[vtk-developers] Offscreen rendering OpenGL, linux, leaks memory

Sankhesh Jhaveri sankhesh.jhaveri at kitware.com
Mon Jun 13 12:32:20 EDT 2016


Awesome Dan.

How did you end up debugging?

​Sankhesh



On Mon, Jun 13, 2016 at 11:23 AM, Dan Lipsa <dan.lipsa at kitware.com> wrote:

> I merged in a fix for this
> https://gitlab.kitware.com/vtk/vtk/merge_requests/1556
>
>
> On Fri, Jun 10, 2016 at 3:54 PM, Dan Lipsa <dan.lipsa at kitware.com> wrote:
>
>> We tried the test program on two platforms:
>>
>> 1. OpenGL vendor string: VMware, Inc.
>> OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.6, 256 bits)
>> OpenGL version string: 2.1 Mesa 11.0.7
>>
>> Here the leak is about 70MB for 10000. Here our collaborator run the
>> equivalent python program.
>> He connected to a linux machine using TigerVNC.
>>
>> 2. OpenGL vendor string: NVIDIA Corporation
>> OpenGL renderer string: Quadro K2000/PCIe/SSE2
>> OpenGL core profile version string: 4.2.0 NVIDIA 304.131
>> OpenGL core profile shading language version string: 4.20 NVIDIA via Cg
>> compiler
>>
>> Here the leak is about 20 MB for 10000 iterations.
>>
>> On Fri, Jun 10, 2016 at 9:40 AM, Dan Lipsa <dan.lipsa at kitware.com> wrote:
>>
>>> Thanks Dave. This is a great idea. I will test this and report back.
>>>
>>> Beyond that, the debugging tools are failing us and I don't see many
>>>> other options than to start cutting out bits of the code to locate the
>>>> problem. See if the leak goes away when, e.g.
>>>> vtkOpenGLRenderer::DeviceRender is bypassed and go from there.
>>>>
>>>
>>> Indeed. Thanks for the pointer.
>>>
>>> Dan
>>>
>>>
>>
>
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