The Nordic Data Grid Facility, NDGF, is a collaboration between the Nordic contries (Denmark, Finland, Norway, Sweden).
NDGF has the purpose to help Nordic researchers to create and to participate in computational challenges of scope and size unreachable for the national research groups alone.
To qualify for support research groups should form a virtual organisation, a VO.
The VO provides compute resources for sharing and NDGF operates a grid interface for the sharing of these resources.
Currently, several Nordic resources are accessible with ARC and gLite grid-middleware, some sites with both.
NDGF serves the Nordic High Energy Physics community - the ALICE, ATLAS and CMS Virtual Organizations - through the operation of the Nordic Tier-1, which together with the Tier-0, CERN, and the other 10 Tier-1s collects, stores and processes the data produced by the Large Hadron Collider Experiment at CERN.