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Revision 1601 by gezelter, Thu Aug 4 20:04:35 2011 UTC vs.
Revision 1825 by gezelter, Wed Jan 9 19:27:52 2013 UTC

# Line 36 | Line 36
36   * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).            
37   * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).          
38   * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).          
39 < * [4]  Vardeman & Gezelter, in progress (2009).                        
39 > * [4]  Kuang & Gezelter,  J. Chem. Phys. 133, 164101 (2010).
40 > * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011).
41   */
42  
43   /**
# Line 58 | Line 59
59   #include "utils/simError.h"
60   #include "selection/SelectionManager.hpp"
61   #include "io/ForceFieldOptions.hpp"
62 < #include "UseTheForce/ForceField.hpp"
62 > #include "brains/ForceField.hpp"
63   #include "nonbonded/SwitchingFunction.hpp"
64 + #ifdef IS_MPI
65 + #include <mpi.h>
66 + #endif
67  
68   using namespace std;
69   namespace OpenMD {
# Line 68 | Line 72 | namespace OpenMD {
72      forceField_(ff), simParams_(simParams),
73      ndf_(0), fdf_local(0), ndfRaw_(0), ndfTrans_(0), nZconstraint_(0),
74      nGlobalMols_(0), nGlobalAtoms_(0), nGlobalCutoffGroups_(0),
75 <    nGlobalIntegrableObjects_(0), nGlobalRigidBodies_(0),
75 >    nGlobalIntegrableObjects_(0), nGlobalRigidBodies_(0), nGlobalFluctuatingCharges_(0),
76      nAtoms_(0), nBonds_(0),  nBends_(0), nTorsions_(0), nInversions_(0),
77      nRigidBodies_(0), nIntegrableObjects_(0), nCutoffGroups_(0),
78 <    nConstraints_(0), sman_(NULL), topologyDone_(false),
78 >    nConstraints_(0), nFluctuatingCharges_(0), sman_(NULL), topologyDone_(false),
79      calcBoxDipole_(false), useAtomicVirial_(true) {    
80      
81      MoleculeStamp* molStamp;
# Line 84 | Line 88 | namespace OpenMD {
88      
89      vector<Component*> components = simParams->getComponents();
90      
91 <    for (vector<Component*>::iterator i = components.begin(); i !=components.end(); ++i) {
91 >    for (vector<Component*>::iterator i = components.begin();
92 >         i !=components.end(); ++i) {
93        molStamp = (*i)->getMoleculeStamp();
94        nMolWithSameStamp = (*i)->getNMol();
95        
# Line 221 | Line 226 | namespace OpenMD {
226  
227  
228    void SimInfo::calcNdf() {
229 <    int ndf_local;
229 >    int ndf_local, nfq_local;
230      MoleculeIterator i;
231      vector<StuntDouble*>::iterator j;
232 +    vector<Atom*>::iterator k;
233 +
234      Molecule* mol;
235 <    StuntDouble* integrableObject;
235 >    StuntDouble* sd;
236 >    Atom* atom;
237  
238      ndf_local = 0;
239 +    nfq_local = 0;
240      
241      for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) {
242 <      for (integrableObject = mol->beginIntegrableObject(j); integrableObject != NULL;
243 <           integrableObject = mol->nextIntegrableObject(j)) {
242 >
243 >      for (sd = mol->beginIntegrableObject(j); sd != NULL;
244 >           sd = mol->nextIntegrableObject(j)) {
245  
246          ndf_local += 3;
247  
248 <        if (integrableObject->isDirectional()) {
249 <          if (integrableObject->isLinear()) {
248 >        if (sd->isDirectional()) {
249 >          if (sd->isLinear()) {
250              ndf_local += 2;
251            } else {
252              ndf_local += 3;
253            }
254          }
245            
255        }
256 +
257 +      for (atom = mol->beginFluctuatingCharge(k); atom != NULL;
258 +           atom = mol->nextFluctuatingCharge(k)) {
259 +        if (atom->isFluctuatingCharge()) {
260 +          nfq_local++;
261 +        }
262 +      }
263      }
264      
265 +    ndfLocal_ = ndf_local;
266 +
267      // n_constraints is local, so subtract them on each processor
268      ndf_local -= nConstraints_;
269  
270   #ifdef IS_MPI
271 <    MPI_Allreduce(&ndf_local,&ndf_,1,MPI_INT,MPI_SUM, MPI_COMM_WORLD);
271 >    MPI::COMM_WORLD.Allreduce(&ndf_local, &ndf_, 1, MPI::INT,MPI::SUM);
272 >    MPI::COMM_WORLD.Allreduce(&nfq_local, &nGlobalFluctuatingCharges_, 1,
273 >                              MPI::INT, MPI::SUM);
274   #else
275      ndf_ = ndf_local;
276 +    nGlobalFluctuatingCharges_ = nfq_local;
277   #endif
278  
279      // nZconstraints_ is global, as are the 3 COM translations for the
# Line 263 | Line 284 | namespace OpenMD {
284  
285    int SimInfo::getFdf() {
286   #ifdef IS_MPI
287 <    MPI_Allreduce(&fdf_local,&fdf_,1,MPI_INT,MPI_SUM, MPI_COMM_WORLD);
287 >    MPI::COMM_WORLD.Allreduce(&fdf_local, &fdf_, 1, MPI::INT, MPI::SUM);
288   #else
289      fdf_ = fdf_local;
290   #endif
# Line 295 | Line 316 | namespace OpenMD {
316      MoleculeIterator i;
317      vector<StuntDouble*>::iterator j;
318      Molecule* mol;
319 <    StuntDouble* integrableObject;
319 >    StuntDouble* sd;
320  
321      // Raw degrees of freedom that we have to set
322      ndfRaw_local = 0;
323      
324      for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) {
304      for (integrableObject = mol->beginIntegrableObject(j); integrableObject != NULL;
305           integrableObject = mol->nextIntegrableObject(j)) {
325  
326 +      for (sd = mol->beginIntegrableObject(j); sd != NULL;
327 +           sd = mol->nextIntegrableObject(j)) {
328 +
329          ndfRaw_local += 3;
330  
331 <        if (integrableObject->isDirectional()) {
332 <          if (integrableObject->isLinear()) {
331 >        if (sd->isDirectional()) {
332 >          if (sd->isLinear()) {
333              ndfRaw_local += 2;
334            } else {
335              ndfRaw_local += 3;
# Line 318 | Line 340 | namespace OpenMD {
340      }
341      
342   #ifdef IS_MPI
343 <    MPI_Allreduce(&ndfRaw_local,&ndfRaw_,1,MPI_INT,MPI_SUM, MPI_COMM_WORLD);
343 >    MPI::COMM_WORLD.Allreduce(&ndfRaw_local, &ndfRaw_, 1, MPI::INT, MPI::SUM);
344   #else
345      ndfRaw_ = ndfRaw_local;
346   #endif
# Line 331 | Line 353 | namespace OpenMD {
353  
354  
355   #ifdef IS_MPI
356 <    MPI_Allreduce(&ndfTrans_local,&ndfTrans_,1,MPI_INT,MPI_SUM, MPI_COMM_WORLD);
356 >    MPI::COMM_WORLD.Allreduce(&ndfTrans_local, &ndfTrans_, 1,
357 >                              MPI::INT, MPI::SUM);
358   #else
359      ndfTrans_ = ndfTrans_local;
360   #endif
# Line 367 | Line 390 | namespace OpenMD {
390      Molecule::RigidBodyIterator rbIter;
391      RigidBody* rb;
392      Molecule::IntegrableObjectIterator ii;
393 <    StuntDouble* integrableObject;
393 >    StuntDouble* sd;
394      
395 <    for (integrableObject = mol->beginIntegrableObject(ii);
396 <         integrableObject != NULL;
374 <         integrableObject = mol->nextIntegrableObject(ii)) {
395 >    for (sd = mol->beginIntegrableObject(ii); sd != NULL;
396 >         sd = mol->nextIntegrableObject(ii)) {
397        
398 <      if (integrableObject->isRigidBody()) {
399 <        rb = static_cast<RigidBody*>(integrableObject);
398 >      if (sd->isRigidBody()) {
399 >        rb = static_cast<RigidBody*>(sd);
400          vector<Atom*> atoms = rb->getAtoms();
401          set<int> rigidAtoms;
402          for (int i = 0; i < static_cast<int>(atoms.size()); ++i) {
# Line 385 | Line 407 | namespace OpenMD {
407          }      
408        } else {
409          set<int> oneAtomSet;
410 <        oneAtomSet.insert(integrableObject->getGlobalIndex());
411 <        atomGroups.insert(map<int, set<int> >::value_type(integrableObject->getGlobalIndex(), oneAtomSet));        
410 >        oneAtomSet.insert(sd->getGlobalIndex());
411 >        atomGroups.insert(map<int, set<int> >::value_type(sd->getGlobalIndex(), oneAtomSet));        
412        }
413      }  
414            
# Line 520 | Line 542 | namespace OpenMD {
542      Molecule::RigidBodyIterator rbIter;
543      RigidBody* rb;
544      Molecule::IntegrableObjectIterator ii;
545 <    StuntDouble* integrableObject;
545 >    StuntDouble* sd;
546      
547 <    for (integrableObject = mol->beginIntegrableObject(ii);
548 <         integrableObject != NULL;
527 <         integrableObject = mol->nextIntegrableObject(ii)) {
547 >    for (sd = mol->beginIntegrableObject(ii); sd != NULL;
548 >         sd = mol->nextIntegrableObject(ii)) {
549        
550 <      if (integrableObject->isRigidBody()) {
551 <        rb = static_cast<RigidBody*>(integrableObject);
550 >      if (sd->isRigidBody()) {
551 >        rb = static_cast<RigidBody*>(sd);
552          vector<Atom*> atoms = rb->getAtoms();
553          set<int> rigidAtoms;
554          for (int i = 0; i < static_cast<int>(atoms.size()); ++i) {
# Line 538 | Line 559 | namespace OpenMD {
559          }      
560        } else {
561          set<int> oneAtomSet;
562 <        oneAtomSet.insert(integrableObject->getGlobalIndex());
563 <        atomGroups.insert(map<int, set<int> >::value_type(integrableObject->getGlobalIndex(), oneAtomSet));        
562 >        oneAtomSet.insert(sd->getGlobalIndex());
563 >        atomGroups.insert(map<int, set<int> >::value_type(sd->getGlobalIndex(), oneAtomSet));        
564        }
565      }  
566  
# Line 763 | Line 784 | namespace OpenMD {
784  
785    void SimInfo::setupSimVariables() {
786      useAtomicVirial_ = simParams_->getUseAtomicVirial();
787 <    // we only call setAccumulateBoxDipole if the accumulateBoxDipole parameter is true
787 >    // we only call setAccumulateBoxDipole if the accumulateBoxDipole
788 >    // parameter is true
789      calcBoxDipole_ = false;
790      if ( simParams_->haveAccumulateBoxDipole() )
791        if ( simParams_->getAccumulateBoxDipole() ) {
# Line 773 | Line 795 | namespace OpenMD {
795      set<AtomType*>::iterator i;
796      set<AtomType*> atomTypes;
797      atomTypes = getSimulatedAtomTypes();    
798 <    int usesElectrostatic = 0;
799 <    int usesMetallic = 0;
800 <    int usesDirectional = 0;
798 >    bool usesElectrostatic = false;
799 >    bool usesMetallic = false;
800 >    bool usesDirectional = false;
801 >    bool usesFluctuatingCharges =  false;
802      //loop over all of the atom types
803      for (i = atomTypes.begin(); i != atomTypes.end(); ++i) {
804        usesElectrostatic |= (*i)->isElectrostatic();
805        usesMetallic |= (*i)->isMetal();
806        usesDirectional |= (*i)->isDirectional();
807 +      usesFluctuatingCharges |= (*i)->isFluctuatingCharge();
808      }
809 <    
810 < #ifdef IS_MPI    
811 <    int temp;
809 >
810 > #ifdef IS_MPI
811 >    bool temp;
812      temp = usesDirectional;
813 <    MPI_Allreduce(&temp, &usesDirectionalAtoms_, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD);    
814 <    
813 >    MPI::COMM_WORLD.Allreduce(&temp, &usesDirectionalAtoms_, 1, MPI::BOOL,
814 >                              MPI::LOR);
815 >        
816      temp = usesMetallic;
817 <    MPI_Allreduce(&temp, &usesMetallicAtoms_, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD);    
817 >    MPI::COMM_WORLD.Allreduce(&temp, &usesMetallicAtoms_, 1, MPI::BOOL,
818 >                              MPI::LOR);
819      
820      temp = usesElectrostatic;
821 <    MPI_Allreduce(&temp, &usesElectrostaticAtoms_, 1, MPI_INT, MPI_LOR, MPI_COMM_WORLD);
821 >    MPI::COMM_WORLD.Allreduce(&temp, &usesElectrostaticAtoms_, 1, MPI::BOOL,
822 >                              MPI::LOR);
823 >
824 >    temp = usesFluctuatingCharges;
825 >    MPI::COMM_WORLD.Allreduce(&temp, &usesFluctuatingCharges_, 1, MPI::BOOL,
826 >                              MPI::LOR);
827   #else
828  
829      usesDirectionalAtoms_ = usesDirectional;
830      usesMetallicAtoms_ = usesMetallic;
831      usesElectrostaticAtoms_ = usesElectrostatic;
832 +    usesFluctuatingCharges_ = usesFluctuatingCharges;
833  
834   #endif
835      
# Line 847 | Line 879 | namespace OpenMD {
879  
880  
881    void SimInfo::prepareTopology() {
850    int nExclude, nOneTwo, nOneThree, nOneFour;
882  
883      //calculate mass ratio of cutoff group
884      SimInfo::MoleculeIterator mi;
# Line 896 | Line 927 | namespace OpenMD {
927      
928      //scan topology
929  
899    nExclude = excludedInteractions_.getSize();
900    nOneTwo = oneTwoInteractions_.getSize();
901    nOneThree = oneThreeInteractions_.getSize();
902    nOneFour = oneFourInteractions_.getSize();
903
930      int* excludeList = excludedInteractions_.getPairList();
931      int* oneTwoList = oneTwoInteractions_.getPairList();
932      int* oneThreeList = oneThreeInteractions_.getPairList();
# Line 951 | Line 977 | namespace OpenMD {
977  
978      for (mol = beginMolecule(mi); mol != NULL; mol = nextMolecule(mi)) {
979          
980 <      for (atom = mol->beginAtom(atomIter); atom != NULL; atom = mol->nextAtom(atomIter)) {
980 >      for (atom = mol->beginAtom(atomIter); atom != NULL;
981 >           atom = mol->nextAtom(atomIter)) {
982          atom->setSnapshotManager(sman_);
983        }
984          
985 <      for (rb = mol->beginRigidBody(rbIter); rb != NULL; rb = mol->nextRigidBody(rbIter)) {
985 >      for (rb = mol->beginRigidBody(rbIter); rb != NULL;
986 >           rb = mol->nextRigidBody(rbIter)) {
987          rb->setSnapshotManager(sman_);
988        }
989  
990 <      for (cg = mol->beginCutoffGroup(cgIter); cg != NULL; cg = mol->nextCutoffGroup(cgIter)) {
990 >      for (cg = mol->beginCutoffGroup(cgIter); cg != NULL;
991 >           cg = mol->nextCutoffGroup(cgIter)) {
992          cg->setSnapshotManager(sman_);
993        }
994      }    
995      
996    }
997  
969  Vector3d SimInfo::getComVel(){
970    SimInfo::MoleculeIterator i;
971    Molecule* mol;
998  
973    Vector3d comVel(0.0);
974    RealType totalMass = 0.0;
975    
976
977    for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) {
978      RealType mass = mol->getMass();
979      totalMass += mass;
980      comVel += mass * mol->getComVel();
981    }  
982
983 #ifdef IS_MPI
984    RealType tmpMass = totalMass;
985    Vector3d tmpComVel(comVel);    
986    MPI_Allreduce(&tmpMass,&totalMass,1,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
987    MPI_Allreduce(tmpComVel.getArrayPointer(), comVel.getArrayPointer(),3,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
988 #endif
989
990    comVel /= totalMass;
991
992    return comVel;
993  }
994
995  Vector3d SimInfo::getCom(){
996    SimInfo::MoleculeIterator i;
997    Molecule* mol;
998
999    Vector3d com(0.0);
1000    RealType totalMass = 0.0;
1001    
1002    for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) {
1003      RealType mass = mol->getMass();
1004      totalMass += mass;
1005      com += mass * mol->getCom();
1006    }  
1007
1008 #ifdef IS_MPI
1009    RealType tmpMass = totalMass;
1010    Vector3d tmpCom(com);    
1011    MPI_Allreduce(&tmpMass,&totalMass,1,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
1012    MPI_Allreduce(tmpCom.getArrayPointer(), com.getArrayPointer(),3,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
1013 #endif
1014
1015    com /= totalMass;
1016
1017    return com;
1018
1019  }        
1020
999    ostream& operator <<(ostream& o, SimInfo& info) {
1000  
1001      return o;
1002    }
1025  
1026  
1027   /*
1028   Returns center of mass and center of mass velocity in one function call.
1029   */
1030  
1031   void SimInfo::getComAll(Vector3d &com, Vector3d &comVel){
1032      SimInfo::MoleculeIterator i;
1033      Molecule* mol;
1034      
1035    
1036      RealType totalMass = 0.0;
1037    
1038
1039      for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) {
1040         RealType mass = mol->getMass();
1041         totalMass += mass;
1042         com += mass * mol->getCom();
1043         comVel += mass * mol->getComVel();          
1044      }  
1045      
1046 #ifdef IS_MPI
1047      RealType tmpMass = totalMass;
1048      Vector3d tmpCom(com);  
1049      Vector3d tmpComVel(comVel);
1050      MPI_Allreduce(&tmpMass,&totalMass,1,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
1051      MPI_Allreduce(tmpCom.getArrayPointer(), com.getArrayPointer(),3,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
1052      MPI_Allreduce(tmpComVel.getArrayPointer(), comVel.getArrayPointer(),3,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
1053 #endif
1054      
1055      com /= totalMass;
1056      comVel /= totalMass;
1057   }        
1003    
1004 <   /*
1060 <   Return intertia tensor for entire system and angular momentum Vector.
1061 <
1062 <
1063 <       [  Ixx -Ixy  -Ixz ]
1064 <    J =| -Iyx  Iyy  -Iyz |
1065 <       [ -Izx -Iyz   Izz ]
1066 <    */
1067 <
1068 <   void SimInfo::getInertiaTensor(Mat3x3d &inertiaTensor, Vector3d &angularMomentum){
1069 <      
1070 <
1071 <      RealType xx = 0.0;
1072 <      RealType yy = 0.0;
1073 <      RealType zz = 0.0;
1074 <      RealType xy = 0.0;
1075 <      RealType xz = 0.0;
1076 <      RealType yz = 0.0;
1077 <      Vector3d com(0.0);
1078 <      Vector3d comVel(0.0);
1079 <      
1080 <      getComAll(com, comVel);
1081 <      
1082 <      SimInfo::MoleculeIterator i;
1083 <      Molecule* mol;
1084 <      
1085 <      Vector3d thisq(0.0);
1086 <      Vector3d thisv(0.0);
1087 <
1088 <      RealType thisMass = 0.0;
1089 <    
1090 <      
1091 <      
1092 <  
1093 <      for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) {
1094 <        
1095 <         thisq = mol->getCom()-com;
1096 <         thisv = mol->getComVel()-comVel;
1097 <         thisMass = mol->getMass();
1098 <         // Compute moment of intertia coefficients.
1099 <         xx += thisq[0]*thisq[0]*thisMass;
1100 <         yy += thisq[1]*thisq[1]*thisMass;
1101 <         zz += thisq[2]*thisq[2]*thisMass;
1102 <        
1103 <         // compute products of intertia
1104 <         xy += thisq[0]*thisq[1]*thisMass;
1105 <         xz += thisq[0]*thisq[2]*thisMass;
1106 <         yz += thisq[1]*thisq[2]*thisMass;
1107 <            
1108 <         angularMomentum += cross( thisq, thisv ) * thisMass;
1109 <            
1110 <      }  
1111 <      
1112 <      
1113 <      inertiaTensor(0,0) = yy + zz;
1114 <      inertiaTensor(0,1) = -xy;
1115 <      inertiaTensor(0,2) = -xz;
1116 <      inertiaTensor(1,0) = -xy;
1117 <      inertiaTensor(1,1) = xx + zz;
1118 <      inertiaTensor(1,2) = -yz;
1119 <      inertiaTensor(2,0) = -xz;
1120 <      inertiaTensor(2,1) = -yz;
1121 <      inertiaTensor(2,2) = xx + yy;
1122 <      
1123 < #ifdef IS_MPI
1124 <      Mat3x3d tmpI(inertiaTensor);
1125 <      Vector3d tmpAngMom;
1126 <      MPI_Allreduce(tmpI.getArrayPointer(), inertiaTensor.getArrayPointer(),9,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
1127 <      MPI_Allreduce(tmpAngMom.getArrayPointer(), angularMomentum.getArrayPointer(),3,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
1128 < #endif
1129 <              
1130 <      return;
1131 <   }
1132 <
1133 <   //Returns the angular momentum of the system
1134 <   Vector3d SimInfo::getAngularMomentum(){
1135 <      
1136 <      Vector3d com(0.0);
1137 <      Vector3d comVel(0.0);
1138 <      Vector3d angularMomentum(0.0);
1139 <      
1140 <      getComAll(com,comVel);
1141 <      
1142 <      SimInfo::MoleculeIterator i;
1143 <      Molecule* mol;
1144 <      
1145 <      Vector3d thisr(0.0);
1146 <      Vector3d thisp(0.0);
1147 <      
1148 <      RealType thisMass;
1149 <      
1150 <      for (mol = beginMolecule(i); mol != NULL; mol = nextMolecule(i)) {        
1151 <        thisMass = mol->getMass();
1152 <        thisr = mol->getCom()-com;
1153 <        thisp = (mol->getComVel()-comVel)*thisMass;
1154 <        
1155 <        angularMomentum += cross( thisr, thisp );
1156 <        
1157 <      }  
1158 <      
1159 < #ifdef IS_MPI
1160 <      Vector3d tmpAngMom;
1161 <      MPI_Allreduce(tmpAngMom.getArrayPointer(), angularMomentum.getArrayPointer(),3,MPI_REALTYPE,MPI_SUM, MPI_COMM_WORLD);
1162 < #endif
1163 <      
1164 <      return angularMomentum;
1165 <   }
1166 <  
1004 >  
1005    StuntDouble* SimInfo::getIOIndexToIntegrableObject(int index) {
1006 <    return IOIndexToIntegrableObject.at(index);
1006 >    if (index >= IOIndexToIntegrableObject.size()) {
1007 >      sprintf(painCave.errMsg,
1008 >              "SimInfo::getIOIndexToIntegrableObject Error: Integrable Object\n"
1009 >              "\tindex exceeds number of known objects!\n");
1010 >      painCave.isFatal = 1;
1011 >      simError();
1012 >      return NULL;
1013 >    } else
1014 >      return IOIndexToIntegrableObject.at(index);
1015    }
1016    
1017    void SimInfo::setIOIndexToIntegrableObject(const vector<StuntDouble*>& v) {
1018      IOIndexToIntegrableObject= v;
1019    }
1020  
1175  /* Returns the Volume of the simulation based on a ellipsoid with semi-axes
1176     based on the radius of gyration V=4/3*Pi*R_1*R_2*R_3
1177     where R_i are related to the principle inertia moments R_i = sqrt(C*I_i/N), this reduces to
1178     V = 4/3*Pi*(C/N)^3/2*sqrt(det(I)). See S.E. Baltazar et. al. Comp. Mat. Sci. 37 (2006) 526-536.
1179  */
1180  void SimInfo::getGyrationalVolume(RealType &volume){
1181    Mat3x3d intTensor;
1182    RealType det;
1183    Vector3d dummyAngMom;
1184    RealType sysconstants;
1185    RealType geomCnst;
1186
1187    geomCnst = 3.0/2.0;
1188    /* Get the inertial tensor and angular momentum for free*/
1189    getInertiaTensor(intTensor,dummyAngMom);
1190    
1191    det = intTensor.determinant();
1192    sysconstants = geomCnst/(RealType)nGlobalIntegrableObjects_;
1193    volume = 4.0/3.0*NumericConstant::PI*pow(sysconstants,3.0/2.0)*sqrt(det);
1194    return;
1195  }
1196
1197  void SimInfo::getGyrationalVolume(RealType &volume, RealType &detI){
1198    Mat3x3d intTensor;
1199    Vector3d dummyAngMom;
1200    RealType sysconstants;
1201    RealType geomCnst;
1202
1203    geomCnst = 3.0/2.0;
1204    /* Get the inertial tensor and angular momentum for free*/
1205    getInertiaTensor(intTensor,dummyAngMom);
1206    
1207    detI = intTensor.determinant();
1208    sysconstants = geomCnst/(RealType)nGlobalIntegrableObjects_;
1209    volume = 4.0/3.0*NumericConstant::PI*pow(sysconstants,3.0/2.0)*sqrt(detI);
1210    return;
1211  }
1212 /*
1213   void SimInfo::setStuntDoubleFromGlobalIndex(vector<StuntDouble*> v) {
1214      assert( v.size() == nAtoms_ + nRigidBodies_);
1215      sdByGlobalIndex_ = v;
1216    }
1217
1218    StuntDouble* SimInfo::getStuntDoubleFromGlobalIndex(int index) {
1219      //assert(index < nAtoms_ + nRigidBodies_);
1220      return sdByGlobalIndex_.at(index);
1221    }  
1222 */  
1021    int SimInfo::getNGlobalConstraints() {
1022      int nGlobalConstraints;
1023   #ifdef IS_MPI
1024 <    MPI_Allreduce(&nConstraints_, &nGlobalConstraints, 1, MPI_INT, MPI_SUM,
1025 <                  MPI_COMM_WORLD);    
1024 >    MPI::COMM_WORLD.Allreduce(&nConstraints_, &nGlobalConstraints, 1,
1025 >                              MPI::INT, MPI::SUM);
1026   #else
1027      nGlobalConstraints =  nConstraints_;
1028   #endif

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