@inproceedings {23935,
	title = {A New Fault-Tolerant Routing Methodology for KNS Topologies},
	journal = {2nd IEEE International Workshop on High-Performance Interconnection Networks in the Exascale and Big-Data Era (HiPINEB)},
	year = {2016},
	month = {03/2016},
	pages = {1-8},
	publisher = {IEEE},
	abstract = {Exascale computing systems are being built with thousands of nodes. A key component of these systems is the interconnection network. The high number of components significantly increases the probability of failure. If failures occur in the interconnection network, they may isolate a large fraction of the machine. For this reason, an efficient fault-tolerant mechanism is needed to keep the system interconnected, even in the presence of faults. A topology recently proposed for these large systems is the hybrid KNS family that provides good performance and connectivity at a reduced hardware cost. This paper present a fault-tolerant routing methodology for the KNS topology that degrades performance gracefully in the presence of faults and tolerates a reasonably large number of faults without disabling any healthy node. In order to tolerate network failures, the methodology uses a simple mechanism: for some sourcedestination pairs, only if necessary, packets are forwarded to the destination node through a set of intermediate nodes (without being ejected from the network) which allow avoiding faults. The evaluation results shows that the methodology tolerates a large number of faults. Furthermore, the methodology offers a gracious performance degradation. For instance, performance degrades only 1\% for a 2D-network with 1024 nodes and 1\% faulty links.},
	isbn = {978-1-5090-2121-5},
	doi = {10.1109/HIPINEB.2016.9},
	author = {Pe{\~n}aranda, Roberto and Ernst Gunnar {Gran} and Skeie, Tor and Maria Engracia {G{\'o}mez} and Lopez, Pedro},
	editor = {Pedro J. {Garcia} and Escudero-Sahuquillo, Jes{\'u}s}
}
@article {Simula.simula.2620,
	title = {Efficient and Cost-Effective Hybrid Congestion Control for HPC Interconnection Networks},
	journal = {IEEE Transactions on Parallel and Distributed Systems},
	volume = {26},
	number = {pp},
	year = {2015},
	pages = {107-119},
	publisher = {IEEE},
	abstract = {Interconnection networks are key components in High-Performance Computing (HPC) systems, their performance having a strong influence on the overall system one. However, at high load, congestion and its negative effects (e.g. Head-of-line blocking) threaten the performance of the network, and so the one of the entire system. Congestion control (CC) is crucial to ensure an efficient utilization of the interconnection network during congestion situations. As one major trend is to reduce the effective wiring in interconnection networks to reduce cost and power consumption, the network will operate very close to its capacity. Thus, congestion control becomes essential. Existing CC techniques can be divided into two general approaches. One is to throttle traffic injection at the sources that contribute to congestion, and the other is to isolate the congested traffic in specially designated resources. However, both approaches have different, but non-overlapping weaknesses: injection throttling techniques have a slow reaction against congestion, while isolating traffic in special resources may lead the system to run out of those resources. In this paper we propose EcoCC, a new Efficient and Cost-Effective CC technique, that combines injection throttling and congested-flow isolation to minimize their respective drawbacks and maximize overall system performance. This new strategy is suitable for current commercial switch architectures, where it could be implemented without requiring significant complexity. Experimental results, using simulations under synthetic and real tracebased traffic patterns, show that this technique improves by up to 55\% over some of the most successful congestion control techniques.},
	doi = {10.1109/TPDS.2014.2307851},
	author = {Escudero-Sahuquillo, Jes{\'u}s and Ernst Gunnar {Gran} and Pedro J. {Garcia} and Flich, Jos{\'e} and Skeie, Tor and Lysne, Olav and Francisco Jos{\'e} {Quiles} and Duato, Jose}
}
@inproceedings {Simula.SC.502,
	title = {Experimental and Analytical Analysis of Bonded Joint for Marine Applications},
	journal = {Proceedings of the II International Conference on Computational Methods in Marine Engineering - MARINE 2007},
	year = {2007},
	month = {June},
	publisher = {International Center of Numerical Methods in Engineering (CIMNE)},
	type = {Conference},
	abstract = {Weight-critical marine structures, such as high-speed craft, are often made of high-strength aluminium. To improve the performance of such structures, there is a tendency to seeking lighter weight materials, especially in parts of the structure where weight-saving is particularly beneficial, such as in the superstructure. Such leight-weight materials can be fibre-reinforced composites. When joining structures made of composites to components of steel or aluminium, welding, which is the traditional joining method in marine applications, is no longer an option. Instead, adhesive bonding becomes an attractive joining method. In the present work the strength of different bonded double-lap steel-composite joints, with a variety of overlap lengths and environmental conditions, has been measured experimentally. These experimental results have been compared with predictions using an elastic-plastic theory recently derived by the present authors, as well as linear models. It is demonstrated that predictions using the new nonlinear theory agree well with the experimentally obtained results, while linear analysis is inappropriate for modeling such joints when loaded to failure.},
	isbn = {978-84-96736-19-1},
	author = {Osnes, Harald and McGeorge, Dag},
	editor = {O{\~n}ate, E. and Pedro J. {Garcia} and Bergan, P. and Kvamsdal, T.}
}
