In order to reproduce the bug,
install python3-silx 2.0.0+dfsg-1
python3-pytest-xvfb pocl-opencl-icd
then
$ pytest --pyargs silx.image.test.test_medianfilter -v
===============================================================================================
test session starts
===============================================================================================
platform linux -- Python 3.11.8, pytest-8.0.2, pluggy-1.4.0 -- /usr/bin/python3
cachedir: .pytest_cache
rootdir: /home/picca/debian/science-team/pyvkfft
plugins: anyio-4.2.0, dials-data-2.4.0, xvfb-3.0.0
collected 2 items
::TestMedianFilterEngines::testCppMedFilt2d PASSED
[ 50%]
::TestMedianFilterEngines::testOpenCLMedFilt2d Abandon
the OpenCL test fails
