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Using TruffleRuby with GraalVM

GraalVM is the platform on which TruffleRuby runs.

Dependencies

TruffleRuby is actively tested on these systems:

  • Oracle Linux 7
  • Ubuntu 16.04 LTS
  • Fedora 25
  • macOS 10.13

You need to install LLVM to build and run C extensions and zlib and libssl for openssl. You may also need to set up a UTF-8 locale.

Community Edition and Enterprise Edition

GraalVM is available in a Community Edition, which is open-source, and an Enterprise Edition which has better performance and scalability.

The Community Edition is available only for Linux, but is free for production use. The Enterprise Edition is available for both macOS and Linux, and is free for evaluation but not production use. Commercial support is available for the Enterprise Edition.

To get the best performance you want to use the Enterprise Edition.

Installing the base image

GraalVM starts with a base image which provides the platform for high-performance scalability.

The Community Edition base image can be installed from GitHub, under an open source licence.

https://github.com/oracle/graal/releases

The Enterprise Edition base image can only be installed from the Oracle Technology Network using the OTN licence.

http://www.oracle.com/technetwork/oracle-labs/program-languages/

Whichever edition you get you will get a tarball which you can extract. There will be a bin directory (Contents/Home/bin on macOS) which you can add to your $PATH if you want to.

Installing Ruby and other languages

After installing GraalVM you then need to install the Ruby language into it. This is done using the gu command. The Ruby package is the same for both editions of GraalVM and comes from GitHub.

$ gu install -c org.graalvm.ruby

Or download manually from https://github.com/oracle/truffleruby/releases.

If you install Ruby into the Enterprise Edition of GraalVM, you should then rebuild the Ruby executable images using the runtime from the Enterprise Edition. The version of the Ruby executable images you install by default uses the Community Edition runtime until you rebuild.

To get the best performance you want to rebuild the images.

Rebuilding the executable images can take a few minutes and you should have about 8 GB of RAM available.

$ graalvm/jre/lib/svm/bin/rebuild-images ruby

Using a Ruby package manager

Inside the GraalVM is a jre/languages/ruby directory which has the usual structure of a Ruby implementation. It is recommended to add this directory to a Ruby manager, see configuring Ruby managers for more information.