-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 14/09/12 00:09, hol...@th.physik.uni-frankfurt.de wrote:
> It turned out that the kernel did not yet support AVX or FMA4 or > some other new fancy bit of register blah blah so it reverted to > some compatibility support for floating point operations. (I am not > a kernel dev :) Hmm, I'd be surprised if the kernel affected FP performance much, I'd have thought that'd be all in user space and the kernel would be doing its best to stay out of your way at that point (until you try and do I/O). Things that might affect it may be poor hardware support in terms of NUMA detection and locality as well as process scheduling. I'm not a kernel dev either, I just follow the git repo (and the btrfs mailing list). :-) > If your going to play with newer processors you have to make sure > your kernel supports all the functions of that CPU. Agreed. > Kernel development can be a little way behind on mainstream > releases. Actually the mainline kernel repo usually has support for CPUs from Intel/AMD before they hit the streets, it's the "enterprise" distros where they generally fall short. cheers, Chris - -- Christopher Samuel Senior Systems Administrator VLSCI - Victorian Life Sciences Computation Initiative Email: sam...@unimelb.edu.au Phone: +61 (0)3 903 55545 http://www.vlsci.org.au/ http://twitter.com/vlsci -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlBSb+8ACgkQO2KABBYQAh9ZVQCfTM93VBuTmayyybN7dOw2oRdY tYEAn18deGpqEnrTdxRIftn5lWy2tpNK =65Bh -----END PGP SIGNATURE----- _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
