Message: Re: QT Multithreading crash Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

Feedback Re: QT Multithreading crash 

Forum: Multithreading
Re: Warning QT Multithreading crash (Steven Walton)
Re: More Re: QT Multithreading crash (Steven Walton)
Date: 03 Mar, 2017
From: Andrea Dotti <Andrea Dotti>

Hello, what you describe seems not related to Geant4, but instead to the Qt stack on your system. Your tests seems to indicate an issue with some low-level component of the system (maybe the graphic driver?)

I do use myself a Ubuntu machine and I do not have problems with MT and Qt. Since few years we have a fully functional MT/Qt integration.

I can suggest you to: Test 0. It is best to use Qt5. Qt4 should work with G4, but I recommend the former Test 1. Verify Qt is updated on your system (apt update && apt upgrade) Test 2. Verify Qt standalone application (not G4) are working correctly. If not the problem is in Qt itself. e.g. yum install qtbase5-examples Test 3. Evaluate if you want to go through installing the latest Qt manually. In such a case you will need to re-compile from scratch G4 **after** having re-run cmake pointing Qt at the newly installed version. Read very carefully https://geant4.web.cern.ch/geant4/UserDocumentation/UsersGuides/InstallationGuide/html/ch02s03.html regarding the CMAKE_PREFIX_PATH variable. After cmake step check that in CMakeCache.txt file Qt related variables are pointing to the new installed Qt and not to your old system wide installation.

Andrea

 Add Message Add Message
to: "Re: QT Multithreading crash"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews