KAISER: hiding the kernel from user space [LWN.net]

KAISER: hiding the kernel from user space

Posted Nov 27, 2017 16:55 UTC (Mon) by NAR (subscriber, #1313)
In reply to: KAISER: hiding the kernel from user space by abufrejoval
Parent article: KAISER: hiding the kernel from user space

It might hinder optimization if running the same code under same circumstances results in different execution speed...

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KAISER: hiding the kernel from user space

Posted Jan 5, 2018 8:26 UTC (Fri) by clbuttic (guest, #121058) [Link] (1 responses)

ATLAS (Automatically Tuned Linear Algebra Software) does a lengthy tuning step that expects consistent CPU performance.

KAISER: hiding the kernel from user space

Posted Jan 6, 2018 16:02 UTC (Sat) by nix (subscriber, #2304) [Link]

Of course, that tuning step already requires sysadmin intervention to turn off CPU frequency changes, ideally hyperthreading, etc: adding one more intervention isn't likely to be terribly difficult.