Sorting 200 000 000 uint64_t

Parallel radix:
Data generation took 0.291 seconds
Sorted 200000000 integers
Total sorting time: 1.105 seconds

std::sort:
Data generation took 0.272 seconds
Total sorting time: 16.393 seconds

radix:
Data generation took 0.291 seconds
Total sorting time: 5.227 seconds