Comparison and analysis of software and directory coherence schemes
Yung-Chin Chen, Alexander V. Veidenbaum · 1991
Directory schemes and software schemes have been proposed to solve the cache coherence problem for the MIN-based large-scale multiprocessor system.We compare the performance of the two schemes using irate-driven simulation including the effect of fake sharing caused by a nontrivial cache line size.It shows that the simplest software scheme can have a hit ratio and shared memory trafic comparable to those of the directory scheme.The invalidations and the sharing behavior of the directory scheme are classified and analyzed.