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
|
<%
def gid():
return {
2: 'get_global_id(1)*%d + get_global_id(0)' % memory.size_x,
3: 'get_global_id(2)*%d + get_global_id(1)*%d + get_global_id(0)' % (memory.size_x*memory.size_y, memory.size_x)
}.get(descriptor.d)
def pop_offset(i):
return i * memory.volume
%>
__kernel void equilibrilize(__global __write_only ${float_type}* f_next,
__global __write_only ${float_type}* f_prev)
{
const unsigned int gid = ${gid()};
__global __write_only ${float_type}* preshifted_f_next = f_next + gid;
__global __write_only ${float_type}* preshifted_f_prev = f_prev + gid;
% if pop_eq_src == '':
% for i, w_i in enumerate(descriptor.w):
preshifted_f_next[${pop_offset(i)}] = ${w_i}.f;
preshifted_f_prev[${pop_offset(i)}] = ${w_i}.f;
% endfor
% else:
${pop_eq_src}
% endif
}
<%
def neighbor_offset(c_i):
return {
2: lambda: c_i[1]*memory.size_x + c_i[0],
3: lambda: c_i[2]*memory.size_x*memory.size_y + c_i[1]*memory.size_x + c_i[0]
}.get(descriptor.d)()
%>
__kernel void collide_and_stream(__global __write_only ${float_type}* f_next,
__global __read_only ${float_type}* f_prev,
__global __read_only int* material)
{
const unsigned int gid = ${gid()};
const int m = material[gid];
if ( m == 0 ) {
return;
}
__global __write_only ${float_type}* preshifted_f_next = f_next + gid;
__global __read_only ${float_type}* preshifted_f_prev = f_prev + gid;
% for i, c_i in enumerate(descriptor.c):
const ${float_type} f_curr_${i} = preshifted_f_prev[${pop_offset(i) + neighbor_offset(-c_i)}];
% endfor
% for i, expr in enumerate(moments_subexpr):
const ${float_type} ${expr[0]} = ${ccode(expr[1])};
% endfor
% for i, expr in enumerate(moments_assignment):
${float_type} ${ccode(expr)}
% endfor
${boundary_src}
% for i, expr in enumerate(collide_subexpr):
const ${float_type} ${expr[0]} = ${ccode(expr[1])};
% endfor
% for i, expr in enumerate(collide_assignment):
const ${float_type} ${ccode(expr)}
% endfor
% for i in range(0,descriptor.q):
preshifted_f_next[${pop_offset(i)}] = f_next_${i};
% endfor
}
__kernel void collect_moments(__global __read_only ${float_type}* f,
__global __write_only ${float_type}* moments)
{
const unsigned int gid = ${gid()};
__global __read_only ${float_type}* preshifted_f = f + gid;
% for i in range(0,descriptor.q):
const ${float_type} f_curr_${i} = preshifted_f[${pop_offset(i)}];
% endfor
% for i, expr in enumerate(moments_subexpr):
const ${float_type} ${expr[0]} = ${ccode(expr[1])};
% endfor
% for i, expr in enumerate(moments_assignment):
moments[${pop_offset(i)} + gid] = ${ccode(expr.rhs)};
% endfor
}
__kernel void collect_gl_moments(__global __read_only ${float_type}* f,
__global __write_only float4* moments)
{
const unsigned int gid = ${gid()};
__global __read_only ${float_type}* preshifted_f = f + gid;
% for i in range(0,descriptor.q):
const ${float_type} f_curr_${i} = preshifted_f[${pop_offset(i)}];
% endfor
% for i, expr in enumerate(moments_subexpr):
const ${float_type} ${expr[0]} = ${ccode(expr[1])};
% endfor
float4 data;
% if descriptor.d == 2:
data.x = ${ccode(moments_assignment[0].rhs)};
data.y = ${ccode(moments_assignment[1].rhs)};
data.z = ${ccode(moments_assignment[2].rhs)};
data.w = sqrt(data.y*data.y + data.z*data.z);
% elif descriptor.d == 3:
data.x = ${ccode(moments_assignment[0].rhs)};
data.y = ${ccode(moments_assignment[1].rhs)};
data.z = ${ccode(moments_assignment[2].rhs)};
data.w = ${ccode(moments_assignment[3].rhs)};
% endif
moments[gid] = data;
}
|
