1 #include <thrust/host_vector.h> 2 #include <thrust/device_vector.h> 3 #include <thrust/generate.h> 4 #include <thrust/reduce.h> 5 #include <thrust/functional.h> 6 #include <thrust/random.h> 7 my_rand(void)8int my_rand(void) 9 { 10 static thrust::default_random_engine rng; 11 static thrust::uniform_int_distribution<int> dist(0, 9999); 12 return dist(rng); 13 } 14 main(void)15int main(void) 16 { 17 // generate random data on the host 18 thrust::host_vector<int> h_vec(100); 19 thrust::generate(h_vec.begin(), h_vec.end(), my_rand); 20 21 // transfer to device and compute sum 22 thrust::device_vector<int> d_vec = h_vec; 23 24 // initial value of the reduction 25 int init = 0; 26 27 // binary operation used to reduce values 28 thrust::plus<int> binary_op; 29 30 // compute sum on the device 31 int sum = thrust::reduce(d_vec.begin(), d_vec.end(), init, binary_op); 32 33 // print the sum 34 std::cout << "sum is " << sum << std::endl; 35 36 return 0; 37 } 38