[Qgis-user] Qgis / Orfeo Toolbox (windows) : Memory error

[Micha Silver]

Hello:
I noticed this forum post from a few years ago.
https://forum.orfeo-toolbox.org/t/otb-genericregionmerging/585
I guess, from your experience, that the issue still persists :-(

--
Micha Silvercell: +972-523-665918

On Thursday, 27 February 2025 at 14:33, celati Laurent via QGIS-User <qgis-user at lists.osgeo.org> wrote:

> Hello,
> I'm taking the liberty to post a message. I work with windows 11, Qgis 3.34.13. I work with OrfeoToolbox 9 via Qgis interface (GenericRegionMerging segmentation module). Please find below the characteristics of my Windows station:
>
>> Name of the operating system Microsoft Windows 11 Professional
>> Type PC based on x64
>> Processor 13th Gen Intel(R) Core(TM) i7-13700H, 2400 MHz, 14 core(s), 20 logical processor(s)
>> Installed physical memory (RAM) 32.0 GB
>> Total physical memory 31.7 GB
>> Available physical memory 17.8 GB
>> Total virtual memory 39.4 GB
>> Available virtual memory 23.0 GB
>> Space for the swap file 7.75 GB
>
> I manage to generate segmentations without error messages on small areas. But as soon as my input image is larger, I am faced with problems probably memory limitations. I share the error messages.
> Could you share some recommendations? Should I change the memory allocation currently allocated to Orfeotoolbox? To Qgis? Or change the strategy in terms of processor solicitation?
>
>> 2025-02-24 10:39:57 (INFO) GenericRegionMerging: Default RAM limit for OTB is 256 MB
>> 2025-02-24 10:39:57 (INFO) GenericRegionMerging: GDAL maximum cache size is 1621 MB
>> 2025-02-24 10:39:57 (INFO) GenericRegionMerging: OTB will use at most 20 threads
>> 2025-02-24 10:39:57 (INFO): Loading metadata from official product
>> 2025-02-24 10:45:37 (FATAL) GenericRegionMerging: Caught std::exception during application execution: bad allocation
>> Execution completed in 361.86 secondes (6 minutes 2 secondes)
>> Résultats:
>> XXXXXXXXXXXXX/Process/AE_GRM_100_0.9_0.5.tif'}
>
> Many thanks.
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