The Cost of Adaptivity and Virtual Lanes in a Wormhole Router | Zendy

Kazuhiro Aoyama | Zendy; Andrew A. Chien | Zendy

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The Cost of Adaptivity and Virtual Lanes in a Wormhole Router

Author(s) -

Kazuhiro Aoyama,

Andrew A. Chien

Publication year - 1995

Publication title -

vlsi design

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.123

H-Index - 24

eISSN - 1065-514X

pISSN - 1026-7123

DOI - 10.1155/1995/49382

Subject(s) - router , deadlock , computer science , virtual channel , wormhole , one armed router , routing (electronic design automation) , computer network , crossbar switch , provisioning , channel (broadcasting) , distributed computing , telecommunications , physics , quantum mechanics

We examine the cost in router complexity of adaptivity and virtual lanes in wormhole routers, using f-flat adaptiverouters (based on a generalization of planar-adaptive routing) which include routers with a range of routingfreedom. Our studies show that adaptivity is expensive because it requires additional virtual channels and muchlarger crossbar switches for both adaptivity and deadlock prevention. Increases of 50 to 100% in channel utilizationare required to justify additional degrees of routing freedom

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