On 04/18/2013 04:32 PM, Gandalf Corvotempesta wrote:
2013/4/18 Mark Nelson <mark.nelson@xxxxxxxxxxx>:
Well, even with RDMA you probably aren't going to get much more than
~3.2GB/s (or at least that's what I saw on our production clusters at my
last job). There's encoding overhead so you can't get the full 40Gb/s.
Beyond that, it's just another software layer with the associated
inefficiencies. Frankly I'm kind of amazed that rsockets can supposedly get
around 3GB/s. That's impressive performance imho.
What about SDP ? It should be a transparent TCP replacement that will
operative natively on an IB fabric with huge speed improvement and
almost none overhead:
http://bit.ly/14zQzME - Page 43 (4.3.1)
SDP is deprecated:
http://comments.gmane.org/gmane.network.openfabrics.enterprise/5371
rsockets is the future I think.
Mark
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