[gdal-dev] Potential geopackage rtree problem on MacOS ARM64

[Even Rouault]

ok, I believe I've now a fix in https://github.com/OSGeo/gdal/pull/9700 
. Probably a subtle multi-threading issue related to different memory 
ordering between M1 and Intel CPUs (or just that it was easier to 
trigger on M1)

Le 16/04/2024 à 21:01, Even Rouault via gdal-dev a écrit :
>
> Hi,
>
> I've investigated that today, and I can quite reliably trigger a 
> similar error with our existing tests on CI, but this is impossible to 
> diagnose further without direct access to a machine where the error 
> triggers (when simulating taking the the error code path on Linux, the 
> fallback code works, whereas it doesn't on OSX Arm64, so there's 
> something quite subtle happening here). So if someone has a OSX Arm64 
> and is willing to give me ssh access to it, that would be welcome.
>
> In the meantime, I've submitted 
> https://github.com/OSGeo/gdal/pull/9685 which is just a workaround to 
> disable (by default) the threaded RTree creation on that platform. It 
> can be explicitly enabled by setting OGR_GPKG_ALLOW_THREADED_RTREE to YES
>
> Even
>
> Le 16/04/2024 à 08:13, Rahkonen Jukka via gdal-dev a écrit :
>>
>> Hi,
>>
>> It seems that at least two MacOS ARM64 users have faced a problem 
>> with the new, faster rtree creation method so maybe it is worth 
>> having a look. Obviously a big dataset and right hardware is needed 
>> for testing 
>> https://gis.stackexchange.com/questions/479958/how-to-fix-failed-to-prepare-sql-error-when-creating-gpkg-file-from-osm-extrac/479964#479964
>>
>> -Jukka Rahkonen-
>>
>>
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