Dcache ECC error on cpu0

mmain_1 — Sat, 13 Aug 2005 11:57:05 GMT

I administrate a Compaq Alpha Server ES40 with four EV67 CPUs 666Mhz
with
8 GByte RAM with the following memory organisation:

0 2048Mb 0000000000000000 4-Way
1 2048Mb 0000000080000000 4-Way
2 2048Mb 0000000100000000 4-Way
3 2048Mb 0000000180000000 4-Way

After one year of running a few weeks ago the following messages appear
in the syslog:

Jul 22 16:12:15 ragnaroek vmunix: WARNING: too many Processor corrected
errors detected on cpu 2. Reporting suspended.
Jul 22 16:13:27 ragnaroek vmunix: WARNING: too many Processor corrected
errors detected on cpu 1. Reporting suspended.
Jul 22 16:14:18 ragnaroek vmunix: WARNING: too many Processor corrected
errors detected on cpu 3. Reporting suspended.

and a few hours later the machine goes to the console prompt.

During the memory test the following messages appear:

EV6 Correctable Memory Fill ECC Error on CPU 0
C_ADDR: 00000000A8FC5BC0
C_SYNDROME_1: 0000000000000057
C_SYNDROME_0: 0000000000000000

EV6 Correctable Dcache ECC Error on CPU 0

EV6 Correctable Memory Fill ECC Error on CPU 0
C_ADDR: 00000000A8FD2BC0
C_SYNDROME_1: 0000000000000057
C_SYNDROME_0: 0000000000000000

First, I thought, it's an defect DRAM module, located in bank 1 because
of the
C_ADDR information. But after removing bank the error still occurs.

So, my question, it is a memory or CPU problem, and, if it's a memoery
problem,
how can I determine the defect DRAM Chip? I haven't found any suitable
documentation.

Re: Dcache ECC error on cpu0

Michael Schulte zur Sur — Sun, 14 Aug 2005 07:02:55 GMT

Hi,

it may be a cpu fault as well. If you do not have a maintenance contract, you should replace cpu 0 with cpu 3 and restart the machine.

greetings,

Michael

Re: Dcache ECC error on cpu0

amrelsayed — Mon, 15 Aug 2005 05:42:08 GMT

hi mmain,

your problem is memory, but to determine which dimm, please send to me the binary.errlog file of your ES40 Machine.

My Email address: aelsayed@ncs.com.kw

Best regards,
Amr

Re: Dcache ECC error on cpu0

mmain_1 — Tue, 16 Aug 2005 08:55:07 GMT

dear all:

problem is member bad!
thank!!!

Re: Dcache ECC error on cpu0

Michael Schulte zur Sur — Tue, 16 Aug 2005 09:33:43 GMT

What do you mean by member is bad?

Michael

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Dcache ECC error on cpu0

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Re: Dcache ECC error on cpu0

Re: Dcache ECC error on cpu0