Newsgroups: comp.sys.sun
Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!wuarchive!rice!rice!sun-spots-request
From: huebener@fbihh.informatik.uni-hamburg.de (Kai Huebener)
Subject: Memory problem with SUN 4/330
Message-ID: <1990Aug7.003345.1862@rice.edu>
Originator: spots@titan.rice.edu
Keywords: Hardware
Sender: sun-spots-request@rice.edu
Organization: Sun-Spots
X-Sun-Spots-Digest: Volume 9, Issue 295, message 4
Date: Mon, 6 Aug 90 12:03:28 +0200
Approved: Sun-Spots@rice.edu

One of our SUN4/330s is behaving strangely since two weeks: Every now and
then we will get a message like

vmunix: Parity Error: Physical Address ....
vmunix: Memory Error in SIMM U801 on First 3U Memory Card:
vmunix: panic: synchronous parity error - kernel

and so on.

The system will then either reboot or fall into the watchdog reset.

SUN has already changed the memory board (twice) and the CPU board, but
has not yet fixed the problem. When we try to run the system with only 8
MB main memory then everything is fine. But as soon as we add the 3U
memory card, the system crashes (we tried it with three different cards).

We also upgraded from SunOS 4.0.3 to 4.1 but that didn't change anything.

Has anyone experienced similar problems ... and has anyone solved them?

Thanks in advance for any hints..

Gtgs, Kai.

PS: Please email to huebener@fbihh.informatik.uni-hamburg.dbp.de

Kai Huebener
Computer Science Dept.
Univ. of Hamburg