Command of how processors and systems are actually built: ISA and microarchitecture, pipelining and out-of-order execution, branch prediction, cache hierarchy and coherence, virtual memory, and the accelerator and interconnect structures that dominate modern SoCs.
No statement on what tools can do has been recorded for this skill yet.
Note from the research register: Built from Hennessy and Patterson and graduate architecture courses, then made concrete by performance analysis or RTL work on a real core or SoC.
Register version 1.