A Case Study on Implementing Virtual 5D Torus Networks Using Network Components of Lower Dimensionality

Andújar, Francisco J.; Villar, Juan A.; Sánchez, José Luis; Alfaro, Francisco J.; Duato, J.; Hoger, Froning

doi:10.1109/hipineb.2017.7

Cited by 1 publication

(3 citation statements)

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confidence: 85%

“…In those previous works, we evaluated the nDT torus topology by simulation, assuming a simple card architecture to model the network without taking into account a specific interconnection technology. This special issue paper extends the study presented in Andújar et al that used a more accurate model based on a specific commercial communication hardware. Specifically, we have developed a model based on the EXTOLL technology.…”

Section: Introductionmentioning

confidence: 99%

“…It features state‐of‐the‐art techniques like virtual output queuing, virtual channels, and link‐level retransmission. Since EXTOLL cards have six communication ports, the common approach is to build a 3D torus network, but using our topology, we propose in Andújar et al to build a 5DT torus network in order to increase the global network performance using the same number of interconnection cards.…”

Section: Introductionmentioning

confidence: 99%

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Constructing virtual 5‐dimensional tori out of lower‐dimensional network cards

Andújar

Villar

Sánchez

et al. 2017

Concurrency and Computation

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In the Top500 and Graph500 lists of the last years, some of the most powerful systems implement a torus topology to interconnect the millions of computing nodes they include. Some of these torus networks are of five or six dimensions, which implies an additional difficulty as the node degree increases. In previous works, we proposed and evaluated the nD Twin (nDT) torus topology to virtually increase the dimensions a torus is able to implement. We showed that this new topology reduces the distances between nodes, increasing, therefore, global network performance. In this work, we present how to build a 5DT torus network using a specific commercial 6-port network card (EXTOLL card) to interconnect those nodes. We show, using the same number of cards, that the performance of the 5DT torus network we are able to implement using our proposal is higher than the performance of the 3D torus network for the same number of compute nodes.

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supporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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