Recursive Fibonacci Benchmark running on RISC-V

Languages: Assembly, C, C++, Go, Rust, Java, NodeJS, Ruby, Python3, Perl

The code performs a recursive fibonacci to the 42th position with the result of 267,914,296.

Fibonacci can be written many different ways. The goal of this project is to compare how each language handles the exact same code.

Here is the Ruby version:

def fib(n)
  return n if n <= 1
  fib(n - 1) + fib(n - 2)
end

puts fib(42)

Here is the Python version:

def fib(n):
  if n <= 1: return n
  return fib(n - 1) + fib(n - 2)

print(fib(42))

Too keep a level playing field, only common "release" flags are used in the compilation step. This allows for compiler optimizations like inlining and constant propogation but removes anything considered dangerous i.e. bypassing out of bounds checks.

All tests are run on:

Mac M1 Pro 32GB (Host)
Docker Desktop 4.16.2
Docker Ubuntu 22.04 RISC-V 64bit Image

How to run them

You can run the tests using Docker:

docker run --platform linux/riscv64 -it drujensen/riscv-ubuntu bash

Then clone the repo and run the tests:

git clone https://github.com/drujensen/riscv-fibonacci.git
cd riscv-fibonacci
./run.sh

Results

Last benchmark was ran on February 12, 2023

Natively compiled, statically typed

Language	Total	Compile	Time, s	Run	Time, s	Ext
C	2.228	gcc -O3 -o fib fib.c	0.821	./fib	1.407	c
C++	2.343	g++ -O3 -o fib fib.cpp	0.927	./fib	1.416	cpp
Go	8.689	go build fib.go	0.889	./fib	7.800	go
Assembly	8.691	gcc -O3 -o fib fib.s	0.230	./fib	8.461	s
Rust	10.766	rustc -C opt-level=3 fib.rs	3.454	./fib	7.312	rs

VM compiled bytecode, statically typed

Language	Total	Compile	Time, s	Run	Time, s	Ext
Java	366.072	javac Fib.java	9.257	java Fib	356.815	java

VM compiled before execution, mixed/dynamically typed

Language	Time, s	Run	Ext
Ruby (jit)	42.278	ruby --jit fib.rb	rbjit
Node	208.353	node fib.js	js

Interpreted, dynamically typed

Language	Time, s	Run	Ext
Ruby	197.762	ruby fib.rb	rb
Python3	651.567	python3 fib.py	py
Perl	762.013	perl fib.pl	pl

Contributing

If you would like to contribute, please fork the repository and use a feature branch. Pull requests are warmly welcome.

To add other languages, please add them to the Dockerfile found here:

https://github.com/drujensen/riscv-ubuntu/blob/main/Dockerfile

License

The code is available as open source under the terms of the MIT License.

brucehoult/riscv-fibonacci