$ ./llil4map_buf2 long* long* long* | cksum
llil4map start
use OpenMP
use boost sort
get properties          7.322 secs
map to vector           0.763 secs
vector stable sort      6.558 secs
write stdout            1.893 secs
total time             16.538 secs
    count lines      970195200
    count unique     295755152
29612263 5038456270