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A Comment on “A Necessary and Sufficient Condition for Deadlock-Free Adaptive Routing in Wormhole Networks”

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2 Author(s)
Verbeek, F. ; Inst. for Comput. & Inf. Sci., Radboud Univ., Nijmegen, Netherlands ; Schmaltz, J.

The purpose of this comment is to show that Duato's condition for deadlock freedom is only sufficient and not necessary. We propose a fix to keep the condition necessary. The issue is subtle but essential: in a wormhole network worms necessarily do not intersect.

Published in:

Parallel and Distributed Systems, IEEE Transactions on  (Volume:22 ,  Issue: 10 )