On closer inspection I have to say that I am a bit confused by these rankings. It appears that Inspur (a Chinese HPC company listed as the vendor for Alibaba's

On closer inspection I have to say that I am a bit confused by these rankings. It appears that Inspur (a Chinese HPC company listed as the vendor for Alibaba's systems) lists its product as rack scale servers. By that standard what is to keep any data center operator from claiming a top spot on the list? Is it because Inspur systems can be configured to run Linpack benchmark as clusters? Alibaba's published use case http://www.inspursystems.com/case-studies/alibaba/ http://www.inspursystems.com/case-studies/alibaba/ does not seem particularly floating point intensive, so the distinction seems somewhat artificial.