Hello, ROOT leaves without saying anything when I try to write a TTree in a TFile, and the file has only few bytes (and can not be opened of course). I have a global tree: TTree TREE("T","TREE"); In a function, I fill it, then: TFile *myfile=new TFile(name_ntuple, "RECREATE"); TREE.Write(); myfile->Close(); This is the way I always used, and it always worked, but this time I have a big Tree and this doesn't work, I don't know why. Its size is less than the limit 2Gb, I think it should be around 80Mb with 100.000 entries (I have already a similar file of 8Mb with 10.000 entries that I succeeded to write). Have you an idea of what goes wrong ? Thank you. Matthieu Lechowski LAL Orsay lxplus ROOTSYS=/afs/cern.ch/sw/root/v3.05.05/rh73_gcc2952/root
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