Date: Sun, 11 Apr 1999 15:29:24 -0500 From: "Gooderum, Mark" <mark@jumpweb.com> To: "'Bruce M. Walter'" <walter@fortean.com>, Doug Rabson <dfr@nlsystems.com> Cc: "Gooderum, Mark" <mark@jumpweb.com>, freebsd-alpha@FreeBSD.ORG Subject: RE: FreeBSD on Alpha Multia ( Message-ID: <50C732FEDE87D211954300A024786203A6A8@archeron.good.com>
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> > > Issue 2 - Random crashes... > Yes. On my multia. I shot some messages through this list approximately > a month ago. I wound up building my tree on my Miata and sending it over > the net to the Multia. > > The best guess before was dodgy hardware, most likely the memory.... My memory should be pretty good. I've got 64M of DEC branded true parity RAM salvaged from an old 590XL (more recently known as Celebris') that has functioned fine in other systems. I've been wondering if it's dodgy hardware due to Thermal Loading. The Multia Service manual says the machine should be a maximum internal air temperature of 40 Deg. Cent. which is only 104 Deg. Far. which really isn't very warm. The area of the MB around the Alpha chip and the Alpha chip heat sink gets up to right below the pain threshold, which makes it about 130-140 Deg Far. I don't have a decent thermometer anymore for actually measuring the air temp in the case. At one point I got a series of ncr0 firmware errors similar to those mentioned earlier, shut the system down and let it cool for a while and those problems went away. Subjectively the box seems to stay cooler in a horizontal mode than vertical in the little plastic stand supplied. I think part of the problem is vertical as the stand put's it, the P/S fan is blowing _against_ natural convection accross the Alpha CPU's heat sink. -- Mark To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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