Chapter 7 - Parallel architectures, shared memory and cache coherency

Advanced Computer Architecture Chapter 7.20

Implementing Strong Consistency: update

Idea #1: when a store to address x occurs, update all the remote cached copies

To do this we need either:

To broadcast every store to every remote cache

Or to keep a list of which remote caches hold the cache line

Or at least keep a note of whether there are any remote cached copies of this line

But first…how well does this update idea work?