[Beowulf] Has DDR IB gone the way of the Dodo?

Rob Patience rpatienc at cisco.com
Wed Oct 1 16:58:51 PDT 2008

Only the larger switches were from QLogic (144 and 288 ports) all  
other switches were made by TopSpin/Cisco directly. Cisco is not  
leaving the HPC space only IB.

Btw:  you can still buy cables from Cisco. But as mentioned, all  
cables come from 3rd party vendors.


On Oct 1, 2008, at 1:03 PM, Greg Lindahl wrote:

> On Wed, Oct 01, 2008 at 01:59:05PM -0400, Prentice Bisbal wrote:
>> I'm sure you're right. It's my understanding that IB is a
>> well-documented standard, so all IB cables should be created equally,
>> but you know vendors, they'll say that their cables are more equal  
>> than
>> others and refuse support if we're not using all Cisco kit.
> Then buy from an IB vendor that isn't silly like that. QLogic and
> Voltaire are choices. Is Cisco still re-selling QLogic switches?
> Joe wrote:
>>> Cisco does appear to be transitioning to *other* technologies.   
>>> Again,
>>> they aren't the only IB provider out there (seems such a shame,  
>>> gobbling
>>> up TopSpin and then effectively discarding them).
> Apparently the main attraction of TopSpin was their virtualization
> software. Cisco, of course, supports all the major technologies, so it
> can be hard to tell if they really are transitioning to something
> else. At a minimum Cisco will want to sell gateways for all
> non-Ethernet technologies. After TopSpin was bought, Cisco continued
> to sell gateways developed by TopSpin, but sold rebranded QLogic DDR
> switches.
> -- greg
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