These DSP cores, which IBM calls "synergistic processing elements" (SPE), but I'm going to call "SIMD processing ... of added processors). What I've tried to illustrate with this diagram and ...

and the A70X‑MP™ and A70XP‑MP™ enable the creation of symmetric multi-processor (SMP) systems. The RISC-V P extension consists of 331 instructions which can be divided into groups. The A70XP includes ...