Problem and Solutions in Data Analysis

These solutions will be updated in the LodeStar manual periodically.

Problems related to LodeStar

Problems related to ROOT

使用LodeStar的dataModel存储的root文件,使用root交互界面打开后,无法通过Show或者Scan等命令查看event的内容
  • 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.

LhSandBox

LhZhanShan

Comments


Edit | Attach | Watch | Print version | History: r15 < r14 < r13 < r12 < r11 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r12 - 2020-06-01 - ZhuChengguang
 
  • Edit
  • Attach
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2022 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback