test program for using TMVA BDT in the MC reweighting procedure Tested with rel CMSSW_10_4_0
compile with make
Data and MC files point to the the soft links in eos (you can change to your needs). In this example the files for different "parity" are the same and parity selections are defined in the program.
Be aware that TMVA Multithread is active and the requested #treads is 40!