A Token-based Channel Access Protocol for Wavelength Division Multiplexed Optically Interconnected Multiprocessors
نویسندگان
چکیده
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 preallocation. The proposed token-based time division multiple access protocol minimizes latency by allowing dynamic allocation of slots to use channels efficiently. Simulation results indicate that the proposed scheme can significantly increase the performance of protocols based on preallocation and those based on preallocation-controlled reservation of multiple channels.
منابع مشابه
Interaction Of Cache Coherency And Media Access Protocols In The Optically Interconnected Distributed Memory Environment
The objective of this paper is to develop a tool to study the interaction between the cache coherence protocol and the media access protocol for a multiprocessor system in a wavelength division multiplexed star-coupled configuration. This simulation is modular for easy swapping of component functional specifications, and inter-module communication is achieved through a message passing facility....
متن کاملLow-Complexity Multiple Access Protocols for Wavelength-Division Multiplexed Photonic Networks
Abstract Media access control protocols for an optically interconnected star-coupled system with pre-allocated Wavelength Division Multiple Access channels are introduced and compared. The photonic network is based on a passive star-coupled configuration where high topological connectivity is achieved with low complexity and excellent fault-tolerance. The channels are pre-allocated to the nodes...
متن کاملDynamic Interleaved Slotted ALOHA: A Multiple Access Protocol for Wavelength Division Multiplexed Photonic Networks
This paper introduces a preallocation-based multiple access protocol for wavelength-division multiplexed (WDM) optically interconnected passive star-coupled networks. The objective is to combine the strengths of two other preallocation-based strategies, interleaved slotted ALOHA (I-SA) and interleaved time division multiple access with multiple buffers (I-TDMA*), while minimizing their inherent...
متن کاملMemory and Network Architecture Interaction in an Optically Interconnected Distributed Shared Memory System
This paper develops a performance model of an optically interconnected parallel computer system operating in a distributed shared memory environment. The performance model is developed to reflect the impact of low level optical media access protocol and optical device switching latency on high level system performance. This enables the model to predict the performance impact in supporting distr...
متن کاملDesign and Performance Analysis of Pre-Allocation Protocols for WDM Photonic Networks
Wavelength Division Multiplexing (WDM) enables partitioning the enormous bandwidth of photonic networks into multiple smaller, more manageable, multiple access channels. These channels operate at a data rate which matches the electronic interface speed, viz. Gbps. Media access protocols for an optically interconnected star-coupled WDM network with no control channel are introduced and compared....
متن کامل