Yes, it is the interconnects that are important. The UK Met Office has also recently upgraded to a Cray XC40 [0], and there are other XC30 systems in the UK NSS [1] and the US NERSC [2], both of which are used for weather&#x2F;climate models, amongst other things.<p>[0] <a href="http:&#x2F;&#x2F;www.metoffice.gov.uk&#x2F;news&#x2F;releases&#x2F;archive&#x2F;2014&#x2F;new-hpc" rel="nofollow">http:&#x2F;&#x2F;www.metoffice.gov.uk&#x2F;news&#x2F;releases&#x2F;archive&#x2F;2014&#x2F;new-h...</a><p>[1] <a href="http:&#x2F;&#x2F;www.archer.ac.uk&#x2F;about-archer&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.archer.ac.uk&#x2F;about-archer&#x2F;</a><p>[2] <a href="http:&#x2F;&#x2F;www.nersc.gov&#x2F;systems&#x2F;edison-cray-xc30&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.nersc.gov&#x2F;systems&#x2F;edison-cray-xc30&#x2F;</a>