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# api\_omp\_sph
Last update: 16.07.2025
1// (C) 2024 ANSYS, Inc. Unauthorized use, distribution, or duplication is prohibited.
2\#pragma once
3
4// Includes ---------------------------------------------------------------------------------------
5\#include <rocky20/api/rocky\_api.h>
6
7\#include <rocky20/api/sph/api\_device\_sph.hpp>
8\#include <rocky20/device/omp\_backend.hpp>
9
10namespace rocky::omp {
11
12// Dispatchers ------------------------------------------------------------------------------------
13template <typename Operator = device::DefaultOperator<OMPBackend>, typename Functor>
14inline void dispatch_sph_elements_kernel(
15 [IRockyModel](structIRockyModel.xhtml)& model, Functor& omp_dispatch_particle_f, void* udf_data)
16{
17 SPHModel* sph_model = &(*model._impl->sph_model);
18 SPHDeviceModel* sph_device = model._impl->sph_model->get_device_data(0);
19 SDeviceModel* device_data = model.get_device_data(0);
20
21 if (sph_model->gen_sph.nprt_active <= 0)
22 return;
23
24\#ifndef GPU\_KERNEL\_COMPILING\_STAGE
25 #pragma omp parallel num\_threads(model.get\_number\_of\_processes())
26 {
27 device::launch_sph_particles_function<OMPBackend, Operator>(
28 device_data, sph_device, model.[get\_current\_time](structIRockyModel.xhtml#a93ef35ae1eb9cf50ca77ab2070a769ab)(), omp_dispatch_particle_f, udf_data);
29 }
30\#endif
31}
32
33template <typename Operator = device::DefaultElementsOperator<OMPBackend>, typename Functor>
34inline void dispatch_sph_interactions_elements_kernel(
35 [IRockyModel](structIRockyModel.xhtml)& model,
36 Functor& sph_particle_interaction_f,
37 void* udf_data,
38 IterationType it_type = itAll)
39{
40 cuda_host& solver_model = *model._impl;
41 SPHModel* sph_model = &(*model._impl->sph_model);
42 float current_time = model.[get\_current\_time](structIRockyModel.xhtml#a93ef35ae1eb9cf50ca77ab2070a769ab)();
43 if (sph_model->gen_sph.nprt_active <= 0)
44 return;
45
46\#ifndef GPU\_KERNEL\_COMPILING\_STAGE
47 #pragma omp parallel num\_threads(model.get\_number\_of\_processes())
48 {
49 // SPH -> SPH
50 if (sph_model->gen_sph.use_particles_neighbors_list)
51 {
52 if (solver_model.gen.periodic_domain.enabled())
53 {
54 SPHExplicitHandler<OMPBackend, true> handler { solver_model.GetDeviceData(0),
55 sph_model->get_device_data(0),
56 current_time,
57 it_type };
58 device::launch_sph_interactions_particles<
59 OMPBackend,
60 Operator,
61 decltype(sph_particle_interaction_f)>(
62 solver_model.GetDeviceData(0),
63 sph_model->get_device_data(0),
64 current_time,
65 sph_particle_interaction_f,
66 udf_data,
67 handler);
68 }
69 else
70 {
71 SPHExplicitHandler<OMPBackend, false> handler { solver_model.GetDeviceData(0),
72 sph_model->get_device_data(0),
73 current_time,
74 it_type };
75 device::launch_sph_interactions_particles<
76 OMPBackend,
77 Operator,
78 decltype(sph_particle_interaction_f)>(
79 solver_model.GetDeviceData(0),
80 sph_model->get_device_data(0),
81 current_time,
82 sph_particle_interaction_f,
83 udf_data,
84 handler);
85 }
86 }
87 else
88 {
89 if (solver_model.gen.nprt_active > 0)
90 {
91 if (solver_model.gen.periodic_domain.enabled())
92 {
93 SPHApplyHandler<OMPBackend, true, true> handler { solver_model.GetDeviceData(0),
94 sph_model->get_device_data(0),
95 current_time,
96 it_type };
97 device::launch_sph_interactions_particles<
98 OMPBackend,
99 Operator,
100 decltype(sph_particle_interaction_f)>(
101 solver_model.GetDeviceData(0),
102 sph_model->get_device_data(0),
103 current_time,
104 sph_particle_interaction_f,
105 udf_data,
106 handler);
107 }
108 else
109 {
110 SPHApplyHandler<OMPBackend, true, false> handler {
111 solver_model.GetDeviceData(0),
112 sph_model->get_device_data(0),
113 current_time,
114 it_type
115 };
116 device::launch_sph_interactions_particles<
117 OMPBackend,
118 Operator,
119 decltype(sph_particle_interaction_f)>(
120 solver_model.GetDeviceData(0),
121 sph_model->get_device_data(0),
122 current_time,
123 sph_particle_interaction_f,
124 udf_data,
125 handler);
126 }
127 }
128 else
129 {
130 if (solver_model.gen.periodic_domain.enabled())
131 {
132 SPHApplyHandler<OMPBackend, false, true> handler {
133 solver_model.GetDeviceData(0),
134 sph_model->get_device_data(0),
135 current_time,
136 it_type
137 };
138 device::launch_sph_interactions_particles<
139 OMPBackend,
140 Operator,
141 decltype(sph_particle_interaction_f)>(
142 solver_model.GetDeviceData(0),
143 sph_model->get_device_data(0),
144 current_time,
145 sph_particle_interaction_f,
146 udf_data,
147 handler);
148 }
149 else
150 {
151 SPHApplyHandler<OMPBackend, false, false> handler {
152 solver_model.GetDeviceData(0),
153 sph_model->get_device_data(0),
154 current_time,
155 it_type
156 };
157 device::launch_sph_interactions_particles<
158 OMPBackend,
159 Operator,
160 decltype(sph_particle_interaction_f)>(
161 solver_model.GetDeviceData(0),
162 sph_model->get_device_data(0),
163 current_time,
164 sph_particle_interaction_f,
165 udf_data,
166 handler);
167 }
168 }
169 }
170 }
171\#endif
172}
173
174template <typename Operator = device::DefaultTrianglesOperator<OMPBackend>, typename Functor>
175inline void dispatch_sph_interactions_triangles_kernel(
176 [IRockyModel](structIRockyModel.xhtml)& model, Functor& sph_triangle_interaction_f, void* udf_data)
177{
178 SPHModel* sph_model = &(*model._impl->sph_model);
179 SPHDeviceModel* sph_device = model._impl->sph_model->get_device_data(0);
180 SDeviceModel* device_data = model.get_device_data(0);
181
182 if (sph_model->gen_sph.nprt_active <= 0)
183 return;
184
185\#ifndef GPU\_KERNEL\_COMPILING\_STAGE
186 #pragma omp parallel num\_threads(model.get\_number\_of\_processes())
187 {
188 // SPH -> triangles
189 device::launch_sph_interactions_triangles<OMPBackend, Operator>(
190 device_data,
191 sph_device,
192 model.[get\_current\_time](structIRockyModel.xhtml#a93ef35ae1eb9cf50ca77ab2070a769ab)(),
193 sph_triangle_interaction_f,
194 udf_data);
195 }
196\#endif
197}
198
199} // namespace rocky::omp
[IRockyModel](structIRockyModel.xhtml)
**Definition** rocky_api.h:58
[IRockyModel::get\_current\_time](structIRockyModel.xhtml#a93ef35ae1eb9cf50ca77ab2070a769ab)
double get_current_time() const
**Definition** rocky_api.cpp:143