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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