[Linux-HA] Learning the CIB

[John Hearns]

vini.bill at gmail.com wrote:
> Well It's a 10 Gigabit connection so... I tought I could try 100ms, but
> anyway. I'll That tomorrow ;).

You are confusing bandwidth and latency.
Sticking a wet finger in the air, you might get 80ms latency on a 
standard gigabit connection when passing MPI traffic, using a good switch.
Using specially tuned drivers, we get down to 20ms which allows us to 
build some highly cost effective and efficient gigabit Beowulf clusters.

Don't know about standard 10Gbps,
but if you're looking for low latency at 10Gbps Myrinet have a new line 
of NICs
http://www.myricom.com/Myri-10G/overview/

But in short, stick with the 1 second recommendation.



-- 
      John Hearns
      Senior HPC Engineer
      Streamline Computing,
      The Innovation Centre, Warwick Technology Park,
      Gallows Hill, Warwick CV34 6UW
      Office: 01926 623130 Mobile: 07841 231235