Merge branch 'event-based-device' into particle_owned_seeds2

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John Tramm 2019-12-05 11:55:59 -06:00 committed by GitHub
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11 changed files with 873 additions and 44 deletions

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@ -25,8 +25,749 @@
#endif
#include "xtensor/xview.hpp"
#ifdef OPENMC_MPI
#include <mpi.h>
#endif
#include <algorithm>
#include <string>
#include <chrono>
namespace openmc {
/*
extern std::vector<Particle*> calculate_fuel_xs_queue;
extern std::vector<Particle*> calculate_nonfuel_xs_queue;
extern std::vector<Particle*> advance_particle_queue;
extern std::vector<Particle*> surface_crossing_queue;
extern std::vector<Particle*> collision_queue;
#pragma omp threadprivate(calculate_fuel_xs_queue, calculate_nonfuel_xs_queue, advance_particle_queue, surface_crossing_queue, collision_queue)
std::vector<Particle*> calculate_fuel_xs_queue;
std::vector<Particle*> calculate_nonfuel_xs_queue;
std::vector<Particle*> advance_particle_queue;
std::vector<Particle*> surface_crossing_queue;
std::vector<Particle*> collision_queue;
*/
struct QueueItem{
int idx; // particle index in event-based buffer
double E; // particle energy
int material; // material that particle is in
};
bool by_energy (QueueItem a, QueueItem b) { return (a.E < b.E); }
bool by_material (QueueItem a, QueueItem b) { return (a.material < b.material); }
QueueItem * calculate_fuel_xs_queue;
QueueItem * calculate_nonfuel_xs_queue;
QueueItem * advance_particle_queue;
QueueItem * surface_crossing_queue;
QueueItem * collision_queue;
Particle * particles;
int calculate_fuel_xs_queue_length = 0;
int calculate_nonfuel_xs_queue_length = 0;
int advance_particle_queue_length = 0;
int surface_crossing_queue_length = 0;
int collision_queue_length = 0;
const int MAX_PARTICLES_IN_FLIGHT = 100000;
void init_event_queues(int n_particles)
{
calculate_fuel_xs_queue = new QueueItem[n_particles];
calculate_nonfuel_xs_queue = new QueueItem[n_particles];
advance_particle_queue = new QueueItem[n_particles];
surface_crossing_queue = new QueueItem[n_particles];
collision_queue = new QueueItem[n_particles];
particles = new Particle[n_particles];
}
void free_event_queues(void)
{
delete calculate_fuel_xs_queue;
delete calculate_nonfuel_xs_queue;
delete advance_particle_queue;
delete surface_crossing_queue;
delete collision_queue;
delete[] particles;
}
constexpr size_t MAX_PARTICLES_PER_THREAD {100};
Particle::Bank * shared_fission_bank;
int shared_fission_bank_length = 0;
int shared_fission_bank_max;
void init_shared_fission_bank(int max)
{
shared_fission_bank_max = max;
shared_fission_bank = new Particle::Bank[max];
}
void free_shared_fission_bank(void)
{
delete[] shared_fission_bank;
shared_fission_bank_length = 0;
}
// TODO: What is going on here?
void revive_particle_from_secondary(Particle* p)
{
//p->from_source(&simulation::secondary_bank.back());
p->from_source(&p->secondary_bank_.back());
//simulation::secondary_bank.pop_back();
p->secondary_bank_.pop_back();
// n_event = 0;
// Enter new particle in particle track file
if (p->write_track_) add_particle_track();
}
void dispatch_xs_event(int i)
{
Particle * p = particles + i;
int idx;
if (p->material_ == MATERIAL_VOID) {
#pragma omp atomic capture
idx = calculate_nonfuel_xs_queue_length++;
//std::cout << "Dispatching particle to non Fuel XS queue idx = " << idx << std::endl;
calculate_nonfuel_xs_queue[idx].idx = i;
calculate_nonfuel_xs_queue[idx].E = p->E_;
calculate_nonfuel_xs_queue[idx].material = p->material_;
} else {
if (model::materials[p->material_]->fissionable_) {
#pragma omp atomic capture
idx = calculate_fuel_xs_queue_length++;
//std::cout << "Dispatching particle to Fuel XS queue idx = " << idx << std::endl;
calculate_fuel_xs_queue[idx].idx = i;
calculate_fuel_xs_queue[idx].E = p->E_;
calculate_fuel_xs_queue[idx].material = p->material_;
} else {
#pragma omp atomic capture
idx = calculate_nonfuel_xs_queue_length++;
//std::cout << "Dispatching particle to non Fuel XS queue idx = " << idx << std::endl;
calculate_nonfuel_xs_queue[idx].idx = i;
calculate_nonfuel_xs_queue[idx].E = p->E_;
calculate_nonfuel_xs_queue[idx].material = p->material_;
}
}
}
void process_calculate_xs_events(QueueItem * queue, int n)
{
// Sort queue by energy
std::sort(queue, queue+n, by_energy);
// Then, stable sort by material (so as to preserve energy ordering)
std::stable_sort(queue, queue+n, by_material);
// Save last_ members, find grid index
int lost_particles = 0;
#pragma omp parallel for reduction(+:lost_particles)
for (int i = 0; i < n; i++) {
Particle *p = particles + queue[i].idx;
//std::cout << "particle offset = " << queue[i] << std::endl;
// Set the random number stream
// TODO: Move RNG seeds to particle storage
if (p->type_ == Particle::Type::neutron) {
p->stream_ = STREAM_TRACKING;
} else {
p->stream_ = STREAM_PHOTON;
}
// Store pre-collision particle properties
p->wgt_last_ = p->wgt_;
p->E_last_ = p->E_;
p->u_last_ = p->u();
p->r_last_ = p->r();
// If the cell hasn't been determined based on the particle's location,
// initiate a search for the current cell. This generally happens at the
// beginning of the history and again for any secondary particles
if (p->coord_[p->n_coord_ - 1].cell == C_NONE) {
if (!find_cell(p, false)) {
p->mark_as_lost("Could not find the cell containing particle "
+ std::to_string(p->id_));
//return;
lost_particles += 1;
continue;
}
// set birth cell attribute
if (p->cell_born_ == C_NONE) p->cell_born_ = p->coord_[p->n_coord_ - 1].cell;
}
// Write particle track.
if (p->write_track_) write_particle_track(*p);
if (settings::check_overlaps) check_cell_overlap(p);
if (settings::run_CE) {
if (p->material_ == p->material_last_ && p->sqrtkT_ != p->sqrtkT_last_) {
// Remove particle from queue
}
}
// Find energy index on energy grid
// TODO: Calculate this separately?
//int neutron = static_cast<int>(Particle::Type::neutron);
//p->macro_xs_.i_grid = std::log(p->E_/data::energy_min[neutron]) / simulation::log_spacing;
}
if( lost_particles > 0 )
exit(1);
#pragma omp parallel for
for( int i = 0; i < n; i++ )
{
Particle * p = particles + queue[i].idx;
// Calculate microscopic and macroscopic cross sections
if (p->material_ != MATERIAL_VOID) {
if (settings::run_CE) {
if (p->material_ != p->material_last_ || p->sqrtkT_ != p->sqrtkT_last_) {
// If the material is the same as the last material and the
// temperature hasn't changed, we don't need to lookup cross
// sections again.
model::materials[p->material_]->calculate_xs(*p);
}
} // else MG not supported
} else {
p->macro_xs_.total = 0.0;
p->macro_xs_.absorption = 0.0;
p->macro_xs_.fission = 0.0;
p->macro_xs_.nu_fission = 0.0;
}
/*
int idx;
#pragma omp atomic capture
idx = advance_particle_queue_length++;
advance_particle_queue[idx] = queue[i];
*/
}
int start = advance_particle_queue_length;
int end = start + n;
int j = 0;
for( int i = start; i < end; i++ )
{
advance_particle_queue[i].idx = queue[j].idx;
advance_particle_queue[i].E = particles[queue[j].idx].E_;
advance_particle_queue[i].material = particles[queue[j].idx].material_;
j++;
}
advance_particle_queue_length += n;
/*
// Calculate nuclide micros
for (int i = 0; i < data::nuclides.size(); ++i) {
// loop over particles
for (int j = 0; j < n; j++) {
//Particle * p = particles + queue[i];
Particle * p = particles + queue[j];
if (p->material_ == MATERIAL_VOID) continue;
// If material doesn't have this nuclide, skip it
const auto& mat {model::materials[p->material_]};
if (mat->mat_nuclide_index_[i] == -1) continue;
// ======================================================================
// CHECK FOR S(A,B) TABLE
// Check if this nuclide matches one of the S(a,b) tables specified.
// This relies on thermal_tables_ being sorted by .index_nuclide
int i_sab = C_NONE;
double sab_frac = 0.0;
for (const auto& sab : mat->thermal_tables_) {
if (i == sab.index_nuclide) {
// Get index in sab_tables
i_sab = sab.index_table;
sab_frac = sab.fraction;
// If particle energy is greater than the highest energy for the
// S(a,b) table, then don't use the S(a,b) table
//if (p->E_ > data::thermal_scatt[i_sab]->threshold()) i_sab = C_NONE;
std::cout << "S(alpha, beta) max energy = " << data::thermal_scatt[i_sab]->energy_max_ <<std::endl;
if (p->E_ > data::thermal_scatt[i_sab]->energy_max_) i_sab = C_NONE;
}
}
// ======================================================================
// CALCULATE MICROSCOPIC CROSS SECTION
// Calculate microscopic cross section for this nuclide
const auto& micro {p->neutron_xs_[i]};
if (p->E_ != micro.last_E
|| p->sqrtkT_ != micro.last_sqrtkT
|| i_sab != micro.index_sab
|| sab_frac != micro.sab_frac) {
data::nuclides[i]->calculate_xs(i_sab, p->macro_xs_.i_grid, sab_frac, *p);
}
}
}
for (int i = 0; i < n; i++) {
Particle * p = particles + queue[i];
// Calculate microscopic and macroscopic cross sections
if (p->material_ != MATERIAL_VOID) {
// Only works for CE, no MG support
//if (settings::run_CE) {
// If the material is the same as the last material and the
// temperature hasn't changed, we don't need to lookup cross
// sections again.
model::materials[p->material_]->calculate_xs(*p);
}
//else {
//}
else {
p->macro_xs_.total = 0.0;
p->macro_xs_.absorption = 0.0;
p->macro_xs_.fission = 0.0;
p->macro_xs_.nu_fission = 0.0;
}
int idx;
#pragma omp atomic capture
idx = advance_particle_queue_length++;
advance_particle_queue[idx] = queue[i];
}
*/
}
void process_advance_particle_events()
{
//for (auto& p : advance_particle_queue) {
#pragma omp parallel for
for (int i = 0; i < advance_particle_queue_length; i++) {
Particle * p = particles + advance_particle_queue[i].idx;
simulation::trace == (p->id_ == 0);
// Sample a distance to collision
double d_collision;
if (p->type_ == Particle::Type::electron ||
p->type_ == Particle::Type::positron) {
d_collision = 0.0;
} else if (p->macro_xs_.total == 0.0) {
d_collision = INFINITY;
} else {
d_collision = -std::log(prn(p->prn_seeds_, p->stream_)) / p->macro_xs_.total;
}
// -------------- break here? -------------------
// Find the distance to the nearest boundary
p->boundary_ = distance_to_boundary(p);
// Select smaller of the two distances
double distance;
int idx;
if (p->boundary_.distance < d_collision) {
#pragma omp atomic capture
idx = surface_crossing_queue_length++;
surface_crossing_queue[idx].idx = advance_particle_queue[i].idx;
surface_crossing_queue[idx].E = p->E_;
surface_crossing_queue[idx].material = p->material_;
distance = p->boundary_.distance;
} else {
#pragma omp atomic capture
idx = collision_queue_length++;
collision_queue[idx].idx = advance_particle_queue[i].idx;
collision_queue[idx].E = p->E_;
collision_queue[idx].material = p->material_;
distance = d_collision;
}
// -------------- break here? -------------------
// Advance particle
for (int j = 0; j < p->n_coord_; ++j) {
p->coord_[j].r += distance * p->coord_[j].u;
}
// -------------- break here? -------------------
// Score track-length tallies
if (!model::active_tracklength_tallies.empty()) {
score_tracklength_tally(p, distance);
}
// Score track-length estimate of k-eff
if (settings::run_mode == RUN_MODE_EIGENVALUE &&
p->type_ == Particle::Type::neutron) {
global_tally_tracklength += p->wgt_ * distance * p->macro_xs_.nu_fission;
}
// Score flux derivative accumulators for differential tallies.
if (!model::active_tallies.empty()) {
score_track_derivative(p, distance);
}
}
advance_particle_queue_length = 0;
}
void process_surface_crossing_events()
{
//for (auto& p : surface_crossing_queue) {
#pragma omp parallel for
for (int i = 0; i < surface_crossing_queue_length; i++) {
Particle * p = particles + surface_crossing_queue[i].idx;
// Set surface that particle is on and adjust coordinate levels
p->surface_ = p->boundary_.surface_index;
p->n_coord_ = p->boundary_.coord_level;
// Saving previous cell data
for (int j = 0; j < p->n_coord_; ++j) {
p->cell_last_[j] = p->coord_[j].cell;
}
p->n_coord_last_ = p->n_coord_;
if (p->boundary_.lattice_translation[0] != 0 ||
p->boundary_.lattice_translation[1] != 0 ||
p->boundary_.lattice_translation[2] != 0) {
// Particle crosses lattice boundary
cross_lattice(p, p->boundary_);
p->event_ = EVENT_LATTICE;
} else {
// Particle crosses surface
p->cross_surface();
p->event_ = EVENT_SURFACE;
}
// Score cell to cell partial currents
if (!model::active_surface_tallies.empty()) {
score_surface_tally(p, model::active_surface_tallies);
}
//if (!p->alive_ && !simulation::secondary_bank.empty()) {
if (!p->alive_ && !p->secondary_bank_.empty()) {
revive_particle_from_secondary(p);
}
if (p->alive_)
{
dispatch_xs_event(surface_crossing_queue[i].idx);
}
}
surface_crossing_queue_length = 0;
}
void process_collision_events()
{
//for (auto& p : collision_queue) {
#pragma omp parallel for
for (int i = 0; i < collision_queue_length; i++) {
Particle * p = particles + collision_queue[i].idx;
//std::cout << "Beginning collision of particle id " << collision_queue[i] << " with energy E = " << p->E_ << std::endl;
// Score collision estimate of keff
if (settings::run_mode == RUN_MODE_EIGENVALUE &&
p->type_ == Particle::Type::neutron) {
global_tally_collision += p->wgt_ * p->macro_xs_.nu_fission
/ p->macro_xs_.total;
}
// Score surface current tallies -- this has to be done before the collision
// since the direction of the particle will change and we need to use the
// pre-collision direction to figure out what mesh surfaces were crossed
if (!model::active_meshsurf_tallies.empty())
score_surface_tally(p, model::active_meshsurf_tallies);
//std::cout << "After surface tally of particle id " << collision_queue[i] << " with energy E = " << p->E_ << std::endl;
// Clear surface component
p->surface_ = 0;
if (settings::run_CE) {
collision(p);
} else {
collision_mg(p);
}
//std::cout << "After collision() of particle id " << collision_queue[i] << " with energy E = " << p->E_ << std::endl;
// Score collision estimator tallies -- this is done after a collision
// has occurred rather than before because we need information on the
// outgoing energy for any tallies with an outgoing energy filter
if (!model::active_collision_tallies.empty()) score_collision_tally(p);
if (!model::active_analog_tallies.empty()) {
if (settings::run_CE) {
score_analog_tally_ce(p);
} else {
score_analog_tally_mg(p);
}
}
//std::cout << "After analog tally of particle id " << collision_queue[i] << " with energy E = " << p->E_ << std::endl;
// Reset banked weight during collision
p->n_bank_ = 0;
p->n_bank_second_ = 0;
p->wgt_bank_ = 0.0;
for (int& v : p->n_delayed_bank_) v = 0;
// Reset fission logical
p->fission_ = false;
// Save coordinates for tallying purposes
p->r_last_current_ = p->r();
// Set last material to none since cross sections will need to be
// re-evaluated
p->material_last_ = C_NONE;
// Set all directions to base level -- right now, after a collision, only
// the base level directions are changed
for (int j = 0; j < p->n_coord_ - 1; ++j) {
if (p->coord_[j + 1].rotated) {
// If next level is rotated, apply rotation matrix
const auto& m {model::cells[p->coord_[j].cell]->rotation_};
const auto& u {p->coord_[j].u};
p->coord_[j + 1].u.x = m[3]*u.x + m[4]*u.y + m[5]*u.z;
p->coord_[j + 1].u.y = m[6]*u.x + m[7]*u.y + m[8]*u.z;
p->coord_[j + 1].u.z = m[9]*u.x + m[10]*u.y + m[11]*u.z;
} else {
// Otherwise, copy this level's direction
p->coord_[j+1].u = p->coord_[j].u;
}
}
// Score flux derivative accumulators for differential tallies.
if (!model::active_tallies.empty()) score_collision_derivative(p);
//if (!p->alive_ && !simulation::secondary_bank.empty()) {
if (!p->alive_ && !p->secondary_bank_.empty()) {
revive_particle_from_secondary(p);
}
if (p->alive_)
{
dispatch_xs_event(collision_queue[i].idx);
//std::cout << "Ended collision of particle id " << collision_queue[i] << " with energy E = " << p->E_ << std::endl;
assert(std::isfinite(p->E_) );
}
}
collision_queue_length = 0;
}
/*
void check_energies(void)
{
int * Q;
int n;
Q = calculate_fuel_xs_queue;
n = calculate_fuel_xs_queue_length;
for( int i = 0; i < n; i++ )
{
if( !std::isfinite(particles[Q[i]].E_ ) )
{
std::cout << "NAN energy particle found at index xs FUEL " << Q[i] << std::endl;
assert(0);
}
}
Q = calculate_nonfuel_xs_queue;
n = calculate_nonfuel_xs_queue_length ;
for( int i = 0; i < n; i++ )
{
if( !std::isfinite(particles[Q[i]].E_ ) )
{
std::cout << "NAN energy particle found at index xs Non fuel " << Q[i] << std::endl;
assert(0);
}
}
Q = advance_particle_queue;
n = advance_particle_queue_length ;
for( int i = 0; i < n; i++ )
{
if( !std::isfinite(particles[Q[i]].E_ ) )
{
std::cout << "NAN energy particle found at index advance particle " << Q[i] << std::endl;
assert(0);
}
}
Q = surface_crossing_queue;
n = surface_crossing_queue_length ;
for( int i = 0; i < n; i++ )
{
if( !std::isfinite(particles[Q[i]].E_ ) )
{
std::cout << "NAN energy particle found at index surface crossing " << Q[i] << std::endl;
assert(0);
}
}
Q = collision_queue;
n = collision_queue_length ;
for( int i = 0; i < n; i++ )
{
if( !std::isfinite(particles[Q[i]].E_ ) )
{
std::cout << "NAN energy particle found at index collision " << Q[i] << std::endl;
assert(0);
}
}
}
*/
double get_time()
{
#ifdef _OPENMP
return omp_get_wtime();
#endif
#ifdef OPENMC_MPI
return MPI_Wtime();
#endif
unsigned long us_since_epoch = std::chrono::high_resolution_clock::now().time_since_epoch() / std::chrono::microseconds(1);
return (double) us_since_epoch / 1.0e6;
}
void transport()
{
int remaining_work = simulation::work_per_rank;
int source_offset = 0;
int max_n_particles = MAX_PARTICLES_IN_FLIGHT;
if( max_n_particles > remaining_work)
max_n_particles = remaining_work;
init_event_queues(max_n_particles);
double time_fuel_xs = 0;
double time_nonfuel_xs = 0;
double time_advance = 0;
double time_collision = 0;
double time_surf = 0;
double stop, start;
// Subiterations to complete sets of particles
while (remaining_work > 0) {
// Figure out work for this subiteration
int n_particles = MAX_PARTICLES_IN_FLIGHT;
if( n_particles > remaining_work)
n_particles = remaining_work;
//std::cout << "Initializing particle histories..." << std::endl;
// Initialize all histories
// TODO: Parallelize
/*
for( int p = 0; p < mpi::n_procs; p++)
{
MPI_Barrier(mpi::intracomm);
if( p == mpi::rank )
{
*/
for (int i = 0; i < n_particles; i++) {
initialize_history(particles + i, source_offset + i + 1);
}
/*
}
}
*/
//std::cout << "Enqueing particles for XS Lookups..." << std::endl;
// Add all particles to advance particle queue
// TODO: Parallelize
for (int i = 0; i < n_particles; i++) {
dispatch_xs_event(i);
}
int event_kernel_executions = 0;
while (true) {
event_kernel_executions++;
/*
std::cout << "Fuel XS Lookups = " << calculate_fuel_xs_queue_length << std::endl;
std::cout << "Non Fuel XS Lookups = " << calculate_nonfuel_xs_queue_length << std::endl;
std::cout << "Advance Particles = " << advance_particle_queue_length << std::endl;
std::cout << "Surface Crossings = " << surface_crossing_queue_length << std::endl;
std::cout << "Collisions = " << collision_queue_length << std::endl;
*/
/*
Particle * p = particles + 1;
std::cout << "E = " << p->E_ << " and Position {" <<
p->r().x << ", " <<
p->r().y << ", " <<
p->r().z << "}" << std::endl;
*/
int max = std::max({calculate_fuel_xs_queue_length, calculate_nonfuel_xs_queue_length, advance_particle_queue_length, surface_crossing_queue_length, collision_queue_length});
//check_energies();
if (max == 0) {
break;
} else if (max == calculate_fuel_xs_queue_length) {
//std::cout << "pre fuel XS check..." << std::endl;
//check_energies(calculate_fuel_xs_queue, calculate_fuel_xs_queue_length);
//std::cout << "Performing Fuel XS Lookups..." << std::endl;
start = get_time();
process_calculate_xs_events(calculate_fuel_xs_queue, calculate_fuel_xs_queue_length);
stop = get_time();
time_fuel_xs += (stop-start);
calculate_fuel_xs_queue_length = 0;
} else if (max == calculate_nonfuel_xs_queue_length) {
//std::cout << "pre non fuel XS check..." << std::endl;
//check_energies(calculate_nonfuel_xs_queue, calculate_nonfuel_xs_queue_length);
// std::cout << "Performing Non Fuel XS Lookups..." << std::endl;
start = get_time();
process_calculate_xs_events(calculate_nonfuel_xs_queue, calculate_nonfuel_xs_queue_length);
stop = get_time();
time_nonfuel_xs += (stop-start);
calculate_nonfuel_xs_queue_length = 0;
} else if (max == advance_particle_queue_length) {
//std::cout << "pre advancing check..." << std::endl;
//check_energies(advance_particle_queue, advance_particle_queue_length);
//std::cout << "Advancing Particles..." << std::endl;
start = get_time();
process_advance_particle_events();
stop = get_time();
time_advance += (stop-start);
} else if (max == surface_crossing_queue_length) {
//std::cout << "pre surface crossing check..." << std::endl;
//check_energies(surface_crossing_queue, surface_crossing_queue_length);
//std::cout << "Surface Crossings..." << std::endl;
start = get_time();
process_surface_crossing_events();
stop = get_time();
time_surf += (stop-start);
} else if (max == collision_queue_length) {
//std::cout << "pre Colliding check..." << std::endl;
//check_energies(collision_queue, collision_queue_length);
//std::cout << "Colliding..." << std::endl;
start = get_time();
process_collision_events();
stop = get_time();
time_collision += (stop-start);
}
}
remaining_work -= n_particles;
source_offset += n_particles;
// Should all be zero
/*
calculate_fuel_xs_queue_length = 0;
calculate_nonfuel_xs_queue_length = 0;
advance_particle_queue_length = 0;
surface_crossing_queue_length = 0;
collision_queue_length = 0;
*/
//std::cout << "Event kernels retired: " << event_kernel_executions << std::endl;
}
if( mpi::rank == 0 )
{
std::cout << "Fuel XS Time: " << time_fuel_xs << std::endl;
std::cout << "Non Fuel XS Time: " << time_nonfuel_xs << std::endl;
std::cout << "Advance Time: " << time_advance << std::endl;
std::cout << "Surface Time: " << time_surf << std::endl;
std::cout << "Collision Time: " << time_collision<< std::endl;
}
//shared_fission_bank_length = 0;
free_event_queues();
}
} // namespace openmc
//==============================================================================
// C API functions
@ -71,6 +812,7 @@ int openmc_simulation_init()
allocate_banks();
// Allocate tally results arrays if they're not allocated yet
for (auto& t : model::tallies) {
t->init_results();
}
@ -185,20 +927,9 @@ int openmc_next_batch(int* status)
// Start timer for transport
simulation::time_transport.start();
// ====================================================================
// LOOP OVER PARTICLES
simulation::current_work = 1;
#pragma omp parallel for schedule(runtime)
for (int64_t i_work = 1; i_work <= simulation::work_per_rank; ++i_work) {
simulation::current_work = i_work;
// grab source particle from bank
Particle p;
initialize_history(&p, simulation::current_work);
// transport particle
p.transport();
}
transport();
// Accumulate time for transport
simulation::time_transport.stop();
@ -409,6 +1140,49 @@ void initialize_generation()
}
}
/*
struct bank_site_comparator
{
inline bool operator() (const Particle::Bank & a, const Particle::Bank & b)
{
if( a.E < b.E )
return true;
else if( a.E > b.E )
return false;
else // Energy equal, compare by x-coord
{
if(a.r.x < b.r.x )
return true;
else if (a.r.x > b.r.x)
return false;
else // x-coord equal, compare by y-coord
{
if(a.r.x < b.r.x )
return true;
else if (a.r.x > b.r.x)
return false;
else // y-coord equal, compare by z-coord
{
if(a.r.y < b.r.y )
return true;
else if (a.r.y > b.r.y)
return false;
else // y-coord equal, compare by z-coord
{
if(a.r.z < b.r.z )
return true;
else if (a.r.z > b.r.z)
return false;
else // they are the same
return false;
}
}
}
}
}
};
*/
void finalize_generation()
{
auto& gt = simulation::global_tallies;
@ -436,11 +1210,14 @@ void finalize_generation()
}
if (settings::run_mode == RUN_MODE_EIGENVALUE) {
#ifdef _OPENMP
// Join the fission bank from each thread into one global fission bank
join_bank_from_threads();
#endif
if (settings::run_mode == RUN_MODE_EIGENVALUE) {
// We need to move all the stuff from the shared_fission_bank into the real one.
for( int i = 0; i < shared_fission_bank_length; i++ )
simulation::fission_bank.push_back(shared_fission_bank[i]);
shared_fission_bank_length = 0;
// Sorts the fission bank so as to allow for reproducibility
std::stable_sort(simulation::fission_bank.begin(), simulation::fission_bank.end());
// Distribute fission bank across processors evenly
synchronize_bank();
@ -498,6 +1275,37 @@ void initialize_history(Particle* p, int64_t index_source)
}
}
}
// Display message if high verbosity or trace is on
if (settings::verbosity >= 9 || simulation::trace) {
write_message("Simulating Particle " + std::to_string(p->id_));
}
// // Initialize number of events to zero
// int n_event = 0;
// Add paricle's starting weight to count for normalizing tallies later
#pragma omp atomic
simulation::total_weight += p->wgt_;
// Force calculation of cross-sections by setting last energy to zero
if (settings::run_CE) {
for (auto& micro : p->neutron_xs_) micro.last_E = 0.0;
}
// Prepare to write out particle track.
if (p->write_track_) add_particle_track();
// Every particle starts with no accumulated flux derivative.
if (!model::active_tallies.empty()) zero_flux_derivs();
/*
std::cout << "Initialized particle " << particle_seed << " with E = " << p->E_ << " and Position {" <<
p->r().x << ", " <<
p->r().y << ", " <<
p->r().z << "}" << std::endl;
*/
}
int overall_generation()