OpenMC/include/openmc/volume_calc.h

129 lines
4.2 KiB
C++

#ifndef OPENMC_VOLUME_CALC_H
#define OPENMC_VOLUME_CALC_H
#include <algorithm> // for find
#include <cstdint>
#include <string>
#include <vector>
#include "openmc/array.h"
#include "openmc/openmp_interface.h"
#include "openmc/position.h"
#include "openmc/tallies/trigger.h"
#include "openmc/vector.h"
#include "openmc/tensor.h"
#include "pugixml.hpp"
#ifdef _OPENMP
#include <omp.h>
#endif
namespace openmc {
//==============================================================================
// Volume calculation class
//==============================================================================
class VolumeCalculation {
public:
// Aliases, types
struct Result {
array<double, 2> volume; //!< Mean/standard deviation of volume
vector<int> nuclides; //!< Index of nuclides
vector<double> atoms; //!< Number of atoms for each nuclide
vector<double> uncertainty; //!< Uncertainty on number of atoms
int iterations; //!< Number of iterations needed to obtain the results
}; // Results for a single domain
// Constructors
VolumeCalculation(pugi::xml_node node);
VolumeCalculation() = default;
// Methods
//! \brief Stochastically determine the volume of a set of domains along with
//! the
//! average number densities of nuclides within the domain
//
//! \return Vector of results for each user-specified domain
vector<Result> execute() const;
//! \brief Write volume calculation results to HDF5 file
//
//! \param[in] filename Path to HDF5 file to write
//! \param[in] results Vector of results for each domain
void to_hdf5(
const std::string& filename, const vector<Result>& results) const;
// Tally filter and map types
enum class TallyDomain { UNIVERSE, MATERIAL, CELL };
// Data members
TallyDomain domain_type_; //!< Type of domain (cell, material, etc.)
size_t n_samples_; //!< Number of samples to use
double threshold_ {-1.0}; //!< Error threshold for domain volumes
TriggerMetric trigger_type_ {
TriggerMetric::not_active}; //!< Trigger metric for the volume calculation
Position lower_left_; //!< Lower-left position of bounding box
Position upper_right_; //!< Upper-right position of bounding box
vector<int> domain_ids_; //!< IDs of domains to find volumes of
private:
//! \brief Check whether a material has already been hit for a given domain.
//! If not, add new entries to the vectors
//
//! \param[in] i_material Index in global materials vector
//! \param[in,out] indices Vector of material indices
//! \param[in,out] hits Number of hits corresponding to each material
void check_hit(
int i_material, vector<uint64_t>& indices, vector<uint64_t>& hits) const;
};
//==============================================================================
// Global variables
//==============================================================================
namespace model {
extern vector<VolumeCalculation> volume_calcs;
}
//==============================================================================
// Non-member functions
//==============================================================================
//! Reduce vector of indices and hits from each thread to a single copy
//
//! \param[in] local_indices Indices specific to each thread
//! \param[in] local_hits Hit count specific to each thread
//! \param[out] indices Reduced vector of indices
//! \param[out] hits Reduced vector of hits
template<typename T, typename T2>
void reduce_indices_hits(const vector<T>& local_indices,
const vector<T2>& local_hits, vector<T>& indices, vector<T2>& hits)
{
const int n_threads = num_threads();
#pragma omp for ordered schedule(static, 1)
for (int i = 0; i < n_threads; ++i) {
#pragma omp ordered
for (int j = 0; j < local_indices.size(); ++j) {
// Check if this material has been added to the master list and if
// so, accumulate the number of hits
auto it = std::find(indices.begin(), indices.end(), local_indices[j]);
if (it == indices.end()) {
indices.push_back(local_indices[j]);
hits.push_back(local_hits[j]);
} else {
hits[it - indices.begin()] += local_hits[j];
}
}
}
}
void free_memory_volume();
} // namespace openmc
#endif // OPENMC_VOLUME_CALC_H