Fibonacci numbers: LuaJIT vs Terra

Recently I came across Terra Languange which is  a new low-level system programming language that is designed to interoperate seamlessly with the Lua programming language.

I thought of comparing the performance between Lua-Jit and Terra.  We all know Lua-JIT is extremely fast thanks to Mike Pall.

You can find fib.lua source code here as lang-compare  on my github.


>time luajit-2.0.3 fib.lua 25

Running LUA-JIT 2.0.3 test
real 0m0.009s
user 0m0.002s
sys 0m0.006s

Running fib.lua with Terra :
>time terra  fib.lua 25

Running Terra test
real 0m0.016s
user 0m0.005s
sys 0m0.010s

Here LuaJIT is 77% faster than Terra for the same fib.lua file.


>time luajit-2.0.3 fib.lua 50
Running LUA-JIT test
LANGUAGE LUA: 12586269025
real 3m8.326s
user 3m8.157s
sys 0m0.045s

>time terra  fib.lua 50
Running Terra test
LANGUAGE LUA: 12586269025
real 2m46.895s
user 2m46.734s
sys 0m0.043s

Here LuaJit is 56% slower than terra.   I ran the same tests multiple times and the results are consistently same where terra is out performing luajit by ~45% when ran for longer duration.

1 comment:

Anonymous said...

0m0.009s is too short execution time to be trusted as a benchmark. My guess is that Terra has some initial overhead that makes it appear slower only because the test run is so extremely short.