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
|
#include <thrust/execution_policy.h>
#include <thrust/reverse.h>
#include <unittest/unittest.h>
#ifdef THRUST_TEST_DEVICE_SIDE
template <typename ExecutionPolicy, typename Iterator>
__global__ void reverse_kernel(ExecutionPolicy exec, Iterator first, Iterator last)
{
thrust::reverse(exec, first, last);
}
template <typename ExecutionPolicy>
void TestReverseDevice(ExecutionPolicy exec)
{
size_t n = 1000;
thrust::host_vector<int> h_data = unittest::random_integers<int>(n);
thrust::device_vector<int> d_data = h_data;
thrust::reverse(h_data.begin(), h_data.end());
reverse_kernel<<<1, 1>>>(exec, raw_pointer_cast(d_data.data()), raw_pointer_cast(d_data.data() + d_data.size()));
cudaError_t const err = cudaDeviceSynchronize();
ASSERT_EQUAL(cudaSuccess, err);
ASSERT_EQUAL(h_data, d_data);
};
void TestReverseDeviceSeq()
{
TestReverseDevice(thrust::seq);
}
DECLARE_UNITTEST(TestReverseDeviceSeq);
void TestReverseDeviceDevice()
{
TestReverseDevice(thrust::device);
}
DECLARE_UNITTEST(TestReverseDeviceDevice);
template <typename ExecutionPolicy, typename Iterator1, typename Iterator2>
__global__ void reverse_copy_kernel(ExecutionPolicy exec, Iterator1 first, Iterator1 last, Iterator2 result)
{
thrust::reverse_copy(exec, first, last, result);
}
template <typename ExecutionPolicy>
void TestReverseCopyDevice(ExecutionPolicy exec)
{
size_t n = 1000;
thrust::host_vector<int> h_data = unittest::random_integers<int>(n);
thrust::device_vector<int> d_data = h_data;
thrust::host_vector<int> h_result(n);
thrust::device_vector<int> d_result(n);
thrust::reverse_copy(h_data.begin(), h_data.end(), h_result.begin());
reverse_copy_kernel<<<1, 1>>>(exec, d_data.begin(), d_data.end(), d_result.begin());
cudaError_t const err = cudaDeviceSynchronize();
ASSERT_EQUAL(cudaSuccess, err);
ASSERT_EQUAL(h_result, d_result);
};
void TestReverseCopyDeviceSeq()
{
TestReverseCopyDevice(thrust::seq);
}
DECLARE_UNITTEST(TestReverseCopyDeviceSeq);
void TestReverseCopyDeviceDevice()
{
TestReverseCopyDevice(thrust::device);
}
DECLARE_UNITTEST(TestReverseCopyDeviceDevice);
#endif
void TestReverseCudaStreams()
{
typedef thrust::device_vector<int> Vector;
Vector data(5);
data[0] = 1;
data[1] = 2;
data[2] = 3;
data[3] = 4;
data[4] = 5;
cudaStream_t s;
cudaStreamCreate(&s);
thrust::reverse(thrust::cuda::par.on(s), data.begin(), data.end());
cudaStreamSynchronize(s);
Vector ref(5);
ref[0] = 5;
ref[1] = 4;
ref[2] = 3;
ref[3] = 2;
ref[4] = 1;
ASSERT_EQUAL(ref, data);
cudaStreamDestroy(s);
}
DECLARE_UNITTEST(TestReverseCudaStreams);
void TestReverseCopyCudaStreams()
{
typedef thrust::device_vector<int> Vector;
Vector data(5);
data[0] = 1;
data[1] = 2;
data[2] = 3;
data[3] = 4;
data[4] = 5;
Vector result(5);
cudaStream_t s;
cudaStreamCreate(&s);
thrust::reverse_copy(thrust::cuda::par.on(s), data.begin(), data.end(), result.begin());
cudaStreamSynchronize(s);
Vector ref(5);
ref[0] = 5;
ref[1] = 4;
ref[2] = 3;
ref[3] = 2;
ref[4] = 1;
ASSERT_EQUAL(ref, result);
cudaStreamDestroy(s);
}
DECLARE_UNITTEST(TestReverseCopyCudaStreams);
|
