[ROOT] output file size

From: Michael Gold (gold@higgs.phys.unm.edu)
Date: Tue Mar 11 2003 - 02:10:25 MET


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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