void CompositionProfile::sample(long iStep)
{
Vector blengths;
// Lengths of simulation box
blengths = system().boundary().lengths();
if (isAtInterval(iStep)) {
Vector position;
double product;
System::ConstMoleculeIterator molIter;
Molecule::ConstAtomIterator atomIter;
int nSpecies, iSpecies, typeId;
// Loop over all atoms
nSpecies = system().simulation().nSpecies();
for (iSpecies = 0; iSpecies < nSpecies; ++iSpecies) {
system().begin(iSpecies, molIter);
for ( ; molIter.notEnd(); ++molIter) {
molIter->begin(atomIter);
for ( ; atomIter.notEnd(); ++atomIter) {
position = atomIter->position();
typeId = atomIter->typeId();
for (int i = 0; i < Dimension; ++i) {
position[i] /= blengths[i];
}
// Loop over direction vectors
for (int i = 0; i < nDirection_; ++i) {
product = position.dot(waveVectors_[i]);
product /= waveVectors_[i].abs();
accumulators_[i+typeId*nDirection_].sample(product);
}
}
}
}
++nSample_;
}
}
void CompositionProfile::sample(long iStep)
{
Vector blengths;
// Lengths of simulation box
blengths = system().boundary().lengths();
if (isAtInterval(iStep)) {
Vector position;
double product;
System::ConstMoleculeIterator molIter;
Molecule::ConstAtomIterator atomIter;
int nSpecies, iSpecies, typeId;
// Clear accumulators for the current timestep
for (int i = 0; i < nDirection_; ++i) {
for (int j = 0; j < nAtomType_; ++j){
currentAccumulators_[i+j*nDirection_].clear();
}
}
// Select open mode for output files
std::ios_base::openmode mode = std::ios_base::out;
if (!isFirstStep_) {
mode = std::ios_base::out | std::ios_base::app;
}
// Open log files
for (int i = 0; i < nDirection_; ++i) {
for (int j = 0; j < nAtomType_; ++j){
std::ostringstream oss;
oss << outputFileName();
for (int k = 0; k < Dimension; ++k) {
oss << "_" << intVectors_[i][k];
}
oss << "_type" << j << ".log";
fileMaster().openOutputFile(oss.str(),
logFiles_[i+j*nDirection_],
mode);
}
}
// Loop over all atoms
nSpecies = system().simulation().nSpecies();
for (iSpecies = 0; iSpecies < nSpecies; ++iSpecies) {
system().begin(iSpecies, molIter);
for ( ; molIter.notEnd(); ++molIter) {
molIter->begin(atomIter);
for ( ; atomIter.notEnd(); ++atomIter) {
position = atomIter->position();
typeId = atomIter->typeId();
for (int i = 0; i < Dimension; ++i) {
position[i] /= blengths[i];
}
// Loop over direction vectors
for (int i = 0; i < nDirection_; ++i) {
product = position.dot(waveVectors_[i]);
product /= waveVectors_[i].abs();
accumulators_[i+typeId*nDirection_].sample(product);
currentAccumulators_[i+typeId*nDirection_].sample(product);
}
}
}
}
++nSample_;
// Output to log files
for (int i = 0; i < nDirection_; ++i) {
for (int j = 0; j < nAtomType_; ++j){
currentAccumulators_[i+j*nDirection_].output(logFiles_[i+j*nDirection_]);
logFiles_[i+j*nDirection_] << std::endl;
}
}
// Close log files
for (int i = 0; i < nDirection_; ++i) {
for (int j = 0; j < nAtomType_; ++j){
logFiles_[i+j*nDirection_].close();
}
}
isFirstStep_ = false;
}
}
/*
* Increment Structure Factor
*/
void IntraStructureFactor::sample(long iStep)
{
if (isAtInterval(iStep)) {
Vector position;
std::complex<double> rho[2];
std::complex<double> expFactor;
double volume = system().boundary().volume();
double product, dS;
System::ConstMoleculeIterator molIter;
Molecule::ConstAtomIterator atomIter;
int typeId, i, j, k;
makeWaveVectors();
// Set all Deltas to zero
for (i = 0; i < nWave_; ++i) {
for (int pairId = 0; pairId < nAtomTypeIdPair_; ++pairId) {
structureFactorDelta_(i, pairId) = 0;
}
}
// Loop over molecules in species
system().begin(speciesId_, molIter);
for ( ; molIter.notEnd(); ++molIter) {
// Set all Fourier modes to zero
for (i = 0; i < nWave_; ++i) {
for (typeId = 0; typeId <= nAtomType_; ++typeId) {
fourierModes_(i, typeId) = 0;
}
}
// Loop over all atoms in one molecule
molIter->begin(atomIter);
for ( ; atomIter.notEnd(); ++atomIter) {
position = atomIter->position();
typeId = atomIter->typeId();
// Loop over wavevectors
for (i = 0; i < nWave_; ++i) {
product = position.dot(waveVectors_[i]);
expFactor = exp( product*Constants::Im );
fourierModes_(i, typeId) += expFactor;
fourierModes_(i, nAtomType_) += expFactor;
}
}
// Increment structure factors
for (i = 0; i < nWave_; ++i) {
for (j = 0; j < nAtomTypeIdPair_; ++j) {
for (k = 0; k < 2; ++k) {
typeId = atomTypeIdPairs_[j][k];
if (typeId >= 0) {
rho[k] = fourierModes_(i, typeId);
} else {
rho[k] = fourierModes_(i, nAtomType_);
}
}
rho[0] = std::conj(rho[0]);
dS = std::real(rho[0]*rho[1])/volume;
structureFactors_(i, j) += dS;
structureFactorDelta_(i,j) += dS;
}
}
}
++nSample_;
}
}
/*
* Increment structure factors for all wavevectors and modes.
*/
void StructureFactor::sample(long iStep)
{
if (isAtInterval(iStep)) {
fileMaster().openOutputFile(outputFileName("_max.dat"), outputFile_, !isFirstStep_);
isFirstStep_ = false;
Vector position;
std::complex<double> expFactor;
double product;
System::ConstMoleculeIterator molIter;
Molecule::ConstAtomIterator atomIter;
int nSpecies, iSpecies, typeId, i, j;
makeWaveVectors();
// Set all Fourier modes to zero
for (i = 0; i < nWave_; ++i) {
for (j = 0; j < nMode_; ++j) {
fourierModes_(i, j) = std::complex<double>(0.0, 0.0);
}
}
// Loop over all atoms
nSpecies = system().simulation().nSpecies();
for (iSpecies = 0; iSpecies < nSpecies; ++iSpecies) {
system().begin(iSpecies, molIter);
for ( ; molIter.notEnd(); ++molIter) {
molIter->begin(atomIter);
for ( ; atomIter.notEnd(); ++atomIter) {
position = atomIter->position();
typeId = atomIter->typeId();
// Loop over wavevectors
for (i = 0; i < nWave_; ++i) {
product = position.dot(waveVectors_[i]);
expFactor = exp( product*Constants::Im );
for (j = 0; j < nMode_; ++j) {
fourierModes_(i, j) += modes_(j, typeId)*expFactor;
}
}
}
}
}
// Increment structure factors
double volume = system().boundary().volume();
double norm;
for (j = 0; j < nMode_; ++j) {
double maxValue = 0.0;
IntVector maxIntVector;
double maxQ;
for (i = 0; i < nWave_; ++i) {
norm = std::norm(fourierModes_(i, j));
if (double(norm/volume) >= maxValue) {
maxValue = double(norm/volume);
maxIntVector = waveIntVectors_[i];
maxQ = waveVectors_[i].abs();
}
structureFactors_(i, j) += norm/volume;
}
// Output current maximum S(q)
outputFile_ << maxIntVector;
outputFile_ << Dbl(maxQ,20,8);
outputFile_ << Dbl(maxValue,20,8);
outputFile_ << std::endl;
}
++nSample_;
outputFile_ << std::endl;
outputFile_.close();
}
}
/// Increment Structure Factor
void GPUStructureFactorGrid::sample(long iStep)
{
if (isAtInterval(iStep)) {
Vector position;
System::ConstMoleculeIterator molIter;
Molecule::ConstAtomIterator atomIter;
int nSpecies, iSpecies, typeId, i, j;
makeWaveVectors();
// allocate temporary arrays
int nType = system().simulation().nAtomType();
float3 *h_wave_vectors = new float3[nWave_];
float3 *h_pos = new float3[system().simulation().atomCapacity()];
int *h_type = new int[system().simulation().atomCapacity()];
float *h_mode = new float[nMode_*nType];
float *h_sq = new float[nMode_*nWave_];
// Load wave vectors
for (int i = 0; i < nWave_; i++)
h_wave_vectors[i] = make_float3((float) waveVectors_[i][0],
(float) waveVectors_[i][1],
(float) waveVectors_[i][2]);
// Load atoms into temporary storage
nSpecies = system().simulation().nSpecies();
int nAtom = 0;
for (iSpecies = 0; iSpecies < nSpecies; ++iSpecies) {
system().begin(iSpecies, molIter);
for ( ; molIter.notEnd(); ++molIter) {
molIter->begin(atomIter);
for ( ; atomIter.notEnd(); ++atomIter) {
position = atomIter->position();
typeId = atomIter->typeId();
h_pos[nAtom] = make_float3(position[0],position[1],position[2]);
h_type[nAtom] = typeId;
nAtom++;
}
}
}
// Load modes
for (i = 0; i < nMode_; ++i) {
for (j = 0; j < nType; ++j) {
h_mode[nType*i + j] = modes_(i, j);
}
}
// Calculate structure factors
int res = gpu_sample_structure_factor(nWave_,
h_wave_vectors,
nAtom,
h_pos,
h_type,
nType,
nMode_,
h_mode,
h_sq,
system().boundary().volume()
);
if (res)
UTIL_THROW("Error updating structure factor.");
// increment structure factors
for (j = 0; j < nMode_; ++j) {
double maxValue = 0.0;
IntVector maxIntVector;
double maxQ;
for (i = 0; i < nWave_; ++i) {
if ((double) h_sq[j*nWave_+i] >= maxValue) {
maxValue = (double) h_sq[j*nWave_+i];
maxIntVector = waveIntVectors_[i];
maxQ = waveVectors_[i].abs();
}
structureFactors_(i, j) += (double) h_sq[j*nWave_ + i];
}
//maximumValue_[j].insert(maximumValue_[j].end(), 1, maxValue);
//maximumWaveIntVector_[j].insert(maximumWaveIntVector_[j].end(), 1, maxIntVector);
//maximumQ_[j].insert(maximumQ_[j].end(), 1, maxQ);
}
delete [] h_wave_vectors;
delete [] h_pos;
delete [] h_mode;
delete [] h_type;
delete [] h_sq;
++nSample_;
}
}