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Políticas de encaminamiento tolerantes a fallos

Authors: Zarza, Gonzalo;

Políticas de encaminamiento tolerantes a fallos

Abstract

El uso intensivo y prolongado de computadores de altas prestaciones para ejecutar aplicaciones computacionalmente intensivas, sumado al elevado número de elementos que los componen, incrementan drásticamente la probabilidad de ocurrencia de fallos durante su funcionamiento. El objetivo del trabajo es resolver el problema de tolerancia a fallos para redes de interconexión de altas prestaciones, partiendo del diseño de polí­ticas de encaminamiento tolerantes a fallos. Buscamos resolver una determinada cantidad de fallos de enlaces y nodos, considerando sus factores de impacto y probabilidad de aparición. Para ello aprovechamos la redundancia de caminos de comunicación existentes, partiendo desde enfoques de encaminamiento adaptativos capaces de cumplir con las cuatro fases de la tolerancia a fallos: detección del error, contención del daño, recuperación del error, y tratamiento del fallo y continuidad del servicio. La experimentación muestra una degradación de prestaciones menor al 5%. En el futuro, se tratará la pérdida de información en tránsito. L’ús intensiu i perllongat de computadors d’altes prestacions per a executar aplicacions computacionalment intensives, sumat a l’elevat nombre d’elements que els componen, incrementen dràsticament la probabilitat d’ocurrència de fallades durant el seu funcionament. L’objectiu del treball és resoldre el problema de tolerància a fallades per a xarxes d’interconnexió d’altes prestacions, partint del disseny de polítiques d’encaminament tolerants a fallades. Busquem resoldre una determinada quantitat de fallades d’enllaços i nodes, considerant els seus factors d’impacte, probabilitat d’aparició. Per a això s’aprofita la redundància de camins de comunicació existents, partint des d’enfocaments d’encaminament adaptatius capaços de complir amb les quatre fases de la tolerància a fallades: detecció de l’error, contenció del dany, recuperació de l’error, i tractament de la fallada i continuïtat del servei. L’experimentació mostra una degradació de prestacions menor al 5%. En el futur, es tractarà la pèrdua d’informació en trànsit. The intensive and continous use of high-performance computers to execute computationally intensive applications, coupled with the large number of elements that make them up, dramatically increase the likelihood of failures during their operation. This works focuses on solving the problem of fault tolerance for high speed interconnection networks by means of designing fault tolerant routing policies. The goal is to solve a determined number of link and node failures, considering its impact factor and occurrence probability. To acomplish this task we take advantage of the communication path redundancy, through adaptive routing approaches that fulfils with the four phases of the fault tolerance: error detection, damage confinement and assessment, error recovery, fault treatment and continuous service. The experiments shows performance’s degradation under 5%. In the future, we’ll treat the loose of information in transit.

Country
Spain
Keywords

Xarxes elèctriques d'interconnexió, 68 - Indústries, oficis i comerç d'articles acabats. Tecnologia cibernètica i automàtica, Ordinadors -- Fiabilitat

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green