#include <cub/cub.cuh>
void b()
{
printf("b() called\n");
cub::DoubleBuffer<unsigned int> d_keys;
cub::DoubleBuffer<cub::NullType> d_values;
size_t temp_storage_bytes = 0;
cub::DeviceRadixSort::SortPairs(NULL, temp_storage_bytes, d_keys, d_values, 1024);
}