Hi Michael, The automatic file swap was only implemented in 3.03/09 It cannot work with earlier versions Rene Brun Michael Gold wrote: > > I am using root version, > Version 3.03/07 5 August 2002 > > For this version there is no TTree::SetMaxTreeSize or GetMaxTreeSize. > Instead I am using the TChain::Merge method. > The program indeed is opening multiple files. > At the start of the program, I get the printout: > >>Merge: Switching to new file: results/topAna_1.root at entry: 260715 > >>Merge: Switching to new file: results/topAna_2.root at entry: 509747 > So root is calculating what files it will open based on the tree size > and the number of events in the input chain. > > However, sometime after opening the _1 file, I start to get a slew of errors, > one > for every branch element in my tree: > > >> Error in <TBasket::Create>: Cannot allocate 28338 bytes for ID = eleA.BCPx > Title = topAna > > Does anyone understand this error and what I am doing wrong? > > Thanks, > Michael Gold
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