Abstract
A new deadlock-free partially adaptive routing algorithm is proposed for 2 ? dimensional (2D) tori with only two virtual channels. The deadlock avoidance technique is presented based on a new turn model for 2D tori. In order to avoid cyclic channel dependencies completely, we propose the new odd-even turn model for 2D tori. The new model is an improved algorithm of the original turn model, and sets some constraints for some special turns. As far as we know, there is no existing algorithm for deadlock-free partially adaptive routing in 2D tori using only two virtual channels in the literature up to now. Sufficient simulation results are presented to demonstrate the effectiveness of the proposed algorithm by comparing with several previous methods.
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