Abstract
The cache coherency protocol guarantees the validity of the cache block by keeping it with the latest updated contents. In multi-level cache memory hierarchy, the inclusion property enforces the lower layer cache to maintain the superset of its higher layer cache contents. The inclusion property has its benefits for cache coherence, but it may waste valuable cache blocks and bandwidth by invalidating the duplicated contents in the higher level cache. In this paper, a new cache contention management scheme is presented with modified inclusion property to avoid unnecessary cache block invalidation.
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