Ambiguous call to the convert_uint_sat function

[Robin1em]

When I try applying the Gauss-Otsu-labeling in the following code, I get an error message that the call to the function 'convert_uint_sat' is ambiguous.

from skimage.io import imread
import pyclesperanto_prototype as cle

# load image
input_image = imread("...path/IXMtest_A02_s9.tif")[:,:,0]

# apply Gauss-Otsu-labeling
segmented = cle.gauss_otsu_labeling(input_image, outline_sigma=1)

I use a MacBook Pro with a HD Graphics 4000, OpenCL C version 1.2 and PyOpenCL version 2023.1.4

[haesleinhuepf]

get an error message that the call to the function 'convert_uint_sat' is ambiguous.

Can you copy&paste the error message here so that we can read it? Thanks!

[Robin1em]

Thank you for the quick response!
Here's the error message:

File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/1-Image_Segmentation/1.6-Gauss-Otsu-labeling.py", line 9, in
segmented = cle.gauss_otsu_labeling(input_image, outline_sigma=1)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier0/_plugin_function.py", line 71, in worker_function
return function(*bound.args, **bound.kwargs)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier9/_gauss_otsu_labeling.py", line 45, in gauss_otsu_labeling
segmentation = threshold_otsu(temp)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier0/_plugin_function.py", line 71, in worker_function
return function(*bound.args, **bound.kwargs)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier9/_threshold_otsu.py", line 46, in threshold_otsu
hist = pull(histogram(source, num_bins=256, minimum_intensity=minimum_intensity, maximum_intensity=maximum_intensity, determine_min_max=False))
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier0/_plugin_function.py", line 71, in worker_function
return function(*bound.args, **bound.kwargs)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier3/_histogram.py", line 117, in histogram
execute(file,
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier0/_execute.py", line 35, in execute
return Backend.get_instance().get().execute(anchor, opencl_kernel_filename, kernel_name, global_size, parameters, prog, constants, image_size_independent_kernel_compilation, device)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier0/_opencl_backend.py", line 41, in execute
return execute(anchor, opencl_kernel_filename, kernel_name, global_size, parameters, prog, constants, image_size_independent_kernel_compilation, device)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier0/_opencl_execute.py", line 311, in execute
prog = device.program_from_source("\n".join(defines))
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier0/_device.py", line 28, in program_from_source
return OCLProgram(src_str=source, dev=self)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyclesperanto_prototype/_tier0/_program.py", line 28, in init
self.build(options=build_options)
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyopencl/init.py", line 535, in build
self._prg, was_cached = self._build_and_catch_errors(
File "/Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyopencl/init.py", line 583, in _build_and_catch_errors
raise err
pyopencl._cl.RuntimeError: clBuildProgram failed: BUILD_PROGRAM_FAILURE - clBuildProgram failed: BUILD_PROGRAM_FAILURE - clBuildProgram failed: BUILD_PROGRAM_FAILURE

Build on <pyopencl.Device 'HD Graphics 4000' on 'Apple' at 0x1024400>:

:28:26: warning: unknown OpenCL extension 'cl_amd_printf' - ignoring
#pragma OPENCL EXTENSION cl_amd_printf : enable
^
:596:16: warning: implicit conversion from 'long long' to 'uint' (aka 'unsigned int') changes value from 18446744073709551615 to 4294967295
return 18446744073709551615;
~~~~~~ ^~~~~~~~~~~~~~~~~~~~
:606:16: warning: implicit conversion from 'long' to 'int' changes value from 9223372036854775807 to -1
return 9223372036854775807;
~~~~~~ ^~~~~~~~~~~~~~~~~~~
:609:16: warning: implicit conversion from 'long long' to 'int' changes value from -9223372036854775808 to 0
return -9223372036854775808 ;
~~~~~~ ^~~~~~~~~~~~~~~~~~~~
:668:22: error: call to 'convert_uint_sat' is ambiguous
indx_x = convert_uint_sat(( (clr - minimum) * (float)(GET_IMAGE_WIDTH(dst_histogram) - 1)) / range + 0.5);
^~~~~~~~~~~~~~~~
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4104:65: note: expanded from macro '__CLFN_CONVERT_EXT'
#define __CLFN_CONVERT_EXT(name, ext, rtype) rtype OVERLOAD name##ext( uchar a);
^
:75:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4105:20: note: expanded from macro '__CLFN_CONVERT_EXT'
rtype OVERLOAD name##ext( ushort a);
^
:76:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4106:20: note: expanded from macro '__CLFN_CONVERT_EXT'
rtype OVERLOAD name##ext( uint a);
^
:77:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4107:20: note: expanded from macro '__CLFN_CONVERT_EXT'
rtype OVERLOAD name##ext( ulong a);
^
:78:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4108:20: note: expanded from macro '__CLFN_CONVERT_EXT'
rtype OVERLOAD name##ext( char a);
^
:79:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4109:20: note: expanded from macro '__CLFN_CONVERT_EXT'
rtype OVERLOAD name##ext( short a);
^
:80:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4110:20: note: expanded from macro '__CLFN_CONVERT_EXT'
rtype OVERLOAD name##ext( int a);
^
:81:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4111:20: note: expanded from macro '__CLFN_CONVERT_EXT'
rtype OVERLOAD name##ext( long a);
^
:82:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4188:20: note: candidate function
__CLFN_CONVERT_EXT(convert_uint, _sat, uint);
^
/System/Library/Frameworks/OpenCL.framework/Versions/A/lib/clang/3.2/include/cl_kernel.h:4112:20: note: expanded from macro '__CLFN_CONVERT_EXT'
rtype OVERLOAD name##ext( float a);
^
:83:1: note: expanded from macro 'convert_uint'
convert_uint_sat
^

(options: -I /Users/Robin/PycharmProjects/imageanalysis_tutorial/venv/lib/python3.10/site-packages/pyopencl/cl)
(source saved as /var/folders/21/n6xrfwks7lz66vy13mzsvcjr0000gn/T/tmpo0mfl46t.cl)

[haesleinhuepf]

I'll take closer look soon.

As a potential workaround: Can you please try calling cle.select_device("CPU") at the beginning? I've seen incompatible GPUs in older Macs and this helped then... Let me know if it works for you too.

[Robin1em]

That worked, thank you very much!