Håkon Bugge <[EMAIL PROTECTED]> writes: > Its even worse. On one mtbd; the BIOS had a menu for enabling ECC; I > did. But reading the register from the chipset revealed nothing was > actually enabled in the hardware. You have to be paranoid in this > business. This was a "bleeding edge" mtbd, with a low revision BIOS of > course. The fu being that a car manufacturer ran a cluster of these > for several months doing crash worthiness simulations ...
So another question is, how can you reliably test any of this stuff? It isn't like you can reliably induce single bit errors and see if the hardware catches them. (A special memory module that let you test would be a wonderful thing, but I've never even heard of such a thing.) I'm doing the planning for a new cluster and the whole thing is remarkably bothersome. You can't easily figure out what motherboards will even pretend to do ECC that easily, you can't easily check once you have a sample motherboard in hand. It isn't even easy to get ECC memory for more modern standards. I'm starting to wonder if doing all calculations twice, once on each of two machines, isn't easier, but it seems utterly wrong to do that... Perry _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
