inria-00175747, version 1
Impact of NUMA Effects on High-Speed Networking with Multi-Opteron Machines
Stéphanie Moreaud 1, 2Brice Goglin
a, 1, 2
PDCS (2007)
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.
- a – INRIA
- 1 : Laboratoire Bordelais de Recherche en Informatique (LaBRI)
- CNRS : UMR5800 – Université Sciences et Technologies - Bordeaux I – École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB) – Université Victor Segalen - Bordeaux II
- 2 : RUNTIME (INRIA Bordeaux - Sud-Ouest)
- INRIA – CNRS : UMR5800 – Université Sciences et Technologies - Bordeaux I – École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB)
- Collaboration : Grid'5000
- Domaine : Informatique/Système d'exploitation
- Mots-clés : High-Speed Networks – NUMA – Opteron – Hypertransport – Placement – Performance
- inria-00175747, version 1
- http://hal.inria.fr/inria-00175747
- oai:hal.inria.fr:inria-00175747
- Contributeur : Brice Goglin
- Soumis le : Lundi 1 Octobre 2007, 10:12:17
- Dernière modification le : Lundi 23 Avril 2012, 16:44:13
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