CPU Architecture

Understands basic CPU architecture: registers, pipeline, operating modes (user/kernel). Knows ARM Cortex-M and x86 architecture basics, studies instruction set under mentor guidance.

Proficient in target CPU architecture: cache hierarchy (L1/L2/L3), TLB, branch prediction. Optimizes code for microarchitecture, understands platform memory ordering model.

Deep knowledge of multiple CPU architectures (ARM, x86-64, RISC-V). Designs code considering cache coherency protocols (MESI/MOESI), NUMA topology, speculative execution.

Defines architectural decisions considering target CPU specifics. Establishes optimization guidelines for specific microarchitectures, conducts critical code reviews.

Shapes enterprise CPU architecture support strategy. Evaluates new ISAs for company products, defines approaches to porting between ARM/x86/RISC-V, mentors experts.