Hugging Face's logo

Spaces:
ma-xu
/
LIVE
Runtime error

App Files Community
2
LIVE
File size: 4,129 Bytes 
be11144
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
 
#include <unittest/unittest.h>
#include <thrust/extrema.h>


template<typename ExecutionPolicy, typename Iterator1, typename Iterator2>
__global__
void minmax_element_kernel(ExecutionPolicy exec, Iterator1 first, Iterator1 last, Iterator2 result)
{
  *result = thrust::minmax_element(exec, first, last);
}


template<typename ExecutionPolicy, typename Iterator1, typename Iterator2, typename BinaryPredicate>
__global__
void minmax_element_kernel(ExecutionPolicy exec, Iterator1 first, Iterator1 last, BinaryPredicate pred, Iterator2 result)
{
  *result = thrust::minmax_element(exec, first, last, pred);
}


template<typename ExecutionPolicy>
void TestMinMaxElementDevice(ExecutionPolicy exec)
{
  size_t n = 1000;

  thrust::host_vector<int>   h_data = unittest::random_samples<int>(n);
  thrust::device_vector<int> d_data = h_data;
  
  typename thrust::host_vector<int>::iterator   h_min;
  typename thrust::host_vector<int>::iterator   h_max;
  typename thrust::device_vector<int>::iterator d_min;
  typename thrust::device_vector<int>::iterator d_max;

  typedef thrust::pair<
    typename thrust::device_vector<int>::iterator,
    typename thrust::device_vector<int>::iterator
  > pair_type;

  thrust::device_vector<pair_type> d_result(1);
  
  h_min = thrust::minmax_element(h_data.begin(), h_data.end()).first;
  h_max = thrust::minmax_element(h_data.begin(), h_data.end()).second;

  d_min = thrust::minmax_element(d_data.begin(), d_data.end()).first;
  d_max = thrust::minmax_element(d_data.begin(), d_data.end()).second;

  minmax_element_kernel<<<1,1>>>(exec, d_data.begin(), d_data.end(), d_result.begin());
  {
    cudaError_t const err = cudaDeviceSynchronize();
    ASSERT_EQUAL(cudaSuccess, err);
  }

  d_min = ((pair_type)d_result[0]).first;
  d_max = ((pair_type)d_result[0]).second;
  
  ASSERT_EQUAL(h_min - h_data.begin(), d_min - d_data.begin());
  ASSERT_EQUAL(h_max - h_data.begin(), d_max - d_data.begin());
  
  h_max = thrust::minmax_element(h_data.begin(), h_data.end(), thrust::greater<int>()).first;
  h_min = thrust::minmax_element(h_data.begin(), h_data.end(), thrust::greater<int>()).second;

  minmax_element_kernel<<<1,1>>>(exec, d_data.begin(), d_data.end(), thrust::greater<int>(), d_result.begin());
  {
    cudaError_t const err = cudaDeviceSynchronize();
    ASSERT_EQUAL(cudaSuccess, err);
  }

  d_max = ((pair_type)d_result[0]).first;
  d_min = ((pair_type)d_result[0]).second;
  
  ASSERT_EQUAL(h_min - h_data.begin(), d_min - d_data.begin());
  ASSERT_EQUAL(h_max - h_data.begin(), d_max - d_data.begin());
}


void TestMinMaxElementDeviceSeq()
{
  TestMinMaxElementDevice(thrust::seq);
}
DECLARE_UNITTEST(TestMinMaxElementDeviceSeq);


void TestMinMaxElementDeviceDevice()
{
  TestMinMaxElementDevice(thrust::device);
}
DECLARE_UNITTEST(TestMinMaxElementDeviceDevice);


void TestMinMaxElementCudaStreams()
{
  typedef thrust::device_vector<int> Vector;

  Vector data(6);
  data[0] = 3;
  data[1] = 5;
  data[2] = 1;
  data[3] = 2;
  data[4] = 5;
  data[5] = 1;

  cudaStream_t s;
  cudaStreamCreate(&s);

  ASSERT_EQUAL( *thrust::minmax_element(thrust::cuda::par.on(s), data.begin(), data.end()).first,  1);
  ASSERT_EQUAL( *thrust::minmax_element(thrust::cuda::par.on(s), data.begin(), data.end()).second, 5);
  ASSERT_EQUAL(  thrust::minmax_element(thrust::cuda::par.on(s), data.begin(), data.end()).first  - data.begin(), 2);
  ASSERT_EQUAL(  thrust::minmax_element(thrust::cuda::par.on(s), data.begin(), data.end()).second - data.begin(), 1);

  cudaStreamDestroy(s);
}
DECLARE_UNITTEST(TestMinMaxElementCudaStreams);

void TestMinMaxElementDevicePointer()
{
  typedef thrust::device_vector<int> Vector;
  typedef Vector::value_type T;

  Vector data(6);
  data[0] = 3;
  data[1] = 5;
  data[2] = 1;
  data[3] = 2;
  data[4] = 5;
  data[5] = 1;

  T* raw_ptr = thrust::raw_pointer_cast(data.data());
  size_t n = data.size();
  ASSERT_EQUAL( thrust::minmax_element(thrust::device, raw_ptr, raw_ptr+n).first - raw_ptr,  2);
  ASSERT_EQUAL( thrust::minmax_element(thrust::device, raw_ptr, raw_ptr+n).second - raw_ptr, 1);
}
DECLARE_UNITTEST(TestMinMaxElementDevicePointer);