[Beowulf] Barcelona hardware error: how to detect

Mikhail Kuzminsky kus at free.net
Thu Jun 5 14:09:58 EDT 2008


In message from Mark Hahn <hahn at mcmaster.ca> (Thu, 5 Jun 2008 13:55:01 
-0400 (EDT)):
>>> I believe the absence of 'x' in the B3 column of the table on p 15
>>> means that it _is_ fixed in B3.
>>
>> I received just now some preliminary data about Gaussian-03 run 
>>problems w/B2 
>> and about absence of this problems w/B3.
>
>I'm mystified by this: B2 was broken, so using it without the bios 
>workaround is just a mistake or masochism.  the workaround _did_ 
>apparently have performance implications, but that's why B3 exists...
>
>do you mean you know of G03 problems on B2 systems which are operating
>_with_ the workaround?

I don't know exactly, but I think the crash was under absence of 
workaround, because I was not informed that there was some kernel 
patches or BIOS changes. This was interesting for me also, because I 
have no information how this hardware problem may be affected in the 
"real life". 
  
Mikhail
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