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#include <cuda.h>
#include <thrust/device_free.h>
#include <thrust/device_malloc.h>
#include <thrust/device_ptr.h>
#include <thrust/device_vector.h>
int main()
{
size_t N = 10;
// create a device_ptr
thrust::device_ptr<int> dev_ptr = thrust::device_malloc<int>(N);
// extract raw pointer from device_ptr
int* raw_ptr = thrust::raw_pointer_cast(dev_ptr);
// use raw_ptr in CUDA API functions
cudaMemset(raw_ptr, 0, N * sizeof(int));
// free memory
thrust::device_free(dev_ptr);
// we can use the same approach for device_vector
thrust::device_vector<int> d_vec(N);
// note: d_vec.data() returns a device_ptr
raw_ptr = thrust::raw_pointer_cast(d_vec.data());
return 0;
}
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