# Sorting consumes 17GB ~ 19GB temporary space.
# Specify a path with sufficient storage.

$ perl test.pl | LC_ALL=C sort -T/dev/shm -u | wc -l
$ perl test.pl | LC_ALL=C mcesort -T/dev/shm -j75% -u | wc -l
$ perl test.pl | LC_ALL=C parsort -T/dev/shm --parallel=12 -u | wc -l

CORE::rand  . . . . . . . . . . .  1000000000
PDL->random . . . . . . . . . . .   999999510
Math::Prime::Util::drand  . . . .   999999553
Math::Prime::Util::irand64  . . .  1000000000
Math::Random::random_normal . . .   816337225
Math::Random::random_uniform  . .   799455502
Math::Random::MT::Auto::rand  . .   999999527
$prngMT->rand . . . . . . . . . .   999999527