Every single physical core on the chip decodes and executes both s390x and Arm AArch64 instructions, dynamically switching between the two ISA modes and convert them into micro ops. Mode switching is hypervisor-driven.
And those chips are fast. 5.7 Ghz 2nm node.
For who: When you need to run Linux programs on high security, mission critical environment. Others should not care.
There was a card just detailed on Hot Chips that used a whole bunch of RISC-V CPUs on 2nm to run at 1.8GHz, but really low power, for compute on a CXL card that could also have SSDs for cached storage.
There will be RISC-V implementions specific to many use cases of CPUs.
I have to admit we were more in the "desktop" use case, then the 7GHz (I don't know how they will manage to keep the backend reasonably fed without severe speculation though).
Every single physical core on the chip decodes and executes both s390x and Arm AArch64 instructions, dynamically switching between the two ISA modes and convert them into micro ops. Mode switching is hypervisor-driven.
And those chips are fast. 5.7 Ghz 2nm node.
For who: When you need to run Linux programs on high security, mission critical environment. Others should not care.