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This paper presents a low overhead, high performance cache coherence protocol designed to exploit high bandwidth point-to-point and broadcast features of optics. SPEED integrates the virtues of snoopy-based schemes and directory-based schemes into one eecient protocol. Directory-assist is used exclusively for read traac to eliminate unnecessary broadcasts(More)
This paper presents a token-based channel access protocol for wavelength division multiplexed optically interconnected multiprocessors. Our empirical study of access protocols based on slotted time division multiplexed data and control channels reveals that such protocols typically suffer from excessive slot synchronization latency due to static slot(More)
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