Coarse-Grain Coherence Tracking: RegionScout and Region Coherence Arrays

Authors:
Jason F. Cantin;James E. Smith;Mikko H. Lipasti;Andreas Moshovos;Babak Falsafi
Affiliations:
University of Wisconsin-Madison;University of Wisconsin-Madison;University of Wisconsin-Madison;University of Toronto;Carnegie Mellon University
Venue:
IEEE Micro
Year:
2006

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Abstract

Coarse-grain coherence tracking is a new technique that extends a conventional coherence mechanism and optimizes coherence enforcement. It monitors the coherence status of large regions of memory and uses that information to avoid unnecessary broadcasts and filter unnecessary cache tag lookups, thus improving system performance and power consumption.