Mar 21 – 27, 2009
Europe/Prague timezone

Analysis of internal network requirements for the distributed Nordic Tier-1

Mar 24, 2009, 6:10 PM
Club B (Prague)

Club B


Prague Congress Centre 5. května 65, 140 00 Prague 4, Czech Republic
oral Grid Middleware and Networking Technologies Hardware and Computing Fabrics


Dr Josva Kleist (Nordic Data Grid Facility)


The Tier-1 facility operated by the Nordic DataGrid Facility (NDGF) differs significantly from other Tier-1s in several aspects: It is not located at one or a few locations but instead distributed throughout the Nordic, it is not under the governance of a single organisation but but is instead build from resources under the control of a number of different national organisations. Being physically distributed makes the design and implementation of the networking infrastructure a challenge. NDGF has its own internal OPN connecting the sites participating in the distributed Tier-1. To assess the suitability of the network design and the capacity of the links, we present a model of the internal bandwidth needs for the NDGF Tier-1 and its associated Tier-2 sites. The model takes the different type of workloads into account and can handle different kinds of data management strategies. It has already been used to dimension the internal network structure of NDGF. We also compare the model with real life data measurements.
Presentation type (oral | poster) oral

Primary authors

Dr Gerd Behrmann (Nordic DataGrid Facility) Dr Josva Kleist (Nordic Data Grid Facility) Mr Lars Fischer (NORDUnet) Ms Mette Gamst (University of Copenhagen) Dr Michael Grønager (Nordic DataGrid Facility)

Presentation materials