On Mon, 3 Aug 2015 12:06:27 PM Mikhail Kuzminsky wrote: > Current Intel Haswell E5 v3 may also have 18 = 2**4 +2 cores. Is there some > sense to try POWER BQC or SPARC64 XIfx ideas (not exactly), and use only 16 > Haswell cores for parallel computations ? If the answer is "yes", then how > to use this way under Linux ?
Doing this with Linux predates BGQ for instance - the whole cpuset idea came from SGI and was used on their Itanic Altix systems to provide a boot CPU set that would have all system processes confined into and then the rest of the cores were available for jobs. When we used to use Torque I agitated for cpuset support, and for it to be done in a way that would allow this. We use Slurm now, but I've never looked at how easy to make it work in the boot cpuset type mode - it's probably just a matter of telling it there are N-1 cores per node and ensuring that it doesn't try and claim the same core you're using as the boot cpuset. :-) Best of luck! Chris -- Christopher Samuel Senior Systems Administrator VLSCI - Victorian Life Sciences Computation Initiative Email: [email protected] Phone: +61 (0)3 903 55545 http://www.vlsci.org.au/ http://twitter.com/vlsci _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
