29424337444

Committed 15 Jul 2026 02:36PM UTC coverage: 81.359% (+0.05%) from 81.305%

Build # 29424337444

Build Type

Pull #3971

github

Committed by

web-flow

Commit Message

Merge 7f497ff04 into 243c24953

Pull Request Pull Request #3971: Delta tracking

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84.81

/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.type() == ParticleType::electron() ||
        p.type() == ParticleType::positron()) {
      // Electrons / positrons collide in place and don't require cross section
      // calculations. Can append to the collision queue directly.
      simulation::collision_queue.thread_safe_append({p, buffer_idx});
      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.type() == ParticleType::electron() ||
        p.type() == ParticleType::positron()) {
      p.event_collide();
    } else {
      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)	294✔
33	{
34	simulation::calculate_fuel_xs_queue.reserve(n_particles);	294✔
35	simulation::calculate_nonfuel_xs_queue.reserve(n_particles);	294✔
36	simulation::advance_particle_queue.reserve(n_particles);	294✔
37	simulation::surface_crossing_queue.reserve(n_particles);	294✔
38	simulation::collision_queue.reserve(n_particles);	294✔
39
40	simulation::particles.resize(n_particles);	294✔
41	}	294✔
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)	265,522,173✔
55	{
56	Particle& p = simulation::particles[buffer_idx];	265,522,173✔
57	if (p.material() == MATERIAL_VOID \|\|	265,522,173✔
58	!model::materials[p.material()]->fissionable()) {	247,841,109✔
59	simulation::calculate_nonfuel_xs_queue.thread_safe_append({p, buffer_idx});	76,663,595✔
60	} else {
61	simulation::calculate_fuel_xs_queue.thread_safe_append({p, buffer_idx});	188,858,578✔
62	}
63	}	265,522,173✔
64
65	void process_death_events(int64_t n_particles)	4,006✔
66	{
67	simulation::time_event_death.start();	4,006✔
68	#pragma omp parallel for schedule(runtime)	3,886✔
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();	4,006✔
74	}	4,006✔
75
76	//==============================================================================
77	// Functions for surface tracking
78	//==============================================================================
79
80	void process_init_events(int64_t n_particles, int64_t source_offset)	3,231✔
81	{
82	simulation::time_event_init.start();	3,231✔
83	#pragma omp parallel for schedule(runtime)	3,231✔
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();	3,231✔
90	}	3,231✔
91
92	void process_calculate_xs_events(SharedArray<EventQueueItem>& queue)	1,280,043✔
93	{
94	simulation::time_event_calculate_xs.start();	1,280,043✔
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();	1,280,043✔
107
108	#pragma omp parallel for schedule(runtime)	1,280,043✔
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());	1,280,043✔
120
121	queue.resize(0);	1,280,043✔
122
123	simulation::time_event_calculate_xs.stop();	1,280,043✔
124	}	1,280,043✔
125
126	void process_advance_particle_events()	1,274,753✔
127	{
128	simulation::time_event_advance_particle.start();	1,274,753✔
129
130	#pragma omp parallel for schedule(runtime)	1,274,753✔
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);	1,274,753✔
145
146	simulation::time_event_advance_particle.stop();	1,274,753✔
147	}	1,274,753✔
148
149	void process_surface_crossing_events()	266,216✔
150	{
151	simulation::time_event_surface_crossing.start();	266,216✔
152
153	#pragma omp parallel for schedule(runtime)	266,216✔
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);	266,216✔
164
165	simulation::time_event_surface_crossing.stop();	266,216✔
166	}	266,216✔
167
168	void process_collision_events()	1,027,396✔
169	{
170	simulation::time_event_collision.start();	1,027,396✔
171
172	#pragma omp parallel for schedule(runtime)	1,027,396✔
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);	1,027,396✔
183
184	simulation::time_event_collision.stop();	1,027,396✔
185	}	1,027,396✔
186
187	void process_transport_events()	3,626✔
188	{
189	while (true) {	3,852,034✔
190	int64_t max = std::max({simulation::calculate_fuel_xs_queue.size(),	3,852,034✔
191	simulation::calculate_nonfuel_xs_queue.size(),	3,852,034✔
192	simulation::advance_particle_queue.size(),	3,852,034✔
193	simulation::surface_crossing_queue.size(),	3,852,034✔
194	simulation::collision_queue.size()});	3,852,034✔
195
196	if (max == 0) {	3,852,034✔
197	break;
198	} else if (max == simulation::calculate_fuel_xs_queue.size()) {	3,848,408✔
199	process_calculate_xs_events(simulation::calculate_fuel_xs_queue);	466,126✔
200	} else if (max == simulation::calculate_nonfuel_xs_queue.size()) {	3,382,282✔
201	process_calculate_xs_events(simulation::calculate_nonfuel_xs_queue);	813,917✔
202	} else if (max == simulation::advance_particle_queue.size()) {	2,568,365✔
203	process_advance_particle_events();	1,274,753✔
204	} else if (max == simulation::surface_crossing_queue.size()) {	1,293,612✔
205	process_surface_crossing_events();	266,216✔
206	} else if (max == simulation::collision_queue.size()) {	1,027,396!
207	process_collision_events();	1,027,396✔
208	}
209	}
210	}	3,626✔
211
212	void process_init_secondary_events(int64_t n_particles, int64_t offset,	395✔
213	const SharedArray<SourceSite>& shared_secondary_bank)
214	{
215	simulation::time_event_init.start();	395✔
216	#pragma omp parallel for schedule(runtime)	395✔
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();	395✔
226	}	395✔
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)	731,601✔
248	{
249	simulation::time_event_calculate_xs.start();	731,601✔
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();	731,601✔
262
263	simulation::collision_queue.resize(offset + queue.size());	731,601✔
264
265	#pragma omp parallel for schedule(runtime)	477,980✔
266	for (int64_t i = 0; i < queue.size(); i++) {	12,700,291✔
267	Particle* p = &simulation::particles[queue[i].idx];	12,446,670✔
268	p->event_calculate_xs();	12,446,670✔
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];	12,446,670✔
274	}
275
276	queue.resize(0);	731,601✔
277
278	simulation::time_event_calculate_xs.stop();	731,601✔
279	}	731,601✔
280
281	void process_delta_advance_particle_events()	1,219,119✔
282	{
283	simulation::time_event_advance_particle.start();	1,219,119✔
284
285	#pragma omp parallel for schedule(runtime)	790,595✔
286	for (int64_t i = 0; i < simulation::advance_particle_queue.size(); i++) {	37,871,744✔
287	int64_t buffer_idx = simulation::advance_particle_queue[i].idx;	37,443,220✔
288	Particle& p = simulation::particles[buffer_idx];	37,443,220✔
289	p.event_delta_advance();	37,443,220✔
290	if (!p.alive())	37,443,220!
291	continue;
292
293	if (p.type() == ParticleType::electron() \|\|	37,443,220✔
294	p.type() == ParticleType::positron()) {	14,367,210✔
295	// Electrons / positrons collide in place and don't require cross section
296	// calculations. Can append to the collision queue directly.
297	simulation::collision_queue.thread_safe_append({p, buffer_idx});	23,097,055✔
298	continue;	23,097,055✔
299	}
300
301	if (p.collision_distance() < p.boundary().distance()) {	14,346,165✔
302	// We need to compute cross sections prior to processing a collision.
303	dispatch_xs_event(buffer_idx);	12,446,670✔
304	} else {
305	simulation::surface_crossing_queue.thread_safe_append({p, buffer_idx});	1,899,495✔
306	}
307	}
308
309	simulation::advance_particle_queue.resize(0);	1,219,119✔
310
311	simulation::time_event_advance_particle.stop();	1,219,119✔
312	}	1,219,119✔
313
314	void process_delta_surface_crossing_events()	55,819✔
315	{
316	simulation::time_event_surface_crossing.start();	55,819✔
317
318	#pragma omp parallel for schedule(runtime)	36,209✔
319	for (int64_t i = 0; i < simulation::surface_crossing_queue.size(); i++) {	1,919,105✔
320	int64_t buffer_idx = simulation::surface_crossing_queue[i].idx;	1,899,495✔
321	Particle& p = simulation::particles[buffer_idx];	1,899,495✔
322	p.event_cross_surface();	1,899,495✔
323	p.event_check_limit_and_revive();	1,899,495✔
324	if (p.alive())	1,899,495!
325	simulation::advance_particle_queue.thread_safe_append({p, buffer_idx});	1,899,495✔
326	}
327
328	simulation::surface_crossing_queue.resize(0);	55,819✔
329
330	simulation::time_event_surface_crossing.stop();	55,819✔
331	}	55,819✔
332
333	void process_delta_collision_events()	1,167,579✔
334	{
335	simulation::time_event_collision.start();	1,167,579✔
336
337	#pragma omp parallel for schedule(runtime)	757,361✔
338	for (int64_t i = 0; i < simulation::collision_queue.size(); i++) {	35,953,943✔
339	int64_t buffer_idx = simulation::collision_queue[i].idx;	35,543,725✔
340	Particle& p = simulation::particles[buffer_idx];	35,543,725✔
341
342	if (p.type() == ParticleType::electron() \|\|	35,543,725✔
343	p.type() == ParticleType::positron()) {	12,467,715✔
344	p.event_collide();	23,097,055✔
345	} else {
346	if (p.kill_invalid_maj()) {	12,446,670!
347	continue;
348	}
349
350	if (prn(p.current_seed()) < (p.macro_xs().total / p.majorant())) {	12,446,670✔
351	// Real collision, need to process the collision prior to enqueuing an
352	// advance event.
353	p.event_collide();	4,560,995✔
354	}
355	}
356
357	p.event_check_limit_and_revive();	35,543,725✔
358	if (p.alive()) {	35,543,725✔
359	simulation::advance_particle_queue.thread_safe_append({p, buffer_idx});	35,443,725✔
360	}
361	}
362
363	simulation::collision_queue.resize(0);	1,167,579✔
364
365	simulation::time_event_collision.stop();	1,167,579✔
366	}	1,167,579✔
367
368	void process_delta_transport_events()	380✔
369	{
370	while (true) {	3,174,498✔
371	int64_t max = std::max({simulation::calculate_fuel_xs_queue.size(),	3,174,498✔
372	simulation::calculate_nonfuel_xs_queue.size(),	3,174,498✔
373	simulation::advance_particle_queue.size(),	3,174,498✔
374	simulation::surface_crossing_queue.size(),	3,174,498✔
375	simulation::collision_queue.size()});	3,174,498✔
376
377	if (max == 0) {	3,174,498✔
378	break;
379	} else if (max == simulation::calculate_fuel_xs_queue.size()) {	3,174,118✔
380	process_delta_calculate_xs_events(simulation::calculate_fuel_xs_queue);	139,119✔
381	} else if (max == simulation::calculate_nonfuel_xs_queue.size()) {	3,034,999✔
382	process_delta_calculate_xs_events(simulation::calculate_nonfuel_xs_queue);	592,482✔
383	} else if (max == simulation::advance_particle_queue.size()) {	2,442,517✔
384	process_delta_advance_particle_events();	1,219,119✔
385	} else if (max == simulation::surface_crossing_queue.size()) {	1,223,398✔
386	process_delta_surface_crossing_events();	55,819✔
387	} else if (max == simulation::collision_queue.size()) {	1,167,579!
388	process_delta_collision_events();	1,167,579✔
389	}
390	}
391	}	380✔
392
NEW 393	void process_delta_init_secondary_events(int64_t n_particles, int64_t offset,	×
394	const SharedArray<SourceSite>& shared_secondary_bank)
395	{
NEW 396	simulation::time_event_init.start();	×
397	#pragma omp parallel for schedule(runtime)
398	for (int64_t i = 0; i < n_particles; i++) {	×
399	simulation::particles[i].delta_tracking() = true;
400	initialize_particle_track(simulation::particles[i], offset + i + 1, true);
401	const SourceSite& site = shared_secondary_bank[offset + i];
402	simulation::particles[i].event_revive_from_secondary(site);
403
404	if (simulation::particles[i].alive()) {	×
405	simulation::particles[i].event_calculate_xs();
406	simulation::advance_particle_queue.thread_safe_append(
407	{simulation::particles[i], i});
408	}
409	}
NEW 410	simulation::time_event_init.stop();	×
NEW 411	}	×
412
413	} // namespace openmc

openmc-dev / openmc / 29424337444

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