Just had our biannual maintenance window. All the things are patched. One could disable the performance-killing patches with the "noibrs noibpb nopti" grub options. Cheers.
On Thu 03/08/18 01:55PM EST, Ryan Novosielski wrote: > I have been waiting, specifically, for Prentice Bisbal to try it. :-P > > I actually have not checked to see whether any other upgrades I’ve applied > have handled these vulnerabilities (I’d assume RedHat would have patched > their distribution). FWIW, however, I did receive a report that one of our > newer images seemed slower. Haven’t gotten a chance to fully investigate > those reports — could be any number of other things. > > -- > ____ > || \\UTGERS, |---------------------------*O*--------------------------- > ||_// the State | Ryan Novosielski - > novos...@rutgers.edu<mailto:novos...@rutgers.edu> > || \\ University | Sr. Technologist - 973/972.0922 (2x0922) ~*~ RBHS Campus > || \\ of NJ | Office of Advanced Research Computing - MSB C630, Newark > `' > > On Mar 8, 2018, at 13:13, Alex Chekholko via Beowulf > <beowulf@beowulf.org<mailto:beowulf@beowulf.org>> wrote: > > As an experienced and cynical HPC admin working with trusted users... I have > not installed any kind of firmware or kernel updates. I'll wait for you to > go first :) > > On Thu, Mar 8, 2018 at 10:10 AM, Prentice Bisbal > <pbis...@pppl.gov<mailto:pbis...@pppl.gov>> wrote: > Beowulfers, > > Have any of you updated the kernels on your clusters to fix the Spectre and > Meltdown vulnerabilities? I was following this issue closely for the first > couple of weeks. There seemed to be a lack of consensus on how much these > fixed would impact HPC jobs, and if I recall correctly, some of the patches > really hurt performance, or caused other problems. We took a wait-and-see > approach here. So now that I've waited a while, what did you see? > > -- > Prentice > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org<mailto:Beowulf@beowulf.org> > sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.beowulf.org%2Fmailman%2Flistinfo%2Fbeowulf&data=02%7C01%7Cnovosirj%40rutgers.edu%7Cc4cd547515a346014d0d08d5852058a0%7Cb92d2b234d35447093ff69aca6632ffe%7C1%7C0%7C636561296368291958&sdata=4fTJudM1x6k1L3KPRsLITJEy%2FKI%2FqaXOGJ6qwDJmgG4%3D&reserved=0> > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org<mailto:Beowulf@beowulf.org> > sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.beowulf.org%2Fmailman%2Flistinfo%2Fbeowulf&data=02%7C01%7Cnovosirj%40rutgers.edu%7Cc4cd547515a346014d0d08d5852058a0%7Cb92d2b234d35447093ff69aca6632ffe%7C1%7C0%7C636561296368291958&sdata=4fTJudM1x6k1L3KPRsLITJEy%2FKI%2FqaXOGJ6qwDJmgG4%3D&reserved=0 > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf -- Gavin W. Burris Senior Project Leader for Research Computing The Wharton School University of Pennsylvania Search our documentation: http://research-it.wharton.upenn.edu/about/ Subscribe to the Newsletter: http://whr.tn/ResearchNewsletterSubscribe _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
