Numo::BLIS downloads and builds BLIS during installation and uses that as a background library for Numo::Linalg.

Building LAPACK with BLIS requires cmake and Fortran compiler.

macOS:

$ brew install gcc gfortran cmake

Ubuntu:

$ sudo apt-get install gcc gfortran cmake

Add this line to your application's Gemfile:

gem 'numo-blis'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install numo-blis

Note: Currently, when installing on Apple M1 mac, Numo::BLIS gives generic to the CPU type option of BLIS. It is possible that BLIS is not fully optimized and has low performance.

Numo::BLIS loads Numo::NArray and Numo::Linalg using BLIS as a background library. You can use Numo::NArray and Numo::Linalg just by loading Numo::BLIS.

require 'numo/blis'

x = Numo::DFloat.new(5, 2).rand
c = x.transpose.dot(x)
eig_val, eig_vec = Numo::Linalg.eigh(c)

Moreover, the versions of background libraries are defined by constants.

> Numo::BLIS::BLIS_VERSION
=> "0.8.1"
> Numo::BLIS::LAPACK_VERSION
=> "3.10.0"

Bug reports and pull requests are welcome on GitHub at https://github.com/yoshoku/numo-blis. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the BSD-3-Clause License