German Maglione

• University of Castilla-La Mancha

The Dragonfly topology is currently one of the most popular network topologies in high-performance parallel systems. The interconnection networks of many of these systems are built from components based on the InfiniBand specification. However, due to some constraints in this specification, the available versions of the InfiniBand network controlle...

In high-performance computing systems, the interference among applications that share network resources is one of the major causes of performance degradation and increase variability among different executions of the same application. In this article, we propose a virtual partitioning scheme for dragonfly networks that combines a job-allocation pol...

The Dragonfly topology is currently one of the most popular network topologies in high-performance parallel systems. The interconnection networks of many of these systems are built from components based on the InfiniBand specification. However, due to some constraints in this specification, the available versions of the InfiniBand network controlle...

Component reliability and performance pose a great challenge for interconnection networks. Future technology scaling such as transistor integration capacity in VLSI design will result in higher device degradation and manufacture variability. As a consequence, changes in the network arise, often rendering irregular topologies. This paper proposes a...

The number of endnodes in high-performance computing (HPC) and Datacenter (DC) systems is constantly increasing. Hence, it is crucial to minimize the impact of network congestion to guarantee a suitable network performance. InfiniBand is a prominent interconnect technology that allows implementing efficient topologies and routing algorithms, as wel...

The interconnection network architecture is crucial for High-Performance Computing (HPC) clusters, since it must meet the increasing computing demands of applications. Current trends in the design of these networks are based on increasing link speed, while reducing latency and number of components in order to lower the cost. The InfiniBand Architec...

Dragonfly topologies are gathering great interest as one of the most promising interconnect options for High-Performance Computing systems. Dragonflies contain physical cycles that may lead to traffic deadlocks unless the routing algorithm prevents them properly. Previous topology-aware algorithms are difficult to implement, or even unfeasible, in...