfact to 1 if true |
683 |
if (totalMass != 0) |
684 |
mfact.push_back(atom->getMass()/totalMass); |
685 |
else |
686 |
mfact.push_back( 1.0 ); |
687 |
} |
688 |
|
689 |
} |
690 |
} |
691 |
|
692 |
//fill ident array of local atoms (it is actually ident of AtomType, it is so confusing !!!) |
693 |
std::vector<int> identArray; |
694 |
|
695 |
//to avoid memory reallocation, reserve enough space identArray |
696 |
identArray.reserve(getNAtoms()); |
697 |
|
698 |
for(mol = beginMolecule(mi); mol != NULL; mol = nextMolecule(mi)) { |
699 |
for(atom = mol->beginAtom(ai); atom != NULL; atom = mol->nextAtom(ai)) { |
700 |
identArray.push_back(atom->getIdent()); |
701 |
} |
702 |
} |
703 |
|
704 |
//fill molMembershipArray |
705 |
//molMembershipArray is filled by SimCreator |
706 |
std::vector<int> molMembershipArray(nGlobalAtoms_); |
707 |
for (int i = 0; i < nGlobalAtoms_; i++) { |
708 |
molMembershipArray[i] = globalMolMembership_[i] + 1; |
709 |
} |
710 |
|
711 |
//setup fortran simulation |
712 |
int nGlobalExcludes = 0; |
713 |
int* globalExcludes = NULL; |
714 |
int* excludeList = exclude_.getExcludeList(); |
715 |
setFortranSim( &fInfo_, &nGlobalAtoms_, &nAtoms_, &identArray[0], &nExclude, excludeList , |
716 |
&nGlobalExcludes, globalExcludes, &molMembershipArray[0], |
717 |
&mfact[0], &nCutoffGroups_, &fortranGlobalGroupMembership[0], &isError); |
718 |
|
719 |
if( isError ){ |
720 |
|
721 |
sprintf( painCave.errMsg, |
722 |
"There was an error setting the simulation information in fortran.\n" ); |
723 |
painCave.isFatal = 1; |
724 |
painCave.severity = OOPSE_ERROR; |
725 |
simError(); |
726 |
} |
727 |
|
728 |
#ifdef IS_MPI |
729 |
sprintf( checkPointMsg, |
730 |
"succesfully sent the simulation information to fortran.\n"); |
731 |
MPIcheckPoint(); |
732 |
#endif // is_mpi |
733 |
} |
734 |
|
735 |
|
736 |
#ifdef IS_MPI |
737 |
void SimInfo::setupFortranParallel() { |
738 |
|
739 |
//SimInfo is responsible for creating localToGlobalAtomIndex and localToGlobalGroupIndex |
740 |
std::vector<int> localToGlobalAtomIndex(getNAtoms(), 0); |
741 |
std::vector<int> localToGlobalCutoffGroupIndex; |
742 |
SimInfo::MoleculeIterator mi; |
743 |
Molecule::AtomIterator ai; |
744 |
Molecule::CutoffGroupIterator ci; |
745 |
Molecule* mol; |
746 |
Atom* atom; |
747 |
CutoffGroup* cg; |
748 |
mpiSimData parallelData; |
749 |
int isError; |
750 |
|
751 |
for (mol = beginMolecule(mi); mol != NULL; mol = nextMolecule(mi)) { |
752 |
|
753 |
//local index(index in DataStorge) of atom is important |
754 |
for (atom = mol->beginAtom(ai); atom != NULL; atom = mol->nextAtom(ai)) { |
755 |
localToGlobalAtomIndex[atom->getLocalIndex()] = atom->getGlobalIndex() + 1; |
756 |
} |
757 |
|
758 |
//local index of cutoff group is trivial, it only depends on the order of travesing |
759 |
for (cg = mol->beginCutoffGroup(ci); cg != NULL; cg = mol->nextCutoffGroup(ci)) { |
760 |
localToGlobalCutoffGroupIndex.push_back(cg->getGlobalIndex() + 1); |
761 |
} |
762 |
|
763 |
} |
764 |
|
765 |
//fill up mpiSimData struct |
766 |
parallelData.nMolGlobal = getNGlobalMolecules(); |
767 |
parallelData.nMolLocal = getNMolecules(); |
768 |
parallelData.nAtomsGlobal = getNGlobalAtoms(); |
769 |
parallelData.nAtomsLocal = getNAtoms(); |
770 |
parallelData.nGroupsGlobal = getNGlobalCutoffGroups(); |
771 |
parallelData.nGroupsLocal = getNCutoffGroups(); |
772 |
parallelData.myNode = worldRank; |
773 |
MPI_Comm_size(MPI_COMM_WORLD, &(parallelData.nProcessors)); |
774 |
|
775 |
//pass mpiSimData struct and index arrays to fortran |
776 |
setFsimParallel(¶llelData, &(parallelData.nAtomsLocal), |
777 |
&localToGlobalAtomIndex[0], &(parallelData.nGroupsLocal), |
778 |
&localToGlobalCutoffGroupIndex[0], &isError); |
779 |
|
780 |
if (isError) { |
781 |
sprintf(painCave.errMsg, |
782 |
"mpiRefresh errror: fortran didn't like something we gave it.\n"); |
783 |
painCave.isFatal = 1; |
784 |
simError(); |
785 |
} |
786 |
|
787 |
sprintf(checkPointMsg, " mpiRefresh successful.\n"); |
788 |
MPIcheckPoint(); |
789 |
|
790 |
|
791 |
} |
792 |
|
793 |
#endif |
794 |
|
795 |
double SimInfo::calcMaxCutoffRadius() { |
796 |
|
797 |
|
798 |
std::set<AtomType*> atomTypes; |
799 |
std::set<AtomType*>::iterator i; |
800 |
std::vector<double> cutoffRadius; |
801 |
|
802 |
//get the unique atom types |
803 |
atomTypes = getUniqueAtomTypes(); |
804 |
|
805 |
//query the max cutoff radius among these atom types |
806 |
for (i = atomTypes.begin(); i != atomTypes.end(); ++i) { |
807 |
cutoffRadius.push_back(forceField_->getRcutFromAtomType(*i)); |
808 |
} |
809 |
|
810 |
double maxCutoffRadius = *(std::max_element(cutoffRadius.begin(), cutoffRadius.end())); |
811 |
#ifdef IS_MPI |
812 |
//pick the max cutoff radius among the processors |
813 |
#endif |
814 |
|
815 |
return maxCutoffRadius; |
816 |
} |
817 |
|
818 |
void SimInfo::getCutoff(double& rcut, double& rsw) { |
819 |
|
820 |
if (fInfo_.SIM_uses_Charges | fInfo_.SIM_uses_Dipoles | fInfo_.SIM_uses_RF) { |
821 |
|
822 |
if (!simParams_->haveCutoffRadius()){ |
823 |
sprintf(painCave.errMsg, |
824 |
"SimCreator Warning: No value was set for the cutoffRadius.\n" |
825 |
"\tOOPSE will use a default value of 15.0 angstroms" |
826 |
"\tfor the cutoffRadius.\n"); |
827 |
painCave.isFatal = 0; |
828 |
simError(); |
829 |
rcut = 15.0; |
830 |
} else{ |
831 |
rcut = simParams_->getCutoffRadius(); |
832 |
} |
833 |
|
834 |
if (!simParams_->haveSwitchingRadius()){ |
835 |
sprintf(painCave.errMsg, |
836 |
"SimCreator Warning: No value was set for switchingRadius.\n" |
837 |
"\tOOPSE will use a default value of\n" |
838 |
"\t0.85 * cutoffRadius for the switchingRadius\n"); |
839 |
painCave.isFatal = 0; |
840 |
simError(); |
841 |
rsw = 0.85 * rcut; |
842 |
} else{ |
843 |
rsw = simParams_->getSwitchingRadius(); |
844 |
} |
845 |
|
846 |
} else { |
847 |
// if charge, dipole or reaction field is not used and the cutofff radius is not specified in |
848 |
//meta-data file, the maximum cutoff radius calculated from forcefiled will be used |
849 |
|
850 |
if (simParams_->haveCutoffRadius()) { |
851 |
rcut = simParams_->getCutoffRadius(); |
852 |
} else { |
853 |
//set cutoff radius to the maximum cutoff radius based on atom types in the whole system |
854 |
rcut = calcMaxCutoffRadius(); |
855 |
} |
856 |
|
857 |
if (simParams_->haveSwitchingRadius()) { |
858 |
rsw = simParams_->getSwitchingRadius(); |
859 |
} else { |
860 |
rsw = rcut; |
861 |
} |
862 |
|
863 |
} |
864 |
} |
865 |
|
866 |
void SimInfo::setupCutoff() { |
867 |
getCutoff(rcut_, rsw_); |
868 |
double rnblist = rcut_ + 1; // skin of neighbor list |
869 |
|
870 |
//Pass these cutoff radius etc. to fortran. This function should be called once and only once |
871 |
|
872 |
int cp = TRADITIONAL_CUTOFF_POLICY; |
873 |
if (simParams_->haveCutoffPolicy()) { |
874 |
std::string myPolicy = simParams_->getCutoffPolicy(); |
875 |
toUpper(myPolicy); |
876 |
if (myPolicy == "MIX") { |
877 |
cp = MIX_CUTOFF_POLICY; |
878 |
} else { |
879 |
if (myPolicy == "MAX") { |
880 |
cp = MAX_CUTOFF_POLICY; |
881 |
} else { |
882 |
if (myPolicy == "TRADITIONAL") { |
883 |
cp = TRADITIONAL_CUTOFF_POLICY; |
884 |
} else { |
885 |
// throw error |
886 |
sprintf( painCave.errMsg, |
887 |
"SimInfo error: Unknown cutoffPolicy. (Input file specified %s .)\n\tcutoffPolicy must be one of: \"Mix\", \"Max\", or \"Traditional\".", myPolicy.c_str() ); |
888 |
painCave.isFatal = 1; |
889 |
simError(); |
890 |
} |
891 |
} |
892 |
} |
893 |
} |
894 |
|
895 |
|
896 |
if (simParams_->haveSkinThickness()) { |
897 |
double skinThickness = simParams_->getSkinThickness(); |
898 |
} |
899 |
|
900 |
notifyFortranCutoffs(&rcut_, &rsw_, &rnblist, &cp); |
901 |
// also send cutoff notification to electrostatics |
902 |
setElectrostaticCutoffRadius(&rcut_, &rsw_); |
903 |
} |
904 |
|
905 |
void SimInfo::setupElectrostaticSummationMethod( int isError ) { |
906 |
|
907 |
int errorOut; |
908 |
int esm = NONE; |
909 |
double alphaVal; |
910 |
double dielectric; |
911 |
|
912 |
errorOut = isError; |
913 |
alphaVal = simParams_->getDampingAlpha(); |
914 |
dielectric = simParams_->getDielectric(); |
915 |
|
916 |
if (simParams_->haveElectrostaticSummationMethod()) { |
917 |
std::string myMethod = simParams_->getElectrostaticSummationMethod(); |
918 |
toUpper(myMethod); |
919 |
if (myMethod == "NONE") { |
920 |
esm = NONE; |
921 |
} else { |
922 |
if (myMethod == "UNDAMPED_WOLF") { |
923 |
esm = UNDAMPED_WOLF; |
924 |
} else { |
925 |
if (myMethod == "DAMPED_WOLF") { |
926 |
esm = DAMPED_WOLF; |
927 |
if (!simParams_->haveDampingAlpha()) { |
928 |
//throw error |
929 |
sprintf( painCave.errMsg, |
930 |
"SimInfo warning: dampingAlpha was not specified in the input file. A default value of %f (1/ang) will be used for the Damped Wolf Method.", alphaVal); |
931 |
painCave.isFatal = 0; |
932 |
simError(); |
933 |
} |
934 |
} else { |
935 |
if (myMethod == "REACTION_FIELD") { |
936 |
esm = REACTION_FIELD; |
937 |
} else { |
938 |
// throw error |
939 |
sprintf( painCave.errMsg, |
940 |
"SimInfo error: Unknown electrostaticSummationMethod. (Input file specified %s .)\n\telectrostaticSummationMethod must be one of: \"none\", \"undamped_wolf\", \"damped_wolf\", or \"reaction_field\".", myMethod.c_str() ); |
941 |
painCave.isFatal = 1; |
942 |
simError(); |
943 |
} |
944 |
} |
945 |
} |
946 |
} |
947 |
} |
948 |
// let's pass some summation method variables to fortran |
949 |
setElectrostaticSummationMethod( &esm ); |
950 |
setDampedWolfAlpha( &alphaVal ); |
951 |
setReactionFieldDielectric( &dielectric ); |
952 |
initFortranFF( &esm, &errorOut ); |
953 |
} |
954 |
|
955 |
void SimInfo::addProperty(GenericData* genData) { |
956 |
properties_.addProperty(genData); |
957 |
} |
958 |
|
959 |
void SimInfo::removeProperty(const std::string& propName) { |
960 |
properties_.removeProperty(propName); |
961 |
} |
962 |
|
963 |
void SimInfo::clearProperties() { |
964 |
properties_.clearProperties(); |
965 |
} |
966 |
|
967 |
std::vector<std::string> SimInfo::getPropertyNames() { |
968 |
return properties_.getPropertyNames(); |
969 |
} |
970 |
|
971 |
std::vector<GenericData*> SimInfo::getProperties() { |
972 |
return properties_.getProperties(); |
973 |
} |
974 |
|
975 |
GenericData* SimInfo::getPropertyByName(const std::string& propName) { |
976 |
return properties_.getPropertyByName(propName); |
977 |
} |
978 |
|
979 |
void SimInfo::setSnapshotManager(SnapshotManager* sman) { |
980 |
if (sman_ == sman) { |
981 |
return; |
982 |
} |
983 |
delete sman_; |
984 |
sman_ = sman; |
985 |
|
986 |
Molecule* mol; |
987 |
RigidBody* rb; |
988 |
Atom* atom; |
989 |
SimInfo::MoleculeIterator mi; |
990 |
Molecule::RigidBodyIterator rbIter; |
991 |
Molecule::AtomIterator atomIter;; |
992 |
|
993 |
for (mol = beginMolecule(mi); mol != NULL; mol = nextMolecule(mi)) { |
994 |
|
995 |
for (atom = mol->beginAtom(atomIter); atom != NULL; atom = mol->nextAtom(atomIter)) { |
996 |
atom->setSnapshotManager(sman_); |
997 |
} |
998 |
|
999 |
for (rb = mol->beginRigidBody(rbIter); rb != NULL; rb = mol->nextRigidBody(rbIter)) { |
1000 |
rb->setSnapshotManager(sman_); |
1001 |
} |
1002 |
} |
1003 |
|
1004 |
} |
1005 |
|
1006 |
Vector3d SimInfo::getComVel(){ |
1007 |
SimInfo::MoleculeIterator i; |
1008 |
Molecule* mol; |
1009 |
|
1010 |
Vector3d comVel(0.0); |
1011 |
double totalMass = 0.0; |
1012 |
|
1013 |
|
1014 |
for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) { |
1015 |
double mass = mol->getMass(); |
1016 |
totalMass += mass; |
1017 |
comVel += mass * mol->getComVel(); |
1018 |
} |
1019 |
|
1020 |
#ifdef IS_MPI |
1021 |
double tmpMass = totalMass; |
1022 |
Vector3d tmpComVel(comVel); |
1023 |
MPI_Allreduce(&tmpMass,&totalMass,1,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1024 |
MPI_Allreduce(tmpComVel.getArrayPointer(), comVel.getArrayPointer(),3,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1025 |
#endif |
1026 |
|
1027 |
comVel /= totalMass; |
1028 |
|
1029 |
return comVel; |
1030 |
} |
1031 |
|
1032 |
Vector3d SimInfo::getCom(){ |
1033 |
SimInfo::MoleculeIterator i; |
1034 |
Molecule* mol; |
1035 |
|
1036 |
Vector3d com(0.0); |
1037 |
double totalMass = 0.0; |
1038 |
|
1039 |
for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) { |
1040 |
double mass = mol->getMass(); |
1041 |
totalMass += mass; |
1042 |
com += mass * mol->getCom(); |
1043 |
} |
1044 |
|
1045 |
#ifdef IS_MPI |
1046 |
double tmpMass = totalMass; |
1047 |
Vector3d tmpCom(com); |
1048 |
MPI_Allreduce(&tmpMass,&totalMass,1,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1049 |
MPI_Allreduce(tmpCom.getArrayPointer(), com.getArrayPointer(),3,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1050 |
#endif |
1051 |
|
1052 |
com /= totalMass; |
1053 |
|
1054 |
return com; |
1055 |
|
1056 |
} |
1057 |
|
1058 |
std::ostream& operator <<(std::ostream& o, SimInfo& info) { |
1059 |
|
1060 |
return o; |
1061 |
} |
1062 |
|
1063 |
|
1064 |
/* |
1065 |
Returns center of mass and center of mass velocity in one function call. |
1066 |
*/ |
1067 |
|
1068 |
void SimInfo::getComAll(Vector3d &com, Vector3d &comVel){ |
1069 |
SimInfo::MoleculeIterator i; |
1070 |
Molecule* mol; |
1071 |
|
1072 |
|
1073 |
double totalMass = 0.0; |
1074 |
|
1075 |
|
1076 |
for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) { |
1077 |
double mass = mol->getMass(); |
1078 |
totalMass += mass; |
1079 |
com += mass * mol->getCom(); |
1080 |
comVel += mass * mol->getComVel(); |
1081 |
} |
1082 |
|
1083 |
#ifdef IS_MPI |
1084 |
double tmpMass = totalMass; |
1085 |
Vector3d tmpCom(com); |
1086 |
Vector3d tmpComVel(comVel); |
1087 |
MPI_Allreduce(&tmpMass,&totalMass,1,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1088 |
MPI_Allreduce(tmpCom.getArrayPointer(), com.getArrayPointer(),3,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1089 |
MPI_Allreduce(tmpComVel.getArrayPointer(), comVel.getArrayPointer(),3,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1090 |
#endif |
1091 |
|
1092 |
com /= totalMass; |
1093 |
comVel /= totalMass; |
1094 |
} |
1095 |
|
1096 |
/* |
1097 |
Return intertia tensor for entire system and angular momentum Vector. |
1098 |
|
1099 |
|
1100 |
[ Ixx -Ixy -Ixz ] |
1101 |
J =| -Iyx Iyy -Iyz | |
1102 |
[ -Izx -Iyz Izz ] |
1103 |
*/ |
1104 |
|
1105 |
void SimInfo::getInertiaTensor(Mat3x3d &inertiaTensor, Vector3d &angularMomentum){ |
1106 |
|
1107 |
|
1108 |
double xx = 0.0; |
1109 |
double yy = 0.0; |
1110 |
double zz = 0.0; |
1111 |
double xy = 0.0; |
1112 |
double xz = 0.0; |
1113 |
double yz = 0.0; |
1114 |
Vector3d com(0.0); |
1115 |
Vector3d comVel(0.0); |
1116 |
|
1117 |
getComAll(com, comVel); |
1118 |
|
1119 |
SimInfo::MoleculeIterator i; |
1120 |
Molecule* mol; |
1121 |
|
1122 |
Vector3d thisq(0.0); |
1123 |
Vector3d thisv(0.0); |
1124 |
|
1125 |
double thisMass = 0.0; |
1126 |
|
1127 |
|
1128 |
|
1129 |
|
1130 |
for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) { |
1131 |
|
1132 |
thisq = mol->getCom()-com; |
1133 |
thisv = mol->getComVel()-comVel; |
1134 |
thisMass = mol->getMass(); |
1135 |
// Compute moment of intertia coefficients. |
1136 |
xx += thisq[0]*thisq[0]*thisMass; |
1137 |
yy += thisq[1]*thisq[1]*thisMass; |
1138 |
zz += thisq[2]*thisq[2]*thisMass; |
1139 |
|
1140 |
// compute products of intertia |
1141 |
xy += thisq[0]*thisq[1]*thisMass; |
1142 |
xz += thisq[0]*thisq[2]*thisMass; |
1143 |
yz += thisq[1]*thisq[2]*thisMass; |
1144 |
|
1145 |
angularMomentum += cross( thisq, thisv ) * thisMass; |
1146 |
|
1147 |
} |
1148 |
|
1149 |
|
1150 |
inertiaTensor(0,0) = yy + zz; |
1151 |
inertiaTensor(0,1) = -xy; |
1152 |
inertiaTensor(0,2) = -xz; |
1153 |
inertiaTensor(1,0) = -xy; |
1154 |
inertiaTensor(1,1) = xx + zz; |
1155 |
inertiaTensor(1,2) = -yz; |
1156 |
inertiaTensor(2,0) = -xz; |
1157 |
inertiaTensor(2,1) = -yz; |
1158 |
inertiaTensor(2,2) = xx + yy; |
1159 |
|
1160 |
#ifdef IS_MPI |
1161 |
Mat3x3d tmpI(inertiaTensor); |
1162 |
Vector3d tmpAngMom; |
1163 |
MPI_Allreduce(tmpI.getArrayPointer(), inertiaTensor.getArrayPointer(),9,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1164 |
MPI_Allreduce(tmpAngMom.getArrayPointer(), angularMomentum.getArrayPointer(),3,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1165 |
#endif |
1166 |
|
1167 |
return; |
1168 |
} |
1169 |
|
1170 |
//Returns the angular momentum of the system |
1171 |
Vector3d SimInfo::getAngularMomentum(){ |
1172 |
|
1173 |
Vector3d com(0.0); |
1174 |
Vector3d comVel(0.0); |
1175 |
Vector3d angularMomentum(0.0); |
1176 |
|
1177 |
getComAll(com,comVel); |
1178 |
|
1179 |
SimInfo::MoleculeIterator i; |
1180 |
Molecule* mol; |
1181 |
|
1182 |
Vector3d thisr(0.0); |
1183 |
Vector3d thisp(0.0); |
1184 |
|
1185 |
double thisMass; |
1186 |
|
1187 |
for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) { |
1188 |
thisMass = mol->getMass(); |
1189 |
thisr = mol->getCom()-com; |
1190 |
thisp = (mol->getComVel()-comVel)*thisMass; |
1191 |
|
1192 |
angularMomentum += cross( thisr, thisp ); |
1193 |
|
1194 |
} |
1195 |
|
1196 |
#ifdef IS_MPI |
1197 |
Vector3d tmpAngMom; |
1198 |
MPI_Allreduce(tmpAngMom.getArrayPointer(), angularMomentum.getArrayPointer(),3,MPI_DOUBLE,MPI_SUM, MPI_COMM_WORLD); |
1199 |
#endif |
1200 |
|
1201 |
return angularMomentum; |
1202 |
} |
1203 |
|
1204 |
|
1205 |
}//end namespace oopse |
1206 |
|