We used Gnodal units for the original Lucera system. Very nice devices with a few idiosyncrasies. Gnodal ran into some funding problems earlier this year, and had to find a buyer. Cray grabbed them and a number of the people involved.
This is good for Gnodal and Cray. Gnodal has interesting technology. And Cray may be looking at how to leverage SDN for its system using this (wild guess on my part, I have no knowledge direct or indirect of their plans/intentions/…).