OpenBLAS and performance

[Pjotr Prins]

The last weeks I have been toying with OpenBlas and tweaking it boosts
performance magnificently over the standard install we do now. A
configuration for Haswell looks like:

  
https://gitlab.com/genenetwork/guix-bioinformatics/blob/master/gn/packages/gemma.scm#L64

It will benefit python-numpy and R users greatly to use
multi-threading (particularly). How do we make a flavour that supports
this.

Or are channels going to solve this for us?

Btw the latest stable release worked fine too:

  
https://gitlab.com/genenetwork/guix-bioinformatics/commit/474524a5a0d57744c1727442b33d8f2889eb0397

Pj.