[PyFoam] stuck: Text file busy

cbcoutinho · July 1, 2015, 06:15

Hello Foamers,

I have successfully used pyFoam in the past to plot residuals during runs, but now that I have upgraded to OF2.4.x there seems to be a compatibility issue. PyFoam just hangs at the first timestep. Running the case without pyFoam does not produce the error, so I don't think it has to do with my /system/ files, but I have attached them nonetheless. The command I am running is:

Code:

decomposePar -force -cellDist
mpiexec -np 4 renumberMesh -overwrite -parallel
pyFoamPlotRunner.py mpiexec -np 4 simpleFoam -parallel

And the resulting error message is:

Code:

/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.4.x                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
Build  : 2.4.x-664271ec09a7
Exec   : simpleFoam -parallel
Date   : Jun 30 2015
Time   : 20:42:07
Host   : "linux-8o2d.site"
PID    : 8243
Case   : /home/chris/Dropbox/REDstack/spacerCFD/spacerCFD_2D/spacer2d-mapped
nProcs : 4
Slaves :
3
(
"linux-8o2d.site.8244"
"linux-8o2d.site.8245"
"linux-8o2d.site.8246"
)

Pstream initialized with:
floatTransfer      : 0
nProcsSimpleSum    : 0
commsType          : nonBlocking
polling iterations : 0
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Allowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create mesh for time = 0

Reading field p

Reading field U

Reading/calculating face flux field phi

Selecting incompressible transport model Newtonian
Selecting RAS turbulence model laminar
No finite volume options present


SIMPLE: convergence criteria
field p	 tolerance 1e-05
field U	 tolerance 1e-05


Starting time loop

Time = 1
Traceback (most recent call last):
  File "/usr/bin/pyFoamPlotRunner.py", line 4, in <module>
    __import__('pkg_resources').run_script('PyFoam==0.6.4', 'pyFoamPlotRunner.py')
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 534, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 1438, in run_script
    execfile(script_filename, namespace, namespace)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/EGG-INFO/scripts/pyFoamPlotRunner.py", line 5, in <module>
    PlotRunner()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/Applications/PlotRunner.py", line 59, in __init__
    **kwargs)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/Applications/PyFoamApplication.py", line 356, in __init__
    result=self.run()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/Applications/PlotRunner.py", line 142, in run
    run.start()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/Execution/BasicRunner.py", line 363, in start
    self.lineHandle(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/Execution/GnuplotRunner.py", line 179, in lineHandle
    GnuplotCommon.lineHandle(self,line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/Execution/AnalyzedCommon.py", line 84, in lineHandle
    self.analyzer.analyzeLine(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/LogAnalysis/FoamLogAnalyzer.py", line 138, in analyzeLine
    self.analyzers[nm].doAnalysis(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/LogAnalysis/TimeLineAnalyzer.py", line 43, in doAnalysis
    self.notifyNewTime(m)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/LogAnalysis/TimeLineAnalyzer.py", line 32, in notifyNewTime
    self.notify(float(m.group(2)))
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/LogAnalysis/LogLineAnalyzer.py", line 65, in notify
    f(*data)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/LogAnalysis/FoamLogAnalyzer.py", line 84, in setTime
    listener.timeChanged()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/Execution/StepAnalyzedCommon.py", line 39, in timeChanged
    self.picklePlots()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.4-py2.7.egg/PyFoam/Execution/AnalyzedCommon.py", line 334, in picklePlots
    move(pickleFile+".tmp",pickleFile)
  File "/usr/lib64/python2.7/shutil.py", line 303, in move
    os.unlink(src)
OSError: [Errno 26] Text file busy: './Gnuplotting.analyzed/pickledPlots.tmp'

cbcoutinho · July 6, 2015, 05:57

Howdy Foamers,

I have not been able to solve my problem yet, but I did some further reading and came to two possible sources of error.

-- First off, it looks like I had not installed PyFoam since I switch from python 2 to python 3. Oops.
-- Second, I was not correctly operating PyFoam in parallel correctly. I should have actually used the command

Code:

pyFoamPlotRunner.py --procnr=4 simpleFoam

Changing these two options made it so the tutorial cases run correctly, but my case is still not able to start. Would anyone be able to help me with my persistent problem regarding PyFoam?

Traction · October 19, 2016, 08:22

Hey foamers,

I just finished the installation of PyFoam and unfortunately have equivalent problems when running the PyFoamRunner.
I am doing a single core simulation of OF´s damBreak tutorial. OF writes the first two time directories and stucks shortly after this.

My PyFoamRunner.py output following:

Code:

Starting time loop

Courant Number mean: 0 max: 0
Interface Courant Number mean: 0 max: 0
deltaT = 0.00119048
Time = 0.00119048
Traceback (most recent call last):
  File "/usr/bin/pyFoamRunner.py", line 5, in <module>
    pkg_resources.run_script('PyFoam==0.6.6', 'pyFoamRunner.py')
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 492, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 1350, in run_script
    execfile(script_filename, namespace, namespace)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/EGG-INFO/scripts/pyFoamRunner.py", line 5, in <module>
    Runner()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Applications/Runner.py", line 66, in __init__
    **kwargs)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Applications/PyFoamApplication.py", line 426, in __init__
    result=self.run()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Applications/Runner.py", line 154, in run
    run.start()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/BasicRunner.py", line 363, in start
    self.lineHandle(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/AnalyzedRunner.py", line 49, in lineHandle
    StepAnalyzedCommon.lineHandle(self,line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/AnalyzedCommon.py", line 156, in lineHandle
    self.analyzer.analyzeLine(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/FoamLogAnalyzer.py", line 139, in analyzeLine
    self.analyzers[nm].doAnalysis(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/TimeLineAnalyzer.py", line 43, in doAnalysis
    self.notifyNewTime(m)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/TimeLineAnalyzer.py", line 32, in notifyNewTime
    self.notify(float(m.group(2)))
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/LogLineAnalyzer.py", line 65, in notify
    f(*data)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/FoamLogAnalyzer.py", line 85, in setTime
    listener.timeChanged()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/StepAnalyzedCommon.py", line 45, in timeChanged
    self.picklePlots()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/AnalyzedCommon.py", line 468, in picklePlots
    move(pickleFile+".tmp",pickleFile)
  File "/usr/lib64/python2.7/shutil.py", line 302, in move
    os.unlink(src)
OSError: [Errno 26] Text file busy: './PyFoamRunner.interFoam.analyzed/pickledPlots.tmp'

For the sake of completeness the output of pyFoamVersion.py

Code:

Machine info: Linux | localhost.localdomain | 3.19.8-100.fc20.x86_64 | #1 SMP Tue May 12 17:08:50 UTC 2015 | x86_64 | x86_64

Python version: 2.7.5 (default, Apr 10 2015, 08:09:05)
[GCC 4.8.3 20140911 (Red Hat 4.8.3-7)]

Python executable: /bin/python

Python 2.7 is one development platform for PyFoam (along with Python 3)
PYTHONPATH: /usr/lib/python2.7/site-packages:/usr/lib64/python2.7/site-packages/openmpi:/usr/lib/python2.7/site-packages:

Location of this utility: /usr/bin/pyFoamVersion.py

PyFoam WARNING on line 201 of file /usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/FoamInformation.py : Basedir /home/foamy/foam for fork extend does not exist or is not a directory
PyFoam WARNING on line 201 of file /usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/FoamInformation.py : Basedir /home/foamy/OpenFOAM for fork openfoamplus does not exist or is not a directory
Version 3.0.x (reported as number 3.0 )Fork openfoam of the installed 1 versions:
openfoam-3.0.x : /opt/OpenFOAM/OpenFOAM-3.0.x

pyFoam-Version: 0.6.6

Path where PyFoam was found (PyFoam.__path__) is ['/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam']

Configuration search path: [('file', '/etc/pyFoam/pyfoamrc'), ('directory', '/etc/pyFoam/pyfoamrc.d'), ('file', '/home/foamy/.pyFoam/pyfoamrc'), ('directory', '/home/foamy/.pyFoam/pyfoamrc.d')]
Configuration files (used): []

Installed libraries:
cython : No Not used. Maybe will by used later to spped up parts of PyFoam
cProfile : Yes
docutils : No Not necessary. Needed for RestructuredText to HTML conversion
Gnuplot : No Not a problem. Version from ThirdParty is used
hotshot : Yes
line_profiler : No Not a problem. Can't profile using this library
ipdb : No Not necessary. Only makes debugging more comfortable
IPython : No Not necessary. But the interactive shell may be more comfortable
matplotlib : No Only Gnuplot-plotting possible
mercurial : No Not a problem. Used for experimental case handling
pytest : No Only needed for running the unit-tests (developers only)
numpy : Yes version: 1.11.2
openpyxl : No Not a problem. Only used for exporting pandas-data to Excel-files (advanced). If xlsxwriter is installed it will handle this (xlsxwriter is recommended anyway)
xlsxwriter : No Not a problem. Only used for exporting pandas-data to XLSX-files (advanced). If openpyxl is installed then this module can handle that
pandas : No Not a problem. Only used for handling of advanced data-handling
ply : No Not a problem. Version from ThirdParty is used
profile : Yes
psyco : No Not a problem. Acceleration not possible
PyQt4 : Yes version: 4.8.5
PyQt4.Qwt5 : No Only an alternate plotting back-end
scipy : No Not yet used. Possibly use signal-fitting etc
Tkinter : No Not a problem. Used for the old version of DisplayBlockmesh and some matplotlib-implementations
twisted : No Not yet used. Possibly reimplement MetaServer with it
vtk : No Not a problem. Only used for some utilities
xlwt : No Not a problem. Only used for exporting pandas-data to Excel-files
xlrd : No Not a problem. Only used for importing Excel-files to pandas-data
requests : No Not a problem. Currently only needed for the blink(1)-support

Library locations
cProfile : /usr/lib64/python2.7/cProfile.pyc
hotshot : /usr/lib64/python2.7/hotshot/__init__.pyc
numpy : /usr/lib64/python2.7/site-packages/numpy/__init__.pyc
profile : /usr/lib64/python2.7/profile.pyc
PyQt4 : /usr/lib64/python2.7/site-packages/PyQt4/__init__.pyc

Checking additional envirnoment variables

Checking for PYFOAM_DIR : Location of the PyFoam-installation. Not strictly necessary
PYFOAM_DIR missing from environment

Checking for PYFOAM_SITE_DIR : Location of non-PyFoam-disctributions script. Set and used by some Foam-distributions
PYFOAM_SITE_DIR missing from environment

Has anyone experienced anything similar or an idea on how to get the PyFoamRunner running successful ?

gschaider · October 20, 2016, 07:44

Quote:

Originally Posted by Traction

Hey foamers,

I just finished the installation of PyFoam and unfortunately have equivalent problems when running the PyFoamRunner.
I am doing a single core simulation of OF´s damBreak tutorial. OF writes the first two time directories and stucks shortly after this.

My PyFoamRunner.py output following:

Code:

Starting time loop

Courant Number mean: 0 max: 0
Interface Courant Number mean: 0 max: 0
deltaT = 0.00119048
Time = 0.00119048
Traceback (most recent call last):
  File "/usr/bin/pyFoamRunner.py", line 5, in <module>
    pkg_resources.run_script('PyFoam==0.6.6', 'pyFoamRunner.py')
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 492, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 1350, in run_script
    execfile(script_filename, namespace, namespace)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/EGG-INFO/scripts/pyFoamRunner.py", line 5, in <module>
    Runner()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Applications/Runner.py", line 66, in __init__
    **kwargs)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Applications/PyFoamApplication.py", line 426, in __init__
    result=self.run()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Applications/Runner.py", line 154, in run
    run.start()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/BasicRunner.py", line 363, in start
    self.lineHandle(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/AnalyzedRunner.py", line 49, in lineHandle
    StepAnalyzedCommon.lineHandle(self,line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/AnalyzedCommon.py", line 156, in lineHandle
    self.analyzer.analyzeLine(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/FoamLogAnalyzer.py", line 139, in analyzeLine
    self.analyzers[nm].doAnalysis(line)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/TimeLineAnalyzer.py", line 43, in doAnalysis
    self.notifyNewTime(m)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/TimeLineAnalyzer.py", line 32, in notifyNewTime
    self.notify(float(m.group(2)))
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/LogLineAnalyzer.py", line 65, in notify
    f(*data)
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/LogAnalysis/FoamLogAnalyzer.py", line 85, in setTime
    listener.timeChanged()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/StepAnalyzedCommon.py", line 45, in timeChanged
    self.picklePlots()
  File "/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/Execution/AnalyzedCommon.py", line 468, in picklePlots
    move(pickleFile+".tmp",pickleFile)
  File "/usr/lib64/python2.7/shutil.py", line 302, in move
    os.unlink(src)
OSError: [Errno 26] Text file busy: './PyFoamRunner.interFoam.analyzed/pickledPlots.tmp'

For the sake of completeness the output of pyFoamVersion.py

Code:

Machine info: Linux | localhost.localdomain | 3.19.8-100.fc20.x86_64 | #1 SMP Tue May 12 17:08:50 UTC 2015 | x86_64 | x86_64

Python version: 2.7.5 (default, Apr 10 2015, 08:09:05)
[GCC 4.8.3 20140911 (Red Hat 4.8.3-7)]

Python executable: /bin/python

Python 2.7 is one development platform for PyFoam (along with Python 3)
PYTHONPATH: /usr/lib/python2.7/site-packages:/usr/lib64/python2.7/site-packages/openmpi:/usr/lib/python2.7/site-packages:

Location of this utility: /usr/bin/pyFoamVersion.py

PyFoam WARNING on line 201 of file /usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/FoamInformation.py : Basedir /home/foamy/foam for fork extend does not exist or is not a directory
PyFoam WARNING on line 201 of file /usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam/FoamInformation.py : Basedir /home/foamy/OpenFOAM for fork openfoamplus does not exist or is not a directory
Version 3.0.x (reported as number 3.0 )Fork openfoam of the installed 1 versions:
openfoam-3.0.x : /opt/OpenFOAM/OpenFOAM-3.0.x

pyFoam-Version: 0.6.6

Path where PyFoam was found (PyFoam.__path__) is ['/usr/lib/python2.7/site-packages/PyFoam-0.6.6-py2.7.egg/PyFoam']

Configuration search path: [('file', '/etc/pyFoam/pyfoamrc'), ('directory', '/etc/pyFoam/pyfoamrc.d'), ('file', '/home/foamy/.pyFoam/pyfoamrc'), ('directory', '/home/foamy/.pyFoam/pyfoamrc.d')]
Configuration files (used): []

Installed libraries:
cython : No Not used. Maybe will by used later to spped up parts of PyFoam
cProfile : Yes
docutils : No Not necessary. Needed for RestructuredText to HTML conversion
Gnuplot : No Not a problem. Version from ThirdParty is used
hotshot : Yes
line_profiler : No Not a problem. Can't profile using this library
ipdb : No Not necessary. Only makes debugging more comfortable
IPython : No Not necessary. But the interactive shell may be more comfortable
matplotlib : No Only Gnuplot-plotting possible
mercurial : No Not a problem. Used for experimental case handling
pytest : No Only needed for running the unit-tests (developers only)
numpy : Yes version: 1.11.2
openpyxl : No Not a problem. Only used for exporting pandas-data to Excel-files (advanced). If xlsxwriter is installed it will handle this (xlsxwriter is recommended anyway)
xlsxwriter : No Not a problem. Only used for exporting pandas-data to XLSX-files (advanced). If openpyxl is installed then this module can handle that
pandas : No Not a problem. Only used for handling of advanced data-handling
ply : No Not a problem. Version from ThirdParty is used
profile : Yes
psyco : No Not a problem. Acceleration not possible
PyQt4 : Yes version: 4.8.5
PyQt4.Qwt5 : No Only an alternate plotting back-end
scipy : No Not yet used. Possibly use signal-fitting etc
Tkinter : No Not a problem. Used for the old version of DisplayBlockmesh and some matplotlib-implementations
twisted : No Not yet used. Possibly reimplement MetaServer with it
vtk : No Not a problem. Only used for some utilities
xlwt : No Not a problem. Only used for exporting pandas-data to Excel-files
xlrd : No Not a problem. Only used for importing Excel-files to pandas-data
requests : No Not a problem. Currently only needed for the blink(1)-support

Library locations
cProfile : /usr/lib64/python2.7/cProfile.pyc
hotshot : /usr/lib64/python2.7/hotshot/__init__.pyc
numpy : /usr/lib64/python2.7/site-packages/numpy/__init__.pyc
profile : /usr/lib64/python2.7/profile.pyc
PyQt4 : /usr/lib64/python2.7/site-packages/PyQt4/__init__.pyc

Checking additional envirnoment variables

Checking for PYFOAM_DIR : Location of the PyFoam-installation. Not strictly necessary
PYFOAM_DIR missing from environment

Checking for PYFOAM_SITE_DIR : Location of non-PyFoam-disctributions script. Set and used by some Foam-distributions
PYFOAM_SITE_DIR missing from environment

Has anyone experienced anything similar or an idea on how to get the PyFoamRunner running successful ?

Hm. That is a strange one. The problem seems to be that the file ./PyFoamRunner.interFoam.analyzed/pickledPlots.tmp can not be removed because some other process is accessing it. Is the file there? Could you try "lsof ./PyFoamRunner.interFoam.analyzed/pickledPlots.tmp" and see if it gives any output? (If it doesn't then this unfortunately no proof that there was no other process at the time of moving). The file is released immediately before moving it. It COULD be a race condition in the operating system and that is hard to fix

Traction · October 21, 2016, 06:06

Hello Mr. Gschaider,

thank you for your hint. I executed the lsof command as you suggested. The output shows that the file is in use during runtime (by my own user to be precise).

I use OpenFOAM in a virtual machine which contains some shared folders to make the simulation and result files available on other machines during runtime. I assume that these shared folders are monitored the whole time to provide a rapid availability on all systems which seems to be the main problem.

When I move the case directory to a local folder (not shared) and start the simulation there are no more errors and the pyFoamRunner works properly !

I´am looking forward to explore your tools.

July 6, 2015, 05:57		#2
cbcoutinho New Member Chris Coutinho Join Date: Jan 2015 Location: Netherlands Posts: 28 Rep Power: 11	Howdy Foamers, I have not been able to solve my problem yet, but I did some further reading and came to two possible sources of error. -- First off, it looks like I had not installed PyFoam since I switch from python 2 to python 3. Oops. -- Second, I was not correctly operating PyFoam in parallel correctly. I should have actually used the command Code: pyFoamPlotRunner.py --procnr=4 simpleFoam Changing these two options made it so the tutorial cases run correctly, but my case is still not able to start. Would anyone be able to help me with my persistent problem regarding PyFoam?

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October 21, 2016, 06:06		#5
Traction Member Join Date: Mar 2014 Posts: 39 Rep Power: 12	Hello Mr. Gschaider, thank you for your hint. I executed the lsof command as you suggested. The output shows that the file is in use during runtime (by my own user to be precise). I use OpenFOAM in a virtual machine which contains some shared folders to make the simulation and result files available on other machines during runtime. I assume that these shared folders are monitored the whole time to provide a rapid availability on all systems which seems to be the main problem. When I move the case directory to a local folder (not shared) and start the simulation there are no more errors and the pyFoamRunner works properly ! I´am looking forward to explore your tools.