New Cascade Lake Technologies
First off we find Intel's Speed Select Technology (SST), which allows for prioritization of cores to certain jobs, such as reducing the frequency for low priority jobs to maintain high frequency on a high priority job. It can also run specific cores at higher power limits while reducing the power limits of other cores.
Intel's customers are free to customize this technology and can pick from SST-PP profiles. It can be configured to run fewer cores at higher frequency or more cores at lower frequency, basically allowing the system to maximize resources through power manipulation and opportunistic turbo profiles.
Intel has shown us some of their new hardware mitigations for their 2nd generation Intel Xeon Scalable Processors. Variant 2 has some hardware hardening as does variant 3 and variant 4. Variant 3a was mitigated through hardware.
Intel has found that these hardware mitigations offer better performance than their software based variants, resulting in lower performance loss.
Last updated: Sep 24, 2019 at 12:28 am CDT
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