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This paper proposes a new speculative coherencescheme, SCDS, for hardware distributed shared memory systemsto reduce the overhead of coherence action in directory-basedcache-coherence protocol. SCDS has two main features,predicting accurate timing of speculative coherence withsynchronization information and detecting write pattern(migratory and non-migratory) for exclusive blocks' speculativecoherence action. In our simulation, SCDS outperforms existingschemes (DSI and LTP) for well-synchronized applications.

K. Sihn, J. Lee and J. Jung-Wan Cho, "A Speculative Coherence Scheme using Decoupling Synchronization for Multiprocessor Systems," in IEEE Computer Architecture Letters, vol. 2, no. , pp. 1, 2003.
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