$ ./llil4map big{1,2,3}.txt | cksum
llil4map (fixed string length=12) start
use OpenMP
use boost sort
get properties         0.101 secs
map to vector          0.052 secs
vector stable sort     0.115 secs
write stdout           0.029 secs
total time             0.298 secs
    count lines     10545600
    count unique    10367603
2956888413 93308427

$ ./llil4vec big{1,2,3}.txt | cksum
llil4vec (fixed string length=12) start
use OpenMP
use boost sort
get properties         0.203 secs
sort properties        0.088 secs
vector reduce          0.024 secs
vector stable sort     0.103 secs
write stdout           0.029 secs
total time             0.449 secs
    count lines     10545600
    count unique    10367603
2956888413 93308427