[Beowulf] "dual" Quad solution from Tyan

[Joe Landman]

Mark Hahn wrote:

>>Not quite, this would make no use of two HT channels.  Its like this:
>>
>>c--c--c--c
>>|  |   \/|
>>|  |   /\|
>>c--c--c--c
>>
>>(The two leftmost CPUs need their third HT to connect the two chipsets.)
> 
> 
> are you sure about that (ie, inspected the traces, or the HT routing 
> tables)?  by your logic, for instance, a plain 4x would have one 
> cross-link (and I don't think they do.)

See page 2 of ftp://ftp.tyan.com/datasheets/d_s4881_104.pdf

(this is not an endorsement of Tyan)

-- 
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
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