--- trunk/src/integrators/RNEMD.cpp 2009/03/19 21:03:36 1330 +++ branches/development/src/rnemd/RNEMD.cpp 2012/08/07 18:26:40 1773 @@ -6,19 +6,10 @@ * redistribute this software in source and binary code form, provided * that the following conditions are met: * - * 1. Acknowledgement of the program authors must be made in any - * publication of scientific results based in part on use of the - * program. An acceptable form of acknowledgement is citation of - * the article in which the program was described (Matthew - * A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher - * J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented - * Parallel Simulation Engine for Molecular Dynamics," - * J. Comput. Chem. 26, pp. 252-271 (2005)) - * - * 2. Redistributions of source code must retain the above copyright + * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - * 3. Redistributions in binary form must reproduce the above copyright + * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the * distribution. @@ -37,76 +28,1693 @@ * arising out of the use of or inability to use software, even if the * University of Notre Dame has been advised of the possibility of * such damages. + * + * SUPPORT OPEN SCIENCE! If you use OpenMD or its source code in your + * research, please cite the appropriate papers when you publish your + * work. Good starting points are: + * + * [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005). + * [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006). + * [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008). + * [4] Vardeman & Gezelter, in progress (2009). */ -#include "integrators/RNEMD.hpp" +#include +#include "rnemd/RNEMD.hpp" +#include "math/Vector3.hpp" +#include "math/Vector.hpp" #include "math/SquareMatrix3.hpp" +#include "math/Polynomial.hpp" #include "primitives/Molecule.hpp" #include "primitives/StuntDouble.hpp" - -#ifndef IS_MPI -#include "math/SeqRandNumGen.hpp" -#else -#include "math/ParallelRandNumGen.hpp" +#include "utils/PhysicalConstants.hpp" +#include "utils/Tuple.hpp" +#ifdef IS_MPI +#include #endif -/* Remove me after testing*/ -/* -#include -#include -*/ -/*End remove me*/ +#define HONKING_LARGE_VALUE 1.0e10 -namespace oopse { +using namespace std; +namespace OpenMD { - RNEMD::RNEMD(SimInfo* info) : info_(info) { - + RNEMD::RNEMD(SimInfo* info) : info_(info), evaluator_(info), seleMan_(info), + usePeriodicBoundaryConditions_(info->getSimParams()->getUsePeriodicBoundaryConditions()) { + + trialCount_ = 0; + failTrialCount_ = 0; + failRootCount_ = 0; + int seedValue; Globals * simParams = info->getSimParams(); + RNEMDParameters* rnemdParams = simParams->getRNEMDParameters(); - stringToEnumMap_["Kinetic"] = rnemdKinetic; - stringToEnumMap_["Px"] = rnemdPx; - stringToEnumMap_["Py"] = rnemdPy; - stringToEnumMap_["Pz"] = rnemdPz; - stringToEnumMap_["Unknown"] = rnemdUnknown; + stringToMethod_["Swap"] = rnemdSwap; + stringToMethod_["NIVS"] = rnemdNIVS; + stringToMethod_["VSS"] = rnemdVSS; - const std::string st = simParams->getRNEMD_swapType(); + stringToFluxType_["KE"] = rnemdKE; + stringToFluxType_["Px"] = rnemdPx; + stringToFluxType_["Py"] = rnemdPy; + stringToFluxType_["Pz"] = rnemdPz; + stringToFluxType_["KE+Px"] = rnemdKePx; + stringToFluxType_["KE+Py"] = rnemdKePy; + stringToFluxType_["KE+Pvector"] = rnemdKePvector; - std::map::iterator i; - i = stringToEnumMap_.find(st); - rnemdType_ = (i == stringToEnumMap_.end()) ? RNEMD::rnemdUnknown : i->second; + runTime_ = simParams->getRunTime(); + statusTime_ = simParams->getStatusTime(); + rnemdObjectSelection_ = rnemdParams->getObjectSelection(); + evaluator_.loadScriptString(rnemdObjectSelection_); + seleMan_.setSelectionSet(evaluator_.evaluate()); - set_RNEMD_swapTime(simParams->getRNEMD_swapTime()); - set_RNEMD_nBins(simParams->getRNEMD_nBins()); - exchangeSum_ = 0.0; + const string methStr = rnemdParams->getMethod(); + bool hasFluxType = rnemdParams->haveFluxType(); + + string fluxStr; + if (hasFluxType) { + fluxStr = rnemdParams->getFluxType(); + } else { + sprintf(painCave.errMsg, + "RNEMD: No fluxType was set in the md file. This parameter,\n" + "\twhich must be one of the following values:\n" + "\tKE, Px, Py, Pz, KE+Px, KE+Py, KE+Pvector, must be set to\n" + "\tuse RNEMD\n"); + painCave.isFatal = 1; + painCave.severity = OPENMD_ERROR; + simError(); + } + + bool hasKineticFlux = rnemdParams->haveKineticFlux(); + bool hasMomentumFlux = rnemdParams->haveMomentumFlux(); + bool hasMomentumFluxVector = rnemdParams->haveMomentumFluxVector(); + bool hasSlabWidth = rnemdParams->haveSlabWidth(); + bool hasSlabACenter = rnemdParams->haveSlabACenter(); + bool hasSlabBCenter = rnemdParams->haveSlabBCenter(); + bool hasOutputFileName = rnemdParams->haveOutputFileName(); + bool hasOutputFields = rnemdParams->haveOutputFields(); -#ifndef IS_MPI - if (simParams->haveSeed()) { - seedValue = simParams->getSeed(); - randNumGen_ = new SeqRandNumGen(seedValue); - }else { - randNumGen_ = new SeqRandNumGen(); - } -#else - if (simParams->haveSeed()) { - seedValue = simParams->getSeed(); - randNumGen_ = new ParallelRandNumGen(seedValue); - }else { - randNumGen_ = new ParallelRandNumGen(); - } -#endif - } + map::iterator i; + i = stringToMethod_.find(methStr); + if (i != stringToMethod_.end()) + rnemdMethod_ = i->second; + else { + sprintf(painCave.errMsg, + "RNEMD: The current method,\n" + "\t\t%s is not one of the recognized\n" + "\texchange methods: Swap, NIVS, or VSS\n", + methStr.c_str()); + painCave.isFatal = 1; + painCave.severity = OPENMD_ERROR; + simError(); + } + + map::iterator j; + j = stringToFluxType_.find(fluxStr); + if (j != stringToFluxType_.end()) + rnemdFluxType_ = j->second; + else { + sprintf(painCave.errMsg, + "RNEMD: The current fluxType,\n" + "\t\t%s\n" + "\tis not one of the recognized flux types.\n", + fluxStr.c_str()); + painCave.isFatal = 1; + painCave.severity = OPENMD_ERROR; + simError(); + } + + bool methodFluxMismatch = false; + bool hasCorrectFlux = false; + switch(rnemdMethod_) { + case rnemdSwap: + switch (rnemdFluxType_) { + case rnemdKE: + hasCorrectFlux = hasKineticFlux; + break; + case rnemdPx: + case rnemdPy: + case rnemdPz: + hasCorrectFlux = hasMomentumFlux; + break; + default : + methodFluxMismatch = true; + break; + } + break; + case rnemdNIVS: + switch (rnemdFluxType_) { + case rnemdKE: + case rnemdRotKE: + case rnemdFullKE: + hasCorrectFlux = hasKineticFlux; + break; + case rnemdPx: + case rnemdPy: + case rnemdPz: + hasCorrectFlux = hasMomentumFlux; + break; + case rnemdKePx: + case rnemdKePy: + hasCorrectFlux = hasMomentumFlux && hasKineticFlux; + break; + default: + methodFluxMismatch = true; + break; + } + break; + case rnemdVSS: + switch (rnemdFluxType_) { + case rnemdKE: + case rnemdRotKE: + case rnemdFullKE: + hasCorrectFlux = hasKineticFlux; + break; + case rnemdPx: + case rnemdPy: + case rnemdPz: + hasCorrectFlux = hasMomentumFlux; + break; + case rnemdPvector: + hasCorrectFlux = hasMomentumFluxVector; + case rnemdKePx: + case rnemdKePy: + hasCorrectFlux = hasMomentumFlux && hasKineticFlux; + break; + case rnemdKePvector: + hasCorrectFlux = hasMomentumFluxVector && hasKineticFlux; + break; + default: + methodFluxMismatch = true; + break; + } + default: + break; + } + + if (methodFluxMismatch) { + sprintf(painCave.errMsg, + "RNEMD: The current method,\n" + "\t\t%s\n" + "\tcannot be used with the current flux type, %s\n", + methStr.c_str(), fluxStr.c_str()); + painCave.isFatal = 1; + painCave.severity = OPENMD_ERROR; + simError(); + } + if (!hasCorrectFlux) { + sprintf(painCave.errMsg, + "RNEMD: The current method,\n" + "\t%s, and flux type %s\n" + "\tdid not have the correct flux value specified. Options\n" + "\tinclude: kineticFlux, momentumFlux, and momentumFluxVector\n", + methStr.c_str(), fluxStr.c_str()); + painCave.isFatal = 1; + painCave.severity = OPENMD_ERROR; + simError(); + } + + if (hasKineticFlux) { + kineticFlux_ = rnemdParams->getKineticFlux(); + } else { + kineticFlux_ = 0.0; + } + if (hasMomentumFluxVector) { + momentumFluxVector_ = rnemdParams->getMomentumFluxVector(); + } else { + momentumFluxVector_ = V3Zero; + if (hasMomentumFlux) { + RealType momentumFlux = rnemdParams->getMomentumFlux(); + switch (rnemdFluxType_) { + case rnemdPx: + momentumFluxVector_.x() = momentumFlux; + break; + case rnemdPy: + momentumFluxVector_.y() = momentumFlux; + break; + case rnemdPz: + momentumFluxVector_.z() = momentumFlux; + break; + case rnemdKePx: + momentumFluxVector_.x() = momentumFlux; + break; + case rnemdKePy: + momentumFluxVector_.y() = momentumFlux; + break; + default: + break; + } + } + } + + // do some sanity checking + + int selectionCount = seleMan_.getSelectionCount(); + int nIntegrable = info->getNGlobalIntegrableObjects(); + + if (selectionCount > nIntegrable) { + sprintf(painCave.errMsg, + "RNEMD: The current objectSelection,\n" + "\t\t%s\n" + "\thas resulted in %d selected objects. However,\n" + "\tthe total number of integrable objects in the system\n" + "\tis only %d. This is almost certainly not what you want\n" + "\tto do. A likely cause of this is forgetting the _RB_0\n" + "\tselector in the selection script!\n", + rnemdObjectSelection_.c_str(), + selectionCount, nIntegrable); + painCave.isFatal = 0; + painCave.severity = OPENMD_WARNING; + simError(); + } + + nBins_ = rnemdParams->getOutputBins(); + + data_.resize(RNEMD::ENDINDEX); + OutputData z; + z.units = "Angstroms"; + z.title = "Z"; + z.dataType = "RealType"; + z.accumulator.reserve(nBins_); + for (unsigned int i = 0; i < nBins_; i++) + z.accumulator.push_back( new Accumulator() ); + data_[Z] = z; + outputMap_["Z"] = Z; + + OutputData temperature; + temperature.units = "K"; + temperature.title = "Temperature"; + temperature.dataType = "RealType"; + temperature.accumulator.reserve(nBins_); + for (unsigned int i = 0; i < nBins_; i++) + temperature.accumulator.push_back( new Accumulator() ); + data_[TEMPERATURE] = temperature; + outputMap_["TEMPERATURE"] = TEMPERATURE; + + OutputData velocity; + velocity.units = "amu/fs"; + velocity.title = "Velocity"; + velocity.dataType = "Vector3d"; + velocity.accumulator.reserve(nBins_); + for (unsigned int i = 0; i < nBins_; i++) + velocity.accumulator.push_back( new VectorAccumulator() ); + data_[VELOCITY] = velocity; + outputMap_["VELOCITY"] = VELOCITY; + + OutputData density; + density.units = "g cm^-3"; + density.title = "Density"; + density.dataType = "RealType"; + density.accumulator.reserve(nBins_); + for (unsigned int i = 0; i < nBins_; i++) + density.accumulator.push_back( new Accumulator() ); + data_[DENSITY] = density; + outputMap_["DENSITY"] = DENSITY; + + if (hasOutputFields) { + parseOutputFileFormat(rnemdParams->getOutputFields()); + } else { + outputMask_.set(Z); + switch (rnemdFluxType_) { + case rnemdKE: + case rnemdRotKE: + case rnemdFullKE: + outputMask_.set(TEMPERATURE); + break; + case rnemdPx: + case rnemdPy: + outputMask_.set(VELOCITY); + break; + case rnemdPz: + case rnemdPvector: + outputMask_.set(VELOCITY); + outputMask_.set(DENSITY); + break; + case rnemdKePx: + case rnemdKePy: + outputMask_.set(TEMPERATURE); + outputMask_.set(VELOCITY); + break; + case rnemdKePvector: + outputMask_.set(TEMPERATURE); + outputMask_.set(VELOCITY); + outputMask_.set(DENSITY); + break; + default: + break; + } + } + + if (hasOutputFileName) { + rnemdFileName_ = rnemdParams->getOutputFileName(); + } else { + rnemdFileName_ = getPrefix(info->getFinalConfigFileName()) + ".rnemd"; + } + + exchangeTime_ = rnemdParams->getExchangeTime(); + + Snapshot* currentSnap_ = info->getSnapshotManager()->getCurrentSnapshot(); + Mat3x3d hmat = currentSnap_->getHmat(); + // Target exchange quantities (in each exchange) = 2 Lx Ly dt flux + // Lx, Ly = box dimensions in x & y + // dt = exchange time interval + // flux = target flux + + kineticTarget_ = 2.0*kineticFlux_*exchangeTime_*hmat(0,0)*hmat(1,1); + momentumTarget_ = 2.0*momentumFluxVector_*exchangeTime_*hmat(0,0)*hmat(1,1); + + // total exchange sums are zeroed out at the beginning: + + kineticExchange_ = 0.0; + momentumExchange_ = V3Zero; + + if (hasSlabWidth) + slabWidth_ = rnemdParams->getSlabWidth(); + else + slabWidth_ = hmat(2,2) / 10.0; + + if (hasSlabACenter) + slabACenter_ = rnemdParams->getSlabACenter(); + else + slabACenter_ = 0.0; + + if (hasSlabBCenter) + slabBCenter_ = rnemdParams->getSlabBCenter(); + else + slabBCenter_ = hmat(2,2) / 2.0; + + } + RNEMD::~RNEMD() { - delete randNumGen_; + +#ifdef IS_MPI + if (worldRank == 0) { +#endif + + writeOutputFile(); + + rnemdFile_.close(); + +#ifdef IS_MPI + } +#endif } + + bool RNEMD::inSlabA(Vector3d pos) { + return (abs(pos.z() - slabACenter_) < 0.5*slabWidth_); + } + bool RNEMD::inSlabB(Vector3d pos) { + return (abs(pos.z() - slabBCenter_) < 0.5*slabWidth_); + } void RNEMD::doSwap() { - std::cerr << "in RNEMD!\n"; - std::cerr << "nBins = " << nBins_ << "\n"; - std::cerr << "swapTime = " << swapTime_ << "\n"; - std::cerr << "exchangeSum = " << exchangeSum_ << "\n"; - std::cerr << "swapType = " << rnemdType_ << "\n"; - } + + Snapshot* currentSnap_ = info_->getSnapshotManager()->getCurrentSnapshot(); + Mat3x3d hmat = currentSnap_->getHmat(); + + seleMan_.setSelectionSet(evaluator_.evaluate()); + + int selei; + StuntDouble* sd; + int idx; + + RealType min_val; + bool min_found = false; + StuntDouble* min_sd; + + RealType max_val; + bool max_found = false; + StuntDouble* max_sd; + + for (sd = seleMan_.beginSelected(selei); sd != NULL; + sd = seleMan_.nextSelected(selei)) { + + idx = sd->getLocalIndex(); + + Vector3d pos = sd->getPos(); + + // wrap the stuntdouble's position back into the box: + + if (usePeriodicBoundaryConditions_) + currentSnap_->wrapVector(pos); + bool inA = inSlabA(pos); + bool inB = inSlabB(pos); + + if (inA || inB) { + + RealType mass = sd->getMass(); + Vector3d vel = sd->getVel(); + RealType value; + + switch(rnemdFluxType_) { + case rnemdKE : + + value = mass * vel.lengthSquare(); + + if (sd->isDirectional()) { + Vector3d angMom = sd->getJ(); + Mat3x3d I = sd->getI(); + + if (sd->isLinear()) { + int i = sd->linearAxis(); + int j = (i + 1) % 3; + int k = (i + 2) % 3; + value += angMom[j] * angMom[j] / I(j, j) + + angMom[k] * angMom[k] / I(k, k); + } else { + value += angMom[0]*angMom[0]/I(0, 0) + + angMom[1]*angMom[1]/I(1, 1) + + angMom[2]*angMom[2]/I(2, 2); + } + } //angular momenta exchange enabled + //energyConvert temporarily disabled + //make kineticExchange_ comparable between swap & scale + //value = value * 0.5 / PhysicalConstants::energyConvert; + value *= 0.5; + break; + case rnemdPx : + value = mass * vel[0]; + break; + case rnemdPy : + value = mass * vel[1]; + break; + case rnemdPz : + value = mass * vel[2]; + break; + default : + break; + } + + if (inA == 0) { + if (!min_found) { + min_val = value; + min_sd = sd; + min_found = true; + } else { + if (min_val > value) { + min_val = value; + min_sd = sd; + } + } + } else { + if (!max_found) { + max_val = value; + max_sd = sd; + max_found = true; + } else { + if (max_val < value) { + max_val = value; + max_sd = sd; + } + } + } + } + } + +#ifdef IS_MPI + int nProc, worldRank; + + nProc = MPI::COMM_WORLD.Get_size(); + worldRank = MPI::COMM_WORLD.Get_rank(); + + bool my_min_found = min_found; + bool my_max_found = max_found; + + // Even if we didn't find a minimum, did someone else? + MPI::COMM_WORLD.Allreduce(&my_min_found, &min_found, 1, MPI::BOOL, MPI::LOR); + // Even if we didn't find a maximum, did someone else? + MPI::COMM_WORLD.Allreduce(&my_max_found, &max_found, 1, MPI::BOOL, MPI::LOR); +#endif + + if (max_found && min_found) { + +#ifdef IS_MPI + struct { + RealType val; + int rank; + } max_vals, min_vals; + + if (my_min_found) { + min_vals.val = min_val; + } else { + min_vals.val = HONKING_LARGE_VALUE; + } + min_vals.rank = worldRank; + + // Who had the minimum? + MPI::COMM_WORLD.Allreduce(&min_vals, &min_vals, + 1, MPI::REALTYPE_INT, MPI::MINLOC); + min_val = min_vals.val; + + if (my_max_found) { + max_vals.val = max_val; + } else { + max_vals.val = -HONKING_LARGE_VALUE; + } + max_vals.rank = worldRank; + + // Who had the maximum? + MPI::COMM_WORLD.Allreduce(&max_vals, &max_vals, + 1, MPI::REALTYPE_INT, MPI::MAXLOC); + max_val = max_vals.val; +#endif + + if (min_val < max_val) { + +#ifdef IS_MPI + if (max_vals.rank == worldRank && min_vals.rank == worldRank) { + // I have both maximum and minimum, so proceed like a single + // processor version: +#endif + + Vector3d min_vel = min_sd->getVel(); + Vector3d max_vel = max_sd->getVel(); + RealType temp_vel; + + switch(rnemdFluxType_) { + case rnemdKE : + min_sd->setVel(max_vel); + max_sd->setVel(min_vel); + if (min_sd->isDirectional() && max_sd->isDirectional()) { + Vector3d min_angMom = min_sd->getJ(); + Vector3d max_angMom = max_sd->getJ(); + min_sd->setJ(max_angMom); + max_sd->setJ(min_angMom); + }//angular momenta exchange enabled + //assumes same rigid body identity + break; + case rnemdPx : + temp_vel = min_vel.x(); + min_vel.x() = max_vel.x(); + max_vel.x() = temp_vel; + min_sd->setVel(min_vel); + max_sd->setVel(max_vel); + break; + case rnemdPy : + temp_vel = min_vel.y(); + min_vel.y() = max_vel.y(); + max_vel.y() = temp_vel; + min_sd->setVel(min_vel); + max_sd->setVel(max_vel); + break; + case rnemdPz : + temp_vel = min_vel.z(); + min_vel.z() = max_vel.z(); + max_vel.z() = temp_vel; + min_sd->setVel(min_vel); + max_sd->setVel(max_vel); + break; + default : + break; + } + +#ifdef IS_MPI + // the rest of the cases only apply in parallel simulations: + } else if (max_vals.rank == worldRank) { + // I had the max, but not the minimum + + Vector3d min_vel; + Vector3d max_vel = max_sd->getVel(); + MPI::Status status; + + // point-to-point swap of the velocity vector + MPI::COMM_WORLD.Sendrecv(max_vel.getArrayPointer(), 3, MPI::REALTYPE, + min_vals.rank, 0, + min_vel.getArrayPointer(), 3, MPI::REALTYPE, + min_vals.rank, 0, status); + + switch(rnemdFluxType_) { + case rnemdKE : + max_sd->setVel(min_vel); + //angular momenta exchange enabled + if (max_sd->isDirectional()) { + Vector3d min_angMom; + Vector3d max_angMom = max_sd->getJ(); + + // point-to-point swap of the angular momentum vector + MPI::COMM_WORLD.Sendrecv(max_angMom.getArrayPointer(), 3, + MPI::REALTYPE, min_vals.rank, 1, + min_angMom.getArrayPointer(), 3, + MPI::REALTYPE, min_vals.rank, 1, + status); + + max_sd->setJ(min_angMom); + } + break; + case rnemdPx : + max_vel.x() = min_vel.x(); + max_sd->setVel(max_vel); + break; + case rnemdPy : + max_vel.y() = min_vel.y(); + max_sd->setVel(max_vel); + break; + case rnemdPz : + max_vel.z() = min_vel.z(); + max_sd->setVel(max_vel); + break; + default : + break; + } + } else if (min_vals.rank == worldRank) { + // I had the minimum but not the maximum: + + Vector3d max_vel; + Vector3d min_vel = min_sd->getVel(); + MPI::Status status; + + // point-to-point swap of the velocity vector + MPI::COMM_WORLD.Sendrecv(min_vel.getArrayPointer(), 3, MPI::REALTYPE, + max_vals.rank, 0, + max_vel.getArrayPointer(), 3, MPI::REALTYPE, + max_vals.rank, 0, status); + + switch(rnemdFluxType_) { + case rnemdKE : + min_sd->setVel(max_vel); + //angular momenta exchange enabled + if (min_sd->isDirectional()) { + Vector3d min_angMom = min_sd->getJ(); + Vector3d max_angMom; + + // point-to-point swap of the angular momentum vector + MPI::COMM_WORLD.Sendrecv(min_angMom.getArrayPointer(), 3, + MPI::REALTYPE, max_vals.rank, 1, + max_angMom.getArrayPointer(), 3, + MPI::REALTYPE, max_vals.rank, 1, + status); + + min_sd->setJ(max_angMom); + } + break; + case rnemdPx : + min_vel.x() = max_vel.x(); + min_sd->setVel(min_vel); + break; + case rnemdPy : + min_vel.y() = max_vel.y(); + min_sd->setVel(min_vel); + break; + case rnemdPz : + min_vel.z() = max_vel.z(); + min_sd->setVel(min_vel); + break; + default : + break; + } + } +#endif + + switch(rnemdFluxType_) { + case rnemdKE: + cerr << "KE\n"; + kineticExchange_ += max_val - min_val; + break; + case rnemdPx: + momentumExchange_.x() += max_val - min_val; + break; + case rnemdPy: + momentumExchange_.y() += max_val - min_val; + break; + case rnemdPz: + momentumExchange_.z() += max_val - min_val; + break; + default: + cerr << "default\n"; + break; + } + } else { + sprintf(painCave.errMsg, + "RNEMD::doSwap exchange NOT performed because min_val > max_val\n"); + painCave.isFatal = 0; + painCave.severity = OPENMD_INFO; + simError(); + failTrialCount_++; + } + } else { + sprintf(painCave.errMsg, + "RNEMD::doSwap exchange NOT performed because selected object\n" + "\twas not present in at least one of the two slabs.\n"); + painCave.isFatal = 0; + painCave.severity = OPENMD_INFO; + simError(); + failTrialCount_++; + } + } + + void RNEMD::doNIVS() { + + Snapshot* currentSnap_ = info_->getSnapshotManager()->getCurrentSnapshot(); + Mat3x3d hmat = currentSnap_->getHmat(); + + seleMan_.setSelectionSet(evaluator_.evaluate()); + + int selei; + StuntDouble* sd; + int idx; + + vector hotBin, coldBin; + + RealType Phx = 0.0; + RealType Phy = 0.0; + RealType Phz = 0.0; + RealType Khx = 0.0; + RealType Khy = 0.0; + RealType Khz = 0.0; + RealType Khw = 0.0; + RealType Pcx = 0.0; + RealType Pcy = 0.0; + RealType Pcz = 0.0; + RealType Kcx = 0.0; + RealType Kcy = 0.0; + RealType Kcz = 0.0; + RealType Kcw = 0.0; + + for (sd = seleMan_.beginSelected(selei); sd != NULL; + sd = seleMan_.nextSelected(selei)) { + + idx = sd->getLocalIndex(); + + Vector3d pos = sd->getPos(); + + // wrap the stuntdouble's position back into the box: + + if (usePeriodicBoundaryConditions_) + currentSnap_->wrapVector(pos); + + // which bin is this stuntdouble in? + bool inA = inSlabA(pos); + bool inB = inSlabB(pos); + + if (inA || inB) { + + RealType mass = sd->getMass(); + Vector3d vel = sd->getVel(); + + if (inA) { + hotBin.push_back(sd); + Phx += mass * vel.x(); + Phy += mass * vel.y(); + Phz += mass * vel.z(); + Khx += mass * vel.x() * vel.x(); + Khy += mass * vel.y() * vel.y(); + Khz += mass * vel.z() * vel.z(); + if (sd->isDirectional()) { + Vector3d angMom = sd->getJ(); + Mat3x3d I = sd->getI(); + if (sd->isLinear()) { + int i = sd->linearAxis(); + int j = (i + 1) % 3; + int k = (i + 2) % 3; + Khw += angMom[j] * angMom[j] / I(j, j) + + angMom[k] * angMom[k] / I(k, k); + } else { + Khw += angMom[0]*angMom[0]/I(0, 0) + + angMom[1]*angMom[1]/I(1, 1) + + angMom[2]*angMom[2]/I(2, 2); + } + } + } else { + coldBin.push_back(sd); + Pcx += mass * vel.x(); + Pcy += mass * vel.y(); + Pcz += mass * vel.z(); + Kcx += mass * vel.x() * vel.x(); + Kcy += mass * vel.y() * vel.y(); + Kcz += mass * vel.z() * vel.z(); + if (sd->isDirectional()) { + Vector3d angMom = sd->getJ(); + Mat3x3d I = sd->getI(); + if (sd->isLinear()) { + int i = sd->linearAxis(); + int j = (i + 1) % 3; + int k = (i + 2) % 3; + Kcw += angMom[j] * angMom[j] / I(j, j) + + angMom[k] * angMom[k] / I(k, k); + } else { + Kcw += angMom[0]*angMom[0]/I(0, 0) + + angMom[1]*angMom[1]/I(1, 1) + + angMom[2]*angMom[2]/I(2, 2); + } + } + } + } + } + + Khx *= 0.5; + Khy *= 0.5; + Khz *= 0.5; + Khw *= 0.5; + Kcx *= 0.5; + Kcy *= 0.5; + Kcz *= 0.5; + Kcw *= 0.5; + +#ifdef IS_MPI + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Phx, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Phy, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Phz, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Pcx, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Pcy, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Pcz, 1, MPI::REALTYPE, MPI::SUM); + + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Khx, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Khy, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Khz, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Khw, 1, MPI::REALTYPE, MPI::SUM); + + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Kcx, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Kcy, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Kcz, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Kcw, 1, MPI::REALTYPE, MPI::SUM); +#endif + + //solve coldBin coeff's first + RealType px = Pcx / Phx; + RealType py = Pcy / Phy; + RealType pz = Pcz / Phz; + RealType c, x, y, z; + bool successfulScale = false; + if ((rnemdFluxType_ == rnemdFullKE) || + (rnemdFluxType_ == rnemdRotKE)) { + //may need sanity check Khw & Kcw > 0 + + if (rnemdFluxType_ == rnemdFullKE) { + c = 1.0 - kineticTarget_ / (Kcx + Kcy + Kcz + Kcw); + } else { + c = 1.0 - kineticTarget_ / Kcw; + } + + if ((c > 0.81) && (c < 1.21)) {//restrict scaling coefficients + c = sqrt(c); + //std::cerr << "cold slab scaling coefficient: " << c << endl; + //now convert to hotBin coefficient + RealType w = 0.0; + if (rnemdFluxType_ == rnemdFullKE) { + x = 1.0 + px * (1.0 - c); + y = 1.0 + py * (1.0 - c); + z = 1.0 + pz * (1.0 - c); + /* more complicated way + w = 1.0 + (Kcw - Kcw * c * c - (c * c * (Kcx + Kcy + Kcz + + Khx * px * px + Khy * py * py + Khz * pz * pz) + - 2.0 * c * (Khx * px * (1.0 + px) + Khy * py * (1.0 + py) + + Khz * pz * (1.0 + pz)) + Khx * px * (2.0 + px) + + Khy * py * (2.0 + py) + Khz * pz * (2.0 + pz) + - Kcx - Kcy - Kcz)) / Khw; the following is simpler + */ + if ((fabs(x - 1.0) < 0.1) && (fabs(y - 1.0) < 0.1) && + (fabs(z - 1.0) < 0.1)) { + w = 1.0 + (kineticTarget_ + + Khx * (1.0 - x * x) + Khy * (1.0 - y * y) + + Khz * (1.0 - z * z)) / Khw; + }//no need to calculate w if x, y or z is out of range + } else { + w = 1.0 + kineticTarget_ / Khw; + } + if ((w > 0.81) && (w < 1.21)) {//restrict scaling coefficients + //if w is in the right range, so should be x, y, z. + vector::iterator sdi; + Vector3d vel; + for (sdi = coldBin.begin(); sdi != coldBin.end(); sdi++) { + if (rnemdFluxType_ == rnemdFullKE) { + vel = (*sdi)->getVel() * c; + (*sdi)->setVel(vel); + } + if ((*sdi)->isDirectional()) { + Vector3d angMom = (*sdi)->getJ() * c; + (*sdi)->setJ(angMom); + } + } + w = sqrt(w); + // std::cerr << "xh= " << x << "\tyh= " << y << "\tzh= " << z + // << "\twh= " << w << endl; + for (sdi = hotBin.begin(); sdi != hotBin.end(); sdi++) { + if (rnemdFluxType_ == rnemdFullKE) { + vel = (*sdi)->getVel(); + vel.x() *= x; + vel.y() *= y; + vel.z() *= z; + (*sdi)->setVel(vel); + } + if ((*sdi)->isDirectional()) { + Vector3d angMom = (*sdi)->getJ() * w; + (*sdi)->setJ(angMom); + } + } + successfulScale = true; + kineticExchange_ += kineticTarget_; + } + } + } else { + RealType a000, a110, c0, a001, a111, b01, b11, c1; + switch(rnemdFluxType_) { + case rnemdKE : + /* used hotBin coeff's & only scale x & y dimensions + RealType px = Phx / Pcx; + RealType py = Phy / Pcy; + a110 = Khy; + c0 = - Khx - Khy - kineticTarget_; + a000 = Khx; + a111 = Kcy * py * py; + b11 = -2.0 * Kcy * py * (1.0 + py); + c1 = Kcy * py * (2.0 + py) + Kcx * px * ( 2.0 + px) + kineticTarget_; + b01 = -2.0 * Kcx * px * (1.0 + px); + a001 = Kcx * px * px; + */ + //scale all three dimensions, let c_x = c_y + a000 = Kcx + Kcy; + a110 = Kcz; + c0 = kineticTarget_ - Kcx - Kcy - Kcz; + a001 = Khx * px * px + Khy * py * py; + a111 = Khz * pz * pz; + b01 = -2.0 * (Khx * px * (1.0 + px) + Khy * py * (1.0 + py)); + b11 = -2.0 * Khz * pz * (1.0 + pz); + c1 = Khx * px * (2.0 + px) + Khy * py * (2.0 + py) + + Khz * pz * (2.0 + pz) - kineticTarget_; + break; + case rnemdPx : + c = 1 - momentumTarget_.x() / Pcx; + a000 = Kcy; + a110 = Kcz; + c0 = Kcx * c * c - Kcx - Kcy - Kcz; + a001 = py * py * Khy; + a111 = pz * pz * Khz; + b01 = -2.0 * Khy * py * (1.0 + py); + b11 = -2.0 * Khz * pz * (1.0 + pz); + c1 = Khy * py * (2.0 + py) + Khz * pz * (2.0 + pz) + + Khx * (fastpow(c * px - px - 1.0, 2) - 1.0); + break; + case rnemdPy : + c = 1 - momentumTarget_.y() / Pcy; + a000 = Kcx; + a110 = Kcz; + c0 = Kcy * c * c - Kcx - Kcy - Kcz; + a001 = px * px * Khx; + a111 = pz * pz * Khz; + b01 = -2.0 * Khx * px * (1.0 + px); + b11 = -2.0 * Khz * pz * (1.0 + pz); + c1 = Khx * px * (2.0 + px) + Khz * pz * (2.0 + pz) + + Khy * (fastpow(c * py - py - 1.0, 2) - 1.0); + break; + case rnemdPz ://we don't really do this, do we? + c = 1 - momentumTarget_.z() / Pcz; + a000 = Kcx; + a110 = Kcy; + c0 = Kcz * c * c - Kcx - Kcy - Kcz; + a001 = px * px * Khx; + a111 = py * py * Khy; + b01 = -2.0 * Khx * px * (1.0 + px); + b11 = -2.0 * Khy * py * (1.0 + py); + c1 = Khx * px * (2.0 + px) + Khy * py * (2.0 + py) + + Khz * (fastpow(c * pz - pz - 1.0, 2) - 1.0); + break; + default : + break; + } + + RealType v1 = a000 * a111 - a001 * a110; + RealType v2 = a000 * b01; + RealType v3 = a000 * b11; + RealType v4 = a000 * c1 - a001 * c0; + RealType v8 = a110 * b01; + RealType v10 = - b01 * c0; + + RealType u0 = v2 * v10 - v4 * v4; + RealType u1 = -2.0 * v3 * v4; + RealType u2 = -v2 * v8 - v3 * v3 - 2.0 * v1 * v4; + RealType u3 = -2.0 * v1 * v3; + RealType u4 = - v1 * v1; + //rescale coefficients + RealType maxAbs = fabs(u0); + if (maxAbs < fabs(u1)) maxAbs = fabs(u1); + if (maxAbs < fabs(u2)) maxAbs = fabs(u2); + if (maxAbs < fabs(u3)) maxAbs = fabs(u3); + if (maxAbs < fabs(u4)) maxAbs = fabs(u4); + u0 /= maxAbs; + u1 /= maxAbs; + u2 /= maxAbs; + u3 /= maxAbs; + u4 /= maxAbs; + //max_element(start, end) is also available. + Polynomial poly; //same as DoublePolynomial poly; + poly.setCoefficient(4, u4); + poly.setCoefficient(3, u3); + poly.setCoefficient(2, u2); + poly.setCoefficient(1, u1); + poly.setCoefficient(0, u0); + vector realRoots = poly.FindRealRoots(); + + vector::iterator ri; + RealType r1, r2, alpha0; + vector > rps; + for (ri = realRoots.begin(); ri !=realRoots.end(); ri++) { + r2 = *ri; + //check if FindRealRoots() give the right answer + if ( fabs(u0 + r2 * (u1 + r2 * (u2 + r2 * (u3 + r2 * u4)))) > 1e-6 ) { + sprintf(painCave.errMsg, + "RNEMD Warning: polynomial solve seems to have an error!"); + painCave.isFatal = 0; + simError(); + failRootCount_++; + } + //might not be useful w/o rescaling coefficients + alpha0 = -c0 - a110 * r2 * r2; + if (alpha0 >= 0.0) { + r1 = sqrt(alpha0 / a000); + if (fabs(c1 + r1 * (b01 + r1 * a001) + r2 * (b11 + r2 * a111)) + < 1e-6) + { rps.push_back(make_pair(r1, r2)); } + if (r1 > 1e-6) { //r1 non-negative + r1 = -r1; + if (fabs(c1 + r1 * (b01 + r1 * a001) + r2 * (b11 + r2 * a111)) + < 1e-6) + { rps.push_back(make_pair(r1, r2)); } + } + } + } + // Consider combining together the solving pair part w/ the searching + // best solution part so that we don't need the pairs vector + if (!rps.empty()) { + RealType smallestDiff = HONKING_LARGE_VALUE; + RealType diff; + pair bestPair = make_pair(1.0, 1.0); + vector >::iterator rpi; + for (rpi = rps.begin(); rpi != rps.end(); rpi++) { + r1 = (*rpi).first; + r2 = (*rpi).second; + switch(rnemdFluxType_) { + case rnemdKE : + diff = fastpow(1.0 - r1, 2) + fastpow(1.0 - r2, 2) + + fastpow(r1 * r1 / r2 / r2 - Kcz/Kcx, 2) + + fastpow(r1 * r1 / r2 / r2 - Kcz/Kcy, 2); + break; + case rnemdPx : + diff = fastpow(1.0 - r1, 2) + fastpow(1.0 - r2, 2) + + fastpow(r1 * r1 / r2 / r2 - Kcz/Kcy, 2); + break; + case rnemdPy : + diff = fastpow(1.0 - r1, 2) + fastpow(1.0 - r2, 2) + + fastpow(r1 * r1 / r2 / r2 - Kcz/Kcx, 2); + break; + case rnemdPz : + diff = fastpow(1.0 - r1, 2) + fastpow(1.0 - r2, 2) + + fastpow(r1 * r1 / r2 / r2 - Kcy/Kcx, 2); + default : + break; + } + if (diff < smallestDiff) { + smallestDiff = diff; + bestPair = *rpi; + } + } +#ifdef IS_MPI + if (worldRank == 0) { +#endif + // sprintf(painCave.errMsg, + // "RNEMD: roots r1= %lf\tr2 = %lf\n", + // bestPair.first, bestPair.second); + // painCave.isFatal = 0; + // painCave.severity = OPENMD_INFO; + // simError(); +#ifdef IS_MPI + } +#endif + + switch(rnemdFluxType_) { + case rnemdKE : + x = bestPair.first; + y = bestPair.first; + z = bestPair.second; + break; + case rnemdPx : + x = c; + y = bestPair.first; + z = bestPair.second; + break; + case rnemdPy : + x = bestPair.first; + y = c; + z = bestPair.second; + break; + case rnemdPz : + x = bestPair.first; + y = bestPair.second; + z = c; + break; + default : + break; + } + vector::iterator sdi; + Vector3d vel; + for (sdi = coldBin.begin(); sdi != coldBin.end(); sdi++) { + vel = (*sdi)->getVel(); + vel.x() *= x; + vel.y() *= y; + vel.z() *= z; + (*sdi)->setVel(vel); + } + //convert to hotBin coefficient + x = 1.0 + px * (1.0 - x); + y = 1.0 + py * (1.0 - y); + z = 1.0 + pz * (1.0 - z); + for (sdi = hotBin.begin(); sdi != hotBin.end(); sdi++) { + vel = (*sdi)->getVel(); + vel.x() *= x; + vel.y() *= y; + vel.z() *= z; + (*sdi)->setVel(vel); + } + successfulScale = true; + switch(rnemdFluxType_) { + case rnemdKE : + kineticExchange_ += kineticTarget_; + break; + case rnemdPx : + case rnemdPy : + case rnemdPz : + momentumExchange_ += momentumTarget_; + break; + default : + break; + } + } + } + if (successfulScale != true) { + sprintf(painCave.errMsg, + "RNEMD::doNIVS exchange NOT performed - roots that solve\n" + "\tthe constraint equations may not exist or there may be\n" + "\tno selected objects in one or both slabs.\n"); + painCave.isFatal = 0; + painCave.severity = OPENMD_INFO; + simError(); + failTrialCount_++; + } + } + + void RNEMD::doVSS() { + + Snapshot* currentSnap_ = info_->getSnapshotManager()->getCurrentSnapshot(); + RealType time = currentSnap_->getTime(); + Mat3x3d hmat = currentSnap_->getHmat(); + + seleMan_.setSelectionSet(evaluator_.evaluate()); + + int selei; + StuntDouble* sd; + int idx; + + vector hotBin, coldBin; + + Vector3d Ph(V3Zero); + RealType Mh = 0.0; + RealType Kh = 0.0; + Vector3d Pc(V3Zero); + RealType Mc = 0.0; + RealType Kc = 0.0; + + + for (sd = seleMan_.beginSelected(selei); sd != NULL; + sd = seleMan_.nextSelected(selei)) { + + idx = sd->getLocalIndex(); + + Vector3d pos = sd->getPos(); + + // wrap the stuntdouble's position back into the box: + + if (usePeriodicBoundaryConditions_) + currentSnap_->wrapVector(pos); + + // which bin is this stuntdouble in? + bool inA = inSlabA(pos); + bool inB = inSlabB(pos); + + if (inA || inB) { + + RealType mass = sd->getMass(); + Vector3d vel = sd->getVel(); + + if (inA) { + hotBin.push_back(sd); + //std::cerr << "before, velocity = " << vel << endl; + Ph += mass * vel; + //std::cerr << "after, velocity = " << vel << endl; + Mh += mass; + Kh += mass * vel.lengthSquare(); + if (rnemdFluxType_ == rnemdFullKE) { + if (sd->isDirectional()) { + Vector3d angMom = sd->getJ(); + Mat3x3d I = sd->getI(); + if (sd->isLinear()) { + int i = sd->linearAxis(); + int j = (i + 1) % 3; + int k = (i + 2) % 3; + Kh += angMom[j] * angMom[j] / I(j, j) + + angMom[k] * angMom[k] / I(k, k); + } else { + Kh += angMom[0] * angMom[0] / I(0, 0) + + angMom[1] * angMom[1] / I(1, 1) + + angMom[2] * angMom[2] / I(2, 2); + } + } + } + } else { //midBin_ + coldBin.push_back(sd); + Pc += mass * vel; + Mc += mass; + Kc += mass * vel.lengthSquare(); + if (rnemdFluxType_ == rnemdFullKE) { + if (sd->isDirectional()) { + Vector3d angMom = sd->getJ(); + Mat3x3d I = sd->getI(); + if (sd->isLinear()) { + int i = sd->linearAxis(); + int j = (i + 1) % 3; + int k = (i + 2) % 3; + Kc += angMom[j] * angMom[j] / I(j, j) + + angMom[k] * angMom[k] / I(k, k); + } else { + Kc += angMom[0] * angMom[0] / I(0, 0) + + angMom[1] * angMom[1] / I(1, 1) + + angMom[2] * angMom[2] / I(2, 2); + } + } + } + } + } + } + + Kh *= 0.5; + Kc *= 0.5; + + // std::cerr << "Mh= " << Mh << "\tKh= " << Kh << "\tMc= " << Mc + // << "\tKc= " << Kc << endl; + // std::cerr << "Ph= " << Ph << "\tPc= " << Pc << endl; + +#ifdef IS_MPI + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Ph[0], 3, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Pc[0], 3, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Mh, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Kh, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Mc, 1, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &Kc, 1, MPI::REALTYPE, MPI::SUM); +#endif + + bool successfulExchange = false; + if ((Mh > 0.0) && (Mc > 0.0)) {//both slabs are not empty + Vector3d vc = Pc / Mc; + Vector3d ac = -momentumTarget_ / Mc + vc; + Vector3d acrec = -momentumTarget_ / Mc; + RealType cNumerator = Kc - kineticTarget_ - 0.5 * Mc * ac.lengthSquare(); + if (cNumerator > 0.0) { + RealType cDenominator = Kc - 0.5 * Mc * vc.lengthSquare(); + if (cDenominator > 0.0) { + RealType c = sqrt(cNumerator / cDenominator); + if ((c > 0.9) && (c < 1.1)) {//restrict scaling coefficients + Vector3d vh = Ph / Mh; + Vector3d ah = momentumTarget_ / Mh + vh; + Vector3d ahrec = momentumTarget_ / Mh; + RealType hNumerator = Kh + kineticTarget_ + - 0.5 * Mh * ah.lengthSquare(); + if (hNumerator > 0.0) { + RealType hDenominator = Kh - 0.5 * Mh * vh.lengthSquare(); + if (hDenominator > 0.0) { + RealType h = sqrt(hNumerator / hDenominator); + if ((h > 0.9) && (h < 1.1)) { + // std::cerr << "cold slab scaling coefficient: " << c << "\n"; + // std::cerr << "hot slab scaling coefficient: " << h << "\n"; + vector::iterator sdi; + Vector3d vel; + for (sdi = coldBin.begin(); sdi != coldBin.end(); sdi++) { + //vel = (*sdi)->getVel(); + vel = ((*sdi)->getVel() - vc) * c + ac; + (*sdi)->setVel(vel); + if (rnemdFluxType_ == rnemdFullKE) { + if ((*sdi)->isDirectional()) { + Vector3d angMom = (*sdi)->getJ() * c; + (*sdi)->setJ(angMom); + } + } + } + for (sdi = hotBin.begin(); sdi != hotBin.end(); sdi++) { + //vel = (*sdi)->getVel(); + vel = ((*sdi)->getVel() - vh) * h + ah; + (*sdi)->setVel(vel); + if (rnemdFluxType_ == rnemdFullKE) { + if ((*sdi)->isDirectional()) { + Vector3d angMom = (*sdi)->getJ() * h; + (*sdi)->setJ(angMom); + } + } + } + successfulExchange = true; + kineticExchange_ += kineticTarget_; + momentumExchange_ += momentumTarget_; + } + } + } + } + } + } + } + if (successfulExchange != true) { + sprintf(painCave.errMsg, + "RNEMD::doVSS exchange NOT performed - roots that solve\n" + "\tthe constraint equations may not exist or there may be\n" + "\tno selected objects in one or both slabs.\n"); + painCave.isFatal = 0; + painCave.severity = OPENMD_INFO; + simError(); + failTrialCount_++; + } + } + + void RNEMD::doRNEMD() { + + trialCount_++; + switch(rnemdMethod_) { + case rnemdSwap: + doSwap(); + break; + case rnemdNIVS: + doNIVS(); + break; + case rnemdVSS: + doVSS(); + break; + case rnemdUnkownMethod: + default : + break; + } + } + + void RNEMD::collectData() { + + Snapshot* currentSnap_ = info_->getSnapshotManager()->getCurrentSnapshot(); + Mat3x3d hmat = currentSnap_->getHmat(); + + seleMan_.setSelectionSet(evaluator_.evaluate()); + + int selei; + StuntDouble* sd; + int idx; + + vector binMass(nBins_, 0.0); + vector binPx(nBins_, 0.0); + vector binPy(nBins_, 0.0); + vector binPz(nBins_, 0.0); + vector binKE(nBins_, 0.0); + vector binDOF(nBins_, 0); + vector binCount(nBins_, 0); + + // alternative approach, track all molecules instead of only those + // selected for scaling/swapping: + /* + SimInfo::MoleculeIterator miter; + vector::iterator iiter; + Molecule* mol; + StuntDouble* sd; + for (mol = info_->beginMolecule(miter); mol != NULL; + mol = info_->nextMolecule(miter)) + sd is essentially sd + for (sd = mol->beginIntegrableObject(iiter); + sd != NULL; + sd = mol->nextIntegrableObject(iiter)) + */ + for (sd = seleMan_.beginSelected(selei); sd != NULL; + sd = seleMan_.nextSelected(selei)) { + + idx = sd->getLocalIndex(); + + Vector3d pos = sd->getPos(); + + // wrap the stuntdouble's position back into the box: + + if (usePeriodicBoundaryConditions_) + currentSnap_->wrapVector(pos); + + // which bin is this stuntdouble in? + // wrapped positions are in the range [-0.5*hmat(2,2), +0.5*hmat(2,2)] + // Shift molecules by half a box to have bins start at 0 + // The modulo operator is used to wrap the case when we are + // beyond the end of the bins back to the beginning. + int binNo = int(nBins_ * (pos.z() / hmat(2,2) + 0.5)) % nBins_; + + RealType mass = sd->getMass(); + Vector3d vel = sd->getVel(); + + binCount[binNo]++; + binMass[binNo] += mass; + binPx[binNo] += mass*vel.x(); + binPy[binNo] += mass*vel.y(); + binPz[binNo] += mass*vel.z(); + binKE[binNo] += 0.5 * (mass * vel.lengthSquare()); + binDOF[binNo] += 3; + + if (sd->isDirectional()) { + Vector3d angMom = sd->getJ(); + Mat3x3d I = sd->getI(); + if (sd->isLinear()) { + int i = sd->linearAxis(); + int j = (i + 1) % 3; + int k = (i + 2) % 3; + binKE[binNo] += 0.5 * (angMom[j] * angMom[j] / I(j, j) + + angMom[k] * angMom[k] / I(k, k)); + binDOF[binNo] += 2; + } else { + binKE[binNo] += 0.5 * (angMom[0] * angMom[0] / I(0, 0) + + angMom[1] * angMom[1] / I(1, 1) + + angMom[2] * angMom[2] / I(2, 2)); + binDOF[binNo] += 3; + } + } + } + + +#ifdef IS_MPI + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &binCount[0], + nBins_, MPI::INT, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &binMass[0], + nBins_, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &binPx[0], + nBins_, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &binPy[0], + nBins_, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &binPz[0], + nBins_, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &binKE[0], + nBins_, MPI::REALTYPE, MPI::SUM); + MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &binDOF[0], + nBins_, MPI::INT, MPI::SUM); +#endif + + Vector3d vel; + RealType den; + RealType temp; + RealType z; + for (int i = 0; i < nBins_; i++) { + z = (((RealType)i + 0.5) / (RealType)nBins_) * hmat(2,2); + vel.x() = binPx[i] / binMass[i]; + vel.y() = binPy[i] / binMass[i]; + vel.z() = binPz[i] / binMass[i]; + den = binCount[i] * nBins_ / (hmat(0,0) * hmat(1,1) * hmat(2,2)); + temp = 2.0 * binKE[i] / (binDOF[i] * PhysicalConstants::kb * + PhysicalConstants::energyConvert); + + for (unsigned int j = 0; j < outputMask_.size(); ++j) { + if(outputMask_[j]) { + switch(j) { + case Z: + (data_[j].accumulator[i])->add(z); + break; + case TEMPERATURE: + data_[j].accumulator[i]->add(temp); + break; + case VELOCITY: + dynamic_cast(data_[j].accumulator[i])->add(vel); + break; + case DENSITY: + data_[j].accumulator[i]->add(den); + break; + } + } + } + } + } + + void RNEMD::getStarted() { + collectData(); + writeOutputFile(); + } + + void RNEMD::parseOutputFileFormat(const std::string& format) { + StringTokenizer tokenizer(format, " ,;|\t\n\r"); + + while(tokenizer.hasMoreTokens()) { + std::string token(tokenizer.nextToken()); + toUpper(token); + OutputMapType::iterator i = outputMap_.find(token); + if (i != outputMap_.end()) { + outputMask_.set(i->second); + } else { + sprintf( painCave.errMsg, + "RNEMD::parseOutputFileFormat: %s is not a recognized\n" + "\toutputFileFormat keyword.\n", token.c_str() ); + painCave.isFatal = 0; + painCave.severity = OPENMD_ERROR; + simError(); + } + } + } + + void RNEMD::writeOutputFile() { + +#ifdef IS_MPI + // If we're the root node, should we print out the results + int worldRank = MPI::COMM_WORLD.Get_rank(); + if (worldRank == 0) { +#endif + rnemdFile_.open(rnemdFileName_.c_str(), std::ios::out | std::ios::trunc ); + + if( !rnemdFile_ ){ + sprintf( painCave.errMsg, + "Could not open \"%s\" for RNEMD output.\n", + rnemdFileName_.c_str()); + painCave.isFatal = 1; + simError(); + } + + Snapshot* currentSnap_ = info_->getSnapshotManager()->getCurrentSnapshot(); + + RealType time = currentSnap_->getTime(); + + + rnemdFile_ << "#######################################################\n"; + rnemdFile_ << "# RNEMD {\n"; + + map::iterator mi; + for(mi = stringToMethod_.begin(); mi != stringToMethod_.end(); ++mi) { + if ( (*mi).second == rnemdMethod_) + rnemdFile_ << "# exchangeMethod = " << (*mi).first << "\n"; + } + map::iterator fi; + for(fi = stringToFluxType_.begin(); fi != stringToFluxType_.end(); ++fi) { + if ( (*fi).second == rnemdFluxType_) + rnemdFile_ << "# fluxType = " << (*fi).first << "\n"; + } + + rnemdFile_ << "# exchangeTime = " << exchangeTime_ << " fs\n"; + + rnemdFile_ << "# objectSelection = \"" + << rnemdObjectSelection_ << "\"\n"; + rnemdFile_ << "# slabWidth = " << slabWidth_ << " angstroms\n"; + rnemdFile_ << "# slabAcenter = " << slabACenter_ << " angstroms\n"; + rnemdFile_ << "# slabBcenter = " << slabBCenter_ << " angstroms\n"; + rnemdFile_ << "# }\n"; + rnemdFile_ << "#######################################################\n"; + + rnemdFile_ << "# running time = " << time << " fs\n"; + rnemdFile_ << "# target kinetic flux = " << kineticFlux_ << "\n"; + rnemdFile_ << "# target momentum flux = " << momentumFluxVector_ << "\n"; + + rnemdFile_ << "# target one-time kinetic exchange = " << kineticTarget_ + << "\n"; + rnemdFile_ << "# target one-time momentum exchange = " << momentumTarget_ + << "\n"; + + rnemdFile_ << "# actual kinetic exchange = " << kineticExchange_ << "\n"; + rnemdFile_ << "# actual momentum exchange = " << momentumExchange_ + << "\n"; + + rnemdFile_ << "# attempted exchanges: " << trialCount_ << "\n"; + rnemdFile_ << "# failed exchanges: " << failTrialCount_ << "\n"; + + + if (rnemdMethod_ == rnemdNIVS) { + rnemdFile_ << "# NIVS root-check warnings: " << failRootCount_ << "\n"; + } + + rnemdFile_ << "#######################################################\n"; + + + + //write title + rnemdFile_ << "#"; + for (unsigned int i = 0; i < outputMask_.size(); ++i) { + if (outputMask_[i]) { + rnemdFile_ << "\t" << data_[i].title << + "(" << data_[i].units << ")"; + } + } + rnemdFile_ << std::endl; + + rnemdFile_.precision(8); + + for (unsigned int j = 0; j < nBins_; j++) { + + for (unsigned int i = 0; i < outputMask_.size(); ++i) { + if (outputMask_[i]) { + if (data_[i].dataType == "RealType") + writeReal(i,j); + else if (data_[i].dataType == "Vector3d") + writeVector(i,j); + else { + sprintf( painCave.errMsg, + "RNEMD found an unknown data type for: %s ", + data_[i].title.c_str()); + painCave.isFatal = 1; + simError(); + } + } + } + rnemdFile_ << std::endl; + + } + + rnemdFile_.flush(); + rnemdFile_.close(); + +#ifdef IS_MPI + } +#endif + + } + + void RNEMD::writeReal(int index, unsigned int bin) { + assert(index >=0 && index < ENDINDEX); + assert(bin >=0 && bin < nBins_); + RealType s; + + data_[index].accumulator[bin]->getAverage(s); + + if (! isinf(s) && ! isnan(s)) { + rnemdFile_ << "\t" << s; + } else{ + sprintf( painCave.errMsg, + "RNEMD detected a numerical error writing: %s for bin %d", + data_[index].title.c_str(), bin); + painCave.isFatal = 1; + simError(); + } + } + + void RNEMD::writeVector(int index, unsigned int bin) { + assert(index >=0 && index < ENDINDEX); + assert(bin >=0 && bin < nBins_); + Vector3d s; + dynamic_cast(data_[index].accumulator[bin])->getAverage(s); + if (isinf(s[0]) || isnan(s[0]) || + isinf(s[1]) || isnan(s[1]) || + isinf(s[2]) || isnan(s[2]) ) { + sprintf( painCave.errMsg, + "RNEMD detected a numerical error writing: %s for bin %d", + data_[index].title.c_str(), bin); + painCave.isFatal = 1; + simError(); + } else { + rnemdFile_ << "\t" << s[0] << "\t" << s[1] << "\t" << s[2]; + } + } } +