31265430262

Committed 08 Aug 2026 03:49PM UTC coverage: 81.463% (+0.03%) from 81.429%

Build # 31265430262

Build Type

Pull #3971

github

Committed by

web-flow

Commit Message

Merge ca0a9521d into 83a5a51ae

Pull Request Pull Request #3971: Delta tracking

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83.46

/src/event.cpp

#include "openmc/event.h"

#include "openmc/bank.h"
#include "openmc/error.h"
#include "openmc/material.h"
#include "openmc/settings.h"
#include "openmc/simulation.h"
#include "openmc/timer.h"

namespace openmc {

//==============================================================================
// Global variables
//==============================================================================

namespace simulation {

SharedArray<EventQueueItem> calculate_fuel_xs_queue;
SharedArray<EventQueueItem> calculate_nonfuel_xs_queue;
SharedArray<EventQueueItem> advance_particle_queue;
SharedArray<EventQueueItem> surface_crossing_queue;
SharedArray<EventQueueItem> collision_queue;

vector<Particle> particles;

} // namespace simulation

//==============================================================================
// Non-member functions
//==============================================================================

void init_event_queues(int64_t n_particles)
{
  simulation::calculate_fuel_xs_queue.reserve(n_particles);
  simulation::calculate_nonfuel_xs_queue.reserve(n_particles);
  simulation::advance_particle_queue.reserve(n_particles);
  simulation::surface_crossing_queue.reserve(n_particles);
  simulation::collision_queue.reserve(n_particles);

  simulation::particles.resize(n_particles);
}

void free_event_queues(void)
{
  simulation::calculate_fuel_xs_queue.clear();
  simulation::calculate_nonfuel_xs_queue.clear();
  simulation::advance_particle_queue.clear();
  simulation::surface_crossing_queue.clear();
  simulation::collision_queue.clear();

  simulation::particles.clear();
}

void dispatch_xs_event(int64_t buffer_idx)
{
  Particle& p = simulation::particles[buffer_idx];
  if (p.material() == MATERIAL_VOID ||
      !model::materials[p.material()]->fissionable()) {
    simulation::calculate_nonfuel_xs_queue.thread_safe_append({p, buffer_idx});
  } else {
    simulation::calculate_fuel_xs_queue.thread_safe_append({p, buffer_idx});
  }
}

void process_death_events(int64_t n_particles)
{
  simulation::time_event_death.start();
#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < n_particles; i++) {
    Particle& p = simulation::particles[i];
    p.event_death();
  }
  simulation::time_event_death.stop();
}

//==============================================================================
// Functions for surface tracking
//==============================================================================

void process_init_events(int64_t n_particles, int64_t source_offset)
{
  simulation::time_event_init.start();
#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < n_particles; i++) {
    initialize_particle_track(
      simulation::particles[i], source_offset + i + 1, false);
    dispatch_xs_event(i);
  }
  simulation::time_event_init.stop();
}

void process_calculate_xs_events(SharedArray<EventQueueItem>& queue)
{
  simulation::time_event_calculate_xs.start();

  // TODO: If using C++17, we could perform a parallel sort of the queue by
  // particle type, material type, and then energy, in order to improve cache
  // locality and reduce thread divergence on GPU. However, the parallel
  // algorithms typically require linking against an additional library (Intel
  // TBB). Prior to C++17, std::sort is a serial only operation, which in this
  // case makes it too slow to be practical for most test problems.
  //
  // std::sort(std::execution::par_unseq, queue.data(), queue.data() +
  // queue.size());

  int64_t offset = simulation::advance_particle_queue.size();

#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < queue.size(); i++) {
    Particle* p = &simulation::particles[queue[i].idx];
    p->event_calculate_xs();

    // After executing a calculate_xs event, particles will
    // always require an advance event. Therefore, we don't need to use
    // the protected enqueuing function.
    simulation::advance_particle_queue[offset + i] = queue[i];
  }

  simulation::advance_particle_queue.resize(offset + queue.size());

  queue.resize(0);

  simulation::time_event_calculate_xs.stop();
}

void process_advance_particle_events()
{
  simulation::time_event_advance_particle.start();

#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < simulation::advance_particle_queue.size(); i++) {
    int64_t buffer_idx = simulation::advance_particle_queue[i].idx;
    Particle& p = simulation::particles[buffer_idx];
    p.event_advance();
    if (!p.alive())
      continue;
    if (p.collision_distance() > p.boundary().distance()) {
      simulation::surface_crossing_queue.thread_safe_append({p, buffer_idx});
    } else {
      simulation::collision_queue.thread_safe_append({p, buffer_idx});
    }
  }

  simulation::advance_particle_queue.resize(0);

  simulation::time_event_advance_particle.stop();
}

void process_surface_crossing_events()
{
  simulation::time_event_surface_crossing.start();

#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < simulation::surface_crossing_queue.size(); i++) {
    int64_t buffer_idx = simulation::surface_crossing_queue[i].idx;
    Particle& p = simulation::particles[buffer_idx];
    p.event_cross_surface();
    p.event_check_limit_and_revive();
    if (p.alive())
      dispatch_xs_event(buffer_idx);
  }

  simulation::surface_crossing_queue.resize(0);

  simulation::time_event_surface_crossing.stop();
}

void process_collision_events()
{
  simulation::time_event_collision.start();

#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < simulation::collision_queue.size(); i++) {
    int64_t buffer_idx = simulation::collision_queue[i].idx;
    Particle& p = simulation::particles[buffer_idx];
    p.event_collide();
    p.event_check_limit_and_revive();
    if (p.alive())
      dispatch_xs_event(buffer_idx);
  }

  simulation::collision_queue.resize(0);

  simulation::time_event_collision.stop();
}

void process_transport_events()
{
  while (true) {
    int64_t max = std::max({simulation::calculate_fuel_xs_queue.size(),
      simulation::calculate_nonfuel_xs_queue.size(),
      simulation::advance_particle_queue.size(),
      simulation::surface_crossing_queue.size(),
      simulation::collision_queue.size()});

    if (max == 0) {
      break;
    } else if (max == simulation::calculate_fuel_xs_queue.size()) {
      process_calculate_xs_events(simulation::calculate_fuel_xs_queue);
    } else if (max == simulation::calculate_nonfuel_xs_queue.size()) {
      process_calculate_xs_events(simulation::calculate_nonfuel_xs_queue);
    } else if (max == simulation::advance_particle_queue.size()) {
      process_advance_particle_events();
    } else if (max == simulation::surface_crossing_queue.size()) {
      process_surface_crossing_events();
    } else if (max == simulation::collision_queue.size()) {
      process_collision_events();
    }
  }
}

void process_init_secondary_events(int64_t n_particles, int64_t offset,
  const SharedArray<SourceSite>& shared_secondary_bank)
{
  simulation::time_event_init.start();
#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < n_particles; i++) {
    initialize_particle_track(simulation::particles[i], offset + i + 1, true);
    const SourceSite& site = shared_secondary_bank[offset + i];
    simulation::particles[i].event_revive_from_secondary(site);
    if (simulation::particles[i].alive()) {
      dispatch_xs_event(i);
    }
  }
  simulation::time_event_init.stop();
}

//==============================================================================
// Functions for delta tracking
//==============================================================================

void process_delta_init_events(int64_t n_particles, int64_t source_offset)
{
  simulation::time_event_init.start();
#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < n_particles; i++) {
    simulation::particles[i].delta_tracking() = true;
    initialize_particle_track(
      simulation::particles[i], source_offset + i + 1, false);

    simulation::advance_particle_queue[i] = {simulation::particles[i], i};
  }
  simulation::advance_particle_queue.resize(n_particles);
  simulation::time_event_init.stop();
}

void process_delta_calculate_xs_events(SharedArray<EventQueueItem>& queue)
{
  simulation::time_event_calculate_xs.start();

  // TODO: If using C++17, we could perform a parallel sort of the queue by
  // particle type, material type, and then energy, in order to improve cache
  // locality and reduce thread divergence on GPU. However, the parallel
  // algorithms typically require linking against an additional library (Intel
  // TBB). Prior to C++17, std::sort is a serial only operation, which in this
  // case makes it too slow to be practical for most test problems.
  //
  // std::sort(std::execution::par_unseq, queue.data(), queue.data() +
  // queue.size());

  int64_t offset = simulation::collision_queue.size();

  simulation::collision_queue.resize(offset + queue.size());

#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < queue.size(); i++) {
    Particle* p = &simulation::particles[queue[i].idx];
    p->event_calculate_xs();

    // After executing a calculate_xs event in delta tracking, particles will
    // always require a collision event. Therefore, we don't need to use
    // the protected enqueuing function.
    simulation::collision_queue[offset + i] = queue[i];
  }

  queue.resize(0);

  simulation::time_event_calculate_xs.stop();
}

void process_delta_advance_particle_events()
{
  simulation::time_event_advance_particle.start();

#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < simulation::advance_particle_queue.size(); i++) {
    int64_t buffer_idx = simulation::advance_particle_queue[i].idx;
    Particle& p = simulation::particles[buffer_idx];
    p.event_delta_advance();
    if (!p.alive())
      continue;

    if (p.collision_distance() < p.boundary().distance()) {
      // We need to compute cross sections prior to processing a collision.
      dispatch_xs_event(buffer_idx);
    } else {
      simulation::surface_crossing_queue.thread_safe_append({p, buffer_idx});
    }
  }

  simulation::advance_particle_queue.resize(0);

  simulation::time_event_advance_particle.stop();
}

void process_delta_surface_crossing_events()
{
  simulation::time_event_surface_crossing.start();

#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < simulation::surface_crossing_queue.size(); i++) {
    int64_t buffer_idx = simulation::surface_crossing_queue[i].idx;
    Particle& p = simulation::particles[buffer_idx];
    p.event_cross_surface();
    p.event_check_limit_and_revive();
    if (p.alive())
      simulation::advance_particle_queue.thread_safe_append({p, buffer_idx});
  }

  simulation::surface_crossing_queue.resize(0);

  simulation::time_event_surface_crossing.stop();
}

void process_delta_collision_events()
{
  simulation::time_event_collision.start();

#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < simulation::collision_queue.size(); i++) {
    int64_t buffer_idx = simulation::collision_queue[i].idx;
    Particle& p = simulation::particles[buffer_idx];

    if (p.kill_invalid_maj()) {
      continue;
    }

    if (prn(p.current_seed()) < (p.macro_xs().total / p.majorant())) {
      // Real collision, need to process the collision prior to enqueuing an
      // advance event.
      p.event_collide();
    }

    p.event_check_limit_and_revive();
    if (p.alive()) {
      simulation::advance_particle_queue.thread_safe_append({p, buffer_idx});
    }
  }

  simulation::collision_queue.resize(0);

  simulation::time_event_collision.stop();
}

void process_delta_transport_events()
{
  while (true) {
    int64_t max = std::max({simulation::calculate_fuel_xs_queue.size(),
      simulation::calculate_nonfuel_xs_queue.size(),
      simulation::advance_particle_queue.size(),
      simulation::surface_crossing_queue.size(),
      simulation::collision_queue.size()});

    if (max == 0) {
      break;
    } else if (max == simulation::calculate_fuel_xs_queue.size()) {
      process_delta_calculate_xs_events(simulation::calculate_fuel_xs_queue);
    } else if (max == simulation::calculate_nonfuel_xs_queue.size()) {
      process_delta_calculate_xs_events(simulation::calculate_nonfuel_xs_queue);
    } else if (max == simulation::advance_particle_queue.size()) {
      process_delta_advance_particle_events();
    } else if (max == simulation::surface_crossing_queue.size()) {
      process_delta_surface_crossing_events();
    } else if (max == simulation::collision_queue.size()) {
      process_delta_collision_events();
    }
  }
}

void process_delta_init_secondary_events(int64_t n_particles, int64_t offset,
  const SharedArray<SourceSite>& shared_secondary_bank)
{
  simulation::time_event_init.start();
#pragma omp parallel for schedule(runtime)
  for (int64_t i = 0; i < n_particles; i++) {
    simulation::particles[i].delta_tracking() = true;
    initialize_particle_track(simulation::particles[i], offset + i + 1, true);
    const SourceSite& site = shared_secondary_bank[offset + i];
    simulation::particles[i].event_revive_from_secondary(site);

    if (simulation::particles[i].alive()) {
      simulation::particles[i].event_calculate_xs();
      simulation::advance_particle_queue.thread_safe_append(
        {simulation::particles[i], i});
    }
  }
  simulation::time_event_init.stop();
}

} // namespace openmc

1	#include "openmc/event.h"
2
3	#include "openmc/bank.h"
4	#include "openmc/error.h"
5	#include "openmc/material.h"
6	#include "openmc/settings.h"
7	#include "openmc/simulation.h"
8	#include "openmc/timer.h"
9
10	namespace openmc {
11
12	//==============================================================================
13	// Global variables
14	//==============================================================================
15
16	namespace simulation {
17
18	SharedArray<EventQueueItem> calculate_fuel_xs_queue;
19	SharedArray<EventQueueItem> calculate_nonfuel_xs_queue;
20	SharedArray<EventQueueItem> advance_particle_queue;
21	SharedArray<EventQueueItem> surface_crossing_queue;
22	SharedArray<EventQueueItem> collision_queue;
23
24	vector<Particle> particles;
25
26	} // namespace simulation
27
28	//==============================================================================
29	// Non-member functions
30	//==============================================================================
31
32	void init_event_queues(int64_t n_particles)	315 ✔
33	{
34	simulation::calculate_fuel_xs_queue.reserve(n_particles);	315 ✔
35	simulation::calculate_nonfuel_xs_queue.reserve(n_particles);	315 ✔
36	simulation::advance_particle_queue.reserve(n_particles);	315 ✔
37	simulation::surface_crossing_queue.reserve(n_particles);	315 ✔
38	simulation::collision_queue.reserve(n_particles);	315 ✔
39
40	simulation::particles.resize(n_particles);	315 ✔
41	}	315 ✔
42
43	void free_event_queues(void)	×
44	{
45	simulation::calculate_fuel_xs_queue.clear();	×
46	simulation::calculate_nonfuel_xs_queue.clear();	×
47	simulation::advance_particle_queue.clear();	×
48	simulation::surface_crossing_queue.clear();	×
49	simulation::collision_queue.clear();	×
50
51	simulation::particles.clear();	×
52	}	×
53
54	void dispatch_xs_event(int64_t buffer_idx)	267,072,265 ✔
55	{
56	Particle& p = simulation::particles[buffer_idx];	267,072,265 ✔
57	if (p.material() == MATERIAL_VOID \|\|	267,072,265 ✔
58	!model::materials[p.material()]->fissionable()) {	252,806,434 ✔
59	simulation::calculate_nonfuel_xs_queue.thread_safe_append({p, buffer_idx});	78,240,137 ✔
60	} else {
61	simulation::calculate_fuel_xs_queue.thread_safe_append({p, buffer_idx});	188,832,128 ✔
62	}
63	}	267,072,265 ✔
64
65	void process_death_events(int64_t n_particles)	4,306 ✔
66	{
67	simulation::time_event_death.start();	4,306 ✔
68	#pragma omp parallel for schedule(runtime)	4,186 ✔
69	for (int64_t i = 0; i < n_particles; i++) {	100,120 ✔
70	Particle& p = simulation::particles[i];	100,000 ✔
71	p.event_death();	100,000 ✔
72	}
73	simulation::time_event_death.stop();	4,306 ✔
74	}	4,306 ✔
75
76	//==============================================================================
77	// Functions for surface tracking
78	//==============================================================================
79
80	void process_init_events(int64_t n_particles, int64_t source_offset)	3,242 ✔
81	{
82	simulation::time_event_init.start();	3,242 ✔
83	#pragma omp parallel for schedule(runtime)	3,242 ✔
84	for (int64_t i = 0; i < n_particles; i++) {	×
85	initialize_particle_track(
86	simulation::particles[i], source_offset + i + 1, false);
87	dispatch_xs_event(i);
88	}
89	simulation::time_event_init.stop();	3,242 ✔
90	}	3,242 ✔
91
92	void process_calculate_xs_events(SharedArray<EventQueueItem>& queue)	1,399,162 ✔
93	{
94	simulation::time_event_calculate_xs.start();	1,399,162 ✔
95
96	// TODO: If using C++17, we could perform a parallel sort of the queue by
97	// particle type, material type, and then energy, in order to improve cache
98	// locality and reduce thread divergence on GPU. However, the parallel
99	// algorithms typically require linking against an additional library (Intel
100	// TBB). Prior to C++17, std::sort is a serial only operation, which in this
101	// case makes it too slow to be practical for most test problems.
102	//
103	// std::sort(std::execution::par_unseq, queue.data(), queue.data() +
104	// queue.size());
105
106	int64_t offset = simulation::advance_particle_queue.size();	1,399,162 ✔
107
108	#pragma omp parallel for schedule(runtime)	1,399,162 ✔
109	for (int64_t i = 0; i < queue.size(); i++) {	×
110	Particle* p = &simulation::particles[queue[i].idx];
111	p->event_calculate_xs();
112
113	// After executing a calculate_xs event, particles will
114	// always require an advance event. Therefore, we don't need to use
115	// the protected enqueuing function.
116	simulation::advance_particle_queue[offset + i] = queue[i];
117	}
118
119	simulation::advance_particle_queue.resize(offset + queue.size());	1,399,162 ✔
120
121	queue.resize(0);	1,399,162 ✔
122
123	simulation::time_event_calculate_xs.stop();	1,399,162 ✔
124	}	1,399,162 ✔
125
126	void process_advance_particle_events()	1,394,191 ✔
127	{
128	simulation::time_event_advance_particle.start();	1,394,191 ✔
129
130	#pragma omp parallel for schedule(runtime)	1,394,191 ✔
131	for (int64_t i = 0; i < simulation::advance_particle_queue.size(); i++) {	×
132	int64_t buffer_idx = simulation::advance_particle_queue[i].idx;
133	Particle& p = simulation::particles[buffer_idx];
134	p.event_advance();
135	if (!p.alive())	×
136	continue;
137	if (p.collision_distance() > p.boundary().distance()) {	×
138	simulation::surface_crossing_queue.thread_safe_append({p, buffer_idx});
139	} else {
140	simulation::collision_queue.thread_safe_append({p, buffer_idx});
141	}
142	}
143
144	simulation::advance_particle_queue.resize(0);	1,394,191 ✔
145
146	simulation::time_event_advance_particle.stop();	1,394,191 ✔
147	}	1,394,191 ✔
148
149	void process_surface_crossing_events()	267,591 ✔
150	{
151	simulation::time_event_surface_crossing.start();	267,591 ✔
152
153	#pragma omp parallel for schedule(runtime)	267,591 ✔
154	for (int64_t i = 0; i < simulation::surface_crossing_queue.size(); i++) {	×
155	int64_t buffer_idx = simulation::surface_crossing_queue[i].idx;
156	Particle& p = simulation::particles[buffer_idx];
157	p.event_cross_surface();
158	p.event_check_limit_and_revive();
159	if (p.alive())	×
160	dispatch_xs_event(buffer_idx);
161	}
162
163	simulation::surface_crossing_queue.resize(0);	267,591 ✔
164
165	simulation::time_event_surface_crossing.stop();	267,591 ✔
166	}	267,591 ✔
167
168	void process_collision_events()	1,146,934 ✔
169	{
170	simulation::time_event_collision.start();	1,146,934 ✔
171
172	#pragma omp parallel for schedule(runtime)	1,146,934 ✔
173	for (int64_t i = 0; i < simulation::collision_queue.size(); i++) {	×
174	int64_t buffer_idx = simulation::collision_queue[i].idx;
175	Particle& p = simulation::particles[buffer_idx];
176	p.event_collide();
177	p.event_check_limit_and_revive();
178	if (p.alive())	×
179	dispatch_xs_event(buffer_idx);
180	}
181
182	simulation::collision_queue.resize(0);	1,146,934 ✔
183
184	simulation::time_event_collision.stop();	1,146,934 ✔
185	}	1,146,934 ✔
186
187	void process_transport_events()	3,926 ✔
188	{
189	while (true) {	4,211,804 ✔
190	int64_t max = std::max({simulation::calculate_fuel_xs_queue.size(),	4,211,804 ✔
191	simulation::calculate_nonfuel_xs_queue.size(),	4,211,804 ✔
192	simulation::advance_particle_queue.size(),	4,211,804 ✔
193	simulation::surface_crossing_queue.size(),	4,211,804 ✔
194	simulation::collision_queue.size()});	4,211,804 ✔
195
196	if (max == 0) {	4,211,804 ✔
197	break;
198	} else if (max == simulation::calculate_fuel_xs_queue.size()) {	4,207,878 ✔
199	process_calculate_xs_events(simulation::calculate_fuel_xs_queue);	465,856 ✔
200	} else if (max == simulation::calculate_nonfuel_xs_queue.size()) {	3,742,022 ✔
201	process_calculate_xs_events(simulation::calculate_nonfuel_xs_queue);	933,306 ✔
202	} else if (max == simulation::advance_particle_queue.size()) {	2,808,716 ✔
203	process_advance_particle_events();	1,394,191 ✔
204	} else if (max == simulation::surface_crossing_queue.size()) {	1,414,525 ✔
205	process_surface_crossing_events();	267,591 ✔
206	} else if (max == simulation::collision_queue.size()) {	1,146,934 !
207	process_collision_events();	1,146,934 ✔
208	}
209	}
210	}	3,926 ✔
211
212	void process_init_secondary_events(int64_t n_particles, int64_t offset,	684 ✔
213	const SharedArray<SourceSite>& shared_secondary_bank)
214	{
215	simulation::time_event_init.start();	684 ✔
216	#pragma omp parallel for schedule(runtime)	684 ✔
217	for (int64_t i = 0; i < n_particles; i++) {	×
218	initialize_particle_track(simulation::particles[i], offset + i + 1, true);
219	const SourceSite& site = shared_secondary_bank[offset + i];
220	simulation::particles[i].event_revive_from_secondary(site);
221	if (simulation::particles[i].alive()) {	×
222	dispatch_xs_event(i);
223	}
224	}
225	simulation::time_event_init.stop();	684 ✔
226	}	684 ✔
227
228	//==============================================================================
229	// Functions for delta tracking
230	//==============================================================================
231
232	void process_delta_init_events(int64_t n_particles, int64_t source_offset)	380 ✔
233	{
234	simulation::time_event_init.start();	380 ✔
235	#pragma omp parallel for schedule(runtime)	260 ✔
236	for (int64_t i = 0; i < n_particles; i++) {	100,120 ✔
237	simulation::particles[i].delta_tracking() = true;	100,000 ✔
238	initialize_particle_track(	100,000 ✔
239	simulation::particles[i], source_offset + i + 1, false);	100,000 ✔
240
241	simulation::advance_particle_queue[i] = {simulation::particles[i], i};	100,000 ✔
242	}
243	simulation::advance_particle_queue.resize(n_particles);	380 ✔
244	simulation::time_event_init.stop();	380 ✔
245	}	380 ✔
246
247	void process_delta_calculate_xs_events(SharedArray<EventQueueItem>& queue)	739,299 ✔
248	{
249	simulation::time_event_calculate_xs.start();	739,299 ✔
250
251	// TODO: If using C++17, we could perform a parallel sort of the queue by
252	// particle type, material type, and then energy, in order to improve cache
253	// locality and reduce thread divergence on GPU. However, the parallel
254	// algorithms typically require linking against an additional library (Intel
255	// TBB). Prior to C++17, std::sort is a serial only operation, which in this
256	// case makes it too slow to be practical for most test problems.
257	//
258	// std::sort(std::execution::par_unseq, queue.data(), queue.data() +
259	// queue.size());
260
261	int64_t offset = simulation::collision_queue.size();	739,299 ✔
262
263	simulation::collision_queue.resize(offset + queue.size());	739,299 ✔
264
265	#pragma omp parallel for schedule(runtime)	482,075 ✔
266	for (int64_t i = 0; i < queue.size(); i++) {	12,899,654 ✔
267	Particle* p = &simulation::particles[queue[i].idx];	12,642,430 ✔
268	p->event_calculate_xs();	12,642,430 ✔
269
270	// After executing a calculate_xs event in delta tracking, particles will
271	// always require a collision event. Therefore, we don't need to use
272	// the protected enqueuing function.
273	simulation::collision_queue[offset + i] = queue[i];	12,642,430 ✔
274	}
275
276	queue.resize(0);	739,299 ✔
277
278	simulation::time_event_calculate_xs.stop();	739,299 ✔
279	}	739,299 ✔
280
281	void process_delta_advance_particle_events()	737,706 ✔
282	{
283	simulation::time_event_advance_particle.start();	737,706 ✔
284
285	#pragma omp parallel for schedule(runtime)	480,534 ✔
286	for (int64_t i = 0; i < simulation::advance_particle_queue.size(); i++) {	14,804,312 ✔
287	int64_t buffer_idx = simulation::advance_particle_queue[i].idx;	14,547,140 ✔
288	Particle& p = simulation::particles[buffer_idx];	14,547,140 ✔
289	p.event_delta_advance();	14,547,140 ✔
290	if (!p.alive())	14,547,140 !
291	continue;
292
293	if (p.collision_distance() < p.boundary().distance()) {	14,547,140 ✔
294	// We need to compute cross sections prior to processing a collision.
295	dispatch_xs_event(buffer_idx);	12,642,430 ✔
296	} else {
297	simulation::surface_crossing_queue.thread_safe_append({p, buffer_idx});	1,904,710 ✔
298	}
299	}
300
301	simulation::advance_particle_queue.resize(0);	737,706 ✔
302
303	simulation::time_event_advance_particle.stop();	737,706 ✔
304	}	737,706 ✔
305
306	void process_delta_surface_crossing_events()	51,472 ✔
307	{
308	simulation::time_event_surface_crossing.start();	51,472 ✔
309
310	#pragma omp parallel for schedule(runtime)	33,470 ✔
311	for (int64_t i = 0; i < simulation::surface_crossing_queue.size(); i++) {	1,922,712 ✔
312	int64_t buffer_idx = simulation::surface_crossing_queue[i].idx;	1,904,710 ✔
313	Particle& p = simulation::particles[buffer_idx];	1,904,710 ✔
314	p.event_cross_surface();	1,904,710 ✔
315	p.event_check_limit_and_revive();	1,904,710 ✔
316	if (p.alive())	1,904,710 !
317	simulation::advance_particle_queue.thread_safe_append({p, buffer_idx});	1,904,710 ✔
318	}
319
320	simulation::surface_crossing_queue.resize(0);	51,472 ✔
321
322	simulation::time_event_surface_crossing.stop();	51,472 ✔
323	}	51,472 ✔
324
325	void process_delta_collision_events()	694,025 ✔
326	{
327	simulation::time_event_collision.start();	694,025 ✔
328
329	#pragma omp parallel for schedule(runtime)	452,223 ✔
330	for (int64_t i = 0; i < simulation::collision_queue.size(); i++) {	12,884,232 ✔
331	int64_t buffer_idx = simulation::collision_queue[i].idx;	12,642,430 ✔
332	Particle& p = simulation::particles[buffer_idx];	12,642,430 ✔
333
334	if (p.kill_invalid_maj()) {	12,642,430 !
335	continue;
336	}
337
338	if (prn(p.current_seed()) < (p.macro_xs().total / p.majorant())) {	12,642,430 ✔
339	// Real collision, need to process the collision prior to enqueuing an
340	// advance event.
341	p.event_collide();	4,556,135 ✔
342	}
343
344	p.event_check_limit_and_revive();	12,642,430 ✔
345	if (p.alive()) {	12,642,430 ✔
346	simulation::advance_particle_queue.thread_safe_append({p, buffer_idx});	12,542,430 ✔
347	}
348	}
349
350	simulation::collision_queue.resize(0);	694,025 ✔
351
352	simulation::time_event_collision.stop();	694,025 ✔
353	}	694,025 ✔
354
355	void process_delta_transport_events()	380 ✔
356	{
357	while (true) {	2,222,882 ✔
358	int64_t max = std::max({simulation::calculate_fuel_xs_queue.size(),	2,222,882 ✔
359	simulation::calculate_nonfuel_xs_queue.size(),	2,222,882 ✔
360	simulation::advance_particle_queue.size(),	2,222,882 ✔
361	simulation::surface_crossing_queue.size(),	2,222,882 ✔
362	simulation::collision_queue.size()});	2,222,882 ✔
363
364	if (max == 0) {	2,222,882 ✔
365	break;
366	} else if (max == simulation::calculate_fuel_xs_queue.size()) {	2,222,502 ✔
367	process_delta_calculate_xs_events(simulation::calculate_fuel_xs_queue);	122,646 ✔
368	} else if (max == simulation::calculate_nonfuel_xs_queue.size()) {	2,099,856 ✔
369	process_delta_calculate_xs_events(simulation::calculate_nonfuel_xs_queue);	616,653 ✔
370	} else if (max == simulation::advance_particle_queue.size()) {	1,483,203 ✔
371	process_delta_advance_particle_events();	737,706 ✔
372	} else if (max == simulation::surface_crossing_queue.size()) {	745,497 ✔
373	process_delta_surface_crossing_events();	51,472 ✔
374	} else if (max == simulation::collision_queue.size()) {	694,025 !
375	process_delta_collision_events();	694,025 ✔
376	}
377	}
378	}	380 ✔
379
NEW 380	void process_delta_init_secondary_events(int64_t n_particles, int64_t offset,	×
381	const SharedArray<SourceSite>& shared_secondary_bank)
382	{
NEW 383	simulation::time_event_init.start();	×
384	#pragma omp parallel for schedule(runtime)
385	for (int64_t i = 0; i < n_particles; i++) {	×
386	simulation::particles[i].delta_tracking() = true;
387	initialize_particle_track(simulation::particles[i], offset + i + 1, true);
388	const SourceSite& site = shared_secondary_bank[offset + i];
389	simulation::particles[i].event_revive_from_secondary(site);
390
391	if (simulation::particles[i].alive()) {	×
392	simulation::particles[i].event_calculate_xs();
393	simulation::advance_particle_queue.thread_safe_append(
394	{simulation::particles[i], i});
395	}
396	}
NEW 397	simulation::time_event_init.stop();	×
NEW 398	}	×
399
400	} // namespace openmc

openmc-dev / openmc / 31265430262

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