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Problem and Solutions in Data Analysis

These solutions will be updated in the LodeStar manual periodically.

Problems related to LodeStar

Problems related to ROOT

  • 在setup LodeStar 大环境后,通常我们需要运行当地package中的cmt/setup.sh 来建立本地环境。这导致同名的DataModel类定义被root辨识,和打开的文件中用DataModel类名作为tree名的tree发生同名冲突。输入DataModel的类名后会自动的被辨识成类名(变成蓝色显示),从而无法引用tree。
  • 解决方案:不要运行当地package中的cmt/setup.sh

Problems related to python

unable to open txt file in C++, when the file name is transfered by python:
  • ADratioSvc = Algtask.createSvc("KM2ACharCalSvc/myCharSvc");
  • ADratioSvc.property("InputFileName").set("KM2AADC-20200220.txt ")
  • reason: There is a space in char: "KM2AADC-20200220.txt "

When run the ananlysis job, the error log shows at the beginning:
  • Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
  • Missing FileEntry for LHRecHeader.h
  • requested to autoload type LHRecHeader
  • Solution: go to LHRecEvent pacakge, remove all dictionary files and re-compile

Problems related to Data

OutputSvc problem:

  • Algtask:OutputSvc.initialize DEBUG: Output stream list:
  • Algtask:OutputSvc.initialize DEBUG: Path: /Event/LHCaliEvent ==> File name: test2.root
  • * Break * segmentation violation
  • Not clear for the reason, but in constructor, if allocate memory for HitsE : " HitsE =new TClonesArray (...)" , the crash disappear.

Why when register the datamodel to outputSvc, the constructor runs twice and destructor runs once
  • Algtask:OutputSvc.initialize DEBUG: Path: /Event/RawEvent ==> File name: test2.root
  • In RawEvent ()
  • In RawEvent ()
  • In ~RawEvent()
  • Algtask:OutputSvc.initialize DEBUG: Successfully initialized.

download problem


Using the example of event reconstruction :LHKm2aReco ,and source ./bashTools/downloadPackages.h ./bashTools/Packages.txt find a problem that enter SVN password ,it stoped.and reminding you stored your password unencrypted?(yes/no)ATTENTION! Your password for authentication realm:svn: OPTIONS of '': authorization failed: Could not authenticate to server: rejected Basic challenge (

solution: enter your home directory and edit .subversion/server and setting the value of the 'store-plaintext-passwords' option to "yes" .inline 113,156 .Be sure to write to the top without Spaces


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Topic revision: r15 - 2020-09-08 - ZhuChengguang
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