On 14:24 Mon 12 Dec , Dave Love wrote: > Andreas Schäfer <gent...@gmx.de> writes: > > >> Yes, as root, and there are N different systems to at least provide > >> unprivileged read access on HPC systems, but that's a bit different, I > >> think. > > > > LIKWID[1] uses a daemon to provide limited RW access to MSRs for > > applications. I wouldn't wonder if support for this was added to > > LIKWID by RRZE. > > Yes, that's one of the N I had in mind; others provide Linux modules. > > From a system manager's point of view it's not clear what are the > implications of the unprivileged access, or even how much it really > helps. I've seen enough setups suggested for HPC systems in areas I > understand (and used by vendors) which allow privilege escalation more > or less trivially, maybe without any real operational advantage. If > it's clearly safe and helpful then great, but I couldn't assess that.
I think LIKWID's access daemon is specifically designed to provide a safe way of giving limited access to MSRs. I'm cc'ing Thomas Röhl as he knows more about this. Cheers -Andreas -- ========================================================== Andreas Schäfer HPC and Supercomputing Institute for Multiscale Simulation Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany +49 9131 85-20866 PGP/GPG key via keyserver http://www.libgeodecomp.org ========================================================== (\___/) (+'.'+) (")_(") This is Bunny. Copy and paste Bunny into your signature to help him gain world domination!
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