Your delete line is
Delete(Animationscene1)
but your variable is actually called AnimationScene1 (camel-case lettering).
Python is case-sensitive, so that's why you are getting the error you are
showing.
That said, we do two things to loop over everything. We can Delete() every
object, but that can be tedious in complicated pipelines. Alternatively, we
have a driver script that executes pvpython on a trace script and passes in a
number to indicate which file should be rendered. Our trace script then dumps a
single PNG image and we stitch them together to make a movie afterwards using
ImageMagick. Since each image is rendered in an entirely new instance of
pvpython, there are no memory issues. An example driver script is below. We've
also made our driver script parallel so it splits the range of data files into
chunks for each processor, and then pvpython is called multiple times in
parallel to render the files.
Tim
import subprocess
start = 0
end = 100
stride = 1
for n in range(start, end + 1, stride):
print "Working on file: ", n
subprocess.call(['/data4/pv4.1Install-OS/bin/pvpython', 'jicf_trace.py', '%i' %
(n)])
----- Original Message -----
From: "Tim De Coster" <tim91decos...@gmail.com>
To: paraview@paraview.org
Sent: Tuesday, January 19, 2016 10:03:01 AM
Subject: [Paraview] Memory overload and I don't know what to delete (despite
looking in the archives)
Hi all,
I am stuck with a problem regarding ParaView (version 4.0.1 64-bit), running on
Ubuntu 14.04. It seems that when I run a python script, my memory gets
overloaded. I looked already in the archives and it seems that I need to delete
some data using the command Delete(). When I try this however, I get error
messages saying that the things I want to delete are not possible
( File "./RunParaviewMovieMaker.py", line 89, in create_movie
Delete(Animationscene1)
NameError: global name 'Animationscene1' is not defined
*** Error in `/usr/bin/python': corrupted double-linked list:
0x0000000002b52ca0 ***
).
Let me first explain my problem in more detail:
I have a lot of data that I generated with another script (about 3TB and still
increasing), but now I need to convert these data into movies. When I run my
loop over different folders, the first few movies are generated in less than
30s each, but then gradually the time per movie starts increasing and my memory
gets overloaded. The script I am running is (which I simply got from using the
trace call for python in ParaView):
#!/usr/bin/python
from paraview.simple import *
def main():
some huge for-loop generating names of maps where the .vtk files are stored. In
this for loop I use the command:
create_movie(filename3)
def create_movie(mapname):
vtkfolder = '.'
number_of_frames = 2000
vtknames = []
for i in range (0, number_of_frames - 1):
vtknames.append('{1}/{2}/VoltParaviewMovie{0:0=4d}.vtk'.format(i, vtkfolder,
mapname))
VoltParaviewMovie = LegacyVTKReader(FileNames = vtknames)
AnimationScene1 = GetAnimationScene()
AnimationScene1 = GetAnimationScene()
AnimationScene1.EndTime = 1999.0
AnimationScene1.PlayMode = 'Snap To TimeSteps'
AnimationScene1.EndTime = 1999.0
AnimationScene1.PlayMode = 'Snap To TimeSteps'
RenderView1 = GetRenderView()
a1_Voltage_PVLookupTable = GetLookupTableForArray( "Voltage", 1,
RGBPoints=[-85.52999877929688, 0.23, 0.299, 0.754, 50.0, 0.706, 0.016, 0.15],
VectorMode='Magnitude', NanColor=[0.25, 0.0, 0.0], ColorSpace='Diverging',
ScalarRangeInitialized=1.0, AllowDuplicateScalars=1 )
a1_Voltage_PiecewiseFunction = CreatePiecewiseFunction( Points=[0.0, 0.0, 0.5,
0.0, 1.0, 1.0, 0.5, 0.0] )
DataRepresentation1 = Show()
DataRepresentation1.EdgeColor = [0.0, 0.0, 0.5000076295109483]
DataRepresentation1.SelectionPointFieldDataArrayName = 'Voltage'
DataRepresentation1.ScalarOpacityFunction = a1_Voltage_PiecewiseFunction
DataRepresentation1.ColorArrayName = ('POINT_DATA', 'Voltage')
DataRepresentation1.ScalarOpacityUnitDistance = 7.108580809929175
DataRepresentation1.LookupTable = a1_Voltage_PVLookupTable
DataRepresentation1.Representation = 'Slice'
DataRepresentation1.ScaleFactor = 0.0
RenderView1.CameraFocalPoint = [63.5, 63.5, 0.0]
RenderView1.CameraPosition = [63.5, 63.5, 10000.0]
RenderView1.InteractionMode = '2D'
RenderView1.CenterOfRotation = [63.5, 63.5, 0.0]
a1_Voltage_PVLookupTable.ScalarOpacityFunction = a1_Voltage_PiecewiseFunction
RenderView1.CameraPosition = [63.5, 63.5, 346.97045256124744]
RenderView1.CameraClippingRange = [343.50074803563496, 352.1750093496662]
RenderView1.CameraParallelScale = 89.80256121069154
newmapname = ''
fragments = mapname.split('.')
for fragment in fragments:
newmapname +=fragment
WriteAnimation('{0}/{1}.avi'.format(vtkfolder, newmapname), Magnification=1,
Quality=2, FrameRate=15.000000)
Render()
print('{0} has been produced.'.format(newmapname))
if __name__ == '__main__':
main()
Would any one of you be able to point out to me what I am doing wrong? Or which
objects/structures I should delete (in the archives the problem always appeared
to be that a writer needed to be deleted, but I don't have such an object) such
that I basically start over each time I create a new movie and hence don't use
that much memory?
With kind regards,
Tim
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_______________________________________________
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the ParaView Wiki at:
http://paraview.org/Wiki/ParaView
Search the list archives at: http://markmail.org/search/?q=ParaView
Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview
