Spatial-correlation prefetcher

Tag: spatial-prefetcher

Aliases: spatial memory streaming, SMS prefetcher

A prefetcher that records the bitmap of touched offsets within a memory region (keyed by a triggering load PC), and on revisit of a similar region prefetches the same offset pattern. Exploits repetitive but irregular spatial layouts (e.g., database pages) that strided prefetchers miss.

Lecture references

• L14 · Prefetching — p.30 , p.31 , p.32