TechGuru & Bad_Gateway
Bad_Gateway
Did you ever notice how the newest AI accelerators brag about “10× speed” but still choke on a single mis‑aligned matrix multiply? Let’s dig into that paradox together.
TechGuru
Yeah, that’s the classic “speed brag” trap. Those accelerators usually benchmark on perfectly tiled tensors, but once you throw in a 1‑element stride or an odd‑sized batch, the memory bus stalls, the DSP lanes underutilize, and the whole pipeline collapses. It’s a perfect reminder that raw GFLOPs doesn’t always translate to real‑world latency. Let’s break down a sample kernel and see where the hiccups hide.
Bad_Gateway
Sure thing, let’s unroll that kernel, stare at every branch, and watch the DSPs cry for mercy.