monoruby

Ruby implementation with yet another JIT compiler written in Rust.

Presentation

Presentation slides for RubyKaigi2024 are here.

Features

• Written in Rust from scratch. No dependencies on any other Ruby implementations.
• Fast. Currently, monoruby is comparable to ruby3.3.0+YJIT in the optcarrot benchmark.
• Hand-written original parser.
• Register-based bytecode.
• Bytecode executor (virtual machine) written in x86-64 assembly (yes, we currently support only x86-64!).
• A compact and fast just-in-time compiler. (internally using self-made dynamic assembler monoasm)

Prerequisites

Platform

Currently, only x86-64/linux is supported.

Build

To build monoruby, You'll need installation of Rust. Please be aware that only nightly Rust works for monoruby.

Check here to install Rust, and see here to work with nightly Rust.

How to run

To run ruby program file on monoruby,

> cargo run test.rb

or

> cargo run --release -- test.rb

one liner.

> cargo run -- -e "puts 100"

And also, you can launch REPL.

> cargo run --bin irm

or

> bin/irm

How to install

To install monoruby,

> cargo install --path monoruby

Now, you can play with monoruby,

> monoruby test.rb

and its REPL.

> irm

Benchmark

machine spec

• Architecture: x86_64
• CPU(s): 32
  • Model name: 13th Gen Intel(R) Core(TM) i9-13900HX
  • Thread(s) per core: 2
  • Core(s) per socket: 16
• Caches (sum of all):
  • L1d: 768 KiB (16 instances)
  • L1i: 512 KiB (16 instances)
  • L2: 32 MiB (16 instances)
  • L3: 36 MiB (1 instance)

optcarrot

Several Ruby implementations described below were measured by optcarrot benchmark.

• ruby 3.4.0dev (2024-04-27T08:56:20Z master 9ea77cb351) [x86_64-linux]
• truffleruby 24.0.1, like ruby 3.2.2, Oracle GraalVM JVM [x86_64-linux]
• truffleruby 24.0.1, like ruby 3.2.2, Oracle GraalVM Native [x86_64-linux]
• monoruby: 3e348afd4141c40978342e67ad26d42dc0b8d2a7

optcarrot benchmark

optcarrot fps history (0-3000 frames)

with --opt option (self-rewriting optimization mode)

micro benchmark

• measured by benchmark-driver with '--repeat-count 3' option.
• benchmark codes are in the official repo and plb2.
• measurements are shown in iteration/sec (the higher, the better).
• warm up cycles prior to measurement; 50 cycles for mandelbrot and 200 cycles for nbody. (see benchmark/so_mandelbrot.yml and so_nbody.yml)

	3.4-dev	3.4-dev --yjit	truffleruby+graalvm-24.0.1	truffleruby-24.0.1	monoruby	monoruby --no-jit
app_fib	5.473	41.195	6.988	27.447	39.174	9.912
mandelbrot	0.980	1.983	8.662	10.833	29.979	1.044
nbody	1.736	4.543	80.551	90.610	15.966	1.301
app_aobench	0.049	0.094	0.276	0.346	0.305	0.044
nqueen	0.015	0.015	0.206	0.193	0.150	0.021
sudoku	0.018	0.077	0.207	0.238	0.133	0.020
matmul	0.010	0.023	0.332	0.347	0.062	0.007
bedcov	0.033	0.049	0.222	0.257	0.048	0.033

ratio to CRuby 3.4-dev were shown in the graph below.