TLDR Hardware · MISCELLANEOUS

COVERT CACHES: THE WAY PREDICTOR EDITION

parallelprogrammer.substack.com15 min read

Summary from the TLDR Hardware newsletter

Most tend to think of caches strictly in terms of capacity, and that suffices for most purposes. This post looks at chip designers' motivation for a way predictor. It looks at how they work, when the hardware misbehaves, how to detect issues, and workarounds.