21240277645

Committed 22 Jan 2026 07:46AM UTC coverage: 80.906% (-1.1%) from 81.998%

Build # 21240277645

Build Type

Pull #3745

github

Committed by

web-flow

Commit Message

Merge b47b53e16 into c5df2bf62

Pull Request Pull Request #3745: Add n_elements to the MeshBase protocol and deprecate num_mesh_cells

Run Details

16262 of 22513 branches covered (72.23%)

Branch coverage included in aggregate %.

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0.0

/src/event.cpp

#include "openmc/event.h"

#include "openmc/material.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_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_history(simulation::particles[i], source_offset + i + 1);
    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_revive_from_secondary();
    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_revive_from_secondary();
    if (p.alive())
      dispatch_xs_event(buffer_idx);
  }

  simulation::collision_queue.resize(0);

  simulation::time_event_collision.stop();
}

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();
}

} // namespace openmc

1	#include "openmc/event.h"
2
3	#include "openmc/material.h"
4	#include "openmc/simulation.h"
5	#include "openmc/timer.h"
6
7	namespace openmc {
8
9	//==============================================================================
10	// Global variables
11	//==============================================================================
12
13	namespace simulation {
14
15	SharedArray<EventQueueItem> calculate_fuel_xs_queue;
16	SharedArray<EventQueueItem> calculate_nonfuel_xs_queue;
17	SharedArray<EventQueueItem> advance_particle_queue;
18	SharedArray<EventQueueItem> surface_crossing_queue;
19	SharedArray<EventQueueItem> collision_queue;
20
21	vector<Particle> particles;
22
23	} // namespace simulation
24
25	//==============================================================================
26	// Non-member functions
27	//==============================================================================
28
UNCOV 29	void init_event_queues(int64_t n_particles)	×
30	{
UNCOV 31	simulation::calculate_fuel_xs_queue.reserve(n_particles);	×
UNCOV 32	simulation::calculate_nonfuel_xs_queue.reserve(n_particles);	×
UNCOV 33	simulation::advance_particle_queue.reserve(n_particles);	×
UNCOV 34	simulation::surface_crossing_queue.reserve(n_particles);	×
UNCOV 35	simulation::collision_queue.reserve(n_particles);	×
36
UNCOV 37	simulation::particles.resize(n_particles);	×
UNCOV 38	}	×
39
40	void free_event_queues(void)	×
41	{
42	simulation::calculate_fuel_xs_queue.clear();	×
43	simulation::calculate_nonfuel_xs_queue.clear();	×
44	simulation::advance_particle_queue.clear();	×
45	simulation::surface_crossing_queue.clear();	×
46	simulation::collision_queue.clear();	×
47
48	simulation::particles.clear();	×
49	}	×
50
UNCOV 51	void dispatch_xs_event(int64_t buffer_idx)	×
52	{
UNCOV 53	Particle& p = simulation::particles[buffer_idx];	×
UNCOV 54	if (p.material() == MATERIAL_VOID \|\|	×
UNCOV 55	!model::materials[p.material()]->fissionable()) {	×
UNCOV 56	simulation::calculate_nonfuel_xs_queue.thread_safe_append({p, buffer_idx});	×
57	} else {
UNCOV 58	simulation::calculate_fuel_xs_queue.thread_safe_append({p, buffer_idx});	×
59	}
UNCOV 60	}	×
61
UNCOV 62	void process_init_events(int64_t n_particles, int64_t source_offset)	×
63	{
UNCOV 64	simulation::time_event_init.start();	×
65	#pragma omp parallel for schedule(runtime)
UNCOV 66	for (int64_t i = 0; i < n_particles; i++) {	×
UNCOV 67	initialize_history(simulation::particles[i], source_offset + i + 1);	×
UNCOV 68	dispatch_xs_event(i);	×
69	}
UNCOV 70	simulation::time_event_init.stop();	×
UNCOV 71	}	×
72
UNCOV 73	void process_calculate_xs_events(SharedArray<EventQueueItem>& queue)	×
74	{
UNCOV 75	simulation::time_event_calculate_xs.start();	×
76
77	// TODO: If using C++17, we could perform a parallel sort of the queue by
78	// particle type, material type, and then energy, in order to improve cache
79	// locality and reduce thread divergence on GPU. However, the parallel
80	// algorithms typically require linking against an additional library (Intel
81	// TBB). Prior to C++17, std::sort is a serial only operation, which in this
82	// case makes it too slow to be practical for most test problems.
83	//
84	// std::sort(std::execution::par_unseq, queue.data(), queue.data() +
85	// queue.size());
86
UNCOV 87	int64_t offset = simulation::advance_particle_queue.size();	×
88
89	#pragma omp parallel for schedule(runtime)
UNCOV 90	for (int64_t i = 0; i < queue.size(); i++) {	×
UNCOV 91	Particle* p = &simulation::particles[queue[i].idx];	×
UNCOV 92	p->event_calculate_xs();	×
93
94	// After executing a calculate_xs event, particles will
95	// always require an advance event. Therefore, we don't need to use
96	// the protected enqueuing function.
UNCOV 97	simulation::advance_particle_queue[offset + i] = queue[i];	×
98	}
99
UNCOV 100	simulation::advance_particle_queue.resize(offset + queue.size());	×
101
UNCOV 102	queue.resize(0);	×
103
UNCOV 104	simulation::time_event_calculate_xs.stop();	×
UNCOV 105	}	×
106
UNCOV 107	void process_advance_particle_events()	×
108	{
UNCOV 109	simulation::time_event_advance_particle.start();	×
110
111	#pragma omp parallel for schedule(runtime)
UNCOV 112	for (int64_t i = 0; i < simulation::advance_particle_queue.size(); i++) {	×
UNCOV 113	int64_t buffer_idx = simulation::advance_particle_queue[i].idx;	×
UNCOV 114	Particle& p = simulation::particles[buffer_idx];	×
UNCOV 115	p.event_advance();	×
UNCOV 116	if (!p.alive())	×
UNCOV 117	continue;	×
UNCOV 118	if (p.collision_distance() > p.boundary().distance()) {	×
UNCOV 119	simulation::surface_crossing_queue.thread_safe_append({p, buffer_idx});	×
120	} else {
UNCOV 121	simulation::collision_queue.thread_safe_append({p, buffer_idx});	×
122	}
123	}
124
UNCOV 125	simulation::advance_particle_queue.resize(0);	×
126
UNCOV 127	simulation::time_event_advance_particle.stop();	×
UNCOV 128	}	×
129
UNCOV 130	void process_surface_crossing_events()	×
131	{
UNCOV 132	simulation::time_event_surface_crossing.start();	×
133
134	#pragma omp parallel for schedule(runtime)
UNCOV 135	for (int64_t i = 0; i < simulation::surface_crossing_queue.size(); i++) {	×
UNCOV 136	int64_t buffer_idx = simulation::surface_crossing_queue[i].idx;	×
UNCOV 137	Particle& p = simulation::particles[buffer_idx];	×
UNCOV 138	p.event_cross_surface();	×
UNCOV 139	p.event_revive_from_secondary();	×
UNCOV 140	if (p.alive())	×
UNCOV 141	dispatch_xs_event(buffer_idx);	×
142	}
143
UNCOV 144	simulation::surface_crossing_queue.resize(0);	×
145
UNCOV 146	simulation::time_event_surface_crossing.stop();	×
UNCOV 147	}	×
148
UNCOV 149	void process_collision_events()	×
150	{
UNCOV 151	simulation::time_event_collision.start();	×
152
153	#pragma omp parallel for schedule(runtime)
UNCOV 154	for (int64_t i = 0; i < simulation::collision_queue.size(); i++) {	×
UNCOV 155	int64_t buffer_idx = simulation::collision_queue[i].idx;	×
UNCOV 156	Particle& p = simulation::particles[buffer_idx];	×
UNCOV 157	p.event_collide();	×
UNCOV 158	p.event_revive_from_secondary();	×
UNCOV 159	if (p.alive())	×
UNCOV 160	dispatch_xs_event(buffer_idx);	×
161	}
162
UNCOV 163	simulation::collision_queue.resize(0);	×
164
UNCOV 165	simulation::time_event_collision.stop();	×
UNCOV 166	}	×
167
UNCOV 168	void process_death_events(int64_t n_particles)	×
169	{
UNCOV 170	simulation::time_event_death.start();	×
171	#pragma omp parallel for schedule(runtime)
UNCOV 172	for (int64_t i = 0; i < n_particles; i++) {	×
UNCOV 173	Particle& p = simulation::particles[i];	×
UNCOV 174	p.event_death();	×
175	}
UNCOV 176	simulation::time_event_death.stop();	×
UNCOV 177	}	×
178
179	} // namespace openmc

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