NDLI: An Efficient All-to-all Communication Algorithm for Mesh/Torus Networks

Content Provider	IEEE Xplore Digital Library
Author	Yazaki, S. Takaue, H. Ajima, Y. Shimizu, T. Ishihata, H.
Copyright Year	2012
Abstract	An efficient all-to-all communication algorithm for torus and mesh networks, A2AT, was proposed. A2AT schedules message sending sequence so that all links are fully used by exploiting function of concurrent message transfer in the node. By using A2AT, the hop count of messages equals the maximum number of messages sharing a link in their routes for all message transfers. A2AT can therefore maintain synchronization without the need for phasing operation such as an MPI barrier. When the VOQ which is an ideal configuration for A2AT was used, communication times for mesh/torus network obtained by A2AT were roughly 1.20 and 1.09 times higher, on average, than those of the ideal times. When the networks had the minimum number of virtual channels and a small buffer, assuming a practical network, A2AT was able to reduce communication times by 12.5% and 36.0% compared with those of the conventional algorithm. When two controllers are used, A2AT reduced 28.2% and 55.7% communication time with those by A2AND on 15x15x15 (=3,375 nodes) mesh and torus networks respectively (18.6% and 44.8% in average). A2AT also reduced 15.1% and 41.9% of communication time with those by A2AND on the same mesh and torus networks respectively (14.4% and 37.5% in average) when six controllers are used.
Starting Page	277
Ending Page	284
File Size	3229265
Page Count	8
File Format	PDF
ISBN	9781467316316
DOI	10.1109/ISPA.2012.44
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-10
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mesh networks Bandwidth Communication algorithm Routing Electronic mail All-to-all Mathematical model Synchronization Equations Mesh/Torus
Content Type	Text
Resource Type	Article

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