On Wed, Jul 1, 2020 at 8:25 AM Ben Cotton <bcotton@xxxxxxxxxx> wrote: > https://fedoraproject.org/wiki/Changes/FlexiBLAS_as_BLAS/LAPACK_manager > > == Summary == > BLAS/LAPACK packages will be compiled against the FlexiBLAS wrapper > library, which will set OpenBLAS as system-wide default backend, and > at the same time will provide a proper switching mechanism that > currently Fedora lacks. I like this idea. Comments below. > # '''Fedora lacks a system-wide default'''. Due to implementation > differences, it is important that all components of a particular > software stack link to the same BLAS/LAPACK implementation. Although > there have been [[Changes/OpenBLAS_as_default_BLAS|efforts]] to > standardize OpenBLAS as a system-wide default, they are incomplete. > # '''Fedora lacks a proper switching mechanism'''. Different > implementations work differently depending on the workload, but also > depending on whether the consumer of this API implements some kind of > parallelization, for instance. Therefore, users may want to choose a > particular implementation that works best for them at run time. > Mechanisms such as update-alternatives and modules have been discussed > in the past, but were considered improper (the former) or faced > technical issues (the former). I think the latter instance of "the former" should be "the latter". :-) > # Recompilation of all BLAS/LAPACK-dependent packages linking against > FlexiBLAS instead of the current implementation they are using (just > changing a BuildRequires line should be sufficient in most cases, > unless a SPEC has something hardcoded somewhere else). Speaking as maintainer of several packages that use BLAS/LAPACK, I think the effort required may be a bit more than this paragraph suggests, but it is worth doing. Thanks for working on this, Iñaki! -- Jerry James http://www.jamezone.org/ _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
