A turing machine emulator written in nim.
nim c --d:release tm.nim
./tm <descriptor filename> <input filename>
time ./tm machines/5busyBeaver inputs/blank
tape: 1_11 ...
length: 6145
head moves: 11798826
Input was accepted
real 0m1.650s
user 0m1.650s
sys 0m0.000s
As you can see it takes less than 2 seconds to execute the five state busy beaver.