PyOpenCL March 2016

pyopencl@tiker.net

6 participants
10 discussions

Re: [PyOpenCL] GLTexture NotImplementedError

by Andreas Kloeckner

Should be fixed in eb1182a. Andreas Sean Lynch <seanl(a)literati.org> writes: > There is something very strange going on, because I cannot see any > difference between how create_from_gl_buffer and create_from_gl_texture are > declared, and yet: > > seanl@michiru ~/project/voxel (git)-[master] % python noisetest.py > > > Traceback (most recent call last): > File "noisetest.py", line 8, in <module> > import pyopencl as cl > File > "/home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/__init__.py", > line 35, in <module> > import pyopencl.cffi_cl as _cl > File > "/home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/cffi_cl.py", > line 36, in <module> > from pyopencl._cffi import ffi as _ffi > ImportError: > /home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/_ > cffi.cpython-35m-x86_64-linux-gnu.so: undefined symbol: > create_from_gl_texture > > From nm on the module: > > 0000000000044f30 T create_from_gl_buffer > 00000000000453f0 T create_from_gl_renderbuffer > U create_from_gl_texture > 0000000000041970 T create_image_2d > 00000000000423a0 T create_image_3d > > There is, however, a mangled version of create_from_gl_texture, and NOT for > create_from_gl_buffer: > > 0000000000044a00 T _Z22create_from_gl_texturePP6clbaseS0_mjij > > > > On Mon, Mar 28, 2016 at 10:16 AM, Sean Lynch <seanl(a)literati.org> wrote: > >> Fantastic. I'll try it out after I put the kids to bed tonight (California >> time). And I'm happy to contribute tests. >> >> On Mon, Mar 28, 2016 at 10:10 AM, Andreas Kloeckner < >> lists(a)informa.tiker.net> wrote: >> >>> Sean Lynch <seanl(a)literati.org> writes: >>> >>> > Beignet doesn't support clCreateFromGLBuffer, but it does support >>> > clCreateFromGLTexture. PyOpenCL supports clCreateFromGLBuffer, but I get >>> > NotImplementedError for GLTexture. Does anyone know what needs to be >>> done >>> > to make GLTexture work? >>> >>> I've made a preliminary implementation: >>> >>> https://github.com/pyopencl/pyopencl/commit/de58fbc6dac05428883e64e04dbf802… >>> >>> Could you please submit some code that can be used to test it? (ideally >>> as a patch/PR to the test suite) >>> >>> Thanks! >>> Andreas >>> >> >>

4 years, 6 months

Re: [PyOpenCL] GLTexture NotImplementedError

by Sean Lynch

Incidentally, I also get that error using "python setup.py test" in the pyopencl source directory. On Mon, Mar 28, 2016 at 6:31 PM, Sean Lynch <seanl(a)literati.org> wrote: > There is something very strange going on, because I cannot see any > difference between how create_from_gl_buffer and create_from_gl_texture are > declared, and yet: > > seanl@michiru ~/project/voxel (git)-[master] % python noisetest.py > > > Traceback (most recent call last): > File "noisetest.py", line 8, in <module> > import pyopencl as cl > File > "/home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/__init__.py", > line 35, in <module> > import pyopencl.cffi_cl as _cl > File > "/home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/cffi_cl.py", > line 36, in <module> > from pyopencl._cffi import ffi as _ffi > ImportError: > /home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/_ > cffi.cpython-35m-x86_64-linux-gnu.so: undefined symbol: > create_from_gl_texture > > From nm on the module: > > 0000000000044f30 T create_from_gl_buffer > 00000000000453f0 T create_from_gl_renderbuffer > U create_from_gl_texture > 0000000000041970 T create_image_2d > 00000000000423a0 T create_image_3d > > There is, however, a mangled version of create_from_gl_texture, and NOT > for create_from_gl_buffer: > > 0000000000044a00 T _Z22create_from_gl_texturePP6clbaseS0_mjij > > > > On Mon, Mar 28, 2016 at 10:16 AM, Sean Lynch <seanl(a)literati.org> wrote: > >> Fantastic. I'll try it out after I put the kids to bed tonight >> (California time). And I'm happy to contribute tests. >> >> On Mon, Mar 28, 2016 at 10:10 AM, Andreas Kloeckner < >> lists(a)informa.tiker.net> wrote: >> >>> Sean Lynch <seanl(a)literati.org> writes: >>> >>> > Beignet doesn't support clCreateFromGLBuffer, but it does support >>> > clCreateFromGLTexture. PyOpenCL supports clCreateFromGLBuffer, but I >>> get >>> > NotImplementedError for GLTexture. Does anyone know what needs to be >>> done >>> > to make GLTexture work? >>> >>> I've made a preliminary implementation: >>> >>> https://github.com/pyopencl/pyopencl/commit/de58fbc6dac05428883e64e04dbf802… >>> >>> Could you please submit some code that can be used to test it? (ideally >>> as a patch/PR to the test suite) >>> >>> Thanks! >>> Andreas >>> >> >> >

4 years, 6 months

Re: [PyOpenCL] GLTexture NotImplementedError

by Sean Lynch

There is something very strange going on, because I cannot see any difference between how create_from_gl_buffer and create_from_gl_texture are declared, and yet: seanl@michiru ~/project/voxel (git)-[master] % python noisetest.py Traceback (most recent call last): File "noisetest.py", line 8, in <module> import pyopencl as cl File "/home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/__init__.py", line 35, in <module> import pyopencl.cffi_cl as _cl File "/home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/cffi_cl.py", line 36, in <module> from pyopencl._cffi import ffi as _ffi ImportError: /home/seanl/project/voxel/pyenv/lib/python3.5/site-packages/pyopencl-2015.2.4-py3.5-linux-x86_64.egg/pyopencl/_ cffi.cpython-35m-x86_64-linux-gnu.so: undefined symbol: create_from_gl_texture >From nm on the module: 0000000000044f30 T create_from_gl_buffer 00000000000453f0 T create_from_gl_renderbuffer U create_from_gl_texture 0000000000041970 T create_image_2d 00000000000423a0 T create_image_3d There is, however, a mangled version of create_from_gl_texture, and NOT for create_from_gl_buffer: 0000000000044a00 T _Z22create_from_gl_texturePP6clbaseS0_mjij On Mon, Mar 28, 2016 at 10:16 AM, Sean Lynch <seanl(a)literati.org> wrote: > Fantastic. I'll try it out after I put the kids to bed tonight (California > time). And I'm happy to contribute tests. > > On Mon, Mar 28, 2016 at 10:10 AM, Andreas Kloeckner < > lists(a)informa.tiker.net> wrote: > >> Sean Lynch <seanl(a)literati.org> writes: >> >> > Beignet doesn't support clCreateFromGLBuffer, but it does support >> > clCreateFromGLTexture. PyOpenCL supports clCreateFromGLBuffer, but I get >> > NotImplementedError for GLTexture. Does anyone know what needs to be >> done >> > to make GLTexture work? >> >> I've made a preliminary implementation: >> >> https://github.com/pyopencl/pyopencl/commit/de58fbc6dac05428883e64e04dbf802… >> >> Could you please submit some code that can be used to test it? (ideally >> as a patch/PR to the test suite) >> >> Thanks! >> Andreas >> > >

4 years, 6 months

Re: [PyOpenCL] GLTexture NotImplementedError

by Andreas Kloeckner

Sean Lynch <seanl(a)literati.org> writes: > Beignet doesn't support clCreateFromGLBuffer, but it does support > clCreateFromGLTexture. PyOpenCL supports clCreateFromGLBuffer, but I get > NotImplementedError for GLTexture. Does anyone know what needs to be done > to make GLTexture work? I've made a preliminary implementation: https://github.com/pyopencl/pyopencl/commit/de58fbc6dac05428883e64e04dbf802… Could you please submit some code that can be used to test it? (ideally as a patch/PR to the test suite) Thanks! Andreas

4 years, 6 months

GLTexture NotImplementedError

by Sean Lynch

Beignet doesn't support clCreateFromGLBuffer, but it does support clCreateFromGLTexture. PyOpenCL supports clCreateFromGLBuffer, but I get NotImplementedError for GLTexture. Does anyone know what needs to be done to make GLTexture work?

4 years, 6 months

Test post (please ignore)

by Andreas Kloeckner

Hi there, there have been reports that the mailing list is down: https://github.com/pyopencl/pyopencl/issues/118 This post is me trying to reproduce the issue. Andreas

4 years, 6 months

benchmark.py OS X cannot do 256 workers on CPU

by Vizkelethy, Gyorgy

I am very new to OpenCl, I am actually investigating if this is what I need. So if I ask something obvious please just point me where the information can be found. I installed pyopencl after some troubles. My OS is 10.10 (Yosemite) but I have XCode 7, which has the 10.11 SDK. So the install script did not find the SDK for the OS and crashed. The solution was easy, just to make a link to the 10.11 SDK with the right name. Then the first thing I did was to run the benchmark script. With the default settings, 256 workers, it failed with LogicError: clenqueuendrangekernel failed: INVALID_WORK_GROUP_SIZE in the CPU section. If I skipped the CPU it ran just fine on my Radeon GPUs. I changed the number of workers to 128 and it ran just fine on the CPU. When I query the CPU OpenCL properties it says the maximum work group size is 1024, but it fails with 256. Is that normal? If yes why? I tried it on four different Macs, 24 core MacPro, 8 core iMac 5k, and two different 8 core MacBook Pros, with same result. One more thing. There are couple of problems with some of the examples. narray fails on the CPU with clbuildprogram failed: BUILD_PROGRAM_FAILURE - transpose fails on the CPU with clenqueuendrangekernel failed: INVALID_WORK_GROUP_SIZE after benchmarking Silly 7488 5.25572997632 GB/s gl_interop fails with AttributeError: type object 'context_properties' has no attribute ‘CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE in tools.py gl_particle_animation.py fails with AttributeError: type object 'context_properties' has no attribute ‘CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE’ then many more error messages are coming, and since the particle window cannot be closed I have to kill python. Did things change between now when the examples were written? Thanks for any help. George Gyorgy Vizkelethy Sandia National Laboratories Radiation-Solid Interactions PO Box 5800, MS 1056 Albuquerque, NM 87185 USA +1 (505) 284-3120 gvizkel(a)sandia.gov<mailto:gvizkel@sandia.gov>

4 years, 6 months

ARRAY'16: Workshop on Libraries, Languages and Compilers for Array Programming

by Andreas Kloeckner

Hi all, I imagine that one of the main things that PyOpenCL and PyCUDA get used for are computations with large arrays. As such, I can imagine that many of you are sympathetic to the cause of trying to come up with simpler abstractions that nonetheless yield high-performance code for such computations. ARRAY'16 is a workshop that concerns itself with programming language aspects of computing with arrays, including language design, compilation, libraries, and performance optimization. More information on the workshop (including the full call for papers) may be found here: http://conf.researchr.org/track/pldi-2016/ARRAY-2016 The workshop will be held June 14 in Santa Barbara, and the deadline for submissions is April 1. I would be delighted to see some submissions from the PyCUDA/PyOpenCL crowd! (Disclaimer: I am on the organizing committee.) Andreas

4 years, 6 months

device not found, ambiguous icd file contents maybe?

by Michelle

Hello again, I have a muddy situation on my Ubuntu 14.04. I have the AMDAPP sdk installed. I also have various nvidia drivers (352 is in use) installed and I have cuda installed. I'm trying to get pyopencl to use the nvidia gpu. Running example opencl files from inside cuda works--ie, it finds the nvidia device and can create a context. I can't get pyopencl to find the device. My siteconf.py has the directories where the cuda includes and libOpenCL.so reside. I looked at etc/vendors/nvidia.icd and it has libOpenCL.so but there are at least two places where it could find libOpenCL.so, inside the AMD sdk and the cuda, and I'm not sure how to tell it to go to the cuda one. Should I create a symbolic link and point it to the cuda one, and put the name of the symbolic link in the .icd? I also have a bunch of libOpenCL.so.1, .1.0, .1.0.0 in various places, so I'd have to give it a unique name. I tried putting the full path to the right .so but still get PLATFORM_NOT_FOUND_KHR.

4 years, 6 months

Pip no CL/cl.h dispute of using build_ext for 2014.1

by Jesse Hinrichsen

Hi, for a couple of days I am trying to install pyopencl (2014.1) on an Ubuntu machine (3.13.0.77, x86_64) as user (no root privileges). When running $ pip install —global-option=build_ext —global-option=„-I/opt/sw/cuda/include -L/opt/sw/cuda/lib64“ pyopencl==2014.1 the compiler throws x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -fwrapv -Wall -O3 -DNDEBUG -fPIC -DBOOST_PYTHON_SOURCE=1 -DPYGPU_PACKAGE=pyopencl -DPYOPENCL_USE_DEVICE_FISSION=1 -DBOOST_THREAD_DONT_USE_CHRONO=1 -DPYGPU_PYOPENCL=1 -DBOOST_MULTI_INDEX_DISABLE_SERIALIZATION=1 -DBOOST_THREAD_BUILD_DLL=1 -Dboost=pyopenclboost -DBOOST_ALL_NO_LIB=1 -Ibpl-subset/bpl_subset -I/opt/sw/cuda/include -L/opt/sw/cuda/lib64 -I/usr/include/python2.7 -c src/wrapper/wrap_cl.cpp -o build/temp.linux-x86_64-2.7/src/wrapper/wrap_cl.o In file included from src/wrapper/wrap_cl.cpp:1:0: src/wrapper/wrap_cl.hpp:28:19: fatal error: CL/cl.h: No such file or directory #include <CL/cl.h> The Cuda version is Cuda compilation tools, release 7.0, V7.0.27 When compiling the package via setuptools it actually succeeds but i am unable to import pyopencl and instead getting the error: >>>> import pyopencl pyopencl/__init__.py:34: UserWarning: It looks like you are importing PyOpenCL from its source directory. This likely won't work. warn("It looks like you are importing PyOpenCL from " Traceback (most recent call last): File "<stdin>", line 1, in <module> File "pyopencl/__init__.py", line 28, in <module> import pyopencl._cl as _cl ImportError: No module named _cl My siteconf.py looked like BOOST_INC_DIR = [] BOOST_LIB_DIR = [] BOOST_COMPILER = 'gcc43' BOOST_PYTHON_LIBNAME = ['boost_python-py27'] USE_SHIPPED_BOOST = True CL_TRACE = False CL_ENABLE_GL = False CL_ENABLE_DEVICE_FISSION = False CL_INC_DIR = ['/opt/sw/cuda/include'] CL_LIB_DIR = ['/opt/sw/cuda/lib64'] CL_LIBNAME = ['OpenCL'] CXXFLAGS = [] LDFLAGS = [] What can I do? Any ideas what I can try? Best Regards Jesse

4 years, 6 months

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PyOpenCL March 2016