HPC still has a lot of Intel, because these systems run for ~5 years. But if I look at the Top500, there is systems with AMD Rome (and Milan and Naples). There is systems with IBM POWER9 (and POWER7) and the fastest system in the list is of course running Fujitsu A64FX. And there is exotic systems with Vector Engine, Marvell ThunderX2, Hygon Dhyana or Sunway.
And while Xeon Phi (and predecessors) used to be very popular, the accelerator market is now dominated by Nvidia (mostly Volta, but also Ampere and Pascal) and AMD Vega.
Actually only two systems (#7 in China and #10 in Texas) of the top 10 systems rely on Intel. And upcoming systems also feature a wild mix of architectures and vendors. So way less inertia that you might think.
And while Xeon Phi (and predecessors) used to be very popular, the accelerator market is now dominated by Nvidia (mostly Volta, but also Ampere and Pascal) and AMD Vega.
Actually only two systems (#7 in China and #10 in Texas) of the top 10 systems rely on Intel. And upcoming systems also feature a wild mix of architectures and vendors. So way less inertia that you might think.