Bug#946422: silx: autopkgtest regression: pocl error

[PICCA Frederic-Emmanuel]

With the silx.io import I have this

(sid_amd64-dchroot)picca at barriere:~$ PYTHONPATH=silx-0.11.0+dfsg/.pybuild/cpython3_3.7_silx/build python3 test.py 
pocl error: lt_dlopen("(null)") or lt_dlsym() failed with 'can't close resident module'.
note: missing symbols in the kernel binary might be reported as 'file not found' errors.

without, I have this

(sid_amd64-dchroot)picca at barriere:~$ PYTHONPATH=silx-0.11.0+dfsg/.pybuild/cpython3_3.7_silx/build python3 test.py -v
.Maximum valid workgroup size 2048 on device <pyopencl.Device 'pthread-Intel(R) Xeon(R) CPU E5-2640 v2 @ 2.00GHz' on 'Portable Computing Language' at 0x2d9cc20>
FThe gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
.The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
.The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
../home/picca/silx-0.11.0+dfsg/.pybuild/cpython3_3.7_silx/build/silx/opencl/test/test_linalg.py:69: FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated; use `arr[tuple(seq)]` instead of `arr[seq]`. In the future this will be interpreted as an array index, `arr[np.array(seq)]`, which will result either in an error or a different result.
  gradient[slice_all] = np.diff(img, axis=d)
....4096
.......7 warnings generated.
/usr/lib/python3/dist-packages/pyopencl/__init__.py:235: CompilerWarning: Non-empty compiler output encountered. Set the environment variable PYOPENCL_COMPILER_OUTPUT=1 to see more.
  "to see more.", CompilerWarning)
..7 warnings generated.
....................................................................................................................................................ssssssssssssssssssssssssssssssssssssssssssssssss..
======================================================================
FAIL: test_medfilt (silx.opencl.test.test_medfilt.TestMedianFilter)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/picca/silx-0.11.0+dfsg/.pybuild/cpython3_3.7_silx/build/silx/opencl/test/test_medfilt.py", line 115, in test_medfilt
    self.assertEqual(r.error, 0, 'Results are correct')
AssertionError: 3.4028235e+38 != 0 : Results are correct

----------------------------------------------------------------------
Ran 217 tests in 175.525s

FAILED (failures=1, skipped=48)


I will run it with the PYOPENCL_COMPILEr_OUTPUT=1 to check that compiler warning


(sid_amd64-dchroot)picca at barriere:~$ PYOPENCL_COMPILER_OUTPUT=1 PYTHONPATH=silx-0.11.0+dfsg/.pybuild/cpython3_3.7_silx/build python3 test.py -v
.Maximum valid workgroup size 2048 on device <pyopencl.Device 'pthread-Intel(R) Xeon(R) CPU E5-2640 v2 @ 2.00GHz' on 'Portable Computing Language' at 0x2d6e6d0>
FThe gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
.The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
.The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
The gpyfft module was not found. The Fourier transforms will be done on CPU. For more performances, it is advised to install gpyfft.
../home/picca/silx-0.11.0+dfsg/.pybuild/cpython3_3.7_silx/build/silx/opencl/test/test_linalg.py:69: FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated; use `arr[tuple(seq)]` instead of `arr[seq]`. In the future this will be interpreted as an array index, `arr[np.array(seq)]`, which will result either in an error or a different result.
  gradient[slice_all] = np.diff(img, axis=d)
....4096
......./usr/lib/python3/dist-packages/pyopencl/__init__.py:231: CompilerWarning: Built kernel retrieved from cache. Original from-source build had warnings:
Build on <pyopencl.Device 'pthread-Intel(R) Xeon(R) CPU E5-2640 v2 @ 2.00GHz' on 'Portable Computing Language' at 0x2d6e6d0> succeeded, but said:

warning: /home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:357:33: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:359:31: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:364:13 <Spelling=/home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:364:41>: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:364:13 <Spelling=/home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:364:41>: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:468:34: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:471:15 <Spelling=/home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:471:43>: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:471:15 <Spelling=/home/picca/.cache/pocl/kcache/tempfile-f7-98-f8-b4-76.cl:471:43>: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers

  warn(text, CompilerWarning)
../usr/lib/python3/dist-packages/pyopencl/__init__.py:231: CompilerWarning: Built kernel retrieved from cache. Original from-source build had warnings:
Build on <pyopencl.Device 'pthread-Intel(R) Xeon(R) CPU E5-2640 v2 @ 2.00GHz' on 'Portable Computing Language' at 0x2d6e6d0> succeeded, but said:

warning: /home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:357:33: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:359:31: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:364:13 <Spelling=/home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:364:41>: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:364:13 <Spelling=/home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:364:41>: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:468:34: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:471:15 <Spelling=/home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:471:43>: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers
warning: /home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:471:15 <Spelling=/home/picca/.cache/pocl/kcache/tempfile-d7-82-70-03-d8.cl:471:43>: passing 'const __global float *' to parameter of type '__global float *' discards qualifiers

  warn(text, CompilerWarning)
....................................................................................................................................................ssssssssssssssssssssssssssssssssssssssssssssssss..
======================================================================
FAIL: test_medfilt (silx.opencl.test.test_medfilt.TestMedianFilter)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/picca/silx-0.11.0+dfsg/.pybuild/cpython3_3.7_silx/build/silx/opencl/test/test_medfilt.py", line 115, in test_medfilt
    self.assertEqual(r.error, 0, 'Results are correct')
AssertionError: 3.4028235e+38 != 0 : Results are correct

----------------------------------------------------------------------
Ran 217 tests in 69.672s


So these warning seems innocent...