[Beowulf] Update on dealing with Spectre and Meltdown

[Alex Chekholko]

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> 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
>
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