[Beowulf] InfiniBand channel bundling?

Prentice Bisbal prentice.bisbal at rutgers.edu
Wed Oct 29 09:02:49 PDT 2014

On 10/28/2014 06:24 AM, John Hearns wrote:
> Here is a very good post from Glenn Lockwood regarding FDR versus dual-rail QDR:
> http://glennklockwood.blogspot.co.uk/2013/05/fdr-infiniband-vs-dual-rail-qdr.html

 From the article:

> The vendors would have you believe that FDR is just better in every 
> way (after all, FDR's 14Gbit peak is bigger than QDR's 10Gbit peak), 
> but I was skeptical. 

I thought that FDR was 54 Gb/s. I had to check Wikipedia. He's talking 
about 1x (single-lane) performance. Most IB is 4x.


Prentice Bisbal
Manager of Information Technology
Rutgers Discovery Informatics Institute (RDI2)
Rutgers University

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