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Global misrouting policies in two-level hierarchical networks

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10.1145/2482759.2482763
 
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hdl:2117/23136

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Garcia, Marina
Vallejo, Enrique
Beivide Palacio, Julio Ramón
Odriozola, Miguel
Camarero Coterillo, Cristobal
Valero Cortés, MateoMés informacióMés informacióMés informació
Labarta Mancho, Jesús JoséMés informacióMés informacióMés informació
Rodríguez, Germán
Document typeConference report
Defense date2013
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
Dragonfly networks are composed of interconnected groups of routers. Adaptive routing allows packets to be forwarded minimally or non-minimally adapting to the traffic conditions in the network. While minimal routing sends traffic directly between groups, non-minimal routing employs an intermediate group to balance network load. A random selection of this intermediate group (denoted as RRG) typically implies an extra local hop in the source group, what increases average path length and can reduce performance. In this paper we identify different policies for the selection of such intermediate group and explore their performance. Interestingly, simulation results show that an eager policy (denoted as CRG) that selects the intermediate group only between those directly connected to the ongoing router causes starvation in some network nodes. On the contrary, the best performance is obtained by a by a \mixed mode" policy (denoted as MM) that adds a local hop when the packet has moved away from the source router.
CitationGarcia, M. [et al.]. Global misrouting policies in two-level hierarchical networks. A: International Workshop on Interconnection Network Architectures: On-Chip, Multi-Chip. "Proceedings of the 2013 Interconnection Network Architecture: On-Chip, Multi-Chip". Berlin: 2013, p. 13-16. 
URIhttp://hdl.handle.net/2117/23136
DOI10.1145/2482759.2482763
ISBN9781450317849
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  • CAP - Grup de Computació d'Altes Prestacions - Ponències/Comunicacions de congressos [784]
  • Departament d'Arquitectura de Computadors - Ponències/Comunicacions de congressos [2.055]
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