High performance computing (HPC) sits at the engine room of modern science and industry, and the current vendor landscape reflects a rapid re‑ordering driven by AI, exascale ambitions, and cloud-first delivery models. The industry is anchored by a handful of hardware and software leaders — AMD, HPE, IBM, Intel, Microsoft (Azure), Dell EMC, NEC, Sugon and Dassault Systèmes — and a broader ecosystem that includes accelerator vendors, interconnect and storage specialists, and software stack...