[Paraview] XDMF/HDF5 reader memory usage

[Tobias Brandvik]

Sure, bug now submitted:

http://paraview.org/Bug/view.php?id=10702

Thanks,
Tobias

On Tue, May 11, 2010 at 1:59 PM, Robert Maynard
<robert.maynard at kitware.com> wrote:
> Hi Tobias,
> Could you please submit a bug
> at http://paraview.org/Bug/bug_report_page.php for the memory leak in
> XMDF/HDF5 files.
>
> On Tue, May 11, 2010 at 8:19 AM, Tobias Brandvik <tbrandvik at gmail.com>
> wrote:
>>
>> After doing some more digging, it appears this problem is not only
>> related to temporal collections, but all XDMF/HDF5 files with spatial
>> collections. If repeatedly open and close a file containing a spatial
>> collection, Paraview's memory usage gradually increases until it hangs
>> my machine. I observe this in both 3.6 and 3.8 RC2.
>>
>> Cheers,
>> Tobias
>>
>> ---
>> Tobias Brandvik
>> PhD Student
>> Whittle Laboratory, University of Cambridge
>> 1 JJ Thomson Avenue
>> Cambridge CB3 0DY, UK
>>
>>
>> On Mon, May 3, 2010 at 12:06 PM, Tobias Brandvik <tbrandvik at gmail.com>
>> wrote:
>> > Hi all,
>> >
>> > I'm experiencing some strange behaviour with the XDMF reader when
>> > trying to create an animation of the data contained in a set of HDF5
>> > files. My approach is as follows:
>> >
>> > 1. One XDMF file which is a temporal collection containing links to a
>> > list of other XDMF files
>> > 2. One XDMF file for each time step (linked to by the XDMF file
>> > above), each of which is a spatial collection of several 2D structured
>> > grids. The data for the grids is contained in HDF5 files (also one for
>> > each time step).
>> >
>> > When I open the file with the temporal collection in Paraview, the
>> > data shows up as a temporal collection as expected. I can step back
>> > and forth in time and everything seems to work just fine. However, as
>> > I load in more time steps (by stepping forward in time), Paraview's
>> > memory usage keeps increasing. It seems like it is not freeing the
>> > memory associated with the old time step when reading in a new one.
>> >
>> > To illustrate this problem, I've uploaded a collection of XDMF and
>> > HDF5 files to the following location:
>> >
>> > http://www2.eng.cam.ac.uk/~tb302/xdmf_example.tar.gz
>> >
>> > There are 10 time steps in the collection. The data set is very small,
>> > but it should still show the problem (I could easily generate larger
>> > data sets if necessary). I get the same behaviour in Paraview 3.6 and
>> > 3.8 on both Centos 5.3 (64 bit) and Mac OS X 10.5.
>> >
>> > Any help would be greatly appreciated.
>> >
>> > Best wishes,
>> > Tobias
>> >
>> > ---
>> > Tobias Brandvik
>> > PhD Student
>> > Whittle Laboratory, University of Cambridge
>> > 1 JJ Thomson Avenue
>> > Cambridge CB3 0DY, UK
>> >
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>
>
> --
> Robert Maynard
>