[QGIS-Developer] Uno strano blocco in Model Designer in batch processing

[Sebastian Gutwein]

Sadly this is a known problem that we have not been able to find a solution
to. https://github.com/qgis/QGIS/issues/53806
It does not seem to matter the size of the raster or vector layer.
Anecdotally- I have not noticed it with the most recent version (3.40.3) of
QGIS yet.


On Thu, Jun 5, 2025 at 9:42 AM Lorenzo Moretti via QGIS-Developer <
qgis-developer at lists.osgeo.org> wrote:

> Hi
>
> I have developed several models in Model Designer and I am using them in
> QGIS in different platforms. I am having a really strange problem
> especially in the Windows version of QGIS.
> My model is very simple:
>  in INPUT there is a raster file and a vector file.The working sequence is
> this:
> - the vector file is converted to a raster file with an extension equal to
> the INPUT raster file;
> - in the converted raster all nodata values are converted to the value
> zero (with FILLNodata);
> - output is the converted raster file with an integer value. The Data Type
> is Int16.
>
> In the model there are 5 algorithms with 2 files in INPUT and 1 file in
> OUTPUT.
> In a few seconds I have the result.
>
> All this, however, is done in Batch Processing and in INPUT all the vector
> files in a directory are taken. The number of these files may be tens,
> hundreds or thousands.
> Batch Processing is very powerful and allows this kind of work. A very
> simple Model repeated many times.
> I used it in macOS and Linux Ubuntu and managed to create even 2200 files
> in a few minutes: the model worked 2200 times.
>
> The problem, however, came up in the Windows version. Basically Batch
> Processing at some point stops completely randomly, for example after 38
> processes or after 54 and so on. The model does not exit but stays put and
> does not start again.
>
> I have tried and tried again in different computers but the result is the
> same. In Windows, the program stops after running only a few models
> completely randomly.
> I don't understand the source of the problem: is it the memory? Or is it
> in Windows to clear the cache during the various steps?
> The raster area is not large and the final raster file is usually small,
> about 20 MB.
> Batch Processing only works for a few times and then stops.
> Can anyone help me with this?
>
> Thanks
>
> Lorenzo
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-- 
___________________________
Sebastian "Bas* " Gutwein
*rhymes with Josh

Regenerative Design Group
1 Chevalier Ave
Greenfield, Ma 01301
Web: regenerativedesigngroup.com
(631) 241-1018

*Look close, think big, make change. *
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