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#include <unittest/unittest.h> | |
#include <thrust/inner_product.h> | |
#include <thrust/execution_policy.h> | |
template<typename ExecutionPolicy, typename Iterator1, typename Iterator2, typename T, typename Iterator3> | |
__global__ | |
void inner_product_kernel(ExecutionPolicy exec, Iterator1 first1, Iterator1 last1, Iterator2 first2, T init, Iterator3 result) | |
{ | |
*result = thrust::inner_product(exec, first1, last1, first2, init); | |
} | |
template<typename ExecutionPolicy> | |
void TestInnerProductDevice(ExecutionPolicy exec) | |
{ | |
size_t n = 1000; | |
thrust::host_vector<int> h_v1 = unittest::random_integers<int>(n); | |
thrust::host_vector<int> h_v2 = unittest::random_integers<int>(n); | |
thrust::device_vector<int> d_v1 = h_v1; | |
thrust::device_vector<int> d_v2 = h_v2; | |
thrust::device_vector<int> result(1); | |
int init = 13; | |
int expected = thrust::inner_product(h_v1.begin(), h_v1.end(), h_v2.begin(), init); | |
inner_product_kernel<<<1,1>>>(exec, d_v1.begin(), d_v1.end(), d_v2.begin(), init, result.begin()); | |
{ | |
cudaError_t const err = cudaDeviceSynchronize(); | |
ASSERT_EQUAL(cudaSuccess, err); | |
} | |
ASSERT_EQUAL(expected, result[0]); | |
} | |
void TestInnerProductDeviceSeq() | |
{ | |
TestInnerProductDevice(thrust::seq); | |
}; | |
DECLARE_UNITTEST(TestInnerProductDeviceSeq); | |
void TestInnerProductDeviceDevice() | |
{ | |
TestInnerProductDevice(thrust::device); | |
}; | |
DECLARE_UNITTEST(TestInnerProductDeviceDevice); | |
void TestInnerProductCudaStreams() | |
{ | |
thrust::device_vector<int> v1(3); | |
thrust::device_vector<int> v2(3); | |
v1[0] = 1; v1[1] = -2; v1[2] = 3; | |
v2[0] = -4; v2[1] = 5; v2[2] = 6; | |
cudaStream_t s; | |
cudaStreamCreate(&s); | |
int init = 3; | |
int result = thrust::inner_product(thrust::cuda::par.on(s), v1.begin(), v1.end(), v2.begin(), init); | |
ASSERT_EQUAL(result, 7); | |
cudaStreamDestroy(s); | |
} | |
DECLARE_UNITTEST(TestInnerProductCudaStreams); | |