On 24 January 2018 at 15:42, Mike Tancsa <[email protected]> wrote: > b) CPUs manufactured prior to week 25 (some say week 33?) have a > hardware defect that manifests itself as segfaults in heavy compiles. I > was able to confirm this on 1 of the CPUs I had using a Linux setup. It > seems to confirm this, you need to physically look at the CPU for the > manufacturing date :( Not sure how to trigger it on FreeBSD reliably, > but there is a github project I used to verify on Linux > (https://github.com/suaefar/ryzen-test)
According to post #39 in the referenced Linux thread (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1690085): "It was officially fixed for all ryzen manufactured after week 30." I currently have a Ryzen 1600X from week 17/30, which suggests it will have the bug. Unfortunately, I don't have it built into a system yet as I'm waiting for DDR4 prices to become reasonable again before ordering any, so I can't test it. I'm not sure how solid this info is, should I RMA it without even having tested that it has a problem? Alban Hertroys -- If you can't see the forest for the trees, Cut the trees and you'll see there is no forest. _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
