[vox-tech] ECC memory --- is it worth it? (semi-OT)

[Bill Broadley]

hajhouse wrote:

> So all AMD64-supporting boards are ECC-capable, then?

Hrm, well, the motherboard maker has only to tweak a few bits in BIOS, and
run traces to all 72 pins on the dimms.  I wouldn't rule out a non-ecc capable
amd64, but it's much better than the intel situation where you have to buy
a more expensive north bridge to get ECC.

Every motherboard manual I've seen refers to a list of certified compatible
Dimms, tyan, supermicro, and asus anyways.  I'd check that list.  Seen ECC
listed there without any kind of foot note that says [without ECC
functionality] would be a very good sign.

Keep in mind that it's often hard to find ECC dimms that are unregistered,
seems like most dimms are non-ecc and non-registered, or ecc and registered.

> Linux wotan 2.6.17-10-generic #2 SMP Tue Dec 5 22:28:26 UTC 2006 i686 GNU/Linux
> 
> Try 'modprobe ecc'.
> '

root at orca:~# uname -a
Linux orca 2.6.17-10-generic #2 SMP Tue Dec 5 21:16:35 UTC 2006 x86_64 GNU/Linux

root at orca:~# modprobe ecc
FATAL: Error inserting ecc
(/lib/modules/2.6.17-10-generic/kernel/drivers/char/ecc.ko): No such device

[  161.803445] ECC: monitor version 0.14 (Oct 10 2001)
[  161.803458] ECC: Unknown device 1022:1100.
[  161.803463] ECC: Unknown device 1022:1101.
[  161.803466] ECC: Unknown device 1022:1102.
[  161.803469] ECC: Unknown device 1022:1103.
[  161.803472] ECC: Unknown device 1022:1100.
[  161.803474] ECC: Unknown device 1022:1101.
[  161.803479] ECC: Unknown device 1022:1102.
[  161.803482] ECC: Unknown device 1022:1103.
[  161.803485] ECC: Can't find host bridge.

No workie 8-(.

I'll investigate further.

The box above is a dual socket dual core opteron (socket f/ddr-II).


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