4 ms·
Detection is certainly the harder part - but the rest of it is pretty well-trodden ground. Some POWER9 users noticed that linux was under-reporting their core c
by sennight 5y ago
Detection is certainly the harder part - but the rest of it is pretty well-trodden ground. Some POWER9 users noticed that linux was under-reporting their core count and further investigation showed that the CPU's RAS had identified some cores that were acting a little funky - so it automatically dropped them into a guard partition and logged the action in the persistent circular buffer that nobody had bothered writing open source code to watch. Of course IBM had already written a ton of software that had it covered in AIX. I've noticed the same thing on a lot of other platforms, I'm looking at an HP MicroServer right now that has low level hardware error logging that never makes it past the bios firmware - and I've been meaning to fix that for about two years now. It might be a good idea to tackle that issue before we start getting too clever with solutions.
Dynamic reconfiguration: Basic building blocks for autonomic computing on IBM pSeries servers
https://sci-hub.se/10.1147/sj.421.0029 https://sci-hub.se/10.1147/sj.421.0029