推力库-如何编写包装器？

Question

I have a VS2010 project written in C++ and want to use the thrust::sort functions. My data is currently in a POD (Plain Old Date) struct. The thrust::sort routines require a host and device vector container to work. What's the easiest way to interface my POD data for use by thrust::sort?

Thanks, Dave

Answer 1

The very first page of the Thrust user guide gives an example to do exactly that:

thrust::host_vector<int> hv = populate();        // make data on host

thrust::device_vector<int> dv(hv.begin(), hv.end()); // copy to device

thrust::sort(dv.begin(), dv.end());              // sort on device

thrust::copy(dv.begin(), dv.end(), hv.begin());  // copy back

Instead of int you can use your own POD structure, and you can pass a comparator to the sort algorithm.