This study proposes a concise performance model for computing communication delay in the torus network with circuit switching in the presence of multiple time-scale correlated traffic which is found in many real-world parallel computation environments and has strong impact on network performance. Analytical modelling plays an important role in achieving this goal. In order to ensure a successful exploitation of the computational power offered by multicomputers it is essential to obtain a clear understanding of the performance capabilities of their interconnection networks under various system configurations. Current multicomputers have widely employed the torus as their underlying network topology for efficient interprocessor communication. The efficiency of a large-scale multicomputer is critically dependent on the performance of its interconnection network.
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