Hi, If I submit jobs with no destination to Dirac sometimes they go to CLOUD.CERN-PROD.ch which seems to send them to vcycle at Manchester. The interesting thing is these are 'Hello World' and typically take ~12secs executing. The ones going to CLOUD.CERN-PROD.ch take more like 1m 20sec - many times longer. Presumably this is some startup overhead that one wouldn't notice in a real job? See http://pprc.qmul.ac.uk/~lloyd/gridpp/gridtests/uktest.html for a summary. Cheers +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Prof Steve Lloyd Head of School of Physics and Astronomy Queen Mary University of London, Mile End Road, London E1 4NS, UK E-mail: s.l.lloyd@qmul.ac.uk Phone: +44-(0)207-882-6967 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++