$ 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         2.985 secs
shardDBM to vector     1.381 secs
vector stable sort     0.157 secs
write stdout           0.214 secs
total time             4.739 secs
2956888413 93308427

$ NUM_THREADS=8 NUM_MAPS=8 ./llil4tkh big{1,2,3}.txt | cksum
llil4tkh (fixed string length=12) start
use OpenMP
use boost sort
get properties         2.106 secs
shardDBM to vector     0.683 secs
vector stable sort     0.159 secs
write stdout           0.208 secs
total time             3.157 secs
2956888413 93308427

$ NUM_THREADS=8 NUM_MAPS=32 ./llil4tkh big{1,2,3}.txt | cksum
llil4tkh (fixed string length=12) start
use OpenMP
use boost sort
get properties         1.364 secs
shardDBM to vector     0.639 secs
vector stable sort     0.159 secs
write stdout           0.207 secs
total time             2.372 secs
2956888413 93308427