sort.cu

#include <thrust/host_vector.h>
#include <thrust/device_vector.h>
#include <thrust/generate.h>
#include <thrust/sort.h>
#include <thrust/copy.h>
#include <iostream>
#include <algorithm>
#include <ctime>
#include <cstdlib>

int main(void)
{
	using namespace std;

	vector<int> vec(32 << 18);

	//// generate random numbers serially
	std::generate(vec.begin(), vec.end(), rand);

	//// transfer data to the device
	thrust::device_vector<int> d_vec = vec;
	clock_t begin, end;

	begin = clock();
	//// sort data on the device (846M keys per second on GeForce GTX 480)
	thrust::sort(d_vec.begin(), d_vec.end());
	end = clock();
	cout << end - begin << endl;

	begin = clock();
	std::sort(vec.begin(), vec.end());
	end = clock();
	cout << end - begin << endl;

	return 0;
}