$ NUM_THREADS=8 NUM_MAPS=4 ./llil4tkh big{1,2,3}.txt | cksum
llil4tkh (fixed string length=12) start
use OpenMP
use boost sort
get properties         2.978 secs
shardDBM to vector     5.848 secs
vector stable sort     0.157 secs
write stdout           0.213 secs
total time             9.197 secs
2956888413 93308427