[vortex] Problem with built-in dual 3c982, Dual AMD S2462 MB.

[Heflin, Roger A.]

Donald,

The machines having the issue are both AAPRO and Racksaver
machines.   They were delivered early december, they are running
2.2.19 (1-2 extra patches) what are your customers running?

So far with noapic it has only failed once on 1 machine, we don't
know absolutely for sure that it was the same thing, but the 
log messages look consistant.

I will setup a larger test with both more machines and more 
iterations of the test to determine if this 1 machine was a
fluke and has some other issue, or if their is truly a problem.

		Roger

> -----Original Message-----
> From:	Donald Becker [SMTP:becker@scyld.com]
> Sent:	 1/ 18/ 2002 2:53 PM
> To:	Heflin, Roger A.
> Cc:	Bogdan Costescu; vortex@scyld.com
> Subject:	RE: [vortex] Problem with built-in dual 3c982, Dual AMD
> S2462 MB.
> 
> On Fri, 18 Jan 2002, Heflin, Roger A. wrote:
> 
> > We have confirmed that noapic is now turned on, noapic did
> > improve things, it appears that the situation is probably 10
> > times better, but is still a significant problem.
> 
> We always enable 'noapic' by default to avoid this problem.  It's a
> slight performance hit on SMP, but the reliability is well worth it.
> 
> > And from what I can tell all of the recent tyan dual
> > cpu AMD boards S2462 with the 3com's on them
> > seem to  do this.   I have a very large number of 
> > the machines (100+) and the all appear to 
> > have the issue, or at the very least alot of them 
> > appear to have the issue.
> 
> Hmmm, customers have used those on clusters running our Beowulf system
> without reported prolems.  We have one in-house, loaned by APPro for
> release testing, that doesn't exhibit a problem.
> 
> Donald Becker				becker@scyld.com
> Scyld Computing Corporation		http://www.scyld.com
> 410 Severn Ave. Suite 210		Second Generation Beowulf
> Clusters
> Annapolis MD 21403			410-990-9993
>