A New Approach to Directory Based Solution for Cache Coherence Problem

The major applications of multiprocessor system-on-a-chip (SoC) comprises of heterogeneous processors on a single chip. In this kind of integration, major problem is the cache coherence problem i.e. Maintenance of data integrity. In this paper, we propose a record based methodology to remove the cache coherence problem in heterogeneous multiprocessor platforms with shared and private memories. As shown in our simulation results, a performance improvement up to 18.75% is achieved while using proposed approach in four different benchmarks on LIMES simulator as compared to three other snoopy cache coherence protocols Dragon, Berkeley and MESI.