Intel PRO/1000CT Gigabit ethernet with CSA (fwd)

Robert Myers rmyers1400 at attbi.com
Fri Jun 27 21:26:22 EDT 2003


Donald Becker wrote:

>This appears to connect directly to the internal motherboard chipset
>crossbar, giving high-bandwidth access without (directly) conflicting
>with the PCI bus.
>
>This architecture does reduce the bus access latency compared PCI, but
>there will be no measurable reduction in network communication latency.
>
>If there were a Infiniband adapter connected to the same crossbar port,
>you *would* be able to notice a significant reduction in single-word
>transfer latency.
>  
>
There doesn't seem to be enough documentation anywhere even to decide 
whether such an enterprise is possible.  CSA appears to be proprietary, 
so, Intel being Intel, you probably need a license to hook up to that 
port with an infiniband adapter of your own creation.  Anyone have a 
clue otherwise?   I feel almost silly asking, because every bit of 
evidence I've seen indicates that Intel is trying to create a 
competitive advantage for its own network silicon by giving it unique 
access to the MCH.

RM

RM


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