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Design and analysis of high performance multistage interconnection networks

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2 Author(s)
S. K. Bhogavilli ; Dept. of Electr. & Comput. Eng., Nevada Univ., Las Vegas, NV, USA ; H. Abu-Amara

Small switching elements are the key components of multistage interconnection networks (MINs) used in multiprocessors and in high speed switching fabrics. Clock design for synchronous MINs is an important issue. The existing models assume that the clock period consists of two parts. The control messages are transferred between switching stages during the first part, and the actual data transfer takes place during the second part. We propose a new control design for single queue MINs that reduces the duration of the clock period by making use of output buffers and acknowledgments. The reduction in the clock period comes from the addition of two-unit output buffers, introducing a sophisticated hardware control mechanism, and sacrificing the FIFO feature. We develop an analytical model to compare its performance with the existing designs reported in the literature. We validate our model with extensive simulation studies

Published in:

IEEE Transactions on Computers  (Volume:46 ,  Issue: 1 )