Seungbin Shin

Where CXL sits in the memory hierarchy — a memory pool next to the CPU and accelerator coherency

Memory in the AI Era, Part 4: Understanding CXL

Next to the GPU, HBM and HBF fill the gap — but there’s another empty seat next to the CPU. We look at CXL, the new interface that fills the awkward gap between PCIe and DDR: its basic structure, device types, and the CXL product blueprints the big three memory vendors are drawing.

Memory hierarchy pyramid — SRAM, DRAM, HBM, HBF, SSD

Memory in the AI Era, Part 1: Understanding HBF

Why are there so many types of memory, and where does HBF fit in? From SRAM to HBF, we explore the physical principles behind the memory hierarchy and the technical architecture of HBF.

Specs are All You Need: What is Spec-Driven Development (SDD)?

Spec-Driven Development (SDD) is a new development methodology for the AI era, moving beyond prompt engineering to spec engineering.