To summarize slide 14 and 15. According to real application experiment (LU, Ocean Sim, Ray Trace) "update based" coherence protocol can have less cache miss, but it will generate lots of traffic between caches. (because it needs to ask other cache for stale cache line value)
To summarize slide 14 and 15. According to real application experiment (LU, Ocean Sim, Ray Trace) "update based" coherence protocol can have less cache miss, but it will generate lots of traffic between caches. (because it needs to ask other cache for stale cache line value)