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

Jan Heichler jan.heichler at gmx.net
Wed Oct 1 14:19:11 EDT 2008


Hallo Prentice,

Mittwoch, 1. Oktober 2008, meintest Du:

PB> And what is the status of DDR? Are people still using it, or has it
PB> already been replaced by QDR in the marketplace?

DDR is still the most important Infiniband in the market. DDR provides enough bandwidth for most applications at the moment because most applications suffer from latency - not limited bandwidth. QDR is more interesting for building spine networks. And QDR might get more important if we see more cores in typical compute nodes. 

>> 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).

PB> What *other* technolgies are you talking about QDR IB, or something
PB> other than IB altogether, like 10 Gb Ethernet, or something all new and
PB> proprietary?

Cisco is dropping IB - probably to go for 10GE. It was a short time for Cisco offering IB solutions - bur probably they weren't very successful.

Jan
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