Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Christopher Samuel
On 06/01/18 12:00, Gerald Henriksen wrote: For anyone interested this is AMD's response: https://www.amd.com/en/corporate/speculative-execution Cool, so variant 1 is likely the one that SuSE has firmware for to disable branch prediction on Epyc. cheers, Chris -- Chris Samuel : http://www.

Re: [Beowulf] nVidia revealed as evil

2018-01-05 Thread C Bergström
On Sat, Jan 6, 2018 at 8:43 AM, Gerald Henriksen wrote: > On Fri, 5 Jan 2018 22:52:19 +, you wrote: > > >There has been a conversation going on on the AMBER mailing list for some > time, related to this and specifically to the Volta card in some way, since > AMBER performs best on the consume

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Gerald Henriksen
On Fri, 5 Jan 2018 17:32:19 -0500, you wrote: >According to several articles I read today: > >Meltdown (1 exploit)is Intel-specific >Spectre  (2 different exploits) affects just about every processor on >the planet. For anyone interested this is AMD's response: https://www.amd.com/en/corporate/

Re: [Beowulf] nVidia revealed as evil

2018-01-05 Thread Gerald Henriksen
On Fri, 5 Jan 2018 22:52:19 +, you wrote: >There has been a conversation going on on the AMBER mailing list for some >time, related to this and specifically to the Volta card in some way, since >AMBER performs best on the consumer grade stuff and doesn’t require the >enterprise class featur

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Gerald Henriksen
On Fri, 5 Jan 2018 17:32:19 -0500, you wrote: >According to several articles I read today: > >Meltdown (1 exploit)is Intel-specific >Spectre  (2 different exploits) affects just about every processor on >the planet. This is correct, and the other key difference is that so far there is only a sol

Re: [Beowulf] nVidia revealed as evil

2018-01-05 Thread Ryan Novosielski
On Jan 3, 2018, at 10:57, Lawrence Stewart mailto:stew...@serissa.com>> wrote: Of course you cannot use our less expensive hardware for whatever you want! Beacuse it includes proprietary software, we can ex-post-facto forbid you from using the thing you paid for any way you want. Looks like S

Re: [Beowulf] nVidia revealed as evil

2018-01-05 Thread Prentice Bisbal
On 01/04/2018 04:02 PM, Douglas Eadline wrote: I'm actually building a dual 1080ti box to run Amber for one of my customers this month. Fortunately it won't go in a data center but in the lab. So when the Nvidia police investigate the students can quickly switch over to GTA. I can see it now -

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Prentice Bisbal
On 01/05/2018 02:14 PM, Christopher Samuel wrote: On 06/01/18 03:46, Jonathan Aquilina wrote: Chris on a number of articles I read they are saying AMD's are not affected by this. That's only 1 of the 3 attacks to my understanding. The Spectre paper says: # Hardware. We have empirically ve

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Christopher Samuel
On 06/01/18 03:46, Jonathan Aquilina wrote: Chris on a number of articles I read they are saying AMD's are not affected by this. That's only 1 of the 3 attacks to my understanding. The Spectre paper says: # Hardware. We have empirically verified the vulnerability of several # Intel processors

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Remy Dernat
Meltdown - AMD not affected - specific to Intel products Spectre - all cpus https://blogs.manageengine.com/desktop-mobile/2018/01/05/meltdown-and-spectre-battling-the-bugs-in-intel-amd-and-arm-processors.html Message d'origine De : Jonathan Aquilina Date : 05/01/2018 17:47 (GMT

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Jonathan Engwall
Trying to fathom all of this I stumbled on: https://github.com/fanout/pollymer Pollymer's existence seems to be only to wander the internet looking for a header to copy. On Jan 5, 2018 8:27 AM, "Christopher Samuel" wrote: On 05/01/18 10:48, Jörg Saßmannshausen wrote: What I would like to know i

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Jonathan Aquilina
Chris on a number of articles I read they are saying AMD's are not affected by this. On 05/01/2018 17:27, Christopher Samuel wrote: > On 05/01/18 10:48, Jörg Saßmannshausen wrote: > >> What I would like to know is: how about compensation? For me that is >> the same as the VW scandal last year. We

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Christopher Samuel
On 05/01/18 10:48, Jörg Saßmannshausen wrote: What I would like to know is: how about compensation? For me that is the same as the VW scandal last year. We, the users, have been deceived. I think you would be hard pressed to prove that, especially as it seems that pretty much every mainstream

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread Christopher Samuel
On 03/01/18 23:56, Remy Dernat wrote: So here is me question : if this is not confidential, what will you do ? Any system where you do not have 100% trust in your users, their passwords and the devices they use will (IMHO) need to be patched. But as ever this will need to be a site-specific r

Re: [Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

2018-01-05 Thread John Hearns via Beowulf
This seems very relevant https://security.googleblog.com/2018/01/more-details-about-mitigations-for-cpu_4.html?m=1 On 4 Jan 2018 11:49 pm, "Jörg Saßmannshausen" wrote: > Dear all, > > that was the question I was pondering about all day today and I tried to > read > and digest any information I