[Pavel Rodin]

Hello everyone,

I started working with OpenFOAM not so long ago, but I already know a little about PyFoam.
Generally, I used 'pyFoamRunParameterVariation' utility and all was fine. But then I tried to use 'pyFoamPVSnapshot' utility and faced a problem, that I can't solve myself.

Here is some configuration info:
OS: Ubuntu 16.04.3 LTS
OpenFOAM-2.4.0
ParaView 4.1.0
PyFoam version: 0.6.7 (installed with pip)

I used the utility in the following way:

pyFoamPVSnapshot.py --latest-time --state-file=default.pvsm damBreak

The 'default.pvsm' file was prepared earlier through ParaView.

And here is what I got:

Executing PVSnapshot with pvpython trough a proxy-script
Warning in /tmp/pyFoamPVSnapshot_8h6vxh3u.py : Setting decomposed type to auto : Decomposed/Reconstruced correctly set. Nothing changed
PyFoam WARNING on line 110 of file /usr/local/lib/python3.5/dist-packages/PyFoam/Paraview/ServermanagerWrapper.py : Can't find expected plugin 'libPOpenFOAMReaderPlugin' assuming that correct reader is compiled in. Wish me luck Traceback (most recent call last):
  File "/tmp/pyFoamPVSnapshot_8h6vxh3u.py", line 4, in <module>
    PVSnapshot()
  File "/usr/local/lib/python3.5/dist-packages/PyFoam/Applications/PVSnapshot.py", line 51, in __init__
    **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/PyFoam/Applications/PyFoamApplication.py", line 436, in __init__
    result=self.run()
  File "/usr/local/lib/python3.5/dist-packages/PyFoam/Applications/PVSnapshot.py", line 493, in run
    views=pvs.GetViews()
AttributeError: 'module' object has no attribute 'GetViews'
Inconsistency detected by ld.so: dl-close.c: 811: _dl_close: Assertion `map->l_init_called' failed!
Error: Return code  127 executing /tmp/pyFoamPVSnapshot_8h6vxh3u.py

I tried to investigate these 'warnings' and came to the conclusion, that they are not critical (cause I've seen them in some presentations).
The line starting with "Inconsistency detected by ld.so.." also doesn't important. I ran 'pyFoamPVSnapshot' utility on another virtual machine with Ubuntu 14.04 (OF2.4.0, PV4.1.0, PyFoam 0.6.8.1) and got almost the same error except this line. But the error "AttributeError: 'module' object has no attribute 'GetViews'" still exist.

Any help would be appreciated.


Regards, Pavel

[Pavel Rodin]

<slowpoke mode deactivated>

Okay.. 'PVSnapshot.py' contains these lines:

import paraview.simple as pvs
...
views=pvs.GetViews()

but module 'simple.py' located in "~/OpenFOAM/ThirdParty-2.4.0/ParaView-4.1.0/Wrapping/Python/paraview/simple.py" really doesn't have 'GetViews' method. And I'm getting this AttributeError.

So the problem is ParaView version? And there is nothing I can do about it?

[robob]

Have you set a Text source with the content %(casename)s ?

[Pavel Rodin]

Originally Posted by robob

Have you set a Text source with the content %(casename)s ?

Don't quite understand what is about. I did not perform any additional actions after installation of PyFoam. Just played a bit with PYTHONPATH and set it following way:

export PYTHONPATH=$ParaView_DIR/lib/paraview-4.1/

But looks like it doesn't helped (and did anything at all).

[gschaider]

Originally Posted by Pavel Rodin

<slowpoke mode deactivated>

Okay.. 'PVSnapshot.py' contains these lines:

but module 'simple.py' located in "~/OpenFOAM/ThirdParty-2.4.0/ParaView-4.1.0/Wrapping/Python/paraview/simple.py" really doesn't have 'GetViews' method. And I'm getting this AttributeError.

So the problem is ParaView version? And there is nothing I can do about it?

Problem is that the API of Paraview was constantly changing. Especially before going to 5.0. I checked: the .GetViews()-line was written in March 2015. The latest Paraview version at the time was 4.3.1. So it might be possible that I worked with that or 4.2 but not with 4.1. I will have a look in the office whether I still have a 4.1 to see if that is a problem.

But since it was written that line works for me (currently use 5.4) so upgrading paraview to a more recent version might fix your problem (and you won't have to rely on me having time to look at that)

[Pavel Rodin]

Originally Posted by gschaider

Problem is that the API of Paraview was constantly changing. Especially before going to 5.0. I checked: the .GetViews()-line was written in March 2015. The latest Paraview version at the time was 4.3.1. So it might be possible that I worked with that or 4.2 but not with 4.1. I will have a look in the office whether I still have a 4.1 to see if that is a problem.

But since it was written that line works for me (currently use 5.4) so upgrading paraview to a more recent version might fix your problem (and you won't have to rely on me having time to look at that)

Thanks for info, Bernhard.
Actually I was thinking about it too. I'll try another version of ParaView.

[Pavel Rodin]

So.. I tried to run 'PVSnapshot.py' utility with another version of ParaView (4.3.1) and here is what I got:

Executing PVSnapshot with pvpython trough a proxy-script
/home/prodin/Distrib/ParaView-4.3.1/lib/paraview-4.3/pvpython: error while loading shared libraries: libvtkPVServerManagerApplication-pv4.3.so.1: cannot open shared object file: No such file or directory
Error: Return code  127 executing /tmp/pyFoamPVSnapshot_pvtj9dn9.py

But the file named 'libvtkPVServerManagerApplication-pv4.3.so.1' definitely exists.
Is this some kind of permissions issue?

[Pavel Rodin]

I'm getting the same error with ParaView's version 5.2.0.
Seems I can't use ParaView as a portable program in that way (i.e. just changing the PATH variable).
But if I install Paraview using apt-get (currently of version 5.0.1), then I can make a screenshot through PVSnapshot utility.
Now I'm curious how to run the utility on a few case variations (e.g. after 'pyFoamRunParameterVariation.py' script execution).