RT info:eu-repo/semantics/article
T1 Providing quality of service in omni-path networks
A1 Cano Cano, Javier
A1 Andújar Muñoz, Francisco José
A1 Alfaro Cortés, Francisco J.
A1 Sánchez, José L.
A1 Mora, Gaspar
AB New hierarchical crossbar switch architectures, such as Omni-Path (OPA) and Cray X2, have appeared to improve packet latency, reduce overall cost and increase fault tolerance of the high-performance interconnection networks in supercomputing and data center systems. These and other interconnect technologies (Infiniband or 40/100 Gigabit Ethernet) include support to provide quality of service (QoS) to the applications. In this paper, we show how this QoS support can be enabled to achieve bandwidth and/or latency differentiation in Omni-Path interconnection networks, as a representative case of hierarchical switches. To do that, three different table-based schedulers are used. We include the description of these schedulers and a comparative study by using the results obtained when we evaluate them with Hiperion, a simulation tool that implements an OPA model.
PB Springer
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/74174
UL https://uvadoc.uva.es/handle/10324/74174
LA eng
NO The Journal of Supercomputing, 78, 12310–12343 (2022)
NO Producción Científica
DS UVaDOC
RD 05-feb-2025