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I have been waiting, specifically, for Prentice Bisbal to try it. :-P<br>
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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.
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`'</span></div>
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On Mar 8, 2018, at 13:13, Alex Chekholko via Beowulf <<a href="mailto:beowulf@beowulf.org">beowulf@beowulf.org</a>> wrote:<br>
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<div dir="ltr">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 :)</div>
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<div class="gmail_quote">On Thu, Mar 8, 2018 at 10:10 AM, Prentice Bisbal <span dir="ltr">
<<a href="mailto:pbisbal@pppl.gov" target="_blank">pbisbal@pppl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Beowulfers,<br>
<br>
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?<span class="HOEnZb"><font color="#888888"><br>
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-- <br>
Prentice<br>
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