[Paraview] [paraview] out of memory

[Utkarsh Ayachit]

Dxy,

ParaView has certain overhead when a new source/filter is created. It
will need some more profiling, but creating 500+ readers would indeed
push things closer to that limit. ParaView/VTK typically uses
composite datasets/multiblock datasets for handling multiple parts of
the same dataset. Here's a "Script" for the Python programmable filter
that can open all the PLY files as a single multblock dataset.

# 0. Create the "Programmable Source" from the Sources menu.
======================================================
# 1. Set the Output DataSet Type to "vtkMultiBlockDataSet".
======================================================
#  2. Set as the "Script"
======================================================
output = self.GetOutput()
cc = 0
for i in range(1, 538):
  filename = "/tmp/data/%03d.ply" % i
  reader = vtkPLYReader()
  reader.SetFileName(filename)
  reader.Update()
  output.SetBlock(cc, reader.GetOutputDataObject(0))
  del reader
  cc = cc + 1
======================================================

Utkarsh


On Wed, May 20, 2015 at 10:37 AM, Utkarsh Ayachit
<utkarsh.ayachit at kitware.com> wrote:
> Not sure what exactly are you seeing. If you have a sample dataset to
> share, that'll make it easier.
>
> Thanks
> Utkarsh
>
> On Wed, May 20, 2015 at 10:32 AM, dxy <dingxyan at 163.com> wrote:
>> Thanks for your reply. I tried as you said, it doesn't work. I use a
>> computer of 16G of memory, it can render out. Then I use 538 ply files, they
>> are 11.9MB altogether, but when renderd, it will use 6G memory, either the
>> display lists turned on or off. Why it is this?
>> Thanks for your help.
>>
>> dxy
>>
>> At 2015-05-20 20:22:42, "Utkarsh Ayachit" <utkarsh.ayachit at kitware.com>
>> wrote:
>>>Try turning of display lists. In ParaView4.1 it was setting named
>>>"Immediate mode rendering" under the Settings dialog. You'll need to
>>>enable the checkbox.
>>>
>>>Utkarsh
>>>
>>>On Wed, May 20, 2015 at 4:34 AM, 丁晓燕 <dingxyan at 163.com> wrote:
>>>> Dear,
>>>>         I use the paraview of Version4.1, and the memory of my computer
>>>> is
>>>> 4G. When I load about 190 ply files at the same time, there will be
>>>> errors
>>>> about out of memory, but it runs normally when the number of the file is
>>>> less than 190.
>>>>
>>>> The error message as shown below:
>>>> ERROR: In
>>>>
>>>> C:\DBD\pvs-x32\paraview\src\paraview\VTK\Rendering\OpenGL\vtkOpenGLCoincidentTopologyResolutionPainter.cxx,
>>>> line 176
>>>> vtkOpenGLCoincidentTopologyResolutionPainter (7A9A9938): failed after
>>>> RenderShiftZBuffer 1 OpenGL errors detected
>>>>   0 : (1285) Out of memory
>>>> ERROR: In
>>>>
>>>> C:\DBD\pvs-x32\paraview\src\paraview\VTK\Rendering\OpenGL\vtkOpenGLDisplayListPainter.cxx,
>>>> line 188
>>>> vtkOpenGLDisplayListPainter (7AAE3358): failed after RenderInternal 1
>>>> OpenGL
>>>> errors detected
>>>>   0 : (1285) Out of memory
>>>>
>>>>         Thanks for your help.
>>>> Yours truly,
>>>> dxy
>>>>
>>
>>
>>
>>
>>
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