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metadata/news/2025-11-30-flexiblas-migration/2025-11-30-flexiblas-migration.en.txt
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@ -1,14 +1,20 @@
Title: FlexiBLAS migration imminent
Author: Sam James <sam@gentoo.org>
Posted: 2025-11-30
Revision: 1
Revision: 2
News-Item-Format: 2.0
Display-If-Installed: app-eselect/eselect-blas
Display-If-Installed: app-eselect/eselect-cblas
Display-If-Installed: app-eselect/eselect-lapack
Display-If-Installed: sci-libs/blis
Display-If-Installed: sci-libs/flexiblas
Display-If-Installed: sci-libs/lapack
Display-If-Installed: sci-libs/mkl
Display-If-Installed: sci-libs/openblas
Display-If-Installed: virtual/blas
Display-If-Installed: virtual/cblas
Display-If-Installed: virtual/lapack
Display-If-Installed: virtual/lapacke
Gentoo is adopting FlexiBLAS (sci-libs/flexiblas) [0][1] as the primary way of
switching BLAS implementations at runtime.
@ -17,9 +23,6 @@ The previous eselect-based 'eselect-blas', 'eselect-cblas', and 'eselect-lapack'
approach will be phased out in favor of this because of various reliability
problems we hit.
FlexiBLAS allows both system-wide and per-user configuration and supersedes
the functionality from the old setup.
The defaults in profiles will change shortly for stable users. For ~arch
users, the default was changed a little while ago.
@ -45,9 +48,11 @@ Then complete a world upgrade and depclean:
Using flexiblas
---------------
Most users do not need to worry about this, but if you need to change
the BLAS implementation at runtime, please consult the flexiblas(1) man
page.
Most users do not need to worry about this and the defaults will be fine.
For users that want to, FlexiBLAS allows both system-wide and per-user
configuration and supersedes the functionality from the old setup. Please
refer to the flexiblas(1) man page for details.
[0] https://public-inbox.gentoo.org/gentoo-dev/db65740b619e7b2413ac2b4b06f94db960f3e46e.camel@gentoo.org/
[1] https://bugs.gentoo.org/963034