This a subclass of the Solver class for multi-core CPUs using OpenMP multi-threading. More...

#include "src/CPUSolver.h"

Public Member Functions
	CPUSolver (TrackGenerator *track_generator=NULL)
	Constructor initializes array pointers for Tracks and Materials. More...

virtual	~CPUSolver ()
	Destructor deletes array for OpenMP mutual exclusion locks for FSR scalar flux updates, and calls Solver parent class destructor to deletes arrays for fluxes and sources.

int	getNumThreads ()
	Returns the number of shared memory OpenMP threads in use. More...

void	setNumThreads (int num_threads)
	Sets the number of shared memory OpenMP threads to use (>0). More...

void	setFluxes (FP_PRECISION *in_fluxes, int num_fluxes)
	Set the flux array for use in transport sweep source calculations. More...

void	setFixedSourceByFSR (long fsr_id, int group, FP_PRECISION source)
	Assign a fixed source for a flat source region and energy group. More...

void	computeFSRFissionRates (double *fission_rates, long num_FSRs, bool nu=false)
	Computes the volume-averaged, energy-integrated fission or nu-fission rate in each FSR and stores them in an array indexed by FSR ID. More...

void	printInputParamsSummary ()
	A function that prints a summary of the input parameters.

void	tallyScalarFlux (segment curr_segment, int azim_index, int polar_index, FP_PRECISION fsr_flux, float *track_flux)
	Computes the contribution to the FSR scalar flux from a Track segment. More...

void	accumulateScalarFluxContribution (long fsr_id, FP_PRECISION weight, FP_PRECISION *fsr_flux)
	Move the segment(s)' contributions to the scalar flux from the buffer to the global scalar flux array. More...

void	tallyCurrent (segment curr_segment, int azim_index, int polar_index, float track_flux, bool fwd)
	Tallies the current contribution from this segment across the the appropriate CMFD mesh cell surface. More...

void	transferBoundaryFlux (Track track, int azim_index, int polar_index, bool direction, float track_flux)
	Updates the boundary flux for a Track given boundary conditions. More...

void	getFluxes (FP_PRECISION *out_fluxes, int num_fluxes)
	Fills an array with the scalar fluxes. More...

void	initializeFixedSources ()
	Populates array of fixed sources assigned by FSR.

void	printFSRFluxes (std::vector< double > dim1, std::vector< double > dim2, double offset, const char *plane)
	A function that prints the source region fluxes on a 2D mesh grid. More...

void	printFluxesTemp ()
	A function that prints fsr fluxes in xy plane at z=middle. More...

void	printNegativeSources (int iteration, int num_x, int num_y, int num_z)
	A function that prints the number of FSRs with negative sources in the whole geometry subdivided by a 3D lattice. The number of negative sources per energy group is also printed out. More...

Public Member Functions inherited from Solver
	Solver (TrackGenerator *track_generator=NULL)
	Constructor initializes an empty Solver class with array pointers set to NULL. More...

virtual	~Solver ()
	Destructor deletes arrays of boundary angular fluxes, scalar fluxes and sources for each FSR and energy group. More...

void	setGeometry (Geometry *geometry)
	Sets the Geometry for the Solver. More...

Geometry *	getGeometry ()
	Returns a pointer to the Geometry. More...

TrackGenerator *	getTrackGenerator ()
	Returns a pointer to the TrackGenerator. More...

FP_PRECISION	getFSRVolume (long fsr_id)
	Returns the calculated volume for a flat source region. More...

int	getNumPolarAngles ()
	Returns the number of angles used for the polar quadrature. More...

int	getNumIterations ()
	Returns the number of source iterations to converge the source. More...

double	getTotalTime ()
	Returns the total time to converge the source (seconds). More...

double	getKeff ()
	Returns the converged eigenvalue $k_{eff}$ . More...

double	getConvergenceThreshold ()
	Returns the threshold for source/flux convergence. More...

FP_PRECISION	getMaxOpticalLength ()
	Get the maximum allowable optical length for a track segment. More...

bool	isUsingDoublePrecision ()
	Returns whether the solver is using double floating point precision. More...

bool	isUsingExponentialInterpolation ()
	Returns whether the Solver uses linear interpolation to compute exponentials. More...

bool	is3D ()
	Returns whether the Solver is tackling a 3D problem. More...

void	initializeSolver (solverMode solver_mode)
	Initializes most components of Solver. Mostly needed from the Python side.

void	printFissionRates (std::string fname, int nx, int ny, int nz)
	Prints fission rates to a binary file. More...

void	setKeffFromNeutronBalance ()
	Sets computation method of k-eff from fission, absorption, and leakage rates rather than from fission rates. keff = fission/(absorption + leakage)

void	setResidualByReference (std::string fname)
	Sets residuals to be computed a error relative to a reference. More...

void	dumpFSRFluxes (std::string fname)
	Prints scalar fluxes to a binary file. More...

void	loadInitialFSRFluxes (std::string fname)
	Load the initial scalar flux distribution from a binary file. More...

void	loadFSRFluxes (std::string fname, bool assign_k_eff=false, double tolerance=0.01)
	Load scalar fluxes from a binary file. More...

double	getFlux (long fsr_id, int group)
	Returns the scalar flux for some FSR and energy group. More...

double	getFSRSource (long fsr_id, int group)
	Returns the source for some energy group for a flat source region. More...

void	setTrackGenerator (TrackGenerator *track_generator)
	Sets the Solver's TrackGenerator with characteristic Tracks. More...

void	setConvergenceThreshold (double threshold)
	Sets the threshold for source/flux convergence. More...

virtual void	setFixedSourceByFSR (long fsr_id, int group, double source)
	Assign a fixed source for a flat source region and energy group. More...

void	setFixedSourceByCell (Cell *cell, int group, double source)
	Assign a fixed source for a Cell and energy group. More...

void	setFixedSourceByMaterial (Material *material, int group, double source)
	Assign a fixed source for a Material and energy group. More...

void	setMaxOpticalLength (FP_PRECISION max_optical_length)
	Set the maximum allowable optical length for a track segment. More...

void	setExpPrecision (double precision)
	Set the precision, or maximum allowable approximation error, of the the exponential interpolation table. More...

void	useExponentialInterpolation ()
	Informs the Solver to use linear interpolation to compute the exponential in the transport equation.

void	useExponentialIntrinsic ()
	Informs the Solver to use the exponential intrinsic exp(...) function to compute the exponential in the transport equation.

void	setSolverMode (solverMode solver_mode)
	Choose between direct and adjoint mode. More...

void	setRestartStatus (bool is_restart)
	Informs the Solver that this is a 'restart' calculation and therefore k_eff, track angular and region scalar fluxes should not be reset. More...

void	allowNegativeFluxes (bool negative_fluxes_on)
	Informs the Solver that this calculation may involve negative fluxes for computing higher eigenmodes for example. More...

void	correctXS ()
	Directs OpenMOC to correct unphysical cross-sections. More...

void	stabilizeTransport (double stabilization_factor, stabilizationType stabilization_type=DIAGONAL)
	Directs OpenMOC to use the diagonal stabilizing correction to the source iteration transport sweep. More...

void	setInitialSpectrumCalculation (double threshold)
	Instructs OpenMOC to perform an initial spectrum calculation. More...

void	setCheckXSLogLevel (logLevel log_level)
	Determines which log level to set cross-section warnings. More...

void	setChiSpectrumMaterial (Material *material)
	Sets the chi spectrum for use as an inital flux guess. More...

void	resetMaterials (solverMode mode)
	Returns the Material data to its original state. More...

void	fissionTransportSweep ()
	This method performs one transport sweep using the fission source. More...

void	scatterTransportSweep ()
	This method performs one transport sweep using the scatter source. More...

void	computeFlux (int max_iters=1000, bool only_fixed_source=true)
	Computes the scalar flux distribution by performing a series of transport sweeps. More...

void	computeSource (int max_iters=1000, double k_eff=1.0, residualType res_type=TOTAL_SOURCE)
	Computes the total source distribution by performing a series of transport sweep and source updates. More...

void	computeEigenvalue (int max_iters=1000, residualType res_type=FISSION_SOURCE)
	Computes keff by performing a series of transport sweep and source updates. More...

void	printBGQMemory ()

float *	getBoundaryFlux (long track_id, bool fwd)
	Returns the boundary flux array at the requested indexes. More...

void	setVerboseIterationReport ()
	Sets the solver to print extra information for each iteration.

void	printTimerReport ()
	Prints a report of the timing statistics to the console.

FP_PRECISION *	getFluxesArray ()
	A function that returns the array of scalar fluxes. More...

void	limitXS ()
	Limits cross-sections so that there are no negative cross-sections. More...

void	setLimitingXSMaterials (std::vector< int > material_ids, int reset_iteration)
	Instructs MOC to limit negative cross-sections for early iterations. More...

void	checkLimitXS (int iteration)
	Checks to see if limited XS should be reset. More...

void	setOTFTransport ()
	Activate On-The-Fly transport, to OTF ray-trace and propagate the track angular fluxes at the same time.

Protected Member Functions
virtual void	initializeFluxArrays ()
	Allocates memory for Track boundary angular flux and leakage and FSR scalar flux arrays. More...

virtual void	initializeSourceArrays ()
	Allocates memory for FSR source arrays. More...

virtual void	initializeFSRs ()
	Initializes the FSR volumes and Materials array. More...

void	zeroTrackFluxes ()
	Zero each Track's boundary fluxes for each energy group (and polar angle in 2D) in the "forward" and "reverse" directions.

void	copyBoundaryFluxes ()
	Copies values from the start flux into the boundary flux array for both the "forward" and "reverse" directions.

void	tallyStartingCurrents ()
	Computes the total current impingent on boundary CMFD cells from starting angular fluxes.

virtual void	flattenFSRFluxes (FP_PRECISION value)
	Set the scalar flux for each FSR and energy group to some value. More...

void	flattenFSRFluxesChiSpectrum ()
	Set the scalar flux for each FSR to a chi spectrum.

void	storeFSRFluxes ()
	Stores the FSR scalar fluxes in the old scalar flux array.

virtual double	normalizeFluxes ()
	Normalizes all FSR scalar fluxes and Track boundary angular fluxes to the total fission source (times $\nu$ ).

void	computeFSRFissionSources ()
	Computes the total fission source in each FSR. More...

void	computeFSRScatterSources ()
	Computes the total scattering source in each FSR. More...

virtual void	computeFSRSources (int iteration)
	Computes the total source (fission, scattering, fixed) in each FSR. More...

void	transportSweep ()
	This method performs one transport sweep of all azimuthal angles, Tracks, Track segments, polar angles and energy groups. More...

virtual void	computeStabilizingFlux ()
	Computes the stabilizing flux for transport stabilization.

virtual void	stabilizeFlux ()
	Adjusts the scalar flux for transport stabilization.

virtual void	addSourceToScalarFlux ()
	Add the source term contribution in the transport equation to the FSR scalar flux.

void	computeKeff ()
	Compute $k_{eff}$ from successive fission sources.

double	computeResidual (residualType res_type)
	Computes the residual between source/flux iterations. More...

Protected Member Functions inherited from Solver
virtual void	initializeExpEvaluators ()
	Initializes new ExpEvaluator object to compute exponentials.

void	initializeMaterials (solverMode mode)
	Initializes the Material's production matrices. More...

void	countFissionableFSRs ()
	Counts the number of fissionable flat source regions. More...

void	checkXS ()
	All material cross-sections in the geometry are checked for consistency. More...

virtual void	initializeCmfd ()
	Initializes a Cmfd object for acceleration prior to source iteration. More...

void	calculateInitialSpectrum (double threshold)
	Performs a spectrum calculation to update the scalar fluxes. More...

void	clearTimerSplits ()
	Deletes the Timer's timing entries for each timed code section code in the source convergence loop. More...

Protected Attributes
int	_num_threads

omp_lock_t *	_FSR_locks

Protected Attributes inherited from Solver
int	_num_azim

int	_num_groups

long	_num_FSRs

long	_num_fissionable_FSRs

FP_PRECISION *	_FSR_volumes

Material **	_FSR_materials

Material *	_chi_spectrum_material

TrackGenerator *	_track_generator

Geometry *	_geometry

int	_num_materials

Quadrature *	_quad

int	_num_polar

int	_fluxes_per_track

Track **	_tracks

std::vector< int >	_limit_xs_materials

int	_reset_iteration

bool	_limit_xs

std::map< int, Material * >	_original_materials

std::map< int, Material * >	_limit_materials

int ***	_tracks_per_stack

bool	_SOLVE_3D

solverMode	_solver_mode

bool	_is_restart

bool	_user_fluxes

bool	_fixed_sources_on

bool	_correct_xs

bool	_stabilize_transport

bool	_verbose

bool	_calculate_initial_spectrum

double	_initial_spectrum_thresh

bool	_load_initial_FSR_fluxes

bool	_calculate_residuals_by_reference

bool	_negative_fluxes_allowed

std::string	_initial_FSR_fluxes_file

std::string	_reference_file

logLevel	_xs_log_level

segmentationType	_segment_formation

long	_tot_num_tracks

float *	_boundary_flux

float *	_start_flux

float *	_boundary_leakage

FP_PRECISION *	_scalar_flux

FP_PRECISION *	_old_scalar_flux

FP_PRECISION *	_reference_flux

FP_PRECISION *	_stabilizing_flux

FP_PRECISION *	_fixed_sources

std::vector< FP_PRECISION * >	_groupwise_scratch

double *	_regionwise_scratch

std::map< std::pair< int, int >, FP_PRECISION >	_fix_src_FSR_map

std::map< std::pair< Cell *, int >, FP_PRECISION >	_fix_src_cell_map

std::map< std::pair< Material *, int >, FP_PRECISION >	_fix_src_material_map

FP_PRECISION *	_reduced_sources

double	_k_eff

bool	_keff_from_fission_rates

int	_num_iterations

double	_converge_thresh

double	_stabilization_factor

stabilizationType	_stabilization_type

ExpEvaluator ***	_exp_evaluators

int	_num_exp_evaluators_azim

int	_num_exp_evaluators_polar

Timer *	_timer

Cmfd *	_cmfd

std::string	_source_type

bool	_OTF_transport

Detailed Description

This a subclass of the Solver class for multi-core CPUs using OpenMP multi-threading.

Constructor & Destructor Documentation

◆ CPUSolver()

CPUSolver::CPUSolver ( TrackGenerator * track_generator = NULL )

Constructor initializes array pointers for Tracks and Materials.

The constructor retrieves the number of energy groups and FSRs and azimuthal angles from the Geometry and TrackGenerator if passed in as parameters by the user. The constructor initalizes the number of OpenMP threads to a default of 1.

Parameters

track_generator an optional pointer to the TrackGenerator

Member Function Documentation

◆ accumulateScalarFluxContribution()

void CPUSolver::accumulateScalarFluxContribution	(	long	fsr_id,
		FP_PRECISION	weight,
		FP_PRECISION *	fsr_flux
	)

Move the segment(s)' contributions to the scalar flux from the buffer to the global scalar flux array.

Parameters

fsr_id	the id of the fsr
weight	the quadrature weight (only for 3D ray tracing)
fsr_flux	the buffer containing the segment(s)' contribution

◆ computeFSRFissionRates()

void CPUSolver::computeFSRFissionRates	(	double *	fission_rates,
		long	num_FSRs,
		bool	nu = `false`
	)

virtual

Computes the volume-averaged, energy-integrated fission or nu-fission rate in each FSR and stores them in an array indexed by FSR ID.

This is a helper method for SWIG to allow users to retrieve FSR fission or nu-fission rates as a NumPy array. An example of how this method can be called from Python is as follows:

num_FSRs = geometry.getNumFSRs()

fission_rates = solver.computeFSRFissionRates(num_FSRs)

Parameters

fission_rates	an array to store the fission rates (implicitly passed in as a NumPy array from Python)
num_FSRs	the number of FSRs passed in from Python
nu	whether return nu-fission (true) or fission (default, false) rates

Implements Solver.

◆ computeFSRFissionSources()

void CPUSolver::computeFSRFissionSources ( )

protectedvirtual

Computes the total fission source in each FSR.

This method is a helper routine for the openmoc.krylov submodule.

Implements Solver.

◆ computeFSRScatterSources()

void CPUSolver::computeFSRScatterSources ( )

protectedvirtual

Computes the total scattering source in each FSR.

This method is a helper routine for the openmoc.krylov submodule.

Implements Solver.

◆ computeFSRSources()

void CPUSolver::computeFSRSources ( int iteration )

protectedvirtual

Computes the total source (fission, scattering, fixed) in each FSR.

This method computes the total source in each FSR based on this iteration's current approximation to the scalar flux.

Implements Solver.

Reimplemented in CPULSSolver, and VectorizedSolver.

◆ computeResidual()

double CPUSolver::computeResidual ( residualType res_type )

protectedvirtual

Computes the residual between source/flux iterations.

Parameters

res_type the type of residuals to compute (SCALAR_FLUX, FISSION_SOURCE, TOTAL_SOURCE)

Returns: the average residual in each FSR

Implements Solver.

◆ flattenFSRFluxes()

void CPUSolver::flattenFSRFluxes ( FP_PRECISION value )

protectedvirtual

Set the scalar flux for each FSR and energy group to some value.

Parameters

value the value to assign to each FSR scalar flux

Implements Solver.

Reimplemented in CPULSSolver.

◆ getFluxes()

void CPUSolver::getFluxes	(	FP_PRECISION *	out_fluxes,
		int	num_fluxes
	)

virtual

Fills an array with the scalar fluxes.

This class method is a helper routine called by the OpenMOC Python "openmoc.krylov" module for Krylov subspace methods. Although this method appears to require two arguments, in reality it only requires one due to SWIG and would be called from within Python as follows:

num_fluxes = num_groups * num_FSRs

fluxes = solver.getFluxes(num_fluxes)

Parameters

out_fluxes	an array of FSR scalar fluxes in each energy group
num_fluxes	the total number of FSR flux values

Implements Solver.

◆ getNumThreads()

int CPUSolver::getNumThreads ( )

Returns the number of shared memory OpenMP threads in use.

Returns: the number of threads

◆ initializeFluxArrays()

void CPUSolver::initializeFluxArrays ( )

protectedvirtual

Allocates memory for Track boundary angular flux and leakage and FSR scalar flux arrays.

Deletes memory for old flux arrays if they were allocated for a previous simulation.

Implements Solver.

Reimplemented in CPULSSolver, and VectorizedSolver.

◆ initializeFSRs()

void CPUSolver::initializeFSRs ( )

protectedvirtual

Initializes the FSR volumes and Materials array.

This method allocates and initializes an array of OpenMP mutual exclusion locks for each FSR for use in the transport sweep algorithm.

Reimplemented from Solver.

Reimplemented in CPULSSolver.

◆ initializeSourceArrays()

void CPUSolver::initializeSourceArrays ( )

protectedvirtual

Allocates memory for FSR source arrays.

Deletes memory for old source arrays if they were allocated for a previous simulation.

Implements Solver.

Reimplemented in CPULSSolver, and VectorizedSolver.

◆ printFluxesTemp()

void CPUSolver::printFluxesTemp ( )

A function that prints fsr fluxes in xy plane at z=middle.

Recommend deletion, since redundant printFluxes

◆ printFSRFluxes()

void CPUSolver::printFSRFluxes	(	std::vector< double >	dim1,
		std::vector< double >	dim2,
		double	offset,
		const char *	plane
	)

A function that prints the source region fluxes on a 2D mesh grid.

Parameters

dim1	coordinates of the mesh grid in the first direction
dim2	coordinates of the mesh grid in the second direction
offset	The location of the mesh grid center on the perpendicular axis
plane	'xy', 'xz' or 'yz' the plane in which the mesh grid lies

◆ printNegativeSources()

void CPUSolver::printNegativeSources	(	int	iteration,
		int	num_x,
		int	num_y,
		int	num_z
	)

A function that prints the number of FSRs with negative sources in the whole geometry subdivided by a 3D lattice. The number of negative sources per energy group is also printed out.

Parameters

iteration	the current iteration
num_x	number of divisions in X direction
num_y	number of divisions in Y direction
num_z	number of divisions in Z direction

◆ setFixedSourceByFSR()

void CPUSolver::setFixedSourceByFSR	(	long	fsr_id,
		int	group,
		FP_PRECISION	source
	)

Assign a fixed source for a flat source region and energy group.

Fixed sources should be scaled to reflect the fact that OpenMOC normalizes the scalar flux such that the total energy- and volume-integrated production rate sums to 1.0.

Parameters

fsr_id	the flat source region ID
group	the energy group
source	the volume-averaged source in this group

◆ setFluxes()

void CPUSolver::setFluxes	(	FP_PRECISION *	in_fluxes,
		int	num_fluxes
	)

virtual

Set the flux array for use in transport sweep source calculations.

This is a helper method for the checkpoint restart capabilities, as well as the IRAMSolver in the openmoc.krylov submodule. This routine may be used as follows from within Python:

fluxes = numpy.random.rand(num_FSRs * num_groups, dtype=np.float)

solver.setFluxes(fluxes)

     NOTE: This routine stores a pointer to the fluxes for the Solver
     to use during transport sweeps and other calculations. Hence, the
     flux array pointer is shared between NumPy and the Solver.

Parameters

in_fluxes	an array with the fluxes to use
num_fluxes	the number of flux values (# groups x # FSRs)

Implements Solver.

◆ setNumThreads()

void CPUSolver::setNumThreads ( int num_threads )

Sets the number of shared memory OpenMP threads to use (>0).

Parameters

num_threads the number of threads

◆ tallyCurrent()

void CPUSolver::tallyCurrent	(	segment *	curr_segment,
		int	azim_index,
		int	polar_index,
		float *	track_flux,
		bool	fwd
	)

Tallies the current contribution from this segment across the the appropriate CMFD mesh cell surface.

Parameters

curr_segment	a pointer to the Track segment of interest
azim_index	the azimuthal index for this segment
polar_index	the polar index for this segmenbt
track_flux	a pointer to the Track's angular flux
fwd	boolean indicating direction of integration along segment

◆ tallyScalarFlux()

void CPUSolver::tallyScalarFlux	(	segment *	curr_segment,
		int	azim_index,
		int	polar_index,
		FP_PRECISION *	fsr_flux,
		float *	track_flux
	)

Computes the contribution to the FSR scalar flux from a Track segment.

This method integrates the angular flux for a Track segment across energy groups and polar angles, and tallies it into the FSR scalar flux, and updates the Track's angular flux.

Parameters

curr_segment	a pointer to the Track segment of interest
azim_index	azimuthal angle index for this segment
polar_index	polar angle index for this segment
fsr_flux	buffer to store the contribution to the region's scalar flux
track_flux	a pointer to the Track's angular flux

◆ transferBoundaryFlux()

void CPUSolver::transferBoundaryFlux	(	Track *	track,
		int	azim_index,
		int	polar_index,
		bool	direction,
		float *	track_flux
	)

Updates the boundary flux for a Track given boundary conditions.

For reflective boundary conditions, the outgoing boundary flux for the Track is given to the reflecting Track. For vacuum boundary conditions, the outgoing flux is tallied as leakage.

Parameters

track	a pointer to the Track of interest
azim_index	azimuthal angle index for this segment
polar_index	polar angle index for this segment
direction	the Track direction (forward - true, reverse - false)
track_flux	a pointer to the Track's outgoing angular flux

◆ transportSweep()

void CPUSolver::transportSweep ( )

protectedvirtual

This method performs one transport sweep of all azimuthal angles, Tracks, Track segments, polar angles and energy groups.

The method integrates the flux along each Track and updates the boundary fluxes for the corresponding output Track, while updating the scalar flux in each flat source region.

Implements Solver.

Member Data Documentation

◆ _FSR_locks

omp_lock_t* CPUSolver::_FSR_locks

protected

OpenMP mutual exclusion locks for atomic FSR scalar flux updates

◆ _num_threads

int CPUSolver::_num_threads

protected

The number of shared memory OpenMP threads

The documentation for this class was generated from the following files:

/home/guillaume/Research/OpenMOC/src/CPUSolver.h
/home/guillaume/Research/OpenMOC/src/CPUSolver.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ CPUSolver()

Member Function Documentation

◆ accumulateScalarFluxContribution()

◆ computeFSRFissionRates()

◆ computeFSRFissionSources()

◆ computeFSRScatterSources()

◆ computeFSRSources()

◆ computeResidual()

◆ flattenFSRFluxes()

◆ getFluxes()

◆ getNumThreads()

◆ initializeFluxArrays()

◆ initializeFSRs()

◆ initializeSourceArrays()

◆ printFluxesTemp()

◆ printFSRFluxes()

◆ printNegativeSources()

◆ setFixedSourceByFSR()

◆ setFluxes()

◆ setNumThreads()

◆ tallyCurrent()

◆ tallyScalarFlux()

◆ transferBoundaryFlux()

◆ transportSweep()

Member Data Documentation

◆ _FSR_locks

◆ _num_threads