AMD/SeaMicro/HPC
"If AMD was going to lose the high-end supercomputer battle against Intel in the Cascade generation at Cray, then the 3D torus/mesh interconnect created by SeaMicro, which can scale to thousands of nodes, could give AMD something to peddle to OEMs chasing smaller HPC shops as well as hyperscale and dense cloud infrastructure."
My reading of the SeaMicro hardware is that it is shared nothing. The clever parts are in the perf/w, power, connectivity and rack space to simplify life for large data centres. While this could scale down to small installations as well, I don't see an HPC angle.