The ShARC HPC cluster was decommissioned on the 30th of November 2023 at 17:00. It is no longer possible for users to access that cluster.


Qt is a widget toolkit for creating graphical user interfaces as well as cross-platform applications that run on various software and hardware platforms such as Linux, Windows, macOS, Android or embedded systems with little or no change in the underlying codebase while still being a native application with native capabilities and speed.

About Qt5 on ShARC

Qt5 on ShARC works in both normal qrshx sessions and accelerated qsh-vis sessions and is installed to provide functionality to other downstream software which uses Qt5 as a dependency e.g. Paraview and ParaFOAM (OpenFOAM.)

Installation Notes

Qt 5.12 was installed using GCC 8.2 with the script /usr/local/packages/apps/Qt5/5.12/gcc-8.2-cmake-3.17.1/install_Qt5.sge

Note that this compilation will take significant resources and several hours to finish which is why this installation script uses a SGE submission.


Qt 5.12 was tested with the helloworld application which can be found at


The module file is on the system at /usr/local/modulefiles/apps/Qt5/5.12/gcc-8.2-cmake-3.17.1.

This module file defines two key environment variables to configure the correct fonts via QT_QPA_FONTDIR and sets the correct temp directory for lock files with XDG_RUNTIME_DIR. The correction for the XDG_RUNTIME_DIR location may become unnecessary in the future as this may be added to a scheduler prolog script.