Today’s @risc_v Tip: RISC-V defines its memory model (RVWMO) in the context of 3 orderings: Program Order: order of ops performed by a single hart Global Memory Order: order of ops performed by all harts Preserved Program Order: subset of program order respected globally This diagram is an abstract example, but the key points are illustrated: memory operations appear to perform sequentially in the context of a single hart, but may not be observed in the same order globally.
