The NorduGrid architecture and tools

P. Eerola, B. Kónya, O. Smirnova Particle Physics, Institute of Physics, Lund University, Box 118, 22100 Lund, Sweden T. Ekelöf, M. Ellert Department of Radiation Sciences, Uppsala University, Box 535, 75121 Uppsala, Sweden J. R. Hansen, J. L. Nielsen, A. Wäänänen Niels Bohr Institutet for Astronomi, Fysik og Geofysik, Blegdamsvej 17, Dk-2100 Copenhagen Ø, Denmark A. Konstantinov University of Oslo, Department of Physics, P. O. Box 1048, Blindern, 0316 Oslo, Norway and Vilnius University, Institute of Material Science and Applied Research, Saul_etekio al. 9, Vilnius 2040, Lithuania F. Ould-Saada University of Oslo, Department of Physics, P. O. Box 1048, Blindern, 0316 Oslo, Norway