[Paraview] Paraview/Python script speed extracting data

[Berk Geveci]

Hi Christian,

Did you identify where the performance bottleneck occurs? Does it perform
well if you take out the writing or Fetch?

Best,
-berk

On Fri, Feb 20, 2015 at 8:05 AM, Thomas, Christian <c.thomas at imperial.ac.uk>
wrote:

> Hi
>
> I'm writing a python script that uses several paraview filters. I then
> extract data from the final filter for further analysis in python. However,
> I'm having a problem with the speed of the data extraction (can take
> several minutes). I have tried writing to a file (createwriter) and then
> reading the file. I have also tried servermanager.Fetch() and GetPoints…
> Although I am able to get data with both methods, they are both very slow.
> I was wondering if there was anything obvious in my paraview/python script
> that was slowing the process or if anyone has a suggestion at how I may
> speed things up.
> (I realise this could just be down to the size of my initial input, for
> small data files Mesh - 15MB, solution - 50MB).
>
> The script is below. Any suggestions would be greatly appreciated.
>
> Regards
> Christian
>
>
>
>         TBR = TAUMeshReader( FileName=Dir+'Mesh' )
>         TBR.SurfaceMeshOnly = 0
>         TBR.SolutionFileName = Dir+'solution'
>         MB = MergeBlocks(Input = TBR)
>         T1 = Transform(Input = MB)
>         T1.Transform.Rotate = [-float(Rot/2.0), 0.0, Sweep]
>         ISO = IsoVolume(Input = T1)
>         ISO.ThresholdRange = [MIN_Tot_Pre, BLE_Tot_Pre]
>         ISO.InputScalars = ['POINTS','total_pressure']
>         SL = Slice(Input = T1)
>         SL.SliceType="Plane"
>         SL.SliceOffsetValues = n
>         SL.SliceType.Origin = Inboard
>         SL.SliceType.Normal = Normal
>         Con = Contour(Input = SL)
>         Con.PointMergeMethod = "Uniform Binning"
>         Con.ContourBy = ['POINTS', 'total_pressure']
>         Con.Isosurfaces = [BLE_Tot_Pre]
>         Pass = PassArrays(Con)
>         Pass.PointDataArrays = ['wall_distance']
>         h=CreateWriter(Dir+'Edge.csv',Pass)
>         h.FieldAssociation = "Points"
>         h.Precision = 15
>         h.UpdatePipeline()
>
>         ….read Edge.csv file for further analysis
>
>
>
>
>
>
>
>
>
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