[Beowulf] Update on dealing with Spectre and Meltdown

Ryan Novosielski novosirj at rutgers.edu
Thu Mar 8 10:55:34 PST 2018


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 - novosirj at rutgers.edu<mailto:novosirj at 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 at beowulf.org<mailto:beowulf at 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 <pbisbal at pppl.gov<mailto:pbisbal at 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 at beowulf.org<mailto:Beowulf at 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 at beowulf.org<mailto:Beowulf at 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.beowulf.org/pipermail/beowulf/attachments/20180308/32b48f96/attachment-0001.html>


More information about the Beowulf mailing list