[Beowulf] InfiniBand channel bundling?

[Prentice Bisbal]

On 10/28/2014 04:43 PM, Mark Hahn wrote:
> On Tue, 28 Oct 2014, 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 
>>
>
> indeed, very nice.  though also quite surprising - is it known that 
> FDR is so terrible for latency?  seems astonishing to me.
>

Yes, it was known to me. I had already known that FDR was worse than QDR 
for latency, but I don't remember my source. I don't know if I'd 
characterize it as "so terrible", though.

-- 
Prentice