Impact of NUMA Effects on High-Speed Networking with Multi-Opteron Machines - Inria - Institut national de recherche en sciences et technologies du numérique
Communication Dans Un Congrès Année : 2007

Impact of NUMA Effects on High-Speed Networking with Multi-Opteron Machines

Résumé

The ever-growing level of parallelism within the multi-core and multi-processor nodes in clusters leads to the generalization of distributed memory banks and busses with non-uniform access costs. These NUMA effects have been mostly studied in the context of threads scheduling and are known to have an influence on high-performance networking in clusters. We present an evaluation of their impact on communication performance in multi-Opteron machines. NUMA effects exhibit a strong and asymmetric impact on high-bandwidth communications while the impact on latency remains low. We then describe the implementation of an automatic NUMA-aware placement strategy which achieves as good communication performance as a careful manual placement, and thus ensures performance portability by gathering hardware topology information and placing communicating tasks accordingly.
Fichier principal
Vignette du fichier
PDCS07.pdf (98.45 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

inria-00175747 , version 1 (01-10-2007)

Identifiants

  • HAL Id : inria-00175747 , version 1

Citer

Stéphanie Moreaud, Brice Goglin. Impact of NUMA Effects on High-Speed Networking with Multi-Opteron Machines. PDCS, Nov 2007, Cambridge, United States. ⟨inria-00175747⟩
281 Consultations
1667 Téléchargements

Partager

More