[openib-general] RC v/s UD

Greg Lindahl greg.lindahl at qlogic.com
Fri Nov 24 18:57:34 PST 2006


On Wed, Nov 15, 2006 at 11:56:50AM +0530, john t wrote:

> So it seems UD is inefficient then RC
> (gives almost half the BW as that of RC). Is this expected?

In addition to the other comments you already got, it's worth noting
that different IB implementations give different performance for RC vs
UD. Don't be stuck thinking that one measurement applies to all of
InfiniBand, or even future adaptors from the same vendor.

-- greg





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