[vtkusers] VTK + PyQt5 + VirtualGL not working

[amdelaossa]

Hello Felipe,

I have compiled VTK 8.1.1 with python2 and Qt4 and the problem persists. 
No idea of what else can be done.

Is anyone else interested in getting this fixed? 
I can imagine that using VTK through VirtualGL to access large data sets stored in computing clusters is not a rare task...

Greetings,
Alberto



> On 15. Jun 2018, at 10:58, Felipe Bordeu <felipebordeu at gmail.com> wrote:
> 
> Hi everyone,
> 
> I can confirm this problem. I have a python 2.7 + qt4 + vtk working app on a remote server with vnc for the visualisation. But with python 3 + qt4 + vtk the same error message appears. If I test the vtk installation alone (not in a embedded qt window) I can create a visualisation in a window.
> 
> 
> 
> 
> Le jeu. 14 juin 2018 à 10:00, amdelaossa <adelaossa at gmail.com <mailto:adelaossa at gmail.com>> a écrit :
> Dear VTK developers,
> 
> We have an issue with our 3D visualization software which uses VTK, through Python bindings.
> Although VTK has been working with no problems with VirtualGL, 
> recently we have implemented a GUI for our visualization routines. 
> The problem appeared when we tried to use this GUI remotely through VirtualGL.
> 
> We get the following error message:
> 
> `
> [VGL] NOTICE: Automatically setting VGL_CLIENT environment variable to
> [VGL]    131.169.206.101, the IP address of your SSH client.
> ERROR: In /data/netapp/fla/plasma/software-max/source/VTK-git/Rendering/OpenGL2/vtkOpenGLRenderWindow.cxx, line 725
> vtkXOpenGLRenderWindow (0x2ef7b00): GLEW could not be initialized.
> 
> Segmentation fault
> `
> 
> The problem also appear with a much more simple program that we took from the VTK examples:
> 
> 
> This python script runs smoothly in a local computer, but it fails when using vglrun (VirtualGL). 
> 
> This is a critical issue for us: 
> Our simulation data is stored in remote clusters for parallel computing, and therefore, 
> it is a must to use VirtualGL to visualize the data with VTK without needing to transfer large amounts of data to our personal computers.
> 
> Any help or information is much appreciated.
> Thanks!
> 
> Best regards,
> Alberto
> 
> Alberto Martinez de la Ossa
> Postdoc Uni. Hamburg - DESY-FLA
>  
> Deutsches Elektronen-Synchrotron DESY
> Notkestraße 85, 22607 Hamburg
> Office: 01E/O2.514
> Phone: +49 40 8998 1569
> Email: alberto.martinez.de.la.ossa at desy.de <mailto:delaossa at mail.desy.de>
> 
> 
> 
> 
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