On Thu, Jun 5, 2008 at 1:09 PM, Mikhail Kuzminsky <[EMAIL PROTECTED]> wrote:
> In message from Mark Hahn <[EMAIL PROTECTED]> (Thu, 5 Jun 2008 13:55:01 > -0400 (EDT)): > >> I'm mystified by this: B2 was broken, so using it without the bios >> workaround is just a mistake or masochism. the workaround _did_ apparently >> have performance implications, but that's why B3 exists... >> >> do you mean you know of G03 problems on B2 systems which are operating >> _with_ the workaround? >> > > I don't know exactly, but I think the crash was under absence of > workaround, because I was not informed that there was some kernel patches or > BIOS changes. This was interesting for me also, because I have no > information how this hardware problem may be affected in the "real life". > Mikhail > The B2 BIOS work-around is to disable the L3 cache which gives you a 10-20% performance hit with no reduction in power consumption. The kernel patch is very extensive and, last I heard, under NDA. AMD has said publicly that the patch gives you a 1-2% performance hit.
_______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
