Discontinuation of the project

The pmemkv-ruby library will no longer be maintained by Intel.

  • Intel has ceased development and contributions including, but not limited to, maintenance, bug fixes, new releases, or updates, to this project.
  • Intel no longer accepts patches to this project.
  • If you have an ongoing need to use this project, are interested in independently developing it, or would like to maintain patches for the open source software community, please create your own fork of this project.
  • You will find more information here.


Ruby bindings for pmemkv.

The current API is simplified and not functionally equal to its native C/C++ counterpart. In the future existing API may be extended in idiomatic way without preserving backward compatibility.

Current code can be accessed on github page.

All known issues and limitations are logged as GitHub issues.


  • Ruby 2.2 or higher
  • PMDK - native persistent memory libraries
  • pmemkv - native key/value library
  • ffi - for native library integration
  • Used only for testing:


Start by installing pmemkv on your system.

Install Bundler:

gem install bundler -v '< 2.0'

Clone the pmemkv-ruby tree:

git clone
cd pmemkv-ruby

Download and install gems:

bundle install


This library includes a set of automated tests that exercise all functionality.

LD_LIBRARY_PATH=path_to_your_libs bundle exec rspec


We are using /dev/shm to emulate persistent memory in example.

Example can be found within pmemkv-ruby repository in examples directory. To execute the example:

PMEM_IS_PMEM_FORCE=1 ruby basic_example.rb

The contents of this web site and the associated GitHub repositories are BSD-licensed open source.