On Hardware

Hardware-level concerns that inform Composer’s code generation: cache-conscious placement on CPU and GPU, bare-metal targets, and ternary/posit arithmetic in silicon. The section also reaches past the microcontroller. Sealed images span a substrate spectrum, an image with no OS beneath it carries its own dispatch contract, and on spatial silicon the registers are compilation outputs. The memory-across-substrates story, unified memory, coherent links, and RDMA fabrics, lives in Memory Fabrics.