1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
#include <kel/lbm/sycl/lbm.hpp>
#include <kel/lbm/lbm.hpp>
#include <forstio/remote/filesystem/easy.hpp>
#include <forstio/codec/json/json.hpp>
namespace kel {
namespace lbm {
constexpr uint64_t dim_x = 256u;
constexpr uint64_t dim_y = 32u;
namespace sch {
using namespace saw::schema;
using InfoChunk = Chunk<UInt8, 0u, dim_x, dim_y>;
template<typename T, typename Desc>
using DfChunk = Chunk<FixedArray<T,Desc::Q>, 1u, dim_x, dim_y>;
template<typename T, typename Desc>
using ChunkStruct = Struct<
Member<InfoChunk, "info">,
Member<DfChunk<T,Desc>, "dfs">,
Member<DfChunk<T,Desc>, "dfs_old">
>;
}
template<typename T, typename Desc>
saw::error_or<void> setup_initial_conditions(saw::data<sch::ChunkStruct<T,Desc>>& fields){
auto& info_f = fields.template get<"info">();
// Set everything as walls
iterator<Desc::D>::apply(
[&](auto& index){
info_f.at(index).set(2u);
},
{},
info_f.get_dims(),
{}
);
// Fluid
iterator<Desc::D>::apply(
[&](auto& index){
info_f.at(index).set(1u);
},
{},
info_f.get_dims(),
{{1u,1u}}
);
// Inflow
iterator<Desc::D>::apply(
[&](auto& index){
info_f.at(index).set(3u);
},
{{0u,0u}},
{{1u, dim_y}},
{{0u,1u}}
);
// Outflow
iterator<Desc::D>::apply(
[&](auto& index){
info_f.at(index).set(4u);
},
{{dim_x-1u,0u}},
{{dim_x, dim_y}},
{{0u,1u}}
);
//
auto& df_f = fields.template get<"dfs">();
saw::data<T> rho{1};
saw::data<sch::FixedArray<T,Desc::D>> vel{};
auto eq = equilibrium<T,Desc>(rho,vel);
iterator<Desc::D>::apply(
[&](auto& index){
auto& df = df_f.at(index);
df = eq;
},
{},// 0-index
df_f.get_dims()
);
return saw::make_void();
}
template<typename T, typename Desc>
saw::error_or<void> step(saw::data<sch::ChunkStruct<T,Desc>,encode::Sycl<saw::encode::Native>>& fields, saw::data<sch::UInt64> t_i, device& dev){
auto& q = dev.get_handle();
auto& info_f = fields.template get<"info">();
q.submit([&](acpp::sycl::handler& h){
component<T,Desc,cmpt::BGK,encode::Sycl<saw::encode::Native>> collision{0.6};
h.parallel_for(acpp::sycl::range<Desc::D>{dim_x,dim_y}, [=](acpp::sycl::id<Desc::D> idx){
saw::data<sch::FixedArray<sch::UInt64,Desc::D>> index;
for(uint64_t i = 0u; i < Desc::D; ++i){
index.at({{i}}).set(idx[i]);
}
collision.apply(fields,index,t_i);
});
}).wait();
return saw::make_void();
}
}
}
template<typename T, typename Desc>
saw::error_or<void> lbm_main(int argc, char** argv){
using namespace kel::lbm;
using dfi = df_info<T,Desc>;
auto eo_lbm_dir = output_directory();
if(eo_lbm_dir.is_error()){
return std::move(eo_lbm_dir.get_error());
}
auto& lbm_dir = eo_lbm_dir.get_value();
auto out_dir = lbm_dir / "poiseulle_particles_2d_gpu";
converter<sch::Float64> conv {
// delta_x
{{1.0}},
// delta_t
{{1.0}}
};
// saw::data<sch::FixedArray<sch::UInt64,Desc::D>> meta{{dim_x,dim_y}};
auto lbm_data_ptr = saw::heap<saw::data<sch::ChunkStruct<T,Desc>>>();
device dev;
auto& sycl_q = dev.get_handle();
sycl_q.wait();
{
auto eov = setup_initial_conditions<T,Desc>(*lbm_data_ptr);
if(eov.is_error()){
return eov;
}
}
{
saw::data<sch::ChunkStruct<T,Desc>, encode::Sycl<saw::encode::Native>> lbm_sycl_data{sycl_q};
sycl_q.wait();
{
auto eov = dev.copy_to_device(*lbm_data_ptr,lbm_sycl_data);
if(eov.is_error()){
return eov;
}
}
sycl_q.wait();
for(saw::data<sch::UInt64> i{0u}; i < saw::data<sch::UInt64>{32ul}; ++i){
auto eov = step<T,Desc>(lbm_sycl_data,i,dev);
if(eov.is_error()){
return eov;
}
}
}
sycl_q.wait();
/*
iterator<Desc::D>::apply(
[&](auto& index){
std::cout<<index.at({0u}).get()<<" "<<index.at({1u}).get()<<" "<<lbm_data.get<"info">().at(index).template cast_to<sch::UInt16>().get()<<"\n";
},
{{0u,0u}},
{{dim_x, dim_y}}
);
*/
sycl_q.wait();
return saw::make_void();
}
using FloatT = kel::lbm::sch::Float32;
int main(int argc, char** argv){
auto eov = lbm_main<FloatT,kel::lbm::sch::D2Q9>(argc, argv);
if(eov.is_error()){
auto& err = eov.get_error();
std::cerr<<"[Error] "<<err.get_category();
auto err_msg = err.get_message();
if(err_msg.size() > 0u){
std::cerr<<" - "<<err_msg;
}
std::cerr<<std::endl;
return err.get_id();
}
return 0;
}
|
