On Mon, Jul 22, 2019 at 4:47 PM Stephen Gallagher <sgallagh@xxxxxxxxxx> wrote: > > On Mon, Jul 22, 2019 at 2:52 PM Ben Cotton <bcotton@xxxxxxxxxx> wrote: > > > > https://fedoraproject.org/wiki/Changes/x86-64_micro-architecture_update > > > > == Summary == > > Fedora currently uses the original K8 micro-architecture (without > > 3DNow! and other AMD-specific parts) as the baseline for its > > <code>x86_64</code> architecture. This baseline dates back to 2003 > > and has not been updated since. As a result, performance of Fedora is > > not as good as it could be on current CPUs. > > > > This change to update the micro-architecture level for the > > architecture to something more recent. > > > ... > > > * Other developers: Other developers may have to adjust test suites > > which expect exact floating point results, and correct linking with > > <code>libatomic</code>. They will also have to upgrade their x86-64 > > machines to something that can execute AVX2 instructions. > > > I think it's clear just from the initial replies to this thread that > even the most involved Fedorans (AKA the ones most likely to have > access to newer hardware) would be unable to run a sizeable percentage > of their systems if the minimum requirement became AVX2+ > > With my FESCo hat on, I can't support this action as currently stated. > I think I'd be more inclined to consider it if the Change was proposed > as a new architecture bring-up. Effectively, this would be a whole new > architecture that would just happen to be largely compatible with > x86_64. That is one way. I think there might be others. Depending on exactly what the target usecase is, we might be able to accommodate this under the Fedora project umbrella in a way that doesn't require moving the entire distro immediately here. josh _______________________________________________ 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
